diff options
Diffstat (limited to 'arch/arm/mach-tegra')
51 files changed, 9681 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/Kconfig b/arch/arm/mach-tegra/Kconfig new file mode 100644 index 00000000000..acd9552f8ad --- /dev/null +++ b/arch/arm/mach-tegra/Kconfig @@ -0,0 +1,61 @@ +if ARCH_TEGRA + +comment "NVIDIA Tegra options" + +choice + prompt "Select Tegra processor family for target system" + +config ARCH_TEGRA_2x_SOC + bool "Tegra 2 family" + select CPU_V7 + select ARM_GIC + select ARCH_REQUIRE_GPIOLIB + help + Support for NVIDIA Tegra AP20 and T20 processors, based on the + ARM CortexA9MP CPU and the ARM PL310 L2 cache controller + +endchoice + +config TEGRA_PCI + bool "PCI Express support" + select PCI + +comment "Tegra board type" + +config MACH_HARMONY + bool "Harmony board" + help + Support for nVidia Harmony development platform + +choice + prompt "Low-level debug console UART" + default TEGRA_DEBUG_UART_NONE + +config TEGRA_DEBUG_UART_NONE + bool "None" + +config TEGRA_DEBUG_UARTA + bool "UART-A" + +config TEGRA_DEBUG_UARTB + bool "UART-B" + +config TEGRA_DEBUG_UARTC + bool "UART-C" + +config TEGRA_DEBUG_UARTD + bool "UART-D" + +config TEGRA_DEBUG_UARTE + bool "UART-E" + +endchoice + +config TEGRA_SYSTEM_DMA + bool "Enable system DMA driver for NVIDIA Tegra SoCs" + default y + help + Adds system DMA functionality for NVIDIA Tegra SoCs, used by + several Tegra device drivers + +endif diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile new file mode 100644 index 00000000000..cdbc68e4c0c --- /dev/null +++ b/arch/arm/mach-tegra/Makefile @@ -0,0 +1,21 @@ +obj-y += common.o +obj-y += io.o +obj-y += irq.o legacy_irq.o +obj-y += clock.o +obj-y += timer.o +obj-y += gpio.o +obj-y += pinmux.o +obj-y += fuse.o +obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += clock.o +obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += tegra2_clocks.o +obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += tegra2_dvfs.o +obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += pinmux-t2-tables.o +obj-$(CONFIG_SMP) += platsmp.o localtimer.o headsmp.o +obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o +obj-$(CONFIG_TEGRA_SYSTEM_DMA) += dma.o +obj-$(CONFIG_CPU_FREQ) += cpu-tegra.o +obj-$(CONFIG_TEGRA_PCI) += pcie.o + +obj-${CONFIG_MACH_HARMONY} += board-harmony.o +obj-${CONFIG_MACH_HARMONY} += board-harmony-pinmux.o +obj-${CONFIG_MACH_HARMONY} += board-harmony-pcie.o diff --git a/arch/arm/mach-tegra/Makefile.boot b/arch/arm/mach-tegra/Makefile.boot new file mode 100644 index 00000000000..db52d61a738 --- /dev/null +++ b/arch/arm/mach-tegra/Makefile.boot @@ -0,0 +1,3 @@ +zreladdr-$(CONFIG_ARCH_TEGRA_2x_SOC) := 0x00008000 +params_phys-$(CONFIG_ARCH_TEGRA_2x_SOC) := 0x00000100 +initrd_phys-$(CONFIG_ARCH_TEGRA_2x_SOC) := 0x00800000 diff --git a/arch/arm/mach-tegra/board-harmony-pcie.c b/arch/arm/mach-tegra/board-harmony-pcie.c new file mode 100644 index 00000000000..f7e7d4514b6 --- /dev/null +++ b/arch/arm/mach-tegra/board-harmony-pcie.c @@ -0,0 +1,57 @@ +/* + * arch/arm/mach-tegra/board-harmony-pcie.c + * + * Copyright (C) 2010 CompuLab, Ltd. + * Mike Rapoport <mike@compulab.co.il> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/kernel.h> +#include <linux/gpio.h> +#include <linux/err.h> +#include <linux/regulator/consumer.h> + +#include <asm/mach-types.h> + +#include <mach/pinmux.h> +#include "board.h" + +#ifdef CONFIG_TEGRA_PCI + +static int __init harmony_pcie_init(void) +{ + int err; + + if (!machine_is_harmony()) + return 0; + + tegra_pinmux_set_tristate(TEGRA_PINGROUP_GPV, TEGRA_TRI_NORMAL); + tegra_pinmux_set_tristate(TEGRA_PINGROUP_SLXA, TEGRA_TRI_NORMAL); + tegra_pinmux_set_tristate(TEGRA_PINGROUP_SLXK, TEGRA_TRI_NORMAL); + + err = tegra_pcie_init(true, true); + if (err) + goto err_pcie; + + return 0; + +err_pcie: + tegra_pinmux_set_tristate(TEGRA_PINGROUP_GPV, TEGRA_TRI_TRISTATE); + tegra_pinmux_set_tristate(TEGRA_PINGROUP_SLXA, TEGRA_TRI_TRISTATE); + tegra_pinmux_set_tristate(TEGRA_PINGROUP_SLXK, TEGRA_TRI_TRISTATE); + + return err; +} + +subsys_initcall(harmony_pcie_init); + +#endif diff --git a/arch/arm/mach-tegra/board-harmony-pinmux.c b/arch/arm/mach-tegra/board-harmony-pinmux.c new file mode 100644 index 00000000000..50b15d500ca --- /dev/null +++ b/arch/arm/mach-tegra/board-harmony-pinmux.c @@ -0,0 +1,144 @@ +/* + * arch/arm/mach-tegra/board-harmony-pinmux.c + * + * Copyright (C) 2010 Google, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/kernel.h> +#include <mach/pinmux.h> + +#include "board-harmony.h" + +static struct tegra_pingroup_config harmony_pinmux[] = { + {TEGRA_PINGROUP_ATA, TEGRA_MUX_IDE, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_ATB, TEGRA_MUX_SDIO4, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_ATC, TEGRA_MUX_NAND, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_ATD, TEGRA_MUX_GMI, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_ATE, TEGRA_MUX_GMI, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_CDEV1, TEGRA_MUX_OSC, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_CDEV2, TEGRA_MUX_PLLP_OUT4, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_CRTP, TEGRA_MUX_CRT, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_CSUS, TEGRA_MUX_VI_SENSOR_CLK, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_DAP1, TEGRA_MUX_DAP1, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_DAP2, TEGRA_MUX_DAP2, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_DAP3, TEGRA_MUX_DAP3, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_DAP4, TEGRA_MUX_DAP4, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_DDC, TEGRA_MUX_I2C2, TEGRA_PUPD_PULL_UP, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_DTA, TEGRA_MUX_SDIO2, TEGRA_PUPD_PULL_UP, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_DTB, TEGRA_MUX_RSVD1, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_DTC, TEGRA_MUX_RSVD1, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_DTD, TEGRA_MUX_SDIO2, TEGRA_PUPD_PULL_UP, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_DTE, TEGRA_MUX_RSVD1, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_DTF, TEGRA_MUX_I2C3, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_GMA, TEGRA_MUX_SDIO4, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_GMB, TEGRA_MUX_GMI, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_GMC, TEGRA_MUX_UARTD, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_GMD, TEGRA_MUX_GMI, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_GME, TEGRA_MUX_SDIO4, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_GPU, TEGRA_MUX_GMI, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_GPU7, TEGRA_MUX_RTCK, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_GPV, TEGRA_MUX_PCIE, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_HDINT, TEGRA_MUX_HDMI, TEGRA_PUPD_PULL_UP, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_I2CP, TEGRA_MUX_I2C, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_IRRX, TEGRA_MUX_UARTA, TEGRA_PUPD_PULL_UP, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_IRTX, TEGRA_MUX_UARTA, TEGRA_PUPD_PULL_UP, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_KBCA, TEGRA_MUX_KBC, TEGRA_PUPD_PULL_UP, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_KBCB, TEGRA_MUX_KBC, TEGRA_PUPD_PULL_UP, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_KBCC, TEGRA_MUX_KBC, TEGRA_PUPD_PULL_UP, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_KBCD, TEGRA_MUX_KBC, TEGRA_PUPD_PULL_UP, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_KBCE, TEGRA_MUX_KBC, TEGRA_PUPD_PULL_UP, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_KBCF, TEGRA_MUX_KBC, TEGRA_PUPD_PULL_UP, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LCSN, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_UP, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_LD0, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LD1, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LD10, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LD11, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LD12, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LD13, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LD14, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LD15, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LD16, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LD17, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LD2, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LD3, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LD4, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LD5, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LD6, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LD7, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LD8, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LD9, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LDC, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_UP, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_LDI, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LHP0, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LHP1, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LHP2, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LHS, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_UP, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LM0, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_UP, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LM1, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_UP, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_LPP, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LPW0, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_UP, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LPW1, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_UP, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_LPW2, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_UP, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LSC0, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_UP, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LSC1, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_UP, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_LSCK, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_UP, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_LSDA, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_UP, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_LSDI, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_UP, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_LSPI, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_UP, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LVP0, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_UP, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_LVP1, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_LVS, TEGRA_MUX_DISPLAYA, TEGRA_PUPD_PULL_UP, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_OWC, TEGRA_MUX_RSVD2, TEGRA_PUPD_PULL_UP, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_PMC, TEGRA_MUX_PWR_ON, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_PTA, TEGRA_MUX_HDMI, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_RM, TEGRA_MUX_I2C, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_SDB, TEGRA_MUX_PWM, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_SDC, TEGRA_MUX_PWM, TEGRA_PUPD_PULL_UP, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_SDD, TEGRA_MUX_PWM, TEGRA_PUPD_PULL_UP, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_SDIO1, TEGRA_MUX_SDIO1, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_SLXA, TEGRA_MUX_PCIE, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_SLXC, TEGRA_MUX_SPDIF, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_SLXD, TEGRA_MUX_SPDIF, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_SLXK, TEGRA_MUX_PCIE, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_SPDI, TEGRA_MUX_RSVD2, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_SPDO, TEGRA_MUX_RSVD2, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_SPIA, TEGRA_MUX_GMI, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_SPIB, TEGRA_MUX_GMI, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_SPIC, TEGRA_MUX_GMI, TEGRA_PUPD_PULL_UP, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_SPID, TEGRA_MUX_SPI1, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_SPIE, TEGRA_MUX_SPI1, TEGRA_PUPD_PULL_UP, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_SPIF, TEGRA_MUX_SPI1, TEGRA_PUPD_PULL_DOWN, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_SPIG, TEGRA_MUX_SPI2_ALT, TEGRA_PUPD_PULL_UP, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_SPIH, TEGRA_MUX_SPI2_ALT, TEGRA_PUPD_PULL_UP, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_UAA, TEGRA_MUX_ULPI, TEGRA_PUPD_PULL_UP, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_UAB, TEGRA_MUX_ULPI, TEGRA_PUPD_PULL_UP, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_UAC, TEGRA_MUX_RSVD2, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_UAD, TEGRA_MUX_IRDA, TEGRA_PUPD_PULL_UP, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_UCA, TEGRA_MUX_UARTC, TEGRA_PUPD_PULL_UP, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_UCB, TEGRA_MUX_UARTC, TEGRA_PUPD_PULL_UP, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_UDA, TEGRA_MUX_ULPI, TEGRA_PUPD_NORMAL, TEGRA_TRI_TRISTATE}, + {TEGRA_PINGROUP_CK32, TEGRA_MUX_NONE, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_DDRC, TEGRA_MUX_NONE, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_PMCA, TEGRA_MUX_NONE, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_PMCB, TEGRA_MUX_NONE, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_PMCC, TEGRA_MUX_NONE, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_PMCD, TEGRA_MUX_NONE, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_PMCE, TEGRA_MUX_NONE, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_XM2C, TEGRA_MUX_NONE, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, + {TEGRA_PINGROUP_XM2D, TEGRA_MUX_NONE, TEGRA_PUPD_NORMAL, TEGRA_TRI_NORMAL}, +}; + +void harmony_pinmux_init(void) +{ + tegra_pinmux_config_table(harmony_pinmux, ARRAY_SIZE(harmony_pinmux)); +} diff --git a/arch/arm/mach-tegra/board-harmony.c b/arch/arm/mach-tegra/board-harmony.c new file mode 100644 index 00000000000..b9dbdb1289d --- /dev/null +++ b/arch/arm/mach-tegra/board-harmony.c @@ -0,0 +1,123 @@ +/* + * arch/arm/mach-tegra/board-harmony.c + * + * Copyright (C) 2010 Google, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/serial_8250.h> +#include <linux/clk.h> +#include <linux/dma-mapping.h> +#include <linux/pda_power.h> +#include <linux/io.h> + +#include <asm/mach-types.h> +#include <asm/mach/arch.h> +#include <asm/mach/time.h> +#include <asm/setup.h> + +#include <mach/iomap.h> +#include <mach/irqs.h> + +#include "board.h" +#include "board-harmony.h" +#include "clock.h" + +/* NVidia bootloader tags */ +#define ATAG_NVIDIA 0x41000801 + +#define ATAG_NVIDIA_RM 0x1 +#define ATAG_NVIDIA_DISPLAY 0x2 +#define ATAG_NVIDIA_FRAMEBUFFER 0x3 +#define ATAG_NVIDIA_CHIPSHMOO 0x4 +#define ATAG_NVIDIA_CHIPSHMOOPHYS 0x5 +#define ATAG_NVIDIA_PRESERVED_MEM_0 0x10000 +#define ATAG_NVIDIA_PRESERVED_MEM_N 2 +#define ATAG_NVIDIA_FORCE_32 0x7fffffff + +struct tag_tegra { + __u32 bootarg_key; + __u32 bootarg_len; + char bootarg[1]; +}; + +static int __init parse_tag_nvidia(const struct tag *tag) +{ + + return 0; +} +__tagtable(ATAG_NVIDIA, parse_tag_nvidia); + +static struct plat_serial8250_port debug_uart_platform_data[] = { + { + .membase = IO_ADDRESS(TEGRA_UARTD_BASE), + .mapbase = TEGRA_UARTD_BASE, + .irq = INT_UARTD, + .flags = UPF_BOOT_AUTOCONF, + .iotype = UPIO_MEM, + .regshift = 2, + .uartclk = 216000000, + }, { + .flags = 0 + } +}; + +static struct platform_device debug_uart = { + .name = "serial8250", + .id = PLAT8250_DEV_PLATFORM, + .dev = { + .platform_data = debug_uart_platform_data, + }, +}; + +static struct platform_device *harmony_devices[] __initdata = { + &debug_uart, +}; + +static void __init tegra_harmony_fixup(struct machine_desc *desc, + struct tag *tags, char **cmdline, struct meminfo *mi) +{ + mi->nr_banks = 2; + mi->bank[0].start = PHYS_OFFSET; + mi->bank[0].size = 448 * SZ_1M; + mi->bank[1].start = SZ_512M; + mi->bank[1].size = SZ_512M; +} + +static __initdata struct tegra_clk_init_table harmony_clk_init_table[] = { + /* name parent rate enabled */ + { "uartd", "pll_p", 216000000, true }, + { NULL, NULL, 0, 0}, +}; + +static void __init tegra_harmony_init(void) +{ + tegra_common_init(); + + tegra_clk_init_from_table(harmony_clk_init_table); + + harmony_pinmux_init(); + + platform_add_devices(harmony_devices, ARRAY_SIZE(harmony_devices)); +} + +MACHINE_START(HARMONY, "harmony") + .boot_params = 0x00000100, + .fixup = tegra_harmony_fixup, + .init_irq = tegra_init_irq, + .init_machine = tegra_harmony_init, + .map_io = tegra_map_common_io, + .timer = &tegra_timer, +MACHINE_END diff --git a/arch/arm/mach-tegra/board-harmony.h b/arch/arm/mach-tegra/board-harmony.h new file mode 100644 index 00000000000..09ca7755dd5 --- /dev/null +++ b/arch/arm/mach-tegra/board-harmony.h @@ -0,0 +1,22 @@ +/* + * arch/arm/mach-tegra/board-harmony.h + * + * Copyright (C) 2010 Google, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef _MACH_TEGRA_BOARD_HARMONY_H +#define _MACH_TEGRA_BOARD_HARMONY_H + +void harmony_pinmux_init(void); + +#endif diff --git a/arch/arm/mach-tegra/board.h b/arch/arm/mach-tegra/board.h new file mode 100644 index 00000000000..0de565ca37c --- /dev/null +++ b/arch/arm/mach-tegra/board.h @@ -0,0 +1,33 @@ +/* + * arch/arm/mach-tegra/board.h + * + * Copyright (C) 2010 Google, Inc. + * + * Author: + * Colin Cross <ccross@google.com> + * Erik Gilling <konkers@google.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __MACH_TEGRA_BOARD_H +#define __MACH_TEGRA_BOARD_H + +#include <linux/types.h> + +void __init tegra_common_init(void); +void __init tegra_map_common_io(void); +void __init tegra_init_irq(void); +void __init tegra_init_clock(void); +int __init tegra_pcie_init(bool init_port0, bool init_port1); + +extern struct sys_timer tegra_timer; +#endif diff --git a/arch/arm/mach-tegra/clock.c b/arch/arm/mach-tegra/clock.c new file mode 100644 index 00000000000..ae19f95585b --- /dev/null +++ b/arch/arm/mach-tegra/clock.c @@ -0,0 +1,709 @@ +/* + * + * Copyright (C) 2010 Google, Inc. + * + * Author: + * Colin Cross <ccross@google.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/kernel.h> +#include <linux/clk.h> +#include <linux/list.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/debugfs.h> +#include <linux/slab.h> +#include <linux/seq_file.h> +#include <linux/regulator/consumer.h> +#include <asm/clkdev.h> + +#include "clock.h" +#include "board.h" +#include "fuse.h" + +static LIST_HEAD(clocks); + +static DEFINE_SPINLOCK(clock_lock); +static DEFINE_MUTEX(dvfs_lock); + +static int clk_is_dvfs(struct clk *c) +{ + return (c->dvfs != NULL); +}; + +static int dvfs_set_rate(struct dvfs *d, unsigned long rate) +{ + struct dvfs_table *t; + + if (d->table == NULL) + return -ENODEV; + + for (t = d->table; t->rate != 0; t++) { + if (rate <= t->rate) { + if (!d->reg) + return 0; + + return regulator_set_voltage(d->reg, + t->millivolts * 1000, + d->max_millivolts * 1000); + } + } + + return -EINVAL; +} + +static void dvfs_init(struct clk *c) +{ + int process_id; + int i; + struct dvfs_table *table; + + process_id = c->dvfs->cpu ? tegra_core_process_id() : + tegra_cpu_process_id(); + + for (i = 0; i < c->dvfs->process_id_table_length; i++) + if (process_id == c->dvfs->process_id_table[i].process_id) + c->dvfs->table = c->dvfs->process_id_table[i].table; + + if (c->dvfs->table == NULL) { + pr_err("Failed to find dvfs table for clock %s process %d\n", + c->name, process_id); + return; + } + + c->dvfs->max_millivolts = 0; + for (table = c->dvfs->table; table->rate != 0; table++) + if (c->dvfs->max_millivolts < table->millivolts) + c->dvfs->max_millivolts = table->millivolts; + + c->dvfs->reg = regulator_get(NULL, c->dvfs->reg_id); + + if (IS_ERR(c->dvfs->reg)) { + pr_err("Failed to get regulator %s for clock %s\n", + c->dvfs->reg_id, c->name); + c->dvfs->reg = NULL; + return; + } + + if (c->refcnt > 0) + dvfs_set_rate(c->dvfs, c->rate); +} + +struct clk *tegra_get_clock_by_name(const char *name) +{ + struct clk *c; + struct clk *ret = NULL; + unsigned long flags; + spin_lock_irqsave(&clock_lock, flags); + list_for_each_entry(c, &clocks, node) { + if (strcmp(c->name, name) == 0) { + ret = c; + break; + } + } + spin_unlock_irqrestore(&clock_lock, flags); + return ret; +} + +static void clk_recalculate_rate(struct clk *c) +{ + u64 rate; + + if (!c->parent) + return; + + rate = c->parent->rate; + + if (c->mul != 0 && c->div != 0) { + rate = rate * c->mul; + do_div(rate, c->div); + } + + if (rate > c->max_rate) + pr_warn("clocks: Set clock %s to rate %llu, max is %lu\n", + c->name, rate, c->max_rate); + + c->rate = rate; +} + +int clk_reparent(struct clk *c, struct clk *parent) +{ + pr_debug("%s: %s\n", __func__, c->name); + c->parent = parent; + list_del(&c->sibling); + list_add_tail(&c->sibling, &parent->children); + return 0; +} + +static void propagate_rate(struct clk *c) +{ + struct clk *clkp; + pr_debug("%s: %s\n", __func__, c->name); + list_for_each_entry(clkp, &c->children, sibling) { + pr_debug(" %s\n", clkp->name); + clk_recalculate_rate(clkp); + propagate_rate(clkp); + } +} + +void clk_init(struct clk *c) +{ + unsigned long flags; + + pr_debug("%s: %s\n", __func__, c->name); + + spin_lock_irqsave(&clock_lock, flags); + + INIT_LIST_HEAD(&c->children); + INIT_LIST_HEAD(&c->sibling); + + if (c->ops && c->ops->init) + c->ops->init(c); + + clk_recalculate_rate(c); + + list_add(&c->node, &clocks); + + if (c->parent) + list_add_tail(&c->sibling, &c->parent->children); + + spin_unlock_irqrestore(&clock_lock, flags); +} + +int clk_enable_locked(struct clk *c) +{ + int ret; + pr_debug("%s: %s\n", __func__, c->name); + if (c->refcnt == 0) { + if (c->parent) { + ret = clk_enable_locked(c->parent); + if (ret) + return ret; + } + + if (c->ops && c->ops->enable) { + ret = c->ops->enable(c); + if (ret) { + if (c->parent) + clk_disable_locked(c->parent); + return ret; + } + c->state = ON; +#ifdef CONFIG_DEBUG_FS + c->set = 1; +#endif + } + } + c->refcnt++; + + return 0; +} + +int clk_enable_cansleep(struct clk *c) +{ + int ret; + unsigned long flags; + + mutex_lock(&dvfs_lock); + + if (clk_is_dvfs(c) && c->refcnt > 0) + dvfs_set_rate(c->dvfs, c->rate); + + spin_lock_irqsave(&clock_lock, flags); + ret = clk_enable_locked(c); + spin_unlock_irqrestore(&clock_lock, flags); + + mutex_unlock(&dvfs_lock); + + return ret; +} +EXPORT_SYMBOL(clk_enable_cansleep); + +int clk_enable(struct clk *c) +{ + int ret; + unsigned long flags; + + if (clk_is_dvfs(c)) + BUG(); + + spin_lock_irqsave(&clock_lock, flags); + ret = clk_enable_locked(c); + spin_unlock_irqrestore(&clock_lock, flags); + + return ret; +} +EXPORT_SYMBOL(clk_enable); + +void clk_disable_locked(struct clk *c) +{ + pr_debug("%s: %s\n", __func__, c->name); + if (c->refcnt == 0) { + WARN(1, "Attempting to disable clock %s with refcnt 0", c->name); + return; + } + if (c->refcnt == 1) { + if (c->ops && c->ops->disable) + c->ops->disable(c); + + if (c->parent) + clk_disable_locked(c->parent); + + c->state = OFF; + } + c->refcnt--; +} + +void clk_disable_cansleep(struct clk *c) +{ + unsigned long flags; + + mutex_lock(&dvfs_lock); + + spin_lock_irqsave(&clock_lock, flags); + clk_disable_locked(c); + spin_unlock_irqrestore(&clock_lock, flags); + + if (clk_is_dvfs(c) && c->refcnt == 0) + dvfs_set_rate(c->dvfs, c->rate); + + mutex_unlock(&dvfs_lock); +} +EXPORT_SYMBOL(clk_disable_cansleep); + +void clk_disable(struct clk *c) +{ + unsigned long flags; + + if (clk_is_dvfs(c)) + BUG(); + + spin_lock_irqsave(&clock_lock, flags); + clk_disable_locked(c); + spin_unlock_irqrestore(&clock_lock, flags); +} +EXPORT_SYMBOL(clk_disable); + +int clk_set_parent_locked(struct clk *c, struct clk *parent) +{ + int ret; + + pr_debug("%s: %s\n", __func__, c->name); + + if (!c->ops || !c->ops->set_parent) + return -ENOSYS; + + ret = c->ops->set_parent(c, parent); + + if (ret) + return ret; + + clk_recalculate_rate(c); + + propagate_rate(c); + + return 0; +} + +int clk_set_parent(struct clk *c, struct clk *parent) +{ + int ret; + unsigned long flags; + spin_lock_irqsave(&clock_lock, flags); + ret = clk_set_parent_locked(c, parent); + spin_unlock_irqrestore(&clock_lock, flags); + return ret; +} +EXPORT_SYMBOL(clk_set_parent); + +struct clk *clk_get_parent(struct clk *c) +{ + return c->parent; +} +EXPORT_SYMBOL(clk_get_parent); + +int clk_set_rate_locked(struct clk *c, unsigned long rate) +{ + int ret; + + if (rate > c->max_rate) + rate = c->max_rate; + + if (!c->ops || !c->ops->set_rate) + return -ENOSYS; + + ret = c->ops->set_rate(c, rate); + + if (ret) + return ret; + + clk_recalculate_rate(c); + + propagate_rate(c); + + return 0; +} + +int clk_set_rate_cansleep(struct clk *c, unsigned long rate) +{ + int ret = 0; + unsigned long flags; + + pr_debug("%s: %s\n", __func__, c->name); + + mutex_lock(&dvfs_lock); + + if (rate > c->rate) + ret = dvfs_set_rate(c->dvfs, rate); + if (ret) + goto out; + + spin_lock_irqsave(&clock_lock, flags); + ret = clk_set_rate_locked(c, rate); + spin_unlock_irqrestore(&clock_lock, flags); + + if (ret) + goto out; + + ret = dvfs_set_rate(c->dvfs, rate); + +out: + mutex_unlock(&dvfs_lock); + return ret; +} +EXPORT_SYMBOL(clk_set_rate_cansleep); + +int clk_set_rate(struct clk *c, unsigned long rate) +{ + int ret = 0; + unsigned long flags; + + pr_debug("%s: %s\n", __func__, c->name); + + if (clk_is_dvfs(c)) + BUG(); + + spin_lock_irqsave(&clock_lock, flags); + ret = clk_set_rate_locked(c, rate); + spin_unlock_irqrestore(&clock_lock, flags); + + return ret; +} +EXPORT_SYMBOL(clk_set_rate); + +unsigned long clk_get_rate(struct clk *c) +{ + unsigned long flags; + unsigned long ret; + + spin_lock_irqsave(&clock_lock, flags); + + pr_debug("%s: %s\n", __func__, c->name); + + ret = c->rate; + + spin_unlock_irqrestore(&clock_lock, flags); + return ret; +} +EXPORT_SYMBOL(clk_get_rate); + +long clk_round_rate(struct clk *c, unsigned long rate) +{ + pr_debug("%s: %s\n", __func__, c->name); + + if (!c->ops || !c->ops->round_rate) + return -ENOSYS; + + if (rate > c->max_rate) + rate = c->max_rate; + + return c->ops->round_rate(c, rate); +} +EXPORT_SYMBOL(clk_round_rate); + +static int tegra_clk_init_one_from_table(struct tegra_clk_init_table *table) +{ + struct clk *c; + struct clk *p; + + int ret = 0; + + c = tegra_get_clock_by_name(table->name); + + if (!c) { + pr_warning("Unable to initialize clock %s\n", + table->name); + return -ENODEV; + } + + if (table->parent) { + p = tegra_get_clock_by_name(table->parent); + if (!p) { + pr_warning("Unable to find parent %s of clock %s\n", + table->parent, table->name); + return -ENODEV; + } + + if (c->parent != p) { + ret = clk_set_parent(c, p); + if (ret) { + pr_warning("Unable to set parent %s of clock %s: %d\n", + table->parent, table->name, ret); + return -EINVAL; + } + } + } + + if (table->rate && table->rate != clk_get_rate(c)) { + ret = clk_set_rate(c, table->rate); + if (ret) { + pr_warning("Unable to set clock %s to rate %lu: %d\n", + table->name, table->rate, ret); + return -EINVAL; + } + } + + if (table->enabled) { + ret = clk_enable(c); + if (ret) { + pr_warning("Unable to enable clock %s: %d\n", + table->name, ret); + return -EINVAL; + } + } + + return 0; +} + +void tegra_clk_init_from_table(struct tegra_clk_init_table *table) +{ + for (; table->name; table++) + tegra_clk_init_one_from_table(table); +} +EXPORT_SYMBOL(tegra_clk_init_from_table); + +void tegra_periph_reset_deassert(struct clk *c) +{ + tegra2_periph_reset_deassert(c); +} +EXPORT_SYMBOL(tegra_periph_reset_deassert); + +void tegra_periph_reset_assert(struct clk *c) +{ + tegra2_periph_reset_assert(c); +} +EXPORT_SYMBOL(tegra_periph_reset_assert); + +void __init tegra_init_clock(void) +{ + tegra2_init_clocks(); +} + +int __init tegra_init_dvfs(void) +{ + struct clk *c, *safe; + + mutex_lock(&dvfs_lock); + + list_for_each_entry_safe(c, safe, &clocks, node) + if (c->dvfs) + dvfs_init(c); + + mutex_unlock(&dvfs_lock); + + return 0; +} + +late_initcall(tegra_init_dvfs); + +#ifdef CONFIG_DEBUG_FS +static struct dentry *clk_debugfs_root; + + +static void clock_tree_show_one(struct seq_file *s, struct clk *c, int level) +{ + struct clk *child; + struct clk *safe; + const char *state = "uninit"; + char div[8] = {0}; + + if (c->state == ON) + state = "on"; + else if (c->state == OFF) + state = "off"; + + if (c->mul != 0 && c->div != 0) { + if (c->mul > c->div) { + int mul = c->mul / c->div; + int mul2 = (c->mul * 10 / c->div) % 10; + int mul3 = (c->mul * 10) % c->div; + if (mul2 == 0 && mul3 == 0) + snprintf(div, sizeof(div), "x%d", mul); + else if (mul3 == 0) + snprintf(div, sizeof(div), "x%d.%d", mul, mul2); + else + snprintf(div, sizeof(div), "x%d.%d..", mul, mul2); + } else { + snprintf(div, sizeof(div), "%d%s", c->div / c->mul, + (c->div % c->mul) ? ".5" : ""); + } + } + + seq_printf(s, "%*s%c%c%-*s %-6s %-3d %-8s %-10lu\n", + level * 3 + 1, "", + c->rate > c->max_rate ? '!' : ' ', + !c->set ? '*' : ' ', + 30 - level * 3, c->name, + state, c->refcnt, div, c->rate); + list_for_each_entry_safe(child, safe, &c->children, sibling) { + clock_tree_show_one(s, child, level + 1); + } +} + +static int clock_tree_show(struct seq_file *s, void *data) +{ + struct clk *c; + unsigned long flags; + seq_printf(s, " clock state ref div rate\n"); + seq_printf(s, "--------------------------------------------------------------\n"); + spin_lock_irqsave(&clock_lock, flags); + list_for_each_entry(c, &clocks, node) + if (c->parent == NULL) + clock_tree_show_one(s, c, 0); + spin_unlock_irqrestore(&clock_lock, flags); + return 0; +} + +static int clock_tree_open(struct inode *inode, struct file *file) +{ + return single_open(file, clock_tree_show, inode->i_private); +} + +static const struct file_operations clock_tree_fops = { + .open = clock_tree_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int possible_parents_show(struct seq_file *s, void *data) +{ + struct clk *c = s->private; + int i; + + for (i = 0; c->inputs[i].input; i++) { + char *first = (i == 0) ? "" : " "; + seq_printf(s, "%s%s", first, c->inputs[i].input->name); + } + seq_printf(s, "\n"); + return 0; +} + +static int possible_parents_open(struct inode *inode, struct file *file) +{ + return single_open(file, possible_parents_show, inode->i_private); +} + +static const struct file_operations possible_parents_fops = { + .open = possible_parents_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int clk_debugfs_register_one(struct clk *c) +{ + struct dentry *d, *child, *child_tmp; + + d = debugfs_create_dir(c->name, clk_debugfs_root); + if (!d) + return -ENOMEM; + c->dent = d; + + d = debugfs_create_u8("refcnt", S_IRUGO, c->dent, (u8 *)&c->refcnt); + if (!d) + goto err_out; + + d = debugfs_create_u32("rate", S_IRUGO, c->dent, (u32 *)&c->rate); + if (!d) + goto err_out; + + d = debugfs_create_x32("flags", S_IRUGO, c->dent, (u32 *)&c->flags); + if (!d) + goto err_out; + + if (c->inputs) { + d = debugfs_create_file("possible_parents", S_IRUGO, c->dent, + c, &possible_parents_fops); + if (!d) + goto err_out; + } + + return 0; + +err_out: + d = c->dent; + list_for_each_entry_safe(child, child_tmp, &d->d_subdirs, d_u.d_child) + debugfs_remove(child); + debugfs_remove(c->dent); + return -ENOMEM; +} + +static int clk_debugfs_register(struct clk *c) +{ + int err; + struct clk *pa = c->parent; + + if (pa && !pa->dent) { + err = clk_debugfs_register(pa); + if (err) + return err; + } + + if (!c->dent) { + err = clk_debugfs_register_one(c); + if (err) + return err; + } + return 0; +} + +static int __init clk_debugfs_init(void) +{ + struct clk *c; + struct dentry *d; + int err = -ENOMEM; + + d = debugfs_create_dir("clock", NULL); + if (!d) + return -ENOMEM; + clk_debugfs_root = d; + + d = debugfs_create_file("clock_tree", S_IRUGO, clk_debugfs_root, NULL, + &clock_tree_fops); + if (!d) + goto err_out; + + list_for_each_entry(c, &clocks, node) { + err = clk_debugfs_register(c); + if (err) + goto err_out; + } + return 0; +err_out: + debugfs_remove_recursive(clk_debugfs_root); + return err; +} + +late_initcall(clk_debugfs_init); +#endif diff --git a/arch/arm/mach-tegra/clock.h b/arch/arm/mach-tegra/clock.h new file mode 100644 index 00000000000..94fd859770f --- /dev/null +++ b/arch/arm/mach-tegra/clock.h @@ -0,0 +1,173 @@ +/* + * arch/arm/mach-tegra/include/mach/clock.h + * + * Copyright (C) 2010 Google, Inc. + * + * Author: + * Colin Cross <ccross@google.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __MACH_TEGRA_CLOCK_H +#define __MACH_TEGRA_CLOCK_H + +#include <linux/list.h> +#include <asm/clkdev.h> + +#define DIV_BUS (1 << 0) +#define DIV_U71 (1 << 1) +#define DIV_U71_FIXED (1 << 2) +#define DIV_2 (1 << 3) +#define DIV_U16 (1 << 4) +#define PLL_FIXED (1 << 5) +#define PLL_HAS_CPCON (1 << 6) +#define MUX (1 << 7) +#define PLLD (1 << 8) +#define PERIPH_NO_RESET (1 << 9) +#define PERIPH_NO_ENB (1 << 10) +#define PERIPH_EMC_ENB (1 << 11) +#define PERIPH_MANUAL_RESET (1 << 12) +#define PLL_ALT_MISC_REG (1 << 13) +#define PLLU (1 << 14) +#define ENABLE_ON_INIT (1 << 28) + +struct clk; +struct regulator; + +struct dvfs_table { + unsigned long rate; + int millivolts; +}; + +struct dvfs_process_id_table { + int process_id; + struct dvfs_table *table; +}; + + +struct dvfs { + struct regulator *reg; + struct dvfs_table *table; + int max_millivolts; + + int process_id_table_length; + const char *reg_id; + bool cpu; + struct dvfs_process_id_table process_id_table[]; +}; + +struct clk_mux_sel { + struct clk *input; + u32 value; +}; + +struct clk_pll_table { + unsigned long input_rate; + unsigned long output_rate; + u16 n; + u16 m; + u8 p; + u8 cpcon; +}; + +struct clk_ops { + void (*init)(struct clk *); + int (*enable)(struct clk *); + void (*disable)(struct clk *); + int (*set_parent)(struct clk *, struct clk *); + int (*set_rate)(struct clk *, unsigned long); + long (*round_rate)(struct clk *, unsigned long); +}; + +enum clk_state { + UNINITIALIZED = 0, + ON, + OFF, +}; + +struct clk { + /* node for master clocks list */ + struct list_head node; + struct list_head children; /* list of children */ + struct list_head sibling; /* node for children */ +#ifdef CONFIG_DEBUG_FS + struct dentry *dent; + struct dentry *parent_dent; +#endif + struct clk_ops *ops; + struct clk *parent; + struct clk_lookup lookup; + unsigned long rate; + unsigned long max_rate; + u32 flags; + u32 refcnt; + const char *name; + u32 reg; + u32 reg_shift; + unsigned int clk_num; + enum clk_state state; +#ifdef CONFIG_DEBUG_FS + bool set; +#endif + + /* PLL */ + unsigned long input_min; + unsigned long input_max; + unsigned long cf_min; + unsigned long cf_max; + unsigned long vco_min; + unsigned long vco_max; + const struct clk_pll_table *pll_table; + + /* DIV */ + u32 div; + u32 mul; + + /* MUX */ + const struct clk_mux_sel *inputs; + u32 sel; + u32 reg_mask; + + /* Virtual cpu clock */ + struct clk *main; + struct clk *backup; + + struct dvfs *dvfs; +}; + + +struct clk_duplicate { + const char *name; + struct clk_lookup lookup; +}; + +struct tegra_clk_init_table { + const char *name; + const char *parent; + unsigned long rate; + bool enabled; +}; + +void tegra2_init_clocks(void); +void tegra2_periph_reset_deassert(struct clk *c); +void tegra2_periph_reset_assert(struct clk *c); +void clk_init(struct clk *clk); +struct clk *tegra_get_clock_by_name(const char *name); +unsigned long clk_measure_input_freq(void); +void clk_disable_locked(struct clk *c); +int clk_enable_locked(struct clk *c); +int clk_set_parent_locked(struct clk *c, struct clk *parent); +int clk_set_rate_locked(struct clk *c, unsigned long rate); +int clk_reparent(struct clk *c, struct clk *parent); +void tegra_clk_init_from_table(struct tegra_clk_init_table *table); + +#endif diff --git a/arch/arm/mach-tegra/common.c b/arch/arm/mach-tegra/common.c new file mode 100644 index 00000000000..7c91e2b9d64 --- /dev/null +++ b/arch/arm/mach-tegra/common.c @@ -0,0 +1,70 @@ +/* + * arch/arm/mach-tegra/board-harmony.c + * + * Copyright (C) 2010 Google, Inc. + * + * Author: + * Colin Cross <ccross@android.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/init.h> +#include <linux/io.h> +#include <linux/clk.h> +#include <linux/delay.h> + +#include <asm/hardware/cache-l2x0.h> + +#include <mach/iomap.h> +#include <mach/dma.h> + +#include "board.h" +#include "clock.h" +#include "fuse.h" + +static __initdata struct tegra_clk_init_table common_clk_init_table[] = { + /* name parent rate enabled */ + { "clk_m", NULL, 0, true }, + { "pll_p", "clk_m", 216000000, true }, + { "pll_p_out1", "pll_p", 28800000, true }, + { "pll_p_out2", "pll_p", 48000000, true }, + { "pll_p_out3", "pll_p", 72000000, true }, + { "pll_p_out4", "pll_p", 108000000, true }, + { "sclk", "pll_p_out4", 108000000, true }, + { "hclk", "sclk", 108000000, true }, + { "pclk", "hclk", 54000000, true }, + { NULL, NULL, 0, 0}, +}; + +void __init tegra_init_cache(void) +{ +#ifdef CONFIG_CACHE_L2X0 + void __iomem *p = IO_ADDRESS(TEGRA_ARM_PERIF_BASE) + 0x3000; + + writel(0x331, p + L2X0_TAG_LATENCY_CTRL); + writel(0x441, p + L2X0_DATA_LATENCY_CTRL); + + l2x0_init(p, 0x6C080001, 0x8200c3fe); +#endif + +} + +void __init tegra_common_init(void) +{ + tegra_init_fuse(); + tegra_init_clock(); + tegra_clk_init_from_table(common_clk_init_table); + tegra_init_cache(); +#ifdef CONFIG_TEGRA_SYSTEM_DMA + tegra_dma_init(); +#endif +} diff --git a/arch/arm/mach-tegra/cpu-tegra.c b/arch/arm/mach-tegra/cpu-tegra.c new file mode 100644 index 00000000000..fea5719c707 --- /dev/null +++ b/arch/arm/mach-tegra/cpu-tegra.c @@ -0,0 +1,185 @@ +/* + * arch/arm/mach-tegra/cpu-tegra.c + * + * Copyright (C) 2010 Google, Inc. + * + * Author: + * Colin Cross <ccross@google.com> + * Based on arch/arm/plat-omap/cpu-omap.c, (C) 2005 Nokia Corporation + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/types.h> +#include <linux/sched.h> +#include <linux/cpufreq.h> +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/err.h> +#include <linux/clk.h> +#include <linux/io.h> + +#include <asm/system.h> + +#include <mach/hardware.h> +#include <mach/clk.h> + +/* Frequency table index must be sequential starting at 0 */ +static struct cpufreq_frequency_table freq_table[] = { + { 0, 312000 }, + { 1, 456000 }, + { 2, 608000 }, + { 3, 760000 }, + { 4, 816000 }, + { 5, 912000 }, + { 6, 1000000 }, + { 7, CPUFREQ_TABLE_END }, +}; + +#define NUM_CPUS 2 + +static struct clk *cpu_clk; + +static unsigned long target_cpu_speed[NUM_CPUS]; + +int tegra_verify_speed(struct cpufreq_policy *policy) +{ + return cpufreq_frequency_table_verify(policy, freq_table); +} + +unsigned int tegra_getspeed(unsigned int cpu) +{ + unsigned long rate; + + if (cpu >= NUM_CPUS) + return 0; + + rate = clk_get_rate(cpu_clk) / 1000; + return rate; +} + +static int tegra_update_cpu_speed(void) +{ + int i; + unsigned long rate = 0; + int ret = 0; + struct cpufreq_freqs freqs; + + for_each_online_cpu(i) + rate = max(rate, target_cpu_speed[i]); + + freqs.old = tegra_getspeed(0); + freqs.new = rate; + + if (freqs.old == freqs.new) + return ret; + + for_each_online_cpu(freqs.cpu) + cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE); + +#ifdef CONFIG_CPU_FREQ_DEBUG + printk(KERN_DEBUG "cpufreq-tegra: transition: %u --> %u\n", + freqs.old, freqs.new); +#endif + + ret = clk_set_rate_cansleep(cpu_clk, freqs.new * 1000); + if (ret) { + pr_err("cpu-tegra: Failed to set cpu frequency to %d kHz\n", + freqs.new); + return ret; + } + + for_each_online_cpu(freqs.cpu) + cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE); + + return 0; +} + +static int tegra_target(struct cpufreq_policy *policy, + unsigned int target_freq, + unsigned int relation) +{ + int idx; + unsigned int freq; + + cpufreq_frequency_table_target(policy, freq_table, target_freq, + relation, &idx); + + freq = freq_table[idx].frequency; + + target_cpu_speed[policy->cpu] = freq; + + return tegra_update_cpu_speed(); +} + +static int tegra_cpu_init(struct cpufreq_policy *policy) +{ + if (policy->cpu >= NUM_CPUS) + return -EINVAL; + + cpu_clk = clk_get_sys(NULL, "cpu"); + if (IS_ERR(cpu_clk)) + return PTR_ERR(cpu_clk); + + cpufreq_frequency_table_cpuinfo(policy, freq_table); + cpufreq_frequency_table_get_attr(freq_table, policy->cpu); + policy->cur = tegra_getspeed(policy->cpu); + target_cpu_speed[policy->cpu] = policy->cur; + + /* FIXME: what's the actual transition time? */ + policy->cpuinfo.transition_latency = 300 * 1000; + + policy->shared_type = CPUFREQ_SHARED_TYPE_ALL; + cpumask_copy(policy->related_cpus, cpu_possible_mask); + + return 0; +} + +static int tegra_cpu_exit(struct cpufreq_policy *policy) +{ + cpufreq_frequency_table_cpuinfo(policy, freq_table); + clk_put(cpu_clk); + return 0; +} + +static struct freq_attr *tegra_cpufreq_attr[] = { + &cpufreq_freq_attr_scaling_available_freqs, + NULL, +}; + +static struct cpufreq_driver tegra_cpufreq_driver = { + .verify = tegra_verify_speed, + .target = tegra_target, + .get = tegra_getspeed, + .init = tegra_cpu_init, + .exit = tegra_cpu_exit, + .name = "tegra", + .attr = tegra_cpufreq_attr, +}; + +static int __init tegra_cpufreq_init(void) +{ + return cpufreq_register_driver(&tegra_cpufreq_driver); +} + +static void __exit tegra_cpufreq_exit(void) +{ + cpufreq_unregister_driver(&tegra_cpufreq_driver); +} + + +MODULE_AUTHOR("Colin Cross <ccross@android.com>"); +MODULE_DESCRIPTION("cpufreq driver for Nvidia Tegra2"); +MODULE_LICENSE("GPL"); +module_init(tegra_cpufreq_init); +module_exit(tegra_cpufreq_exit); diff --git a/arch/arm/mach-tegra/dma.c b/arch/arm/mach-tegra/dma.c new file mode 100644 index 00000000000..edda6ec5e92 --- /dev/null +++ b/arch/arm/mach-tegra/dma.c @@ -0,0 +1,752 @@ +/* + * arch/arm/mach-tegra/dma.c + * + * System DMA driver for NVIDIA Tegra SoCs + * + * Copyright (c) 2008-2009, NVIDIA Corporation. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include <linux/io.h> +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/spinlock.h> +#include <linux/err.h> +#include <linux/irq.h> +#include <linux/delay.h> +#include <mach/dma.h> +#include <mach/irqs.h> +#include <mach/iomap.h> + +#define APB_DMA_GEN 0x000 +#define GEN_ENABLE (1<<31) + +#define APB_DMA_CNTRL 0x010 + +#define APB_DMA_IRQ_MASK 0x01c + +#define APB_DMA_IRQ_MASK_SET 0x020 + +#define APB_DMA_CHAN_CSR 0x000 +#define CSR_ENB (1<<31) +#define CSR_IE_EOC (1<<30) +#define CSR_HOLD (1<<29) +#define CSR_DIR (1<<28) +#define CSR_ONCE (1<<27) +#define CSR_FLOW (1<<21) +#define CSR_REQ_SEL_SHIFT 16 +#define CSR_REQ_SEL_MASK (0x1F<<CSR_REQ_SEL_SHIFT) +#define CSR_REQ_SEL_INVALID (31<<CSR_REQ_SEL_SHIFT) +#define CSR_WCOUNT_SHIFT 2 +#define CSR_WCOUNT_MASK 0xFFFC + +#define APB_DMA_CHAN_STA 0x004 +#define STA_BUSY (1<<31) +#define STA_ISE_EOC (1<<30) +#define STA_HALT (1<<29) +#define STA_PING_PONG (1<<28) +#define STA_COUNT_SHIFT 2 +#define STA_COUNT_MASK 0xFFFC + +#define APB_DMA_CHAN_AHB_PTR 0x010 + +#define APB_DMA_CHAN_AHB_SEQ 0x014 +#define AHB_SEQ_INTR_ENB (1<<31) +#define AHB_SEQ_BUS_WIDTH_SHIFT 28 +#define AHB_SEQ_BUS_WIDTH_MASK (0x7<<AHB_SEQ_BUS_WIDTH_SHIFT) +#define AHB_SEQ_BUS_WIDTH_8 (0<<AHB_SEQ_BUS_WIDTH_SHIFT) +#define AHB_SEQ_BUS_WIDTH_16 (1<<AHB_SEQ_BUS_WIDTH_SHIFT) +#define AHB_SEQ_BUS_WIDTH_32 (2<<AHB_SEQ_BUS_WIDTH_SHIFT) +#define AHB_SEQ_BUS_WIDTH_64 (3<<AHB_SEQ_BUS_WIDTH_SHIFT) +#define AHB_SEQ_BUS_WIDTH_128 (4<<AHB_SEQ_BUS_WIDTH_SHIFT) +#define AHB_SEQ_DATA_SWAP (1<<27) +#define AHB_SEQ_BURST_MASK (0x7<<24) +#define AHB_SEQ_BURST_1 (4<<24) +#define AHB_SEQ_BURST_4 (5<<24) +#define AHB_SEQ_BURST_8 (6<<24) +#define AHB_SEQ_DBL_BUF (1<<19) +#define AHB_SEQ_WRAP_SHIFT 16 +#define AHB_SEQ_WRAP_MASK (0x7<<AHB_SEQ_WRAP_SHIFT) + +#define APB_DMA_CHAN_APB_PTR 0x018 + +#define APB_DMA_CHAN_APB_SEQ 0x01c +#define APB_SEQ_BUS_WIDTH_SHIFT 28 +#define APB_SEQ_BUS_WIDTH_MASK (0x7<<APB_SEQ_BUS_WIDTH_SHIFT) +#define APB_SEQ_BUS_WIDTH_8 (0<<APB_SEQ_BUS_WIDTH_SHIFT) +#define APB_SEQ_BUS_WIDTH_16 (1<<APB_SEQ_BUS_WIDTH_SHIFT) +#define APB_SEQ_BUS_WIDTH_32 (2<<APB_SEQ_BUS_WIDTH_SHIFT) +#define APB_SEQ_BUS_WIDTH_64 (3<<APB_SEQ_BUS_WIDTH_SHIFT) +#define APB_SEQ_BUS_WIDTH_128 (4<<APB_SEQ_BUS_WIDTH_SHIFT) +#define APB_SEQ_DATA_SWAP (1<<27) +#define APB_SEQ_WRAP_SHIFT 16 +#define APB_SEQ_WRAP_MASK (0x7<<APB_SEQ_WRAP_SHIFT) + +#define TEGRA_SYSTEM_DMA_CH_NR 16 +#define TEGRA_SYSTEM_DMA_AVP_CH_NUM 4 +#define TEGRA_SYSTEM_DMA_CH_MIN 0 +#define TEGRA_SYSTEM_DMA_CH_MAX \ + (TEGRA_SYSTEM_DMA_CH_NR - TEGRA_SYSTEM_DMA_AVP_CH_NUM - 1) + +#define NV_DMA_MAX_TRASFER_SIZE 0x10000 + +const unsigned int ahb_addr_wrap_table[8] = { + 0, 32, 64, 128, 256, 512, 1024, 2048 +}; + +const unsigned int apb_addr_wrap_table[8] = {0, 1, 2, 4, 8, 16, 32, 64}; + +const unsigned int bus_width_table[5] = {8, 16, 32, 64, 128}; + +#define TEGRA_DMA_NAME_SIZE 16 +struct tegra_dma_channel { + struct list_head list; + int id; + spinlock_t lock; + char name[TEGRA_DMA_NAME_SIZE]; + void __iomem *addr; + int mode; + int irq; + + /* Register shadow */ + u32 csr; + u32 ahb_seq; + u32 ahb_ptr; + u32 apb_seq; + u32 apb_ptr; +}; + +#define NV_DMA_MAX_CHANNELS 32 + +static DECLARE_BITMAP(channel_usage, NV_DMA_MAX_CHANNELS); +static struct tegra_dma_channel dma_channels[NV_DMA_MAX_CHANNELS]; + +static void tegra_dma_update_hw(struct tegra_dma_channel *ch, + struct tegra_dma_req *req); +static void tegra_dma_update_hw_partial(struct tegra_dma_channel *ch, + struct tegra_dma_req *req); +static void tegra_dma_init_hw(struct tegra_dma_channel *ch); +static void tegra_dma_stop(struct tegra_dma_channel *ch); + +void tegra_dma_flush(struct tegra_dma_channel *ch) +{ +} +EXPORT_SYMBOL(tegra_dma_flush); + +void tegra_dma_dequeue(struct tegra_dma_channel *ch) +{ + struct tegra_dma_req *req; + + req = list_entry(ch->list.next, typeof(*req), node); + + tegra_dma_dequeue_req(ch, req); + return; +} + +void tegra_dma_stop(struct tegra_dma_channel *ch) +{ + unsigned int csr; + unsigned int status; + + csr = ch->csr; + csr &= ~CSR_IE_EOC; + writel(csr, ch->addr + APB_DMA_CHAN_CSR); + + csr &= ~CSR_ENB; + writel(csr, ch->addr + APB_DMA_CHAN_CSR); + + status = readl(ch->addr + APB_DMA_CHAN_STA); + if (status & STA_ISE_EOC) + writel(status, ch->addr + APB_DMA_CHAN_STA); +} + +int tegra_dma_cancel(struct tegra_dma_channel *ch) +{ + unsigned int csr; + unsigned long irq_flags; + + spin_lock_irqsave(&ch->lock, irq_flags); + while (!list_empty(&ch->list)) + list_del(ch->list.next); + + csr = ch->csr; + csr &= ~CSR_REQ_SEL_MASK; + csr |= CSR_REQ_SEL_INVALID; + + /* Set the enable as that is not shadowed */ + csr |= CSR_ENB; + writel(csr, ch->addr + APB_DMA_CHAN_CSR); + + tegra_dma_stop(ch); + + spin_unlock_irqrestore(&ch->lock, irq_flags); + return 0; +} + +int tegra_dma_dequeue_req(struct tegra_dma_channel *ch, + struct tegra_dma_req *_req) +{ + unsigned int csr; + unsigned int status; + struct tegra_dma_req *req = NULL; + int found = 0; + unsigned long irq_flags; + int to_transfer; + int req_transfer_count; + + spin_lock_irqsave(&ch->lock, irq_flags); + list_for_each_entry(req, &ch->list, node) { + if (req == _req) { + list_del(&req->node); + found = 1; + break; + } + } + if (!found) { + spin_unlock_irqrestore(&ch->lock, irq_flags); + return 0; + } + + /* STOP the DMA and get the transfer count. + * Getting the transfer count is tricky. + * - Change the source selector to invalid to stop the DMA from + * FIFO to memory. + * - Read the status register to know the number of pending + * bytes to be transfered. + * - Finally stop or program the DMA to the next buffer in the + * list. + */ + csr = ch->csr; + csr &= ~CSR_REQ_SEL_MASK; + csr |= CSR_REQ_SEL_INVALID; + + /* Set the enable as that is not shadowed */ + csr |= CSR_ENB; + writel(csr, ch->addr + APB_DMA_CHAN_CSR); + + /* Get the transfer count */ + status = readl(ch->addr + APB_DMA_CHAN_STA); + to_transfer = (status & STA_COUNT_MASK) >> STA_COUNT_SHIFT; + req_transfer_count = (ch->csr & CSR_WCOUNT_MASK) >> CSR_WCOUNT_SHIFT; + req_transfer_count += 1; + to_transfer += 1; + + req->bytes_transferred = req_transfer_count; + + if (status & STA_BUSY) + req->bytes_transferred -= to_transfer; + + /* In continous transfer mode, DMA only tracks the count of the + * half DMA buffer. So, if the DMA already finished half the DMA + * then add the half buffer to the completed count. + * + * FIXME: There can be a race here. What if the req to + * dequue happens at the same time as the DMA just moved to + * the new buffer and SW didn't yet received the interrupt? + */ + if (ch->mode & TEGRA_DMA_MODE_CONTINOUS) + if (req->buffer_status == TEGRA_DMA_REQ_BUF_STATUS_HALF_FULL) + req->bytes_transferred += req_transfer_count; + + req->bytes_transferred *= 4; + + tegra_dma_stop(ch); + if (!list_empty(&ch->list)) { + /* if the list is not empty, queue the next request */ + struct tegra_dma_req *next_req; + next_req = list_entry(ch->list.next, + typeof(*next_req), node); + tegra_dma_update_hw(ch, next_req); + } + req->status = -TEGRA_DMA_REQ_ERROR_ABORTED; + + spin_unlock_irqrestore(&ch->lock, irq_flags); + + /* Callback should be called without any lock */ + req->complete(req); + return 0; +} +EXPORT_SYMBOL(tegra_dma_dequeue_req); + +bool tegra_dma_is_empty(struct tegra_dma_channel *ch) +{ + unsigned long irq_flags; + bool is_empty; + + spin_lock_irqsave(&ch->lock, irq_flags); + if (list_empty(&ch->list)) + is_empty = true; + else + is_empty = false; + spin_unlock_irqrestore(&ch->lock, irq_flags); + return is_empty; +} +EXPORT_SYMBOL(tegra_dma_is_empty); + +bool tegra_dma_is_req_inflight(struct tegra_dma_channel *ch, + struct tegra_dma_req *_req) +{ + unsigned long irq_flags; + struct tegra_dma_req *req; + + spin_lock_irqsave(&ch->lock, irq_flags); + list_for_each_entry(req, &ch->list, node) { + if (req == _req) { + spin_unlock_irqrestore(&ch->lock, irq_flags); + return true; + } + } + spin_unlock_irqrestore(&ch->lock, irq_flags); + return false; +} +EXPORT_SYMBOL(tegra_dma_is_req_inflight); + +int tegra_dma_enqueue_req(struct tegra_dma_channel *ch, + struct tegra_dma_req *req) +{ + unsigned long irq_flags; + int start_dma = 0; + + if (req->size > NV_DMA_MAX_TRASFER_SIZE || + req->source_addr & 0x3 || req->dest_addr & 0x3) { + pr_err("Invalid DMA request for channel %d\n", ch->id); + return -EINVAL; + } + + spin_lock_irqsave(&ch->lock, irq_flags); + + req->bytes_transferred = 0; + req->status = 0; + req->buffer_status = 0; + if (list_empty(&ch->list)) + start_dma = 1; + + list_add_tail(&req->node, &ch->list); + + if (start_dma) + tegra_dma_update_hw(ch, req); + + spin_unlock_irqrestore(&ch->lock, irq_flags); + + return 0; +} +EXPORT_SYMBOL(tegra_dma_enqueue_req); + +struct tegra_dma_channel *tegra_dma_allocate_channel(int mode) +{ + int channel; + struct tegra_dma_channel *ch; + + /* first channel is the shared channel */ + if (mode & TEGRA_DMA_SHARED) { + channel = TEGRA_SYSTEM_DMA_CH_MIN; + } else { + channel = find_first_zero_bit(channel_usage, + ARRAY_SIZE(dma_channels)); + if (channel >= ARRAY_SIZE(dma_channels)) + return NULL; + } + __set_bit(channel, channel_usage); + ch = &dma_channels[channel]; + ch->mode = mode; + return ch; +} +EXPORT_SYMBOL(tegra_dma_allocate_channel); + +void tegra_dma_free_channel(struct tegra_dma_channel *ch) +{ + if (ch->mode & TEGRA_DMA_SHARED) + return; + tegra_dma_cancel(ch); + __clear_bit(ch->id, channel_usage); +} +EXPORT_SYMBOL(tegra_dma_free_channel); + +static void tegra_dma_update_hw_partial(struct tegra_dma_channel *ch, + struct tegra_dma_req *req) +{ + if (req->to_memory) { + ch->apb_ptr = req->source_addr; + ch->ahb_ptr = req->dest_addr; + } else { + ch->apb_ptr = req->dest_addr; + ch->ahb_ptr = req->source_addr; + } + writel(ch->apb_ptr, ch->addr + APB_DMA_CHAN_APB_PTR); + writel(ch->ahb_ptr, ch->addr + APB_DMA_CHAN_AHB_PTR); + + req->status = TEGRA_DMA_REQ_INFLIGHT; + return; +} + +static void tegra_dma_update_hw(struct tegra_dma_channel *ch, + struct tegra_dma_req *req) +{ + int ahb_addr_wrap; + int apb_addr_wrap; + int ahb_bus_width; + int apb_bus_width; + int index; + unsigned long csr; + + + ch->csr |= CSR_FLOW; + ch->csr &= ~CSR_REQ_SEL_MASK; + ch->csr |= req->req_sel << CSR_REQ_SEL_SHIFT; + ch->ahb_seq &= ~AHB_SEQ_BURST_MASK; + ch->ahb_seq |= AHB_SEQ_BURST_1; + + /* One shot mode is always single buffered, + * continuous mode is always double buffered + * */ + if (ch->mode & TEGRA_DMA_MODE_ONESHOT) { + ch->csr |= CSR_ONCE; + ch->ahb_seq &= ~AHB_SEQ_DBL_BUF; + ch->csr &= ~CSR_WCOUNT_MASK; + ch->csr |= ((req->size>>2) - 1) << CSR_WCOUNT_SHIFT; + } else { + ch->csr &= ~CSR_ONCE; + ch->ahb_seq |= AHB_SEQ_DBL_BUF; + + /* In double buffered mode, we set the size to half the + * requested size and interrupt when half the buffer + * is full */ + ch->csr &= ~CSR_WCOUNT_MASK; + ch->csr |= ((req->size>>3) - 1) << CSR_WCOUNT_SHIFT; + } + + if (req->to_memory) { + ch->csr &= ~CSR_DIR; + ch->apb_ptr = req->source_addr; + ch->ahb_ptr = req->dest_addr; + + apb_addr_wrap = req->source_wrap; + ahb_addr_wrap = req->dest_wrap; + apb_bus_width = req->source_bus_width; + ahb_bus_width = req->dest_bus_width; + + } else { + ch->csr |= CSR_DIR; + ch->apb_ptr = req->dest_addr; + ch->ahb_ptr = req->source_addr; + + apb_addr_wrap = req->dest_wrap; + ahb_addr_wrap = req->source_wrap; + apb_bus_width = req->dest_bus_width; + ahb_bus_width = req->source_bus_width; + } + + apb_addr_wrap >>= 2; + ahb_addr_wrap >>= 2; + + /* set address wrap for APB size */ + index = 0; + do { + if (apb_addr_wrap_table[index] == apb_addr_wrap) + break; + index++; + } while (index < ARRAY_SIZE(apb_addr_wrap_table)); + BUG_ON(index == ARRAY_SIZE(apb_addr_wrap_table)); + ch->apb_seq &= ~APB_SEQ_WRAP_MASK; + ch->apb_seq |= index << APB_SEQ_WRAP_SHIFT; + + /* set address wrap for AHB size */ + index = 0; + do { + if (ahb_addr_wrap_table[index] == ahb_addr_wrap) + break; + index++; + } while (index < ARRAY_SIZE(ahb_addr_wrap_table)); + BUG_ON(index == ARRAY_SIZE(ahb_addr_wrap_table)); + ch->ahb_seq &= ~AHB_SEQ_WRAP_MASK; + ch->ahb_seq |= index << AHB_SEQ_WRAP_SHIFT; + + for (index = 0; index < ARRAY_SIZE(bus_width_table); index++) { + if (bus_width_table[index] == ahb_bus_width) + break; + } + BUG_ON(index == ARRAY_SIZE(bus_width_table)); + ch->ahb_seq &= ~AHB_SEQ_BUS_WIDTH_MASK; + ch->ahb_seq |= index << AHB_SEQ_BUS_WIDTH_SHIFT; + + for (index = 0; index < ARRAY_SIZE(bus_width_table); index++) { + if (bus_width_table[index] == apb_bus_width) + break; + } + BUG_ON(index == ARRAY_SIZE(bus_width_table)); + ch->apb_seq &= ~APB_SEQ_BUS_WIDTH_MASK; + ch->apb_seq |= index << APB_SEQ_BUS_WIDTH_SHIFT; + + ch->csr |= CSR_IE_EOC; + + /* update hw registers with the shadow */ + writel(ch->csr, ch->addr + APB_DMA_CHAN_CSR); + writel(ch->apb_seq, ch->addr + APB_DMA_CHAN_APB_SEQ); + writel(ch->apb_ptr, ch->addr + APB_DMA_CHAN_APB_PTR); + writel(ch->ahb_seq, ch->addr + APB_DMA_CHAN_AHB_SEQ); + writel(ch->ahb_ptr, ch->addr + APB_DMA_CHAN_AHB_PTR); + + csr = ch->csr | CSR_ENB; + writel(csr, ch->addr + APB_DMA_CHAN_CSR); + + req->status = TEGRA_DMA_REQ_INFLIGHT; +} + +static void tegra_dma_init_hw(struct tegra_dma_channel *ch) +{ + /* One shot with an interrupt to CPU after transfer */ + ch->csr = CSR_ONCE | CSR_IE_EOC; + ch->ahb_seq = AHB_SEQ_BUS_WIDTH_32 | AHB_SEQ_INTR_ENB; + ch->apb_seq = APB_SEQ_BUS_WIDTH_32 | 1 << APB_SEQ_WRAP_SHIFT; +} + +static void handle_oneshot_dma(struct tegra_dma_channel *ch) +{ + struct tegra_dma_req *req; + + spin_lock(&ch->lock); + if (list_empty(&ch->list)) { + spin_unlock(&ch->lock); + return; + } + + req = list_entry(ch->list.next, typeof(*req), node); + if (req) { + int bytes_transferred; + + bytes_transferred = + (ch->csr & CSR_WCOUNT_MASK) >> CSR_WCOUNT_SHIFT; + bytes_transferred += 1; + bytes_transferred <<= 2; + + list_del(&req->node); + req->bytes_transferred = bytes_transferred; + req->status = TEGRA_DMA_REQ_SUCCESS; + + spin_unlock(&ch->lock); + /* Callback should be called without any lock */ + pr_debug("%s: transferred %d bytes\n", __func__, + req->bytes_transferred); + req->complete(req); + spin_lock(&ch->lock); + } + + if (!list_empty(&ch->list)) { + req = list_entry(ch->list.next, typeof(*req), node); + /* the complete function we just called may have enqueued + another req, in which case dma has already started */ + if (req->status != TEGRA_DMA_REQ_INFLIGHT) + tegra_dma_update_hw(ch, req); + } + spin_unlock(&ch->lock); +} + +static void handle_continuous_dma(struct tegra_dma_channel *ch) +{ + struct tegra_dma_req *req; + + spin_lock(&ch->lock); + if (list_empty(&ch->list)) { + spin_unlock(&ch->lock); + return; + } + + req = list_entry(ch->list.next, typeof(*req), node); + if (req) { + if (req->buffer_status == TEGRA_DMA_REQ_BUF_STATUS_EMPTY) { + /* Load the next request into the hardware, if available + * */ + if (!list_is_last(&req->node, &ch->list)) { + struct tegra_dma_req *next_req; + + next_req = list_entry(req->node.next, + typeof(*next_req), node); + tegra_dma_update_hw_partial(ch, next_req); + } + req->buffer_status = TEGRA_DMA_REQ_BUF_STATUS_HALF_FULL; + req->status = TEGRA_DMA_REQ_SUCCESS; + /* DMA lock is NOT held when callback is called */ + spin_unlock(&ch->lock); + if (likely(req->threshold)) + req->threshold(req); + return; + + } else if (req->buffer_status == + TEGRA_DMA_REQ_BUF_STATUS_HALF_FULL) { + /* Callback when the buffer is completely full (i.e on + * the second interrupt */ + int bytes_transferred; + + bytes_transferred = + (ch->csr & CSR_WCOUNT_MASK) >> CSR_WCOUNT_SHIFT; + bytes_transferred += 1; + bytes_transferred <<= 3; + + req->buffer_status = TEGRA_DMA_REQ_BUF_STATUS_FULL; + req->bytes_transferred = bytes_transferred; + req->status = TEGRA_DMA_REQ_SUCCESS; + list_del(&req->node); + + /* DMA lock is NOT held when callbak is called */ + spin_unlock(&ch->lock); + req->complete(req); + return; + + } else { + BUG(); + } + } + spin_unlock(&ch->lock); +} + +static irqreturn_t dma_isr(int irq, void *data) +{ + struct tegra_dma_channel *ch = data; + unsigned long status; + + status = readl(ch->addr + APB_DMA_CHAN_STA); + if (status & STA_ISE_EOC) + writel(status, ch->addr + APB_DMA_CHAN_STA); + else { + pr_warning("Got a spurious ISR for DMA channel %d\n", ch->id); + return IRQ_HANDLED; + } + return IRQ_WAKE_THREAD; +} + +static irqreturn_t dma_thread_fn(int irq, void *data) +{ + struct tegra_dma_channel *ch = data; + + if (ch->mode & TEGRA_DMA_MODE_ONESHOT) + handle_oneshot_dma(ch); + else + handle_continuous_dma(ch); + + + return IRQ_HANDLED; +} + +int __init tegra_dma_init(void) +{ + int ret = 0; + int i; + unsigned int irq; + void __iomem *addr; + + addr = IO_ADDRESS(TEGRA_APB_DMA_BASE); + writel(GEN_ENABLE, addr + APB_DMA_GEN); + writel(0, addr + APB_DMA_CNTRL); + writel(0xFFFFFFFFul >> (31 - TEGRA_SYSTEM_DMA_CH_MAX), + addr + APB_DMA_IRQ_MASK_SET); + + memset(channel_usage, 0, sizeof(channel_usage)); + memset(dma_channels, 0, sizeof(dma_channels)); + + /* Reserve all the channels we are not supposed to touch */ + for (i = 0; i < TEGRA_SYSTEM_DMA_CH_MIN; i++) + __set_bit(i, channel_usage); + + for (i = TEGRA_SYSTEM_DMA_CH_MIN; i <= TEGRA_SYSTEM_DMA_CH_MAX; i++) { + struct tegra_dma_channel *ch = &dma_channels[i]; + + __clear_bit(i, channel_usage); + + ch->id = i; + snprintf(ch->name, TEGRA_DMA_NAME_SIZE, "dma_channel_%d", i); + + ch->addr = IO_ADDRESS(TEGRA_APB_DMA_CH0_BASE + + TEGRA_APB_DMA_CH0_SIZE * i); + + spin_lock_init(&ch->lock); + INIT_LIST_HEAD(&ch->list); + tegra_dma_init_hw(ch); + + irq = INT_APB_DMA_CH0 + i; + ret = request_threaded_irq(irq, dma_isr, dma_thread_fn, 0, + dma_channels[i].name, ch); + if (ret) { + pr_err("Failed to register IRQ %d for DMA %d\n", + irq, i); + goto fail; + } + ch->irq = irq; + } + /* mark the shared channel allocated */ + __set_bit(TEGRA_SYSTEM_DMA_CH_MIN, channel_usage); + + for (i = TEGRA_SYSTEM_DMA_CH_MAX+1; i < NV_DMA_MAX_CHANNELS; i++) + __set_bit(i, channel_usage); + + return ret; +fail: + writel(0, addr + APB_DMA_GEN); + for (i = TEGRA_SYSTEM_DMA_CH_MIN; i <= TEGRA_SYSTEM_DMA_CH_MAX; i++) { + struct tegra_dma_channel *ch = &dma_channels[i]; + if (ch->irq) + free_irq(ch->irq, ch); + } + return ret; +} + +#ifdef CONFIG_PM +static u32 apb_dma[5*TEGRA_SYSTEM_DMA_CH_NR + 3]; + +void tegra_dma_suspend(void) +{ + void __iomem *addr = IO_ADDRESS(TEGRA_APB_DMA_BASE); + u32 *ctx = apb_dma; + int i; + + *ctx++ = readl(addr + APB_DMA_GEN); + *ctx++ = readl(addr + APB_DMA_CNTRL); + *ctx++ = readl(addr + APB_DMA_IRQ_MASK); + + for (i = 0; i < TEGRA_SYSTEM_DMA_CH_NR; i++) { + addr = IO_ADDRESS(TEGRA_APB_DMA_CH0_BASE + + TEGRA_APB_DMA_CH0_SIZE * i); + + *ctx++ = readl(addr + APB_DMA_CHAN_CSR); + *ctx++ = readl(addr + APB_DMA_CHAN_AHB_PTR); + *ctx++ = readl(addr + APB_DMA_CHAN_AHB_SEQ); + *ctx++ = readl(addr + APB_DMA_CHAN_APB_PTR); + *ctx++ = readl(addr + APB_DMA_CHAN_APB_SEQ); + } +} + +void tegra_dma_resume(void) +{ + void __iomem *addr = IO_ADDRESS(TEGRA_APB_DMA_BASE); + u32 *ctx = apb_dma; + int i; + + writel(*ctx++, addr + APB_DMA_GEN); + writel(*ctx++, addr + APB_DMA_CNTRL); + writel(*ctx++, addr + APB_DMA_IRQ_MASK); + + for (i = 0; i < TEGRA_SYSTEM_DMA_CH_NR; i++) { + addr = IO_ADDRESS(TEGRA_APB_DMA_CH0_BASE + + TEGRA_APB_DMA_CH0_SIZE * i); + + writel(*ctx++, addr + APB_DMA_CHAN_CSR); + writel(*ctx++, addr + APB_DMA_CHAN_AHB_PTR); + writel(*ctx++, addr + APB_DMA_CHAN_AHB_SEQ); + writel(*ctx++, addr + APB_DMA_CHAN_APB_PTR); + writel(*ctx++, addr + APB_DMA_CHAN_APB_SEQ); + } +} + +#endif diff --git a/arch/arm/mach-tegra/fuse.c b/arch/arm/mach-tegra/fuse.c new file mode 100644 index 00000000000..1fa26d9a1a6 --- /dev/null +++ b/arch/arm/mach-tegra/fuse.c @@ -0,0 +1,84 @@ +/* + * arch/arm/mach-tegra/fuse.c + * + * Copyright (C) 2010 Google, Inc. + * + * Author: + * Colin Cross <ccross@android.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/kernel.h> +#include <linux/io.h> + +#include <mach/iomap.h> + +#include "fuse.h" + +#define FUSE_UID_LOW 0x108 +#define FUSE_UID_HIGH 0x10c +#define FUSE_SKU_INFO 0x110 +#define FUSE_SPARE_BIT 0x200 + +static inline u32 fuse_readl(unsigned long offset) +{ + return readl(IO_TO_VIRT(TEGRA_FUSE_BASE + offset)); +} + +static inline void fuse_writel(u32 value, unsigned long offset) +{ + writel(value, IO_TO_VIRT(TEGRA_FUSE_BASE + offset)); +} + +void tegra_init_fuse(void) +{ + u32 reg = readl(IO_TO_VIRT(TEGRA_CLK_RESET_BASE + 0x48)); + reg |= 1 << 28; + writel(reg, IO_TO_VIRT(TEGRA_CLK_RESET_BASE + 0x48)); + + pr_info("Tegra SKU: %d CPU Process: %d Core Process: %d\n", + tegra_sku_id(), tegra_cpu_process_id(), + tegra_core_process_id()); +} + +unsigned long long tegra_chip_uid(void) +{ + unsigned long long lo, hi; + + lo = fuse_readl(FUSE_UID_LOW); + hi = fuse_readl(FUSE_UID_HIGH); + return (hi << 32ull) | lo; +} + +int tegra_sku_id(void) +{ + int sku_id; + u32 reg = fuse_readl(FUSE_SKU_INFO); + sku_id = reg & 0xFF; + return sku_id; +} + +int tegra_cpu_process_id(void) +{ + int cpu_process_id; + u32 reg = fuse_readl(FUSE_SPARE_BIT); + cpu_process_id = (reg >> 6) & 3; + return cpu_process_id; +} + +int tegra_core_process_id(void) +{ + int core_process_id; + u32 reg = fuse_readl(FUSE_SPARE_BIT); + core_process_id = (reg >> 12) & 3; + return core_process_id; +} diff --git a/arch/arm/mach-tegra/fuse.h b/arch/arm/mach-tegra/fuse.h new file mode 100644 index 00000000000..584b2e27dbd --- /dev/null +++ b/arch/arm/mach-tegra/fuse.h @@ -0,0 +1,24 @@ +/* + * arch/arm/mach-tegra/fuse.c + * + * Copyright (C) 2010 Google, Inc. + * + * Author: + * Colin Cross <ccross@android.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +unsigned long long tegra_chip_uid(void); +int tegra_sku_id(void); +int tegra_cpu_process_id(void); +int tegra_core_process_id(void); +void tegra_init_fuse(void); diff --git a/arch/arm/mach-tegra/gpio-names.h b/arch/arm/mach-tegra/gpio-names.h new file mode 100644 index 00000000000..f28220a641b --- /dev/null +++ b/arch/arm/mach-tegra/gpio-names.h @@ -0,0 +1,247 @@ +/* + * arch/arm/mach-tegra/include/mach/gpio-names.h + * + * Copyright (c) 2010 Google, Inc + * + * Author: + * Erik Gilling <konkers@google.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __MACH_TEGRA_GPIO_NAMES_H +#define __MACH_TEGRA_GPIO_NAMES_H + +#define TEGRA_GPIO_PA0 0 +#define TEGRA_GPIO_PA1 1 +#define TEGRA_GPIO_PA2 2 +#define TEGRA_GPIO_PA3 3 +#define TEGRA_GPIO_PA4 4 +#define TEGRA_GPIO_PA5 5 +#define TEGRA_GPIO_PA6 6 +#define TEGRA_GPIO_PA7 7 +#define TEGRA_GPIO_PB0 8 +#define TEGRA_GPIO_PB1 9 +#define TEGRA_GPIO_PB2 10 +#define TEGRA_GPIO_PB3 11 +#define TEGRA_GPIO_PB4 12 +#define TEGRA_GPIO_PB5 13 +#define TEGRA_GPIO_PB6 14 +#define TEGRA_GPIO_PB7 15 +#define TEGRA_GPIO_PC0 16 +#define TEGRA_GPIO_PC1 17 +#define TEGRA_GPIO_PC2 18 +#define TEGRA_GPIO_PC3 19 +#define TEGRA_GPIO_PC4 20 +#define TEGRA_GPIO_PC5 21 +#define TEGRA_GPIO_PC6 22 +#define TEGRA_GPIO_PC7 23 +#define TEGRA_GPIO_PD0 24 +#define TEGRA_GPIO_PD1 25 +#define TEGRA_GPIO_PD2 26 +#define TEGRA_GPIO_PD3 27 +#define TEGRA_GPIO_PD4 28 +#define TEGRA_GPIO_PD5 29 +#define TEGRA_GPIO_PD6 30 +#define TEGRA_GPIO_PD7 31 +#define TEGRA_GPIO_PE0 32 +#define TEGRA_GPIO_PE1 33 +#define TEGRA_GPIO_PE2 34 +#define TEGRA_GPIO_PE3 35 +#define TEGRA_GPIO_PE4 36 +#define TEGRA_GPIO_PE5 37 +#define TEGRA_GPIO_PE6 38 +#define TEGRA_GPIO_PE7 39 +#define TEGRA_GPIO_PF0 40 +#define TEGRA_GPIO_PF1 41 +#define TEGRA_GPIO_PF2 42 +#define TEGRA_GPIO_PF3 43 +#define TEGRA_GPIO_PF4 44 +#define TEGRA_GPIO_PF5 45 +#define TEGRA_GPIO_PF6 46 +#define TEGRA_GPIO_PF7 47 +#define TEGRA_GPIO_PG0 48 +#define TEGRA_GPIO_PG1 49 +#define TEGRA_GPIO_PG2 50 +#define TEGRA_GPIO_PG3 51 +#define TEGRA_GPIO_PG4 52 +#define TEGRA_GPIO_PG5 53 +#define TEGRA_GPIO_PG6 54 +#define TEGRA_GPIO_PG7 55 +#define TEGRA_GPIO_PH0 56 +#define TEGRA_GPIO_PH1 57 +#define TEGRA_GPIO_PH2 58 +#define TEGRA_GPIO_PH3 59 +#define TEGRA_GPIO_PH4 60 +#define TEGRA_GPIO_PH5 61 +#define TEGRA_GPIO_PH6 62 +#define TEGRA_GPIO_PH7 63 +#define TEGRA_GPIO_PI0 64 +#define TEGRA_GPIO_PI1 65 +#define TEGRA_GPIO_PI2 66 +#define TEGRA_GPIO_PI3 67 +#define TEGRA_GPIO_PI4 68 +#define TEGRA_GPIO_PI5 69 +#define TEGRA_GPIO_PI6 70 +#define TEGRA_GPIO_PI7 71 +#define TEGRA_GPIO_PJ0 72 +#define TEGRA_GPIO_PJ1 73 +#define TEGRA_GPIO_PJ2 74 +#define TEGRA_GPIO_PJ3 75 +#define TEGRA_GPIO_PJ4 76 +#define TEGRA_GPIO_PJ5 77 +#define TEGRA_GPIO_PJ6 78 +#define TEGRA_GPIO_PJ7 79 +#define TEGRA_GPIO_PK0 80 +#define TEGRA_GPIO_PK1 81 +#define TEGRA_GPIO_PK2 82 +#define TEGRA_GPIO_PK3 83 +#define TEGRA_GPIO_PK4 84 +#define TEGRA_GPIO_PK5 85 +#define TEGRA_GPIO_PK6 86 +#define TEGRA_GPIO_PK7 87 +#define TEGRA_GPIO_PL0 88 +#define TEGRA_GPIO_PL1 89 +#define TEGRA_GPIO_PL2 90 +#define TEGRA_GPIO_PL3 91 +#define TEGRA_GPIO_PL4 92 +#define TEGRA_GPIO_PL5 93 +#define TEGRA_GPIO_PL6 94 +#define TEGRA_GPIO_PL7 95 +#define TEGRA_GPIO_PM0 96 +#define TEGRA_GPIO_PM1 97 +#define TEGRA_GPIO_PM2 98 +#define TEGRA_GPIO_PM3 99 +#define TEGRA_GPIO_PM4 100 +#define TEGRA_GPIO_PM5 101 +#define TEGRA_GPIO_PM6 102 +#define TEGRA_GPIO_PM7 103 +#define TEGRA_GPIO_PN0 104 +#define TEGRA_GPIO_PN1 105 +#define TEGRA_GPIO_PN2 106 +#define TEGRA_GPIO_PN3 107 +#define TEGRA_GPIO_PN4 108 +#define TEGRA_GPIO_PN5 109 +#define TEGRA_GPIO_PN6 110 +#define TEGRA_GPIO_PN7 111 +#define TEGRA_GPIO_PO0 112 +#define TEGRA_GPIO_PO1 113 +#define TEGRA_GPIO_PO2 114 +#define TEGRA_GPIO_PO3 115 +#define TEGRA_GPIO_PO4 116 +#define TEGRA_GPIO_PO5 117 +#define TEGRA_GPIO_PO6 118 +#define TEGRA_GPIO_PO7 119 +#define TEGRA_GPIO_PP0 120 +#define TEGRA_GPIO_PP1 121 +#define TEGRA_GPIO_PP2 122 +#define TEGRA_GPIO_PP3 123 +#define TEGRA_GPIO_PP4 124 +#define TEGRA_GPIO_PP5 125 +#define TEGRA_GPIO_PP6 126 +#define TEGRA_GPIO_PP7 127 +#define TEGRA_GPIO_PQ0 128 +#define TEGRA_GPIO_PQ1 129 +#define TEGRA_GPIO_PQ2 130 +#define TEGRA_GPIO_PQ3 131 +#define TEGRA_GPIO_PQ4 132 +#define TEGRA_GPIO_PQ5 133 +#define TEGRA_GPIO_PQ6 134 +#define TEGRA_GPIO_PQ7 135 +#define TEGRA_GPIO_PR0 136 +#define TEGRA_GPIO_PR1 137 +#define TEGRA_GPIO_PR2 138 +#define TEGRA_GPIO_PR3 139 +#define TEGRA_GPIO_PR4 140 +#define TEGRA_GPIO_PR5 141 +#define TEGRA_GPIO_PR6 142 +#define TEGRA_GPIO_PR7 143 +#define TEGRA_GPIO_PS0 144 +#define TEGRA_GPIO_PS1 145 +#define TEGRA_GPIO_PS2 146 +#define TEGRA_GPIO_PS3 147 +#define TEGRA_GPIO_PS4 148 +#define TEGRA_GPIO_PS5 149 +#define TEGRA_GPIO_PS6 150 +#define TEGRA_GPIO_PS7 151 +#define TEGRA_GPIO_PT0 152 +#define TEGRA_GPIO_PT1 153 +#define TEGRA_GPIO_PT2 154 +#define TEGRA_GPIO_PT3 155 +#define TEGRA_GPIO_PT4 156 +#define TEGRA_GPIO_PT5 157 +#define TEGRA_GPIO_PT6 158 +#define TEGRA_GPIO_PT7 159 +#define TEGRA_GPIO_PU0 160 +#define TEGRA_GPIO_PU1 161 +#define TEGRA_GPIO_PU2 162 +#define TEGRA_GPIO_PU3 163 +#define TEGRA_GPIO_PU4 164 +#define TEGRA_GPIO_PU5 165 +#define TEGRA_GPIO_PU6 166 +#define TEGRA_GPIO_PU7 167 +#define TEGRA_GPIO_PV0 168 +#define TEGRA_GPIO_PV1 169 +#define TEGRA_GPIO_PV2 170 +#define TEGRA_GPIO_PV3 171 +#define TEGRA_GPIO_PV4 172 +#define TEGRA_GPIO_PV5 173 +#define TEGRA_GPIO_PV6 174 +#define TEGRA_GPIO_PV7 175 +#define TEGRA_GPIO_PW0 176 +#define TEGRA_GPIO_PW1 177 +#define TEGRA_GPIO_PW2 178 +#define TEGRA_GPIO_PW3 179 +#define TEGRA_GPIO_PW4 180 +#define TEGRA_GPIO_PW5 181 +#define TEGRA_GPIO_PW6 182 +#define TEGRA_GPIO_PW7 183 +#define TEGRA_GPIO_PX0 184 +#define TEGRA_GPIO_PX1 185 +#define TEGRA_GPIO_PX2 186 +#define TEGRA_GPIO_PX3 187 +#define TEGRA_GPIO_PX4 188 +#define TEGRA_GPIO_PX5 189 +#define TEGRA_GPIO_PX6 190 +#define TEGRA_GPIO_PX7 191 +#define TEGRA_GPIO_PY0 192 +#define TEGRA_GPIO_PY1 193 +#define TEGRA_GPIO_PY2 194 +#define TEGRA_GPIO_PY3 195 +#define TEGRA_GPIO_PY4 196 +#define TEGRA_GPIO_PY5 197 +#define TEGRA_GPIO_PY6 198 +#define TEGRA_GPIO_PY7 199 +#define TEGRA_GPIO_PZ0 200 +#define TEGRA_GPIO_PZ1 201 +#define TEGRA_GPIO_PZ2 202 +#define TEGRA_GPIO_PZ3 203 +#define TEGRA_GPIO_PZ4 204 +#define TEGRA_GPIO_PZ5 205 +#define TEGRA_GPIO_PZ6 206 +#define TEGRA_GPIO_PZ7 207 +#define TEGRA_GPIO_PAA0 208 +#define TEGRA_GPIO_PAA1 209 +#define TEGRA_GPIO_PAA2 210 +#define TEGRA_GPIO_PAA3 211 +#define TEGRA_GPIO_PAA4 212 +#define TEGRA_GPIO_PAA5 213 +#define TEGRA_GPIO_PAA6 214 +#define TEGRA_GPIO_PAA7 215 +#define TEGRA_GPIO_PBB0 216 +#define TEGRA_GPIO_PBB1 217 +#define TEGRA_GPIO_PBB2 218 +#define TEGRA_GPIO_PBB3 219 +#define TEGRA_GPIO_PBB4 220 +#define TEGRA_GPIO_PBB5 221 +#define TEGRA_GPIO_PBB6 222 +#define TEGRA_GPIO_PBB7 223 + +#endif diff --git a/arch/arm/mach-tegra/gpio.c b/arch/arm/mach-tegra/gpio.c new file mode 100644 index 00000000000..0775265e69f --- /dev/null +++ b/arch/arm/mach-tegra/gpio.c @@ -0,0 +1,430 @@ +/* + * arch/arm/mach-tegra/gpio.c + * + * Copyright (c) 2010 Google, Inc + * + * Author: + * Erik Gilling <konkers@google.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/init.h> +#include <linux/irq.h> +#include <linux/interrupt.h> + +#include <linux/io.h> +#include <linux/gpio.h> + +#include <mach/iomap.h> + +#define GPIO_BANK(x) ((x) >> 5) +#define GPIO_PORT(x) (((x) >> 3) & 0x3) +#define GPIO_BIT(x) ((x) & 0x7) + +#define GPIO_REG(x) (IO_TO_VIRT(TEGRA_GPIO_BASE) + \ + GPIO_BANK(x) * 0x80 + \ + GPIO_PORT(x) * 4) + +#define GPIO_CNF(x) (GPIO_REG(x) + 0x00) +#define GPIO_OE(x) (GPIO_REG(x) + 0x10) +#define GPIO_OUT(x) (GPIO_REG(x) + 0X20) +#define GPIO_IN(x) (GPIO_REG(x) + 0x30) +#define GPIO_INT_STA(x) (GPIO_REG(x) + 0x40) +#define GPIO_INT_ENB(x) (GPIO_REG(x) + 0x50) +#define GPIO_INT_LVL(x) (GPIO_REG(x) + 0x60) +#define GPIO_INT_CLR(x) (GPIO_REG(x) + 0x70) + +#define GPIO_MSK_CNF(x) (GPIO_REG(x) + 0x800) +#define GPIO_MSK_OE(x) (GPIO_REG(x) + 0x810) +#define GPIO_MSK_OUT(x) (GPIO_REG(x) + 0X820) +#define GPIO_MSK_INT_STA(x) (GPIO_REG(x) + 0x840) +#define GPIO_MSK_INT_ENB(x) (GPIO_REG(x) + 0x850) +#define GPIO_MSK_INT_LVL(x) (GPIO_REG(x) + 0x860) + +#define GPIO_INT_LVL_MASK 0x010101 +#define GPIO_INT_LVL_EDGE_RISING 0x000101 +#define GPIO_INT_LVL_EDGE_FALLING 0x000100 +#define GPIO_INT_LVL_EDGE_BOTH 0x010100 +#define GPIO_INT_LVL_LEVEL_HIGH 0x000001 +#define GPIO_INT_LVL_LEVEL_LOW 0x000000 + +struct tegra_gpio_bank { + int bank; + int irq; + spinlock_t lvl_lock[4]; +#ifdef CONFIG_PM + u32 cnf[4]; + u32 out[4]; + u32 oe[4]; + u32 int_enb[4]; + u32 int_lvl[4]; +#endif +}; + + +static struct tegra_gpio_bank tegra_gpio_banks[] = { + {.bank = 0, .irq = INT_GPIO1}, + {.bank = 1, .irq = INT_GPIO2}, + {.bank = 2, .irq = INT_GPIO3}, + {.bank = 3, .irq = INT_GPIO4}, + {.bank = 4, .irq = INT_GPIO5}, + {.bank = 5, .irq = INT_GPIO6}, + {.bank = 6, .irq = INT_GPIO7}, +}; + +static int tegra_gpio_compose(int bank, int port, int bit) +{ + return (bank << 5) | ((port & 0x3) << 3) | (bit & 0x7); +} + +static void tegra_gpio_mask_write(u32 reg, int gpio, int value) +{ + u32 val; + + val = 0x100 << GPIO_BIT(gpio); + if (value) + val |= 1 << GPIO_BIT(gpio); + __raw_writel(val, reg); +} + +void tegra_gpio_enable(int gpio) +{ + tegra_gpio_mask_write(GPIO_MSK_CNF(gpio), gpio, 1); +} + +void tegra_gpio_disable(int gpio) +{ + tegra_gpio_mask_write(GPIO_MSK_CNF(gpio), gpio, 0); +} + +static void tegra_gpio_set(struct gpio_chip *chip, unsigned offset, int value) +{ + tegra_gpio_mask_write(GPIO_MSK_OUT(offset), offset, value); +} + +static int tegra_gpio_get(struct gpio_chip *chip, unsigned offset) +{ + return (__raw_readl(GPIO_IN(offset)) >> GPIO_BIT(offset)) & 0x1; +} + +static int tegra_gpio_direction_input(struct gpio_chip *chip, unsigned offset) +{ + tegra_gpio_mask_write(GPIO_MSK_OE(offset), offset, 0); + return 0; +} + +static int tegra_gpio_direction_output(struct gpio_chip *chip, unsigned offset, + int value) +{ + tegra_gpio_set(chip, offset, value); + tegra_gpio_mask_write(GPIO_MSK_OE(offset), offset, 1); + return 0; +} + + + +static struct gpio_chip tegra_gpio_chip = { + .label = "tegra-gpio", + .direction_input = tegra_gpio_direction_input, + .get = tegra_gpio_get, + .direction_output = tegra_gpio_direction_output, + .set = tegra_gpio_set, + .base = 0, + .ngpio = TEGRA_NR_GPIOS, +}; + +static void tegra_gpio_irq_ack(unsigned int irq) +{ + int gpio = irq - INT_GPIO_BASE; + + __raw_writel(1 << GPIO_BIT(gpio), GPIO_INT_CLR(gpio)); +} + +static void tegra_gpio_irq_mask(unsigned int irq) +{ + int gpio = irq - INT_GPIO_BASE; + + tegra_gpio_mask_write(GPIO_MSK_INT_ENB(gpio), gpio, 0); +} + +static void tegra_gpio_irq_unmask(unsigned int irq) +{ + int gpio = irq - INT_GPIO_BASE; + + tegra_gpio_mask_write(GPIO_MSK_INT_ENB(gpio), gpio, 1); +} + +static int tegra_gpio_irq_set_type(unsigned int irq, unsigned int type) +{ + int gpio = irq - INT_GPIO_BASE; + struct tegra_gpio_bank *bank = get_irq_chip_data(irq); + int port = GPIO_PORT(gpio); + int lvl_type; + int val; + unsigned long flags; + + switch (type & IRQ_TYPE_SENSE_MASK) { + case IRQ_TYPE_EDGE_RISING: + lvl_type = GPIO_INT_LVL_EDGE_RISING; + break; + + case IRQ_TYPE_EDGE_FALLING: + lvl_type = GPIO_INT_LVL_EDGE_FALLING; + break; + + case IRQ_TYPE_EDGE_BOTH: + lvl_type = GPIO_INT_LVL_EDGE_BOTH; + break; + + case IRQ_TYPE_LEVEL_HIGH: + lvl_type = GPIO_INT_LVL_LEVEL_HIGH; + break; + + case IRQ_TYPE_LEVEL_LOW: + lvl_type = GPIO_INT_LVL_LEVEL_LOW; + break; + + default: + return -EINVAL; + } + + spin_lock_irqsave(&bank->lvl_lock[port], flags); + + val = __raw_readl(GPIO_INT_LVL(gpio)); + val &= ~(GPIO_INT_LVL_MASK << GPIO_BIT(gpio)); + val |= lvl_type << GPIO_BIT(gpio); + __raw_writel(val, GPIO_INT_LVL(gpio)); + + spin_unlock_irqrestore(&bank->lvl_lock[port], flags); + + if (type & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH)) + __set_irq_handler_unlocked(irq, handle_level_irq); + else if (type & (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING)) + __set_irq_handler_unlocked(irq, handle_edge_irq); + + return 0; +} + +static void tegra_gpio_irq_handler(unsigned int irq, struct irq_desc *desc) +{ + struct tegra_gpio_bank *bank; + int port; + int pin; + int unmasked = 0; + + desc->chip->ack(irq); + + bank = get_irq_data(irq); + + for (port = 0; port < 4; port++) { + int gpio = tegra_gpio_compose(bank->bank, port, 0); + unsigned long sta = __raw_readl(GPIO_INT_STA(gpio)) & + __raw_readl(GPIO_INT_ENB(gpio)); + u32 lvl = __raw_readl(GPIO_INT_LVL(gpio)); + + for_each_set_bit(pin, &sta, 8) { + __raw_writel(1 << pin, GPIO_INT_CLR(gpio)); + + /* if gpio is edge triggered, clear condition + * before executing the hander so that we don't + * miss edges + */ + if (lvl & (0x100 << pin)) { + unmasked = 1; + desc->chip->unmask(irq); + } + + generic_handle_irq(gpio_to_irq(gpio + pin)); + } + } + + if (!unmasked) + desc->chip->unmask(irq); + +} + +#ifdef CONFIG_PM +void tegra_gpio_resume(void) +{ + unsigned long flags; + int b, p, i; + + local_irq_save(flags); + + for (b = 0; b < ARRAY_SIZE(tegra_gpio_banks); b++) { + struct tegra_gpio_bank *bank = &tegra_gpio_banks[b]; + + for (p = 0; p < ARRAY_SIZE(bank->oe); p++) { + unsigned int gpio = (b<<5) | (p<<3); + __raw_writel(bank->cnf[p], GPIO_CNF(gpio)); + __raw_writel(bank->out[p], GPIO_OUT(gpio)); + __raw_writel(bank->oe[p], GPIO_OE(gpio)); + __raw_writel(bank->int_lvl[p], GPIO_INT_LVL(gpio)); + __raw_writel(bank->int_enb[p], GPIO_INT_ENB(gpio)); + } + } + + local_irq_restore(flags); + + for (i = INT_GPIO_BASE; i < (INT_GPIO_BASE + TEGRA_NR_GPIOS); i++) { + struct irq_desc *desc = irq_to_desc(i); + if (!desc || (desc->status & IRQ_WAKEUP)) + continue; + enable_irq(i); + } +} + +void tegra_gpio_suspend(void) +{ + unsigned long flags; + int b, p, i; + + for (i = INT_GPIO_BASE; i < (INT_GPIO_BASE + TEGRA_NR_GPIOS); i++) { + struct irq_desc *desc = irq_to_desc(i); + if (!desc) + continue; + if (desc->status & IRQ_WAKEUP) { + int gpio = i - INT_GPIO_BASE; + pr_debug("gpio %d.%d is wakeup\n", gpio/8, gpio&7); + continue; + } + disable_irq(i); + } + + local_irq_save(flags); + for (b = 0; b < ARRAY_SIZE(tegra_gpio_banks); b++) { + struct tegra_gpio_bank *bank = &tegra_gpio_banks[b]; + + for (p = 0; p < ARRAY_SIZE(bank->oe); p++) { + unsigned int gpio = (b<<5) | (p<<3); + bank->cnf[p] = __raw_readl(GPIO_CNF(gpio)); + bank->out[p] = __raw_readl(GPIO_OUT(gpio)); + bank->oe[p] = __raw_readl(GPIO_OE(gpio)); + bank->int_enb[p] = __raw_readl(GPIO_INT_ENB(gpio)); + bank->int_lvl[p] = __raw_readl(GPIO_INT_LVL(gpio)); + } + } + local_irq_restore(flags); +} + +static int tegra_gpio_wake_enable(unsigned int irq, unsigned int enable) +{ + struct tegra_gpio_bank *bank = get_irq_chip_data(irq); + return set_irq_wake(bank->irq, enable); +} +#endif + +static struct irq_chip tegra_gpio_irq_chip = { + .name = "GPIO", + .ack = tegra_gpio_irq_ack, + .mask = tegra_gpio_irq_mask, + .unmask = tegra_gpio_irq_unmask, + .set_type = tegra_gpio_irq_set_type, +#ifdef CONFIG_PM + .set_wake = tegra_gpio_wake_enable, +#endif +}; + + +/* This lock class tells lockdep that GPIO irqs are in a different + * category than their parents, so it won't report false recursion. + */ +static struct lock_class_key gpio_lock_class; + +static int __init tegra_gpio_init(void) +{ + struct tegra_gpio_bank *bank; + int i; + int j; + + for (i = 0; i < 7; i++) { + for (j = 0; j < 4; j++) { + int gpio = tegra_gpio_compose(i, j, 0); + __raw_writel(0x00, GPIO_INT_ENB(gpio)); + } + } + + gpiochip_add(&tegra_gpio_chip); + + for (i = INT_GPIO_BASE; i < (INT_GPIO_BASE + TEGRA_NR_GPIOS); i++) { + bank = &tegra_gpio_banks[GPIO_BANK(irq_to_gpio(i))]; + + lockdep_set_class(&irq_desc[i].lock, &gpio_lock_class); + set_irq_chip_data(i, bank); + set_irq_chip(i, &tegra_gpio_irq_chip); + set_irq_handler(i, handle_simple_irq); + set_irq_flags(i, IRQF_VALID); + } + + for (i = 0; i < ARRAY_SIZE(tegra_gpio_banks); i++) { + bank = &tegra_gpio_banks[i]; + + set_irq_chained_handler(bank->irq, tegra_gpio_irq_handler); + set_irq_data(bank->irq, bank); + + for (j = 0; j < 4; j++) + spin_lock_init(&bank->lvl_lock[j]); + } + + return 0; +} + +postcore_initcall(tegra_gpio_init); + +#ifdef CONFIG_DEBUG_FS + +#include <linux/debugfs.h> +#include <linux/seq_file.h> + +static int dbg_gpio_show(struct seq_file *s, void *unused) +{ + int i; + int j; + + for (i = 0; i < 7; i++) { + for (j = 0; j < 4; j++) { + int gpio = tegra_gpio_compose(i, j, 0); + seq_printf(s, + "%d:%d %02x %02x %02x %02x %02x %02x %06x\n", + i, j, + __raw_readl(GPIO_CNF(gpio)), + __raw_readl(GPIO_OE(gpio)), + __raw_readl(GPIO_OUT(gpio)), + __raw_readl(GPIO_IN(gpio)), + __raw_readl(GPIO_INT_STA(gpio)), + __raw_readl(GPIO_INT_ENB(gpio)), + __raw_readl(GPIO_INT_LVL(gpio))); + } + } + return 0; +} + +static int dbg_gpio_open(struct inode *inode, struct file *file) +{ + return single_open(file, dbg_gpio_show, &inode->i_private); +} + +static const struct file_operations debug_fops = { + .open = dbg_gpio_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int __init tegra_gpio_debuginit(void) +{ + (void) debugfs_create_file("tegra_gpio", S_IRUGO, + NULL, NULL, &debug_fops); + return 0; +} +late_initcall(tegra_gpio_debuginit); +#endif diff --git a/arch/arm/mach-tegra/headsmp.S b/arch/arm/mach-tegra/headsmp.S new file mode 100644 index 00000000000..b5349b2f13d --- /dev/null +++ b/arch/arm/mach-tegra/headsmp.S @@ -0,0 +1,61 @@ +#include <linux/linkage.h> +#include <linux/init.h> + + .section ".text.head", "ax" + __CPUINIT + +/* + * Tegra specific entry point for secondary CPUs. + * The secondary kernel init calls v7_flush_dcache_all before it enables + * the L1; however, the L1 comes out of reset in an undefined state, so + * the clean + invalidate performed by v7_flush_dcache_all causes a bunch + * of cache lines with uninitialized data and uninitialized tags to get + * written out to memory, which does really unpleasant things to the main + * processor. We fix this by performing an invalidate, rather than a + * clean + invalidate, before jumping into the kernel. + */ +ENTRY(v7_invalidate_l1) + mov r0, #0 + mcr p15, 2, r0, c0, c0, 0 + mrc p15, 1, r0, c0, c0, 0 + + ldr r1, =0x7fff + and r2, r1, r0, lsr #13 + + ldr r1, =0x3ff + + and r3, r1, r0, lsr #3 @ NumWays - 1 + add r2, r2, #1 @ NumSets + + and r0, r0, #0x7 + add r0, r0, #4 @ SetShift + + clz r1, r3 @ WayShift + add r4, r3, #1 @ NumWays +1: sub r2, r2, #1 @ NumSets-- + mov r3, r4 @ Temp = NumWays +2: subs r3, r3, #1 @ Temp-- + mov r5, r3, lsl r1 + mov r6, r2, lsl r0 + orr r5, r5, r6 @ Reg = (Temp<<WayShift)|(NumSets<<SetShift) + mcr p15, 0, r5, c7, c6, 2 + bgt 2b + cmp r2, #0 + bgt 1b + dsb + isb + mov pc, lr +ENDPROC(v7_invalidate_l1) + +ENTRY(tegra_secondary_startup) + msr cpsr_fsxc, #0xd3 + bl v7_invalidate_l1 + mrc p15, 0, r0, c0, c0, 5 + and r0, r0, #15 + ldr r1, =0x6000f100 + str r0, [r1] +1: ldr r2, [r1] + cmp r0, r2 + beq 1b + b secondary_startup +ENDPROC(tegra_secondary_startup) diff --git a/arch/arm/mach-tegra/hotplug.c b/arch/arm/mach-tegra/hotplug.c new file mode 100644 index 00000000000..8e7f115aa21 --- /dev/null +++ b/arch/arm/mach-tegra/hotplug.c @@ -0,0 +1,140 @@ +/* + * linux/arch/arm/mach-realview/hotplug.c + * + * Copyright (C) 2002 ARM Ltd. + * All Rights Reserved + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/smp.h> +#include <linux/completion.h> + +#include <asm/cacheflush.h> + +static DECLARE_COMPLETION(cpu_killed); + +static inline void cpu_enter_lowpower(void) +{ + unsigned int v; + + flush_cache_all(); + asm volatile( + " mcr p15, 0, %1, c7, c5, 0\n" + " mcr p15, 0, %1, c7, c10, 4\n" + /* + * Turn off coherency + */ + " mrc p15, 0, %0, c1, c0, 1\n" + " bic %0, %0, #0x20\n" + " mcr p15, 0, %0, c1, c0, 1\n" + " mrc p15, 0, %0, c1, c0, 0\n" + " bic %0, %0, #0x04\n" + " mcr p15, 0, %0, c1, c0, 0\n" + : "=&r" (v) + : "r" (0) + : "cc"); +} + +static inline void cpu_leave_lowpower(void) +{ + unsigned int v; + + asm volatile( + "mrc p15, 0, %0, c1, c0, 0\n" + " orr %0, %0, #0x04\n" + " mcr p15, 0, %0, c1, c0, 0\n" + " mrc p15, 0, %0, c1, c0, 1\n" + " orr %0, %0, #0x20\n" + " mcr p15, 0, %0, c1, c0, 1\n" + : "=&r" (v) + : + : "cc"); +} + +static inline void platform_do_lowpower(unsigned int cpu) +{ + /* + * there is no power-control hardware on this platform, so all + * we can do is put the core into WFI; this is safe as the calling + * code will have already disabled interrupts + */ + for (;;) { + /* + * here's the WFI + */ + asm(".word 0xe320f003\n" + : + : + : "memory", "cc"); + + /*if (pen_release == cpu) {*/ + /* + * OK, proper wakeup, we're done + */ + break; + /*}*/ + + /* + * getting here, means that we have come out of WFI without + * having been woken up - this shouldn't happen + * + * The trouble is, letting people know about this is not really + * possible, since we are currently running incoherently, and + * therefore cannot safely call printk() or anything else + */ +#ifdef DEBUG + printk(KERN_WARN "CPU%u: spurious wakeup call\n", cpu); +#endif + } +} + +int platform_cpu_kill(unsigned int cpu) +{ + return wait_for_completion_timeout(&cpu_killed, 5000); +} + +/* + * platform-specific code to shutdown a CPU + * + * Called with IRQs disabled + */ +void platform_cpu_die(unsigned int cpu) +{ +#ifdef DEBUG + unsigned int this_cpu = hard_smp_processor_id(); + + if (cpu != this_cpu) { + printk(KERN_CRIT "Eek! platform_cpu_die running on %u, should be %u\n", + this_cpu, cpu); + BUG(); + } +#endif + + printk(KERN_NOTICE "CPU%u: shutdown\n", cpu); + complete(&cpu_killed); + + /* + * we're ready for shutdown now, so do it + */ + cpu_enter_lowpower(); + platform_do_lowpower(cpu); + + /* + * bring this CPU back into the world of cache + * coherency, and then restore interrupts + */ + cpu_leave_lowpower(); +} + +int platform_cpu_disable(unsigned int cpu) +{ + /* + * we don't allow CPU 0 to be shutdown (it is still too special + * e.g. clock tick interrupts) + */ + return cpu == 0 ? -EPERM : 0; +} diff --git a/arch/arm/mach-tegra/include/mach/barriers.h b/arch/arm/mach-tegra/include/mach/barriers.h new file mode 100644 index 00000000000..cc115174899 --- /dev/null +++ b/arch/arm/mach-tegra/include/mach/barriers.h @@ -0,0 +1,30 @@ +/* + * arch/arm/mach-realview/include/mach/barriers.h + * + * Copyright (C) 2010 ARM Ltd. + * Written by Catalin Marinas <catalin.marinas@arm.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef __MACH_BARRIERS_H +#define __MACH_BARRIERS_H + +#include <asm/outercache.h> + +#define rmb() dmb() +#define wmb() do { dsb(); outer_sync(); } while (0) +#define mb() wmb() + +#endif /* __MACH_BARRIERS_H */ diff --git a/arch/arm/mach-tegra/include/mach/clk.h b/arch/arm/mach-tegra/include/mach/clk.h new file mode 100644 index 00000000000..d7723955dac --- /dev/null +++ b/arch/arm/mach-tegra/include/mach/clk.h @@ -0,0 +1,31 @@ +/* + * arch/arm/mach-tegra/include/mach/clk.h + * + * Copyright (C) 2010 Google, Inc. + * + * Author: + * Erik Gilling <konkers@google.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __MACH_CLK_H +#define __MACH_CLK_H + +void tegra_periph_reset_deassert(struct clk *c); +void tegra_periph_reset_assert(struct clk *c); + +int clk_enable_cansleep(struct clk *clk); +void clk_disable_cansleep(struct clk *clk); +int clk_set_rate_cansleep(struct clk *clk, unsigned long rate); +int clk_set_parent_cansleep(struct clk *clk, struct clk *parent); + +#endif diff --git a/arch/arm/mach-tegra/include/mach/clkdev.h b/arch/arm/mach-tegra/include/mach/clkdev.h new file mode 100644 index 00000000000..412f5c63e65 --- /dev/null +++ b/arch/arm/mach-tegra/include/mach/clkdev.h @@ -0,0 +1,32 @@ +/* + * arch/arm/mach-tegra/include/mach/clkdev.h + * + * Copyright (C) 2010 Google, Inc. + * + * Author: + * Colin Cross <ccross@google.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __MACH_CLKDEV_H +#define __MACH_CLKDEV_H + +static inline int __clk_get(struct clk *clk) +{ + return 1; +} + +static inline void __clk_put(struct clk *clk) +{ +} + +#endif diff --git a/arch/arm/mach-tegra/include/mach/debug-macro.S b/arch/arm/mach-tegra/include/mach/debug-macro.S new file mode 100644 index 00000000000..8ea3bffb4e0 --- /dev/null +++ b/arch/arm/mach-tegra/include/mach/debug-macro.S @@ -0,0 +1,50 @@ +/* + * arch/arm/mach-tegra/include/mach/debug-macro.S + * + * Copyright (C) 2010 Google, Inc. + * + * Author: + * Colin Cross <ccross@google.com> + * Erik Gilling <konkers@google.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <mach/io.h> + + .macro addruart, rp, rv + ldreq \rp, =IO_APB_PHYS @ physical + ldrne \rv, =IO_APB_VIRT @ virtual +#if defined(CONFIG_TEGRA_DEBUG_UART_NONE) +#error "A debug UART must be selected in the kernel config to use DEBUG_LL" +#elif defined(CONFIG_TEGRA_DEBUG_UARTA) + orr \rp, \rp, #0x6000 + orr \rv, \rv, #0x6000 +#elif defined(CONFIG_TEGRA_DEBUG_UARTB) + orr \rp, \rp, #0x6000 + orr \rp, \rp, #0x40 + orr \rv, \rv, #0x6000 + orr \rv, \rv, #0x40 +#elif defined(CONFIG_TEGRA_DEBUG_UARTC) + orr \rp, \rp, #0x6200 + orr \rv, \rv, #0x6200 +#elif defined(CONFIG_TEGRA_DEBUG_UARTD) + orr \rp, \rp, #0x6300 + orr \rv, \rv, #0x6300 +#elif defined(CONFIG_TEGRA_DEBUG_UARTE) + orr \rp, \rp, #0x6400 + orr \rv, \rv, #0x6400 +#endif + .endm + +#define UART_SHIFT 2 +#include <asm/hardware/debug-8250.S> + diff --git a/arch/arm/mach-tegra/include/mach/dma.h b/arch/arm/mach-tegra/include/mach/dma.h new file mode 100644 index 00000000000..39011bd9a92 --- /dev/null +++ b/arch/arm/mach-tegra/include/mach/dma.h @@ -0,0 +1,155 @@ +/* + * arch/arm/mach-tegra/include/mach/dma.h + * + * Copyright (c) 2008-2009, NVIDIA Corporation. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#ifndef __MACH_TEGRA_DMA_H +#define __MACH_TEGRA_DMA_H + +#include <linux/list.h> + +#if defined(CONFIG_TEGRA_SYSTEM_DMA) + +struct tegra_dma_req; +struct tegra_dma_channel; + +#define TEGRA_DMA_REQ_SEL_CNTR 0 +#define TEGRA_DMA_REQ_SEL_I2S_2 1 +#define TEGRA_DMA_REQ_SEL_I2S_1 2 +#define TEGRA_DMA_REQ_SEL_SPD_I 3 +#define TEGRA_DMA_REQ_SEL_UI_I 4 +#define TEGRA_DMA_REQ_SEL_MIPI 5 +#define TEGRA_DMA_REQ_SEL_I2S2_2 6 +#define TEGRA_DMA_REQ_SEL_I2S2_1 7 +#define TEGRA_DMA_REQ_SEL_UARTA 8 +#define TEGRA_DMA_REQ_SEL_UARTB 9 +#define TEGRA_DMA_REQ_SEL_UARTC 10 +#define TEGRA_DMA_REQ_SEL_SPI 11 +#define TEGRA_DMA_REQ_SEL_AC97 12 +#define TEGRA_DMA_REQ_SEL_ACMODEM 13 +#define TEGRA_DMA_REQ_SEL_SL4B 14 +#define TEGRA_DMA_REQ_SEL_SL2B1 15 +#define TEGRA_DMA_REQ_SEL_SL2B2 16 +#define TEGRA_DMA_REQ_SEL_SL2B3 17 +#define TEGRA_DMA_REQ_SEL_SL2B4 18 +#define TEGRA_DMA_REQ_SEL_UARTD 19 +#define TEGRA_DMA_REQ_SEL_UARTE 20 +#define TEGRA_DMA_REQ_SEL_I2C 21 +#define TEGRA_DMA_REQ_SEL_I2C2 22 +#define TEGRA_DMA_REQ_SEL_I2C3 23 +#define TEGRA_DMA_REQ_SEL_DVC_I2C 24 +#define TEGRA_DMA_REQ_SEL_OWR 25 +#define TEGRA_DMA_REQ_SEL_INVALID 31 + +enum tegra_dma_mode { + TEGRA_DMA_SHARED = 1, + TEGRA_DMA_MODE_CONTINOUS = 2, + TEGRA_DMA_MODE_ONESHOT = 4, +}; + +enum tegra_dma_req_error { + TEGRA_DMA_REQ_SUCCESS = 0, + TEGRA_DMA_REQ_ERROR_ABORTED, + TEGRA_DMA_REQ_INFLIGHT, +}; + +enum tegra_dma_req_buff_status { + TEGRA_DMA_REQ_BUF_STATUS_EMPTY = 0, + TEGRA_DMA_REQ_BUF_STATUS_HALF_FULL, + TEGRA_DMA_REQ_BUF_STATUS_FULL, +}; + +struct tegra_dma_req { + struct list_head node; + unsigned int modid; + int instance; + + /* Called when the req is complete and from the DMA ISR context. + * When this is called the req structure is no longer queued by + * the DMA channel. + * + * State of the DMA depends on the number of req it has. If there are + * no DMA requests queued up, then it will STOP the DMA. It there are + * more requests in the DMA, then it will queue the next request. + */ + void (*complete)(struct tegra_dma_req *req); + + /* This is a called from the DMA ISR context when the DMA is still in + * progress and is actively filling same buffer. + * + * In case of continous mode receive, this threshold is 1/2 the buffer + * size. In other cases, this will not even be called as there is no + * hardware support for it. + * + * In the case of continous mode receive, if there is next req already + * queued, DMA programs the HW to use that req when this req is + * completed. If there is no "next req" queued, then DMA ISR doesn't do + * anything before calling this callback. + * + * This is mainly used by the cases, where the clients has queued + * only one req and want to get some sort of DMA threshold + * callback to program the next buffer. + * + */ + void (*threshold)(struct tegra_dma_req *req); + + /* 1 to copy to memory. + * 0 to copy from the memory to device FIFO */ + int to_memory; + + void *virt_addr; + + unsigned long source_addr; + unsigned long dest_addr; + unsigned long dest_wrap; + unsigned long source_wrap; + unsigned long source_bus_width; + unsigned long dest_bus_width; + unsigned long req_sel; + unsigned int size; + + /* Updated by the DMA driver on the conpletion of the request. */ + int bytes_transferred; + int status; + + /* DMA completion tracking information */ + int buffer_status; + + /* Client specific data */ + void *dev; +}; + +int tegra_dma_enqueue_req(struct tegra_dma_channel *ch, + struct tegra_dma_req *req); +int tegra_dma_dequeue_req(struct tegra_dma_channel *ch, + struct tegra_dma_req *req); +void tegra_dma_dequeue(struct tegra_dma_channel *ch); +void tegra_dma_flush(struct tegra_dma_channel *ch); + +bool tegra_dma_is_req_inflight(struct tegra_dma_channel *ch, + struct tegra_dma_req *req); +bool tegra_dma_is_empty(struct tegra_dma_channel *ch); + +struct tegra_dma_channel *tegra_dma_allocate_channel(int mode); +void tegra_dma_free_channel(struct tegra_dma_channel *ch); + +int __init tegra_dma_init(void); + +#endif + +#endif diff --git a/arch/arm/mach-tegra/include/mach/entry-macro.S b/arch/arm/mach-tegra/include/mach/entry-macro.S new file mode 100644 index 00000000000..2ba9e5c9d2f --- /dev/null +++ b/arch/arm/mach-tegra/include/mach/entry-macro.S @@ -0,0 +1,118 @@ +/* arch/arm/mach-tegra/include/mach/entry-macro.S + * + * Copyright (C) 2009 Palm, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ +#include <mach/iomap.h> +#include <mach/io.h> + +#if defined(CONFIG_ARM_GIC) + +#include <asm/hardware/gic.h> + + /* Uses the GIC interrupt controller built into the cpu */ +#define ICTRL_BASE (IO_CPU_VIRT + 0x100) + + .macro disable_fiq + .endm + + .macro get_irqnr_preamble, base, tmp + movw \base, #(ICTRL_BASE & 0x0000ffff) + movt \base, #((ICTRL_BASE & 0xffff0000) >> 16) + .endm + + .macro arch_ret_to_user, tmp1, tmp2 + .endm + + /* + * The interrupt numbering scheme is defined in the + * interrupt controller spec. To wit: + * + * Interrupts 0-15 are IPI + * 16-28 are reserved + * 29-31 are local. We allow 30 to be used for the watchdog. + * 32-1020 are global + * 1021-1022 are reserved + * 1023 is "spurious" (no interrupt) + * + * For now, we ignore all local interrupts so only return an interrupt + * if it's between 30 and 1020. The test_for_ipi routine below will + * pick up on IPIs. + * + * A simple read from the controller will tell us the number of the + * highest priority enabled interrupt. We then just need to check + * whether it is in the valid range for an IRQ (30-1020 inclusive). + */ + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + + /* bits 12-10 = src CPU, 9-0 = int # */ + ldr \irqstat, [\base, #GIC_CPU_INTACK] + + ldr \tmp, =1021 + + bic \irqnr, \irqstat, #0x1c00 + + cmp \irqnr, #29 + cmpcc \irqnr, \irqnr + cmpne \irqnr, \tmp + cmpcs \irqnr, \irqnr + + .endm + + /* We assume that irqstat (the raw value of the IRQ acknowledge + * register) is preserved from the macro above. + * If there is an IPI, we immediately signal end of interrupt on the + * controller, since this requires the original irqstat value which + * we won't easily be able to recreate later. + */ + + .macro test_for_ipi, irqnr, irqstat, base, tmp + bic \irqnr, \irqstat, #0x1c00 + cmp \irqnr, #16 + strcc \irqstat, [\base, #GIC_CPU_EOI] + cmpcs \irqnr, \irqnr + .endm + + /* As above, this assumes that irqstat and base are preserved.. */ + + .macro test_for_ltirq, irqnr, irqstat, base, tmp + bic \irqnr, \irqstat, #0x1c00 + mov \tmp, #0 + cmp \irqnr, #29 + moveq \tmp, #1 + streq \irqstat, [\base, #GIC_CPU_EOI] + cmp \tmp, #0 + .endm + +#else + /* legacy interrupt controller for AP16 */ + .macro disable_fiq + .endm + + .macro get_irqnr_preamble, base, tmp + @ enable imprecise aborts + cpsie a + @ EVP base at 0xf010f000 + mov \base, #0xf0000000 + orr \base, #0x00100000 + orr \base, #0x0000f000 + .endm + + .macro arch_ret_to_user, tmp1, tmp2 + .endm + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + ldr \irqnr, [\base, #0x20] @ EVT_IRQ_STS + cmp \irqnr, #0x80 + .endm +#endif diff --git a/arch/arm/mach-tegra/include/mach/gpio.h b/arch/arm/mach-tegra/include/mach/gpio.h new file mode 100644 index 00000000000..e31f486d69a --- /dev/null +++ b/arch/arm/mach-tegra/include/mach/gpio.h @@ -0,0 +1,53 @@ +/* + * arch/arm/mach-tegra/include/mach/gpio.h + * + * Copyright (C) 2010 Google, Inc. + * + * Author: + * Erik Gilling <konkers@google.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __MACH_TEGRA_GPIO_H +#define __MACH_TEGRA_GPIO_H + +#include <mach/irqs.h> + +#define TEGRA_NR_GPIOS INT_GPIO_NR + +#include <asm-generic/gpio.h> + +#define gpio_get_value __gpio_get_value +#define gpio_set_value __gpio_set_value +#define gpio_cansleep __gpio_cansleep + +#define TEGRA_GPIO_TO_IRQ(gpio) (INT_GPIO_BASE + (gpio)) +#define TEGRA_IRQ_TO_GPIO(irq) ((gpio) - INT_GPIO_BASE) + +static inline int gpio_to_irq(unsigned int gpio) +{ + if (gpio < TEGRA_NR_GPIOS) + return INT_GPIO_BASE + gpio; + return -EINVAL; +} + +static inline int irq_to_gpio(unsigned int irq) +{ + if ((irq >= INT_GPIO_BASE) && (irq < INT_GPIO_BASE + INT_GPIO_NR)) + return irq - INT_GPIO_BASE; + return -EINVAL; +} + +void tegra_gpio_enable(int gpio); +void tegra_gpio_disable(int gpio); + +#endif diff --git a/arch/arm/mach-tegra/include/mach/hardware.h b/arch/arm/mach-tegra/include/mach/hardware.h new file mode 100644 index 00000000000..56e43b3a5b9 --- /dev/null +++ b/arch/arm/mach-tegra/include/mach/hardware.h @@ -0,0 +1,28 @@ +/* + * arch/arm/mach-tegra/include/mach/hardware.h + * + * Copyright (C) 2010 Google, Inc. + * + * Author: + * Colin Cross <ccross@google.com> + * Erik Gilling <konkers@google.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __MACH_TEGRA_HARDWARE_H +#define __MACH_TEGRA_HARDWARE_H + +#define PCIBIOS_MIN_IO 0x1000 +#define PCIBIOS_MIN_MEM 0 +#define pcibios_assign_all_busses() 1 + +#endif diff --git a/arch/arm/mach-tegra/include/mach/io.h b/arch/arm/mach-tegra/include/mach/io.h new file mode 100644 index 00000000000..f0981b1ac59 --- /dev/null +++ b/arch/arm/mach-tegra/include/mach/io.h @@ -0,0 +1,95 @@ +/* + * arch/arm/mach-tegra/include/mach/io.h + * + * Copyright (C) 2010 Google, Inc. + * + * Author: + * Colin Cross <ccross@google.com> + * Erik Gilling <konkers@google.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __MACH_TEGRA_IO_H +#define __MACH_TEGRA_IO_H + +#define IO_SPACE_LIMIT 0xffff + +/* On TEGRA, many peripherals are very closely packed in + * two 256MB io windows (that actually only use about 64KB + * at the start of each). + * + * We will just map the first 1MB of each window (to minimize + * pt entries needed) and provide a macro to transform physical + * io addresses to an appropriate void __iomem *. + * + */ + +#define IO_IRAM_PHYS 0x40000000 +#define IO_IRAM_VIRT 0xFE400000 +#define IO_IRAM_SIZE SZ_256K + +#define IO_CPU_PHYS 0x50040000 +#define IO_CPU_VIRT 0xFE000000 +#define IO_CPU_SIZE SZ_16K + +#define IO_PPSB_PHYS 0x60000000 +#define IO_PPSB_VIRT 0xFE200000 +#define IO_PPSB_SIZE SZ_1M + +#define IO_APB_PHYS 0x70000000 +#define IO_APB_VIRT 0xFE300000 +#define IO_APB_SIZE SZ_1M + +#define IO_TO_VIRT_BETWEEN(p, st, sz) ((p) >= (st) && (p) < ((st) + (sz))) +#define IO_TO_VIRT_XLATE(p, pst, vst) (((p) - (pst) + (vst))) + +#define IO_TO_VIRT(n) ( \ + IO_TO_VIRT_BETWEEN((n), IO_PPSB_PHYS, IO_PPSB_SIZE) ? \ + IO_TO_VIRT_XLATE((n), IO_PPSB_PHYS, IO_PPSB_VIRT) : \ + IO_TO_VIRT_BETWEEN((n), IO_APB_PHYS, IO_APB_SIZE) ? \ + IO_TO_VIRT_XLATE((n), IO_APB_PHYS, IO_APB_VIRT) : \ + IO_TO_VIRT_BETWEEN((n), IO_CPU_PHYS, IO_CPU_SIZE) ? \ + IO_TO_VIRT_XLATE((n), IO_CPU_PHYS, IO_CPU_VIRT) : \ + IO_TO_VIRT_BETWEEN((n), IO_IRAM_PHYS, IO_IRAM_SIZE) ? \ + IO_TO_VIRT_XLATE((n), IO_IRAM_PHYS, IO_IRAM_VIRT) : \ + 0) + +#ifndef __ASSEMBLER__ + +#define __arch_ioremap(p, s, t) tegra_ioremap(p, s, t) +#define __arch_iounmap(v) tegra_iounmap(v) + +void __iomem *tegra_ioremap(unsigned long phys, size_t size, unsigned int type); +void tegra_iounmap(volatile void __iomem *addr); + +#define IO_ADDRESS(n) ((void __iomem *) IO_TO_VIRT(n)) + +#ifdef CONFIG_TEGRA_PCI +extern void __iomem *tegra_pcie_io_base; + +static inline void __iomem *__io(unsigned long addr) +{ + return tegra_pcie_io_base + (addr & IO_SPACE_LIMIT); +} +#else +static inline void __iomem *__io(unsigned long addr) +{ + return (void __iomem *)addr; +} +#endif + +#define __io(a) __io(a) +#define __mem_pci(a) (a) + +#endif + +#endif diff --git a/arch/arm/mach-tegra/include/mach/iomap.h b/arch/arm/mach-tegra/include/mach/iomap.h new file mode 100644 index 00000000000..44a4f4bcf91 --- /dev/null +++ b/arch/arm/mach-tegra/include/mach/iomap.h @@ -0,0 +1,224 @@ +/* + * arch/arm/mach-tegra/include/mach/iomap.h + * + * Copyright (C) 2010 Google, Inc. + * + * Author: + * Colin Cross <ccross@google.com> + * Erik Gilling <konkers@google.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __MACH_TEGRA_IOMAP_H +#define __MACH_TEGRA_IOMAP_H + +#include <asm/sizes.h> + +#define TEGRA_IRAM_BASE 0x40000000 +#define TEGRA_IRAM_SIZE SZ_256K + +#define TEGRA_ARM_PERIF_BASE 0x50040000 +#define TEGRA_ARM_PERIF_SIZE SZ_8K + +#define TEGRA_ARM_PL310_BASE 0x50043000 +#define TEGRA_ARM_PL310_SIZE SZ_4K + +#define TEGRA_ARM_INT_DIST_BASE 0x50041000 +#define TEGRA_ARM_INT_DIST_SIZE SZ_4K + +#define TEGRA_DISPLAY_BASE 0x54200000 +#define TEGRA_DISPLAY_SIZE SZ_256K + +#define TEGRA_DISPLAY2_BASE 0x54240000 +#define TEGRA_DISPLAY2_SIZE SZ_256K + +#define TEGRA_PRIMARY_ICTLR_BASE 0x60004000 +#define TEGRA_PRIMARY_ICTLR_SIZE SZ_64 + +#define TEGRA_SECONDARY_ICTLR_BASE 0x60004100 +#define TEGRA_SECONDARY_ICTLR_SIZE SZ_64 + +#define TEGRA_TERTIARY_ICTLR_BASE 0x60004200 +#define TEGRA_TERTIARY_ICTLR_SIZE SZ_64 + +#define TEGRA_QUATERNARY_ICTLR_BASE 0x60004300 +#define TEGRA_QUATERNARY_ICTLR_SIZE SZ_64 + +#define TEGRA_TMR1_BASE 0x60005000 +#define TEGRA_TMR1_SIZE SZ_8 + +#define TEGRA_TMR2_BASE 0x60005008 +#define TEGRA_TMR2_SIZE SZ_8 + +#define TEGRA_TMRUS_BASE 0x60005010 +#define TEGRA_TMRUS_SIZE SZ_64 + +#define TEGRA_TMR3_BASE 0x60005050 +#define TEGRA_TMR3_SIZE SZ_8 + +#define TEGRA_TMR4_BASE 0x60005058 +#define TEGRA_TMR4_SIZE SZ_8 + +#define TEGRA_CLK_RESET_BASE 0x60006000 +#define TEGRA_CLK_RESET_SIZE SZ_4K + +#define TEGRA_FLOW_CTRL_BASE 0x60007000 +#define TEGRA_FLOW_CTRL_SIZE 20 + +#define TEGRA_AHB_DMA_BASE 0x60008000 +#define TEGRA_AHB_DMA_SIZE SZ_4K + +#define TEGRA_AHB_DMA_CH0_BASE 0x60009000 +#define TEGRA_AHB_DMA_CH0_SIZE 32 + +#define TEGRA_APB_DMA_BASE 0x6000A000 +#define TEGRA_APB_DMA_SIZE SZ_4K + +#define TEGRA_APB_DMA_CH0_BASE 0x6000B000 +#define TEGRA_APB_DMA_CH0_SIZE 32 + +#define TEGRA_AHB_GIZMO_BASE 0x6000C004 +#define TEGRA_AHB_GIZMO_SIZE 0x10C + +#define TEGRA_STATMON_BASE 0x6000C400 +#define TEGRA_STATMON_SIZE SZ_1K + +#define TEGRA_GPIO_BASE 0x6000D000 +#define TEGRA_GPIO_SIZE SZ_4K + +#define TEGRA_EXCEPTION_VECTORS_BASE 0x6000F000 +#define TEGRA_EXCEPTION_VECTORS_SIZE SZ_4K + +#define TEGRA_APB_MISC_BASE 0x70000000 +#define TEGRA_APB_MISC_SIZE SZ_4K + +#define TEGRA_AC97_BASE 0x70002000 +#define TEGRA_AC97_SIZE SZ_512 + +#define TEGRA_SPDIF_BASE 0x70002400 +#define TEGRA_SPDIF_SIZE SZ_512 + +#define TEGRA_I2S1_BASE 0x70002800 +#define TEGRA_I2S1_SIZE SZ_256 + +#define TEGRA_I2S2_BASE 0x70002A00 +#define TEGRA_I2S2_SIZE SZ_256 + +#define TEGRA_UARTA_BASE 0x70006000 +#define TEGRA_UARTA_SIZE SZ_64 + +#define TEGRA_UARTB_BASE 0x70006040 +#define TEGRA_UARTB_SIZE SZ_64 + +#define TEGRA_UARTC_BASE 0x70006200 +#define TEGRA_UARTC_SIZE SZ_256 + +#define TEGRA_UARTD_BASE 0x70006300 +#define TEGRA_UARTD_SIZE SZ_256 + +#define TEGRA_UARTE_BASE 0x70006400 +#define TEGRA_UARTE_SIZE SZ_256 + +#define TEGRA_NAND_BASE 0x70008000 +#define TEGRA_NAND_SIZE SZ_256 + +#define TEGRA_HSMMC_BASE 0x70008500 +#define TEGRA_HSMMC_SIZE SZ_256 + +#define TEGRA_SNOR_BASE 0x70009000 +#define TEGRA_SNOR_SIZE SZ_4K + +#define TEGRA_PWFM_BASE 0x7000A000 +#define TEGRA_PWFM_SIZE SZ_256 + +#define TEGRA_MIPI_BASE 0x7000B000 +#define TEGRA_MIPI_SIZE SZ_256 + +#define TEGRA_I2C_BASE 0x7000C000 +#define TEGRA_I2C_SIZE SZ_256 + +#define TEGRA_TWC_BASE 0x7000C100 +#define TEGRA_TWC_SIZE SZ_256 + +#define TEGRA_SPI_BASE 0x7000C380 +#define TEGRA_SPI_SIZE 48 + +#define TEGRA_I2C2_BASE 0x7000C400 +#define TEGRA_I2C2_SIZE SZ_256 + +#define TEGRA_I2C3_BASE 0x7000C500 +#define TEGRA_I2C3_SIZE SZ_256 + +#define TEGRA_OWR_BASE 0x7000C600 +#define TEGRA_OWR_SIZE 80 + +#define TEGRA_DVC_BASE 0x7000D000 +#define TEGRA_DVC_SIZE SZ_512 + +#define TEGRA_SPI1_BASE 0x7000D400 +#define TEGRA_SPI1_SIZE SZ_512 + +#define TEGRA_SPI2_BASE 0x7000D600 +#define TEGRA_SPI2_SIZE SZ_512 + +#define TEGRA_SPI3_BASE 0x7000D800 +#define TEGRA_SPI3_SIZE SZ_512 + +#define TEGRA_SPI4_BASE 0x7000DA00 +#define TEGRA_SPI4_SIZE SZ_512 + +#define TEGRA_RTC_BASE 0x7000E000 +#define TEGRA_RTC_SIZE SZ_256 + +#define TEGRA_KBC_BASE 0x7000E200 +#define TEGRA_KBC_SIZE SZ_256 + +#define TEGRA_PMC_BASE 0x7000E400 +#define TEGRA_PMC_SIZE SZ_256 + +#define TEGRA_MC_BASE 0x7000F000 +#define TEGRA_MC_SIZE SZ_1K + +#define TEGRA_EMC_BASE 0x7000F400 +#define TEGRA_EMC_SIZE SZ_1K + +#define TEGRA_FUSE_BASE 0x7000F800 +#define TEGRA_FUSE_SIZE SZ_1K + +#define TEGRA_KFUSE_BASE 0x7000FC00 +#define TEGRA_KFUSE_SIZE SZ_1K + +#define TEGRA_CSITE_BASE 0x70040000 +#define TEGRA_CSITE_SIZE SZ_256K + +#define TEGRA_USB_BASE 0xC5000000 +#define TEGRA_USB_SIZE SZ_16K + +#define TEGRA_USB2_BASE 0xC5004000 +#define TEGRA_USB2_SIZE SZ_16K + +#define TEGRA_USB3_BASE 0xC5008000 +#define TEGRA_USB3_SIZE SZ_16K + +#define TEGRA_SDMMC1_BASE 0xC8000000 +#define TEGRA_SDMMC1_SIZE SZ_512 + +#define TEGRA_SDMMC2_BASE 0xC8000200 +#define TEGRA_SDMMC2_SIZE SZ_512 + +#define TEGRA_SDMMC3_BASE 0xC8000400 +#define TEGRA_SDMMC3_SIZE SZ_512 + +#define TEGRA_SDMMC4_BASE 0xC8000600 +#define TEGRA_SDMMC4_SIZE SZ_512 + +#endif diff --git a/arch/arm/mach-tegra/include/mach/irqs.h b/arch/arm/mach-tegra/include/mach/irqs.h new file mode 100644 index 00000000000..71bbf342295 --- /dev/null +++ b/arch/arm/mach-tegra/include/mach/irqs.h @@ -0,0 +1,175 @@ +/* + * arch/arm/mach-tegra/include/mach/irqs.h + * + * Copyright (C) 2010 Google, Inc. + * + * Author: + * Colin Cross <ccross@google.com> + * Erik Gilling <konkers@google.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __MACH_TEGRA_IRQS_H +#define __MACH_TEGRA_IRQS_H + +#define INT_GIC_BASE 0 + +#define IRQ_LOCALTIMER 29 + +#ifdef CONFIG_ARCH_TEGRA_2x_SOC +/* Primary Interrupt Controller */ +#define INT_PRI_BASE (INT_GIC_BASE + 32) +#define INT_TMR1 (INT_PRI_BASE + 0) +#define INT_TMR2 (INT_PRI_BASE + 1) +#define INT_RTC (INT_PRI_BASE + 2) +#define INT_I2S2 (INT_PRI_BASE + 3) +#define INT_SHR_SEM_INBOX_IBF (INT_PRI_BASE + 4) +#define INT_SHR_SEM_INBOX_IBE (INT_PRI_BASE + 5) +#define INT_SHR_SEM_OUTBOX_IBF (INT_PRI_BASE + 6) +#define INT_SHR_SEM_OUTBOX_IBE (INT_PRI_BASE + 7) +#define INT_VDE_UCQ_ERROR (INT_PRI_BASE + 8) +#define INT_VDE_SYNC_TOKEN (INT_PRI_BASE + 9) +#define INT_VDE_BSE_V (INT_PRI_BASE + 10) +#define INT_VDE_BSE_A (INT_PRI_BASE + 11) +#define INT_VDE_SXE (INT_PRI_BASE + 12) +#define INT_I2S1 (INT_PRI_BASE + 13) +#define INT_SDMMC1 (INT_PRI_BASE + 14) +#define INT_SDMMC2 (INT_PRI_BASE + 15) +#define INT_XIO (INT_PRI_BASE + 16) +#define INT_VDE (INT_PRI_BASE + 17) +#define INT_AVP_UCQ (INT_PRI_BASE + 18) +#define INT_SDMMC3 (INT_PRI_BASE + 19) +#define INT_USB (INT_PRI_BASE + 20) +#define INT_USB2 (INT_PRI_BASE + 21) +#define INT_PRI_RES_22 (INT_PRI_BASE + 22) +#define INT_EIDE (INT_PRI_BASE + 23) +#define INT_NANDFLASH (INT_PRI_BASE + 24) +#define INT_VCP (INT_PRI_BASE + 25) +#define INT_APB_DMA (INT_PRI_BASE + 26) +#define INT_AHB_DMA (INT_PRI_BASE + 27) +#define INT_GNT_0 (INT_PRI_BASE + 28) +#define INT_GNT_1 (INT_PRI_BASE + 29) +#define INT_OWR (INT_PRI_BASE + 30) +#define INT_SDMMC4 (INT_PRI_BASE + 31) + +/* Secondary Interrupt Controller */ +#define INT_SEC_BASE (INT_PRI_BASE + 32) +#define INT_GPIO1 (INT_SEC_BASE + 0) +#define INT_GPIO2 (INT_SEC_BASE + 1) +#define INT_GPIO3 (INT_SEC_BASE + 2) +#define INT_GPIO4 (INT_SEC_BASE + 3) +#define INT_UARTA (INT_SEC_BASE + 4) +#define INT_UARTB (INT_SEC_BASE + 5) +#define INT_I2C (INT_SEC_BASE + 6) +#define INT_SPI (INT_SEC_BASE + 7) +#define INT_TWC (INT_SEC_BASE + 8) +#define INT_TMR3 (INT_SEC_BASE + 9) +#define INT_TMR4 (INT_SEC_BASE + 10) +#define INT_FLOW_RSM0 (INT_SEC_BASE + 11) +#define INT_FLOW_RSM1 (INT_SEC_BASE + 12) +#define INT_SPDIF (INT_SEC_BASE + 13) +#define INT_UARTC (INT_SEC_BASE + 14) +#define INT_MIPI (INT_SEC_BASE + 15) +#define INT_EVENTA (INT_SEC_BASE + 16) +#define INT_EVENTB (INT_SEC_BASE + 17) +#define INT_EVENTC (INT_SEC_BASE + 18) +#define INT_EVENTD (INT_SEC_BASE + 19) +#define INT_VFIR (INT_SEC_BASE + 20) +#define INT_DVC (INT_SEC_BASE + 21) +#define INT_SYS_STATS_MON (INT_SEC_BASE + 22) +#define INT_GPIO5 (INT_SEC_BASE + 23) +#define INT_CPU0_PMU_INTR (INT_SEC_BASE + 24) +#define INT_CPU2_PMU_INTR (INT_SEC_BASE + 25) +#define INT_SEC_RES_26 (INT_SEC_BASE + 26) +#define INT_S_LINK1 (INT_SEC_BASE + 27) +#define INT_APB_DMA_COP (INT_SEC_BASE + 28) +#define INT_AHB_DMA_COP (INT_SEC_BASE + 29) +#define INT_DMA_TX (INT_SEC_BASE + 30) +#define INT_DMA_RX (INT_SEC_BASE + 31) + +/* Tertiary Interrupt Controller */ +#define INT_TRI_BASE (INT_SEC_BASE + 32) +#define INT_HOST1X_COP_SYNCPT (INT_TRI_BASE + 0) +#define INT_HOST1X_MPCORE_SYNCPT (INT_TRI_BASE + 1) +#define INT_HOST1X_COP_GENERAL (INT_TRI_BASE + 2) +#define INT_HOST1X_MPCORE_GENERAL (INT_TRI_BASE + 3) +#define INT_MPE_GENERAL (INT_TRI_BASE + 4) +#define INT_VI_GENERAL (INT_TRI_BASE + 5) +#define INT_EPP_GENERAL (INT_TRI_BASE + 6) +#define INT_ISP_GENERAL (INT_TRI_BASE + 7) +#define INT_2D_GENERAL (INT_TRI_BASE + 8) +#define INT_DISPLAY_GENERAL (INT_TRI_BASE + 9) +#define INT_DISPLAY_B_GENERAL (INT_TRI_BASE + 10) +#define INT_HDMI (INT_TRI_BASE + 11) +#define INT_TVO_GENERAL (INT_TRI_BASE + 12) +#define INT_MC_GENERAL (INT_TRI_BASE + 13) +#define INT_EMC_GENERAL (INT_TRI_BASE + 14) +#define INT_TRI_RES_15 (INT_TRI_BASE + 15) +#define INT_TRI_RES_16 (INT_TRI_BASE + 16) +#define INT_AC97 (INT_TRI_BASE + 17) +#define INT_SPI_2 (INT_TRI_BASE + 18) +#define INT_SPI_3 (INT_TRI_BASE + 19) +#define INT_I2C2 (INT_TRI_BASE + 20) +#define INT_KBC (INT_TRI_BASE + 21) +#define INT_EXTERNAL_PMU (INT_TRI_BASE + 22) +#define INT_GPIO6 (INT_TRI_BASE + 23) +#define INT_TVDAC (INT_TRI_BASE + 24) +#define INT_GPIO7 (INT_TRI_BASE + 25) +#define INT_UARTD (INT_TRI_BASE + 26) +#define INT_UARTE (INT_TRI_BASE + 27) +#define INT_I2C3 (INT_TRI_BASE + 28) +#define INT_SPI_4 (INT_TRI_BASE + 29) +#define INT_TRI_RES_30 (INT_TRI_BASE + 30) +#define INT_SW_RESERVED (INT_TRI_BASE + 31) + +/* Quaternary Interrupt Controller */ +#define INT_QUAD_BASE (INT_TRI_BASE + 32) +#define INT_SNOR (INT_QUAD_BASE + 0) +#define INT_USB3 (INT_QUAD_BASE + 1) +#define INT_PCIE_INTR (INT_QUAD_BASE + 2) +#define INT_PCIE_MSI (INT_QUAD_BASE + 3) +#define INT_QUAD_RES_4 (INT_QUAD_BASE + 4) +#define INT_QUAD_RES_5 (INT_QUAD_BASE + 5) +#define INT_QUAD_RES_6 (INT_QUAD_BASE + 6) +#define INT_QUAD_RES_7 (INT_QUAD_BASE + 7) +#define INT_APB_DMA_CH0 (INT_QUAD_BASE + 8) +#define INT_APB_DMA_CH1 (INT_QUAD_BASE + 9) +#define INT_APB_DMA_CH2 (INT_QUAD_BASE + 10) +#define INT_APB_DMA_CH3 (INT_QUAD_BASE + 11) +#define INT_APB_DMA_CH4 (INT_QUAD_BASE + 12) +#define INT_APB_DMA_CH5 (INT_QUAD_BASE + 13) +#define INT_APB_DMA_CH6 (INT_QUAD_BASE + 14) +#define INT_APB_DMA_CH7 (INT_QUAD_BASE + 15) +#define INT_APB_DMA_CH8 (INT_QUAD_BASE + 16) +#define INT_APB_DMA_CH9 (INT_QUAD_BASE + 17) +#define INT_APB_DMA_CH10 (INT_QUAD_BASE + 18) +#define INT_APB_DMA_CH11 (INT_QUAD_BASE + 19) +#define INT_APB_DMA_CH12 (INT_QUAD_BASE + 20) +#define INT_APB_DMA_CH13 (INT_QUAD_BASE + 21) +#define INT_APB_DMA_CH14 (INT_QUAD_BASE + 22) +#define INT_APB_DMA_CH15 (INT_QUAD_BASE + 23) +#define INT_QUAD_RES_24 (INT_QUAD_BASE + 24) +#define INT_QUAD_RES_25 (INT_QUAD_BASE + 25) +#define INT_QUAD_RES_26 (INT_QUAD_BASE + 26) +#define INT_QUAD_RES_27 (INT_QUAD_BASE + 27) +#define INT_QUAD_RES_28 (INT_QUAD_BASE + 28) +#define INT_QUAD_RES_29 (INT_QUAD_BASE + 29) +#define INT_QUAD_RES_30 (INT_QUAD_BASE + 30) +#define INT_QUAD_RES_31 (INT_QUAD_BASE + 31) + +#define INT_GPIO_BASE (INT_QUAD_BASE + 32) +#define INT_GPIO_NR (28 * 8) + +#define NR_IRQS (INT_GPIO_BASE + INT_GPIO_NR) +#endif + +#endif diff --git a/arch/arm/mach-tegra/include/mach/legacy_irq.h b/arch/arm/mach-tegra/include/mach/legacy_irq.h new file mode 100644 index 00000000000..db1eb3dd04c --- /dev/null +++ b/arch/arm/mach-tegra/include/mach/legacy_irq.h @@ -0,0 +1,31 @@ +/* + * arch/arm/mach-tegra/include/mach/legacy_irq.h + * + * Copyright (C) 2010 Google, Inc. + * Author: Colin Cross <ccross@android.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef _ARCH_ARM_MACH_TEGRA_LEGARY_IRQ_H +#define _ARCH_ARM_MACH_TEGRA_LEGARY_IRQ_H + +void tegra_legacy_mask_irq(unsigned int irq); +void tegra_legacy_unmask_irq(unsigned int irq); +void tegra_legacy_select_fiq(unsigned int irq, bool fiq); +void tegra_legacy_force_irq_set(unsigned int irq); +void tegra_legacy_force_irq_clr(unsigned int irq); +int tegra_legacy_force_irq_status(unsigned int irq); +void tegra_legacy_select_fiq(unsigned int irq, bool fiq); +unsigned long tegra_legacy_vfiq(int nr); +unsigned long tegra_legacy_class(int nr); + +#endif diff --git a/arch/arm/mach-tegra/include/mach/memory.h b/arch/arm/mach-tegra/include/mach/memory.h new file mode 100644 index 00000000000..6151bab62af --- /dev/null +++ b/arch/arm/mach-tegra/include/mach/memory.h @@ -0,0 +1,28 @@ +/* + * arch/arm/mach-tegra/include/mach/memory.h + * + * Copyright (C) 2010 Google, Inc. + * + * Author: + * Colin Cross <ccross@google.com> + * Erik Gilling <konkers@google.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __MACH_TEGRA_MEMORY_H +#define __MACH_TEGRA_MEMORY_H + +/* physical offset of RAM */ +#define PHYS_OFFSET UL(0) + +#endif + diff --git a/arch/arm/mach-tegra/include/mach/pinmux-t2.h b/arch/arm/mach-tegra/include/mach/pinmux-t2.h new file mode 100644 index 00000000000..e5b9d740f97 --- /dev/null +++ b/arch/arm/mach-tegra/include/mach/pinmux-t2.h @@ -0,0 +1,174 @@ +/* + * linux/arch/arm/mach-tegra/include/mach/pinmux-t2.h + * + * Copyright (C) 2010 Google, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __MACH_TEGRA_PINMUX_T2_H +#define __MACH_TEGRA_PINMUX_T2_H + +enum tegra_pingroup { + TEGRA_PINGROUP_ATA = 0, + TEGRA_PINGROUP_ATB, + TEGRA_PINGROUP_ATC, + TEGRA_PINGROUP_ATD, + TEGRA_PINGROUP_ATE, + TEGRA_PINGROUP_CDEV1, + TEGRA_PINGROUP_CDEV2, + TEGRA_PINGROUP_CRTP, + TEGRA_PINGROUP_CSUS, + TEGRA_PINGROUP_DAP1, + TEGRA_PINGROUP_DAP2, + TEGRA_PINGROUP_DAP3, + TEGRA_PINGROUP_DAP4, + TEGRA_PINGROUP_DDC, + TEGRA_PINGROUP_DTA, + TEGRA_PINGROUP_DTB, + TEGRA_PINGROUP_DTC, + TEGRA_PINGROUP_DTD, + TEGRA_PINGROUP_DTE, + TEGRA_PINGROUP_DTF, + TEGRA_PINGROUP_GMA, + TEGRA_PINGROUP_GMB, + TEGRA_PINGROUP_GMC, + TEGRA_PINGROUP_GMD, + TEGRA_PINGROUP_GME, + TEGRA_PINGROUP_GPU, + TEGRA_PINGROUP_GPU7, + TEGRA_PINGROUP_GPV, + TEGRA_PINGROUP_HDINT, + TEGRA_PINGROUP_I2CP, + TEGRA_PINGROUP_IRRX, + TEGRA_PINGROUP_IRTX, + TEGRA_PINGROUP_KBCA, + TEGRA_PINGROUP_KBCB, + TEGRA_PINGROUP_KBCC, + TEGRA_PINGROUP_KBCD, + TEGRA_PINGROUP_KBCE, + TEGRA_PINGROUP_KBCF, + TEGRA_PINGROUP_LCSN, + TEGRA_PINGROUP_LD0, + TEGRA_PINGROUP_LD1, + TEGRA_PINGROUP_LD10, + TEGRA_PINGROUP_LD11, + TEGRA_PINGROUP_LD12, + TEGRA_PINGROUP_LD13, + TEGRA_PINGROUP_LD14, + TEGRA_PINGROUP_LD15, + TEGRA_PINGROUP_LD16, + TEGRA_PINGROUP_LD17, + TEGRA_PINGROUP_LD2, + TEGRA_PINGROUP_LD3, + TEGRA_PINGROUP_LD4, + TEGRA_PINGROUP_LD5, + TEGRA_PINGROUP_LD6, + TEGRA_PINGROUP_LD7, + TEGRA_PINGROUP_LD8, + TEGRA_PINGROUP_LD9, + TEGRA_PINGROUP_LDC, + TEGRA_PINGROUP_LDI, + TEGRA_PINGROUP_LHP0, + TEGRA_PINGROUP_LHP1, + TEGRA_PINGROUP_LHP2, + TEGRA_PINGROUP_LHS, + TEGRA_PINGROUP_LM0, + TEGRA_PINGROUP_LM1, + TEGRA_PINGROUP_LPP, + TEGRA_PINGROUP_LPW0, + TEGRA_PINGROUP_LPW1, + TEGRA_PINGROUP_LPW2, + TEGRA_PINGROUP_LSC0, + TEGRA_PINGROUP_LSC1, + TEGRA_PINGROUP_LSCK, + TEGRA_PINGROUP_LSDA, + TEGRA_PINGROUP_LSDI, + TEGRA_PINGROUP_LSPI, + TEGRA_PINGROUP_LVP0, + TEGRA_PINGROUP_LVP1, + TEGRA_PINGROUP_LVS, + TEGRA_PINGROUP_OWC, + TEGRA_PINGROUP_PMC, + TEGRA_PINGROUP_PTA, + TEGRA_PINGROUP_RM, + TEGRA_PINGROUP_SDB, + TEGRA_PINGROUP_SDC, + TEGRA_PINGROUP_SDD, + TEGRA_PINGROUP_SDIO1, + TEGRA_PINGROUP_SLXA, + TEGRA_PINGROUP_SLXC, + TEGRA_PINGROUP_SLXD, + TEGRA_PINGROUP_SLXK, + TEGRA_PINGROUP_SPDI, + TEGRA_PINGROUP_SPDO, + TEGRA_PINGROUP_SPIA, + TEGRA_PINGROUP_SPIB, + TEGRA_PINGROUP_SPIC, + TEGRA_PINGROUP_SPID, + TEGRA_PINGROUP_SPIE, + TEGRA_PINGROUP_SPIF, + TEGRA_PINGROUP_SPIG, + TEGRA_PINGROUP_SPIH, + TEGRA_PINGROUP_UAA, + TEGRA_PINGROUP_UAB, + TEGRA_PINGROUP_UAC, + TEGRA_PINGROUP_UAD, + TEGRA_PINGROUP_UCA, + TEGRA_PINGROUP_UCB, + TEGRA_PINGROUP_UDA, + /* these pin groups only have pullup and pull down control */ + TEGRA_PINGROUP_CK32, + TEGRA_PINGROUP_DDRC, + TEGRA_PINGROUP_PMCA, + TEGRA_PINGROUP_PMCB, + TEGRA_PINGROUP_PMCC, + TEGRA_PINGROUP_PMCD, + TEGRA_PINGROUP_PMCE, + TEGRA_PINGROUP_XM2C, + TEGRA_PINGROUP_XM2D, + TEGRA_MAX_PINGROUP, +}; + +enum tegra_drive_pingroup { + TEGRA_DRIVE_PINGROUP_AO1 = 0, + TEGRA_DRIVE_PINGROUP_AO2, + TEGRA_DRIVE_PINGROUP_AT1, + TEGRA_DRIVE_PINGROUP_AT2, + TEGRA_DRIVE_PINGROUP_CDEV1, + TEGRA_DRIVE_PINGROUP_CDEV2, + TEGRA_DRIVE_PINGROUP_CSUS, + TEGRA_DRIVE_PINGROUP_DAP1, + TEGRA_DRIVE_PINGROUP_DAP2, + TEGRA_DRIVE_PINGROUP_DAP3, + TEGRA_DRIVE_PINGROUP_DAP4, + TEGRA_DRIVE_PINGROUP_DBG, + TEGRA_DRIVE_PINGROUP_LCD1, + TEGRA_DRIVE_PINGROUP_LCD2, + TEGRA_DRIVE_PINGROUP_SDMMC2, + TEGRA_DRIVE_PINGROUP_SDMMC3, + TEGRA_DRIVE_PINGROUP_SPI, + TEGRA_DRIVE_PINGROUP_UAA, + TEGRA_DRIVE_PINGROUP_UAB, + TEGRA_DRIVE_PINGROUP_UART2, + TEGRA_DRIVE_PINGROUP_UART3, + TEGRA_DRIVE_PINGROUP_VI1, + TEGRA_DRIVE_PINGROUP_VI2, + TEGRA_DRIVE_PINGROUP_XM2A, + TEGRA_DRIVE_PINGROUP_XM2C, + TEGRA_DRIVE_PINGROUP_XM2D, + TEGRA_DRIVE_PINGROUP_XM2CLK, + TEGRA_DRIVE_PINGROUP_MEMCOMP, + TEGRA_MAX_DRIVE_PINGROUP, +}; + +#endif + diff --git a/arch/arm/mach-tegra/include/mach/pinmux.h b/arch/arm/mach-tegra/include/mach/pinmux.h new file mode 100644 index 00000000000..defd8775def --- /dev/null +++ b/arch/arm/mach-tegra/include/mach/pinmux.h @@ -0,0 +1,240 @@ +/* + * linux/arch/arm/mach-tegra/include/mach/pinmux.h + * + * Copyright (C) 2010 Google, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __MACH_TEGRA_PINMUX_H +#define __MACH_TEGRA_PINMUX_H + +#if defined(CONFIG_ARCH_TEGRA_2x_SOC) +#include "pinmux-t2.h" +#else +#error "Undefined Tegra architecture" +#endif + +enum tegra_mux_func { + TEGRA_MUX_RSVD = 0x8000, + TEGRA_MUX_RSVD1 = 0x8000, + TEGRA_MUX_RSVD2 = 0x8001, + TEGRA_MUX_RSVD3 = 0x8002, + TEGRA_MUX_RSVD4 = 0x8003, + TEGRA_MUX_NONE = -1, + TEGRA_MUX_AHB_CLK, + TEGRA_MUX_APB_CLK, + TEGRA_MUX_AUDIO_SYNC, + TEGRA_MUX_CRT, + TEGRA_MUX_DAP1, + TEGRA_MUX_DAP2, + TEGRA_MUX_DAP3, + TEGRA_MUX_DAP4, + TEGRA_MUX_DAP5, + TEGRA_MUX_DISPLAYA, + TEGRA_MUX_DISPLAYB, + TEGRA_MUX_EMC_TEST0_DLL, + TEGRA_MUX_EMC_TEST1_DLL, + TEGRA_MUX_GMI, + TEGRA_MUX_GMI_INT, + TEGRA_MUX_HDMI, + TEGRA_MUX_I2C, + TEGRA_MUX_I2C2, + TEGRA_MUX_I2C3, + TEGRA_MUX_IDE, + TEGRA_MUX_IRDA, + TEGRA_MUX_KBC, + TEGRA_MUX_MIO, + TEGRA_MUX_MIPI_HS, + TEGRA_MUX_NAND, + TEGRA_MUX_OSC, + TEGRA_MUX_OWR, + TEGRA_MUX_PCIE, + TEGRA_MUX_PLLA_OUT, + TEGRA_MUX_PLLC_OUT1, + TEGRA_MUX_PLLM_OUT1, + TEGRA_MUX_PLLP_OUT2, + TEGRA_MUX_PLLP_OUT3, + TEGRA_MUX_PLLP_OUT4, + TEGRA_MUX_PWM, + TEGRA_MUX_PWR_INTR, + TEGRA_MUX_PWR_ON, + TEGRA_MUX_RTCK, + TEGRA_MUX_SDIO1, + TEGRA_MUX_SDIO2, + TEGRA_MUX_SDIO3, + TEGRA_MUX_SDIO4, + TEGRA_MUX_SFLASH, + TEGRA_MUX_SPDIF, + TEGRA_MUX_SPI1, + TEGRA_MUX_SPI2, + TEGRA_MUX_SPI2_ALT, + TEGRA_MUX_SPI3, + TEGRA_MUX_SPI4, + TEGRA_MUX_TRACE, + TEGRA_MUX_TWC, + TEGRA_MUX_UARTA, + TEGRA_MUX_UARTB, + TEGRA_MUX_UARTC, + TEGRA_MUX_UARTD, + TEGRA_MUX_UARTE, + TEGRA_MUX_ULPI, + TEGRA_MUX_VI, + TEGRA_MUX_VI_SENSOR_CLK, + TEGRA_MUX_XIO, + TEGRA_MUX_SAFE, + TEGRA_MAX_MUX, +}; + +enum tegra_pullupdown { + TEGRA_PUPD_NORMAL = 0, + TEGRA_PUPD_PULL_DOWN, + TEGRA_PUPD_PULL_UP, +}; + +enum tegra_tristate { + TEGRA_TRI_NORMAL = 0, + TEGRA_TRI_TRISTATE = 1, +}; + +enum tegra_vddio { + TEGRA_VDDIO_BB = 0, + TEGRA_VDDIO_LCD, + TEGRA_VDDIO_VI, + TEGRA_VDDIO_UART, + TEGRA_VDDIO_DDR, + TEGRA_VDDIO_NAND, + TEGRA_VDDIO_SYS, + TEGRA_VDDIO_AUDIO, + TEGRA_VDDIO_SD, +}; + +struct tegra_pingroup_config { + enum tegra_pingroup pingroup; + enum tegra_mux_func func; + enum tegra_pullupdown pupd; + enum tegra_tristate tristate; +}; + +enum tegra_slew { + TEGRA_SLEW_FASTEST = 0, + TEGRA_SLEW_FAST, + TEGRA_SLEW_SLOW, + TEGRA_SLEW_SLOWEST, + TEGRA_MAX_SLEW, +}; + +enum tegra_pull_strength { + TEGRA_PULL_0 = 0, + TEGRA_PULL_1, + TEGRA_PULL_2, + TEGRA_PULL_3, + TEGRA_PULL_4, + TEGRA_PULL_5, + TEGRA_PULL_6, + TEGRA_PULL_7, + TEGRA_PULL_8, + TEGRA_PULL_9, + TEGRA_PULL_10, + TEGRA_PULL_11, + TEGRA_PULL_12, + TEGRA_PULL_13, + TEGRA_PULL_14, + TEGRA_PULL_15, + TEGRA_PULL_16, + TEGRA_PULL_17, + TEGRA_PULL_18, + TEGRA_PULL_19, + TEGRA_PULL_20, + TEGRA_PULL_21, + TEGRA_PULL_22, + TEGRA_PULL_23, + TEGRA_PULL_24, + TEGRA_PULL_25, + TEGRA_PULL_26, + TEGRA_PULL_27, + TEGRA_PULL_28, + TEGRA_PULL_29, + TEGRA_PULL_30, + TEGRA_PULL_31, + TEGRA_MAX_PULL, +}; + +enum tegra_drive { + TEGRA_DRIVE_DIV_8 = 0, + TEGRA_DRIVE_DIV_4, + TEGRA_DRIVE_DIV_2, + TEGRA_DRIVE_DIV_1, + TEGRA_MAX_DRIVE, +}; + +enum tegra_hsm { + TEGRA_HSM_DISABLE = 0, + TEGRA_HSM_ENABLE, +}; + +enum tegra_schmitt { + TEGRA_SCHMITT_DISABLE = 0, + TEGRA_SCHMITT_ENABLE, +}; + +struct tegra_drive_pingroup_config { + enum tegra_drive_pingroup pingroup; + enum tegra_hsm hsm; + enum tegra_schmitt schmitt; + enum tegra_drive drive; + enum tegra_pull_strength pull_down; + enum tegra_pull_strength pull_up; + enum tegra_slew slew_rising; + enum tegra_slew slew_falling; +}; + +struct tegra_drive_pingroup_desc { + const char *name; + s16 reg; +}; + +struct tegra_pingroup_desc { + const char *name; + int funcs[4]; + int func_safe; + int vddio; + s16 tri_reg; /* offset into the TRISTATE_REG_* register bank */ + s16 mux_reg; /* offset into the PIN_MUX_CTL_* register bank */ + s16 pupd_reg; /* offset into the PULL_UPDOWN_REG_* register bank */ + s8 tri_bit; /* offset into the TRISTATE_REG_* register bit */ + s8 mux_bit; /* offset into the PIN_MUX_CTL_* register bit */ + s8 pupd_bit; /* offset into the PULL_UPDOWN_REG_* register bit */ +}; + +extern const struct tegra_pingroup_desc tegra_soc_pingroups[]; +extern const struct tegra_drive_pingroup_desc tegra_soc_drive_pingroups[]; + +int tegra_pinmux_set_tristate(enum tegra_pingroup pg, + enum tegra_tristate tristate); +int tegra_pinmux_set_pullupdown(enum tegra_pingroup pg, + enum tegra_pullupdown pupd); + +void tegra_pinmux_config_table(const struct tegra_pingroup_config *config, + int len); + +void tegra_drive_pinmux_config_table(struct tegra_drive_pingroup_config *config, + int len); +void tegra_pinmux_set_safe_pinmux_table(const struct tegra_pingroup_config *config, + int len); +void tegra_pinmux_config_pinmux_table(const struct tegra_pingroup_config *config, + int len); +void tegra_pinmux_config_tristate_table(const struct tegra_pingroup_config *config, + int len, enum tegra_tristate tristate); +void tegra_pinmux_config_pullupdown_table(const struct tegra_pingroup_config *config, + int len, enum tegra_pullupdown pupd); +#endif + diff --git a/arch/arm/mach-tegra/include/mach/smp.h b/arch/arm/mach-tegra/include/mach/smp.h new file mode 100644 index 00000000000..e4a34a35a54 --- /dev/null +++ b/arch/arm/mach-tegra/include/mach/smp.h @@ -0,0 +1,22 @@ +#ifndef ASMARM_ARCH_SMP_H +#define ASMARM_ARCH_SMP_H + +#include <asm/hardware/gic.h> +#include <asm/smp_mpidr.h> + +/* + * We use IRQ1 as the IPI + */ +static inline void smp_cross_call(const struct cpumask *mask) +{ + gic_raise_softirq(mask, 1); +} + +/* + * Do nothing on MPcore. + */ +static inline void smp_cross_call_done(cpumask_t callmap) +{ +} + +#endif diff --git a/arch/arm/mach-tegra/include/mach/system.h b/arch/arm/mach-tegra/include/mach/system.h new file mode 100644 index 00000000000..84d5d46113f --- /dev/null +++ b/arch/arm/mach-tegra/include/mach/system.h @@ -0,0 +1,39 @@ +/* + * arch/arm/mach-tegra/include/mach/system.h + * + * Copyright (C) 2010 Google, Inc. + * + * Author: + * Colin Cross <ccross@google.com> + * Erik Gilling <konkers@google.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __MACH_TEGRA_SYSTEM_H +#define __MACH_TEGRA_SYSTEM_H + +#include <mach/hardware.h> +#include <mach/iomap.h> + +static inline void arch_idle(void) +{ +} + +static inline void arch_reset(char mode, const char *cmd) +{ + void __iomem *reset = IO_ADDRESS(TEGRA_CLK_RESET_BASE + 0x04); + u32 reg = readl(reset); + reg |= 0x04; + writel(reg, reset); +} + +#endif diff --git a/arch/arm/mach-tegra/include/mach/timex.h b/arch/arm/mach-tegra/include/mach/timex.h new file mode 100644 index 00000000000..a44ccbdb7db --- /dev/null +++ b/arch/arm/mach-tegra/include/mach/timex.h @@ -0,0 +1,26 @@ +/* + * arch/arm/mach-tegra/include/mach/timex.h + * + * Copyright (C) 2010 Google, Inc. + * + * Author: + * Colin Cross <ccross@google.com> + * Erik Gilling <konkers@google.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __MACH_TEGRA_TIMEX_H +#define __MACH_TEGRA_TIMEX_H + +#define CLOCK_TICK_RATE 1000000 + +#endif diff --git a/arch/arm/mach-tegra/include/mach/uncompress.h b/arch/arm/mach-tegra/include/mach/uncompress.h new file mode 100644 index 00000000000..6c4dd815abd --- /dev/null +++ b/arch/arm/mach-tegra/include/mach/uncompress.h @@ -0,0 +1,78 @@ +/* + * arch/arm/mach-tegra/include/mach/uncompress.h + * + * Copyright (C) 2010 Google, Inc. + * + * Author: + * Colin Cross <ccross@google.com> + * Erik Gilling <konkers@google.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __MACH_TEGRA_UNCOMPRESS_H +#define __MACH_TEGRA_UNCOMPRESS_H + +#include <linux/types.h> +#include <linux/serial_reg.h> + +#include <mach/iomap.h> + +#if defined(CONFIG_TEGRA_DEBUG_UARTA) +#define DEBUG_UART_BASE TEGRA_UARTA_BASE +#elif defined(CONFIG_TEGRA_DEBUG_UARTB) +#define DEBUG_UART_BASE TEGRA_UARTB_BASE +#elif defined(CONFIG_TEGRA_DEBUG_UARTC) +#define DEBUG_UART_BASE TEGRA_UARTC_BASE +#elif defined(CONFIG_TEGRA_DEBUG_UARTD) +#define DEBUG_UART_BASE TEGRA_UARTD_BASE +#elif defined(CONFIG_TEGRA_DEBUG_UARTE) +#define DEBUG_UART_BASE TEGRA_UARTE_BASE +#else +#define DEBUG_UART_BASE NULL +#endif + +static void putc(int c) +{ + volatile u8 *uart = (volatile u8 *)DEBUG_UART_BASE; + int shift = 2; + + if (uart == NULL) + return; + + while (!(uart[UART_LSR << shift] & UART_LSR_THRE)) + barrier(); + uart[UART_TX << shift] = c; +} + +static inline void flush(void) +{ +} + +static inline void arch_decomp_setup(void) +{ + volatile u8 *uart = (volatile u8 *)DEBUG_UART_BASE; + int shift = 2; + + if (uart == NULL) + return; + + uart[UART_LCR << shift] |= UART_LCR_DLAB; + uart[UART_DLL << shift] = 0x75; + uart[UART_DLM << shift] = 0x0; + uart[UART_LCR << shift] = 3; +} + +static inline void arch_decomp_wdog(void) +{ +} + +#endif diff --git a/arch/arm/mach-tegra/include/mach/vmalloc.h b/arch/arm/mach-tegra/include/mach/vmalloc.h new file mode 100644 index 00000000000..fd6aa65b2dc --- /dev/null +++ b/arch/arm/mach-tegra/include/mach/vmalloc.h @@ -0,0 +1,28 @@ +/* + * arch/arm/mach-tegra/include/mach/vmalloc.h + * + * Copyright (C) 2010 Google, Inc. + * + * Author: + * Colin Cross <ccross@google.com> + * Erik Gilling <konkers@google.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __MACH_TEGRA_VMALLOC_H +#define __MACH_TEGRA_VMALLOC_H + +#include <asm/sizes.h> + +#define VMALLOC_END 0xFE000000UL + +#endif diff --git a/arch/arm/mach-tegra/io.c b/arch/arm/mach-tegra/io.c new file mode 100644 index 00000000000..31848a9592f --- /dev/null +++ b/arch/arm/mach-tegra/io.c @@ -0,0 +1,84 @@ +/* + * arch/arm/mach-tegra/io.c + * + * Copyright (C) 2010 Google, Inc. + * + * Author: + * Colin Cross <ccross@google.com> + * Erik Gilling <konkers@google.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/mm.h> +#include <linux/io.h> + +#include <mach/hardware.h> +#include <asm/page.h> +#include <asm/mach/map.h> + +#include "board.h" + +static struct map_desc tegra_io_desc[] __initdata = { + { + .virtual = IO_PPSB_VIRT, + .pfn = __phys_to_pfn(IO_PPSB_PHYS), + .length = IO_PPSB_SIZE, + .type = MT_DEVICE, + }, + { + .virtual = IO_APB_VIRT, + .pfn = __phys_to_pfn(IO_APB_PHYS), + .length = IO_APB_SIZE, + .type = MT_DEVICE, + }, + { + .virtual = IO_CPU_VIRT, + .pfn = __phys_to_pfn(IO_CPU_PHYS), + .length = IO_CPU_SIZE, + .type = MT_DEVICE, + }, + { + .virtual = IO_IRAM_VIRT, + .pfn = __phys_to_pfn(IO_IRAM_PHYS), + .length = IO_IRAM_SIZE, + .type = MT_DEVICE, + }, +}; + +void __init tegra_map_common_io(void) +{ + iotable_init(tegra_io_desc, ARRAY_SIZE(tegra_io_desc)); +} + +/* + * Intercept ioremap() requests for addresses in our fixed mapping regions. + */ +void __iomem *tegra_ioremap(unsigned long p, size_t size, unsigned int type) +{ + void __iomem *v = IO_ADDRESS(p); + if (v == NULL) + v = __arm_ioremap(p, size, type); + return v; +} +EXPORT_SYMBOL(tegra_ioremap); + +void tegra_iounmap(volatile void __iomem *addr) +{ + unsigned long virt = (unsigned long)addr; + + if (virt >= VMALLOC_START && virt < VMALLOC_END) + __iounmap(addr); +} +EXPORT_SYMBOL(tegra_iounmap); diff --git a/arch/arm/mach-tegra/irq.c b/arch/arm/mach-tegra/irq.c new file mode 100644 index 00000000000..50a8dfb9a0c --- /dev/null +++ b/arch/arm/mach-tegra/irq.c @@ -0,0 +1,171 @@ +/* + * Copyright (C) 2010 Google, Inc. + * + * Author: + * Colin Cross <ccross@google.com> + * + * Copyright (C) 2010, NVIDIA Corporation + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/io.h> + +#include <asm/hardware/gic.h> + +#include <mach/iomap.h> + +#include "board.h" + +#define INT_SYS_NR (INT_GPIO_BASE - INT_PRI_BASE) +#define INT_SYS_SZ (INT_SEC_BASE - INT_PRI_BASE) +#define PPI_NR ((INT_SYS_NR+INT_SYS_SZ-1)/INT_SYS_SZ) + +#define APBDMA_IRQ_STA_CPU 0x14 +#define APBDMA_IRQ_MASK_SET 0x20 +#define APBDMA_IRQ_MASK_CLR 0x24 + +#define ICTLR_CPU_IER 0x20 +#define ICTLR_CPU_IER_SET 0x24 +#define ICTLR_CPU_IER_CLR 0x28 +#define ICTLR_CPU_IEP_CLASS 0x2c +#define ICTLR_COP_IER 0x30 +#define ICTLR_COP_IER_SET 0x34 +#define ICTLR_COP_IER_CLR 0x38 +#define ICTLR_COP_IEP_CLASS 0x3c + +static void (*gic_mask_irq)(unsigned int irq); +static void (*gic_unmask_irq)(unsigned int irq); + +#define irq_to_ictlr(irq) (((irq)-32) >> 5) +static void __iomem *tegra_ictlr_base = IO_ADDRESS(TEGRA_PRIMARY_ICTLR_BASE); +#define ictlr_to_virt(ictlr) (tegra_ictlr_base + (ictlr)*0x100) + +static void tegra_mask(unsigned int irq) +{ + void __iomem *addr = ictlr_to_virt(irq_to_ictlr(irq)); + gic_mask_irq(irq); + writel(1<<(irq&31), addr+ICTLR_CPU_IER_CLR); +} + +static void tegra_unmask(unsigned int irq) +{ + void __iomem *addr = ictlr_to_virt(irq_to_ictlr(irq)); + gic_unmask_irq(irq); + writel(1<<(irq&31), addr+ICTLR_CPU_IER_SET); +} + +#ifdef CONFIG_PM + +static int tegra_set_wake(unsigned int irq, unsigned int on) +{ + return 0; +} +#endif + +static struct irq_chip tegra_irq = { + .name = "PPI", + .mask = tegra_mask, + .unmask = tegra_unmask, +#ifdef CONFIG_PM + .set_wake = tegra_set_wake, +#endif +}; + +void __init tegra_init_irq(void) +{ + struct irq_chip *gic; + unsigned int i; + + for (i = 0; i < PPI_NR; i++) { + writel(~0, ictlr_to_virt(i) + ICTLR_CPU_IER_CLR); + writel(0, ictlr_to_virt(i) + ICTLR_CPU_IEP_CLASS); + } + + gic_dist_init(0, IO_ADDRESS(TEGRA_ARM_INT_DIST_BASE), 29); + gic_cpu_init(0, IO_ADDRESS(TEGRA_ARM_PERIF_BASE + 0x100)); + + gic = get_irq_chip(29); + gic_unmask_irq = gic->unmask; + gic_mask_irq = gic->mask; + tegra_irq.ack = gic->ack; +#ifdef CONFIG_SMP + tegra_irq.set_affinity = gic->set_affinity; +#endif + + for (i = INT_PRI_BASE; i < INT_GPIO_BASE; i++) { + set_irq_chip(i, &tegra_irq); + set_irq_handler(i, handle_level_irq); + set_irq_flags(i, IRQF_VALID); + } +} + +#ifdef CONFIG_PM +static u32 cop_ier[PPI_NR]; +static u32 cpu_ier[PPI_NR]; +static u32 cpu_iep[PPI_NR]; + +void tegra_irq_suspend(void) +{ + unsigned long flags; + int i; + + for (i = INT_PRI_BASE; i < INT_GPIO_BASE; i++) { + struct irq_desc *desc = irq_to_desc(i); + if (!desc) + continue; + if (desc->status & IRQ_WAKEUP) { + pr_debug("irq %d is wakeup\n", i); + continue; + } + disable_irq(i); + } + + local_irq_save(flags); + for (i = 0; i < PPI_NR; i++) { + void __iomem *ictlr = ictlr_to_virt(i); + cpu_ier[i] = readl(ictlr + ICTLR_CPU_IER); + cpu_iep[i] = readl(ictlr + ICTLR_CPU_IEP_CLASS); + cop_ier[i] = readl(ictlr + ICTLR_COP_IER); + writel(~0, ictlr + ICTLR_COP_IER_CLR); + } + local_irq_restore(flags); +} + +void tegra_irq_resume(void) +{ + unsigned long flags; + int i; + + local_irq_save(flags); + for (i = 0; i < PPI_NR; i++) { + void __iomem *ictlr = ictlr_to_virt(i); + writel(cpu_iep[i], ictlr + ICTLR_CPU_IEP_CLASS); + writel(~0ul, ictlr + ICTLR_CPU_IER_CLR); + writel(cpu_ier[i], ictlr + ICTLR_CPU_IER_SET); + writel(0, ictlr + ICTLR_COP_IEP_CLASS); + writel(~0ul, ictlr + ICTLR_COP_IER_CLR); + writel(cop_ier[i], ictlr + ICTLR_COP_IER_SET); + } + local_irq_restore(flags); + + for (i = INT_PRI_BASE; i < INT_GPIO_BASE; i++) { + struct irq_desc *desc = irq_to_desc(i); + if (!desc || (desc->status & IRQ_WAKEUP)) + continue; + enable_irq(i); + } +} +#endif diff --git a/arch/arm/mach-tegra/legacy_irq.c b/arch/arm/mach-tegra/legacy_irq.c new file mode 100644 index 00000000000..7cc8601c19f --- /dev/null +++ b/arch/arm/mach-tegra/legacy_irq.c @@ -0,0 +1,114 @@ +/* + * arch/arm/mach-tegra/legacy_irq.c + * + * Copyright (C) 2010 Google, Inc. + * Author: Colin Cross <ccross@android.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/io.h> +#include <linux/kernel.h> +#include <mach/iomap.h> +#include <mach/legacy_irq.h> + +#define ICTLR_CPU_IER 0x20 +#define ICTLR_CPU_IER_SET 0x24 +#define ICTLR_CPU_IER_CLR 0x28 +#define ICTLR_CPU_IEP_CLASS 0x2C +#define ICTLR_CPU_IEP_VFIQ 0x08 +#define ICTLR_CPU_IEP_FIR 0x14 +#define ICTLR_CPU_IEP_FIR_SET 0x18 +#define ICTLR_CPU_IEP_FIR_CLR 0x1c + +static void __iomem *ictlr_reg_base[] = { + IO_ADDRESS(TEGRA_PRIMARY_ICTLR_BASE), + IO_ADDRESS(TEGRA_SECONDARY_ICTLR_BASE), + IO_ADDRESS(TEGRA_TERTIARY_ICTLR_BASE), + IO_ADDRESS(TEGRA_QUATERNARY_ICTLR_BASE), +}; + +/* When going into deep sleep, the CPU is powered down, taking the GIC with it + In order to wake, the wake interrupts need to be enabled in the legacy + interrupt controller. */ +void tegra_legacy_unmask_irq(unsigned int irq) +{ + void __iomem *base; + pr_debug("%s: %d\n", __func__, irq); + + irq -= 32; + base = ictlr_reg_base[irq>>5]; + writel(1 << (irq & 31), base + ICTLR_CPU_IER_SET); +} + +void tegra_legacy_mask_irq(unsigned int irq) +{ + void __iomem *base; + pr_debug("%s: %d\n", __func__, irq); + + irq -= 32; + base = ictlr_reg_base[irq>>5]; + writel(1 << (irq & 31), base + ICTLR_CPU_IER_CLR); +} + +void tegra_legacy_force_irq_set(unsigned int irq) +{ + void __iomem *base; + pr_debug("%s: %d\n", __func__, irq); + + irq -= 32; + base = ictlr_reg_base[irq>>5]; + writel(1 << (irq & 31), base + ICTLR_CPU_IEP_FIR_SET); +} + +void tegra_legacy_force_irq_clr(unsigned int irq) +{ + void __iomem *base; + pr_debug("%s: %d\n", __func__, irq); + + irq -= 32; + base = ictlr_reg_base[irq>>5]; + writel(1 << (irq & 31), base + ICTLR_CPU_IEP_FIR_CLR); +} + +int tegra_legacy_force_irq_status(unsigned int irq) +{ + void __iomem *base; + pr_debug("%s: %d\n", __func__, irq); + + irq -= 32; + base = ictlr_reg_base[irq>>5]; + return !!(readl(base + ICTLR_CPU_IEP_FIR) & (1 << (irq & 31))); +} + +void tegra_legacy_select_fiq(unsigned int irq, bool fiq) +{ + void __iomem *base; + pr_debug("%s: %d\n", __func__, irq); + + irq -= 32; + base = ictlr_reg_base[irq>>5]; + writel(fiq << (irq & 31), base + ICTLR_CPU_IEP_CLASS); +} + +unsigned long tegra_legacy_vfiq(int nr) +{ + void __iomem *base; + base = ictlr_reg_base[nr]; + return readl(base + ICTLR_CPU_IEP_VFIQ); +} + +unsigned long tegra_legacy_class(int nr) +{ + void __iomem *base; + base = ictlr_reg_base[nr]; + return readl(base + ICTLR_CPU_IEP_CLASS); +} diff --git a/arch/arm/mach-tegra/localtimer.c b/arch/arm/mach-tegra/localtimer.c new file mode 100644 index 00000000000..f81ca7cbbc1 --- /dev/null +++ b/arch/arm/mach-tegra/localtimer.c @@ -0,0 +1,25 @@ +/* + * arch/arm/mach-tegra/localtimer.c + * + * Copyright (C) 2002 ARM Ltd. + * All Rights Reserved + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/init.h> +#include <linux/smp.h> +#include <linux/clockchips.h> +#include <asm/irq.h> +#include <asm/smp_twd.h> +#include <asm/localtimer.h> + +/* + * Setup the local clock events for a CPU. + */ +void __cpuinit local_timer_setup(struct clock_event_device *evt) +{ + evt->irq = IRQ_LOCALTIMER; + twd_timer_setup(evt); +} diff --git a/arch/arm/mach-tegra/pcie.c b/arch/arm/mach-tegra/pcie.c new file mode 100644 index 00000000000..53f5fa37014 --- /dev/null +++ b/arch/arm/mach-tegra/pcie.c @@ -0,0 +1,915 @@ +/* + * arch/arm/mach-tegra/pci.c + * + * PCIe host controller driver for TEGRA(2) SOCs + * + * Copyright (c) 2010, CompuLab, Ltd. + * Author: Mike Rapoport <mike@compulab.co.il> + * + * Based on NVIDIA PCIe driver + * Copyright (c) 2008-2009, NVIDIA Corporation. + * + * Bits taken from arch/arm/mach-dove/pcie.c + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include <linux/kernel.h> +#include <linux/pci.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/clk.h> +#include <linux/delay.h> + +#include <asm/sizes.h> +#include <asm/mach/pci.h> + +#include <mach/pinmux.h> +#include <mach/iomap.h> +#include <mach/clk.h> + +/* register definitions */ +#define AFI_OFFSET 0x3800 +#define PADS_OFFSET 0x3000 +#define RP0_OFFSET 0x0000 +#define RP1_OFFSET 0x1000 + +#define AFI_AXI_BAR0_SZ 0x00 +#define AFI_AXI_BAR1_SZ 0x04 +#define AFI_AXI_BAR2_SZ 0x08 +#define AFI_AXI_BAR3_SZ 0x0c +#define AFI_AXI_BAR4_SZ 0x10 +#define AFI_AXI_BAR5_SZ 0x14 + +#define AFI_AXI_BAR0_START 0x18 +#define AFI_AXI_BAR1_START 0x1c +#define AFI_AXI_BAR2_START 0x20 +#define AFI_AXI_BAR3_START 0x24 +#define AFI_AXI_BAR4_START 0x28 +#define AFI_AXI_BAR5_START 0x2c + +#define AFI_FPCI_BAR0 0x30 +#define AFI_FPCI_BAR1 0x34 +#define AFI_FPCI_BAR2 0x38 +#define AFI_FPCI_BAR3 0x3c +#define AFI_FPCI_BAR4 0x40 +#define AFI_FPCI_BAR5 0x44 + +#define AFI_CACHE_BAR0_SZ 0x48 +#define AFI_CACHE_BAR0_ST 0x4c +#define AFI_CACHE_BAR1_SZ 0x50 +#define AFI_CACHE_BAR1_ST 0x54 + +#define AFI_MSI_BAR_SZ 0x60 +#define AFI_MSI_FPCI_BAR_ST 0x64 +#define AFI_MSI_AXI_BAR_ST 0x68 + +#define AFI_CONFIGURATION 0xac +#define AFI_CONFIGURATION_EN_FPCI (1 << 0) + +#define AFI_FPCI_ERROR_MASKS 0xb0 + +#define AFI_INTR_MASK 0xb4 +#define AFI_INTR_MASK_INT_MASK (1 << 0) +#define AFI_INTR_MASK_MSI_MASK (1 << 8) + +#define AFI_INTR_CODE 0xb8 +#define AFI_INTR_CODE_MASK 0xf +#define AFI_INTR_MASTER_ABORT 4 +#define AFI_INTR_LEGACY 6 + +#define AFI_INTR_SIGNATURE 0xbc +#define AFI_SM_INTR_ENABLE 0xc4 + +#define AFI_AFI_INTR_ENABLE 0xc8 +#define AFI_INTR_EN_INI_SLVERR (1 << 0) +#define AFI_INTR_EN_INI_DECERR (1 << 1) +#define AFI_INTR_EN_TGT_SLVERR (1 << 2) +#define AFI_INTR_EN_TGT_DECERR (1 << 3) +#define AFI_INTR_EN_TGT_WRERR (1 << 4) +#define AFI_INTR_EN_DFPCI_DECERR (1 << 5) +#define AFI_INTR_EN_AXI_DECERR (1 << 6) +#define AFI_INTR_EN_FPCI_TIMEOUT (1 << 7) + +#define AFI_PCIE_CONFIG 0x0f8 +#define AFI_PCIE_CONFIG_PCIEC0_DISABLE_DEVICE (1 << 1) +#define AFI_PCIE_CONFIG_PCIEC1_DISABLE_DEVICE (1 << 2) +#define AFI_PCIE_CONFIG_SM2TMS0_XBAR_CONFIG_MASK (0xf << 20) +#define AFI_PCIE_CONFIG_SM2TMS0_XBAR_CONFIG_SINGLE (0x0 << 20) +#define AFI_PCIE_CONFIG_SM2TMS0_XBAR_CONFIG_DUAL (0x1 << 20) + +#define AFI_FUSE 0x104 +#define AFI_FUSE_PCIE_T0_GEN2_DIS (1 << 2) + +#define AFI_PEX0_CTRL 0x110 +#define AFI_PEX1_CTRL 0x118 +#define AFI_PEX_CTRL_RST (1 << 0) +#define AFI_PEX_CTRL_REFCLK_EN (1 << 3) + +#define RP_VEND_XP 0x00000F00 +#define RP_VEND_XP_DL_UP (1 << 30) + +#define RP_LINK_CONTROL_STATUS 0x00000090 +#define RP_LINK_CONTROL_STATUS_LINKSTAT_MASK 0x3fff0000 + +#define PADS_CTL_SEL 0x0000009C + +#define PADS_CTL 0x000000A0 +#define PADS_CTL_IDDQ_1L (1 << 0) +#define PADS_CTL_TX_DATA_EN_1L (1 << 6) +#define PADS_CTL_RX_DATA_EN_1L (1 << 10) + +#define PADS_PLL_CTL 0x000000B8 +#define PADS_PLL_CTL_RST_B4SM (1 << 1) +#define PADS_PLL_CTL_LOCKDET (1 << 8) +#define PADS_PLL_CTL_REFCLK_MASK (0x3 << 16) +#define PADS_PLL_CTL_REFCLK_INTERNAL_CML (0 << 16) +#define PADS_PLL_CTL_REFCLK_INTERNAL_CMOS (1 << 16) +#define PADS_PLL_CTL_REFCLK_EXTERNAL (2 << 16) +#define PADS_PLL_CTL_TXCLKREF_MASK (0x1 << 20) +#define PADS_PLL_CTL_TXCLKREF_DIV10 (0 << 20) +#define PADS_PLL_CTL_TXCLKREF_DIV5 (1 << 20) + +/* PMC access is required for PCIE xclk (un)clamping */ +#define PMC_SCRATCH42 0x144 +#define PMC_SCRATCH42_PCX_CLAMP (1 << 0) + +static void __iomem *reg_pmc_base = IO_ADDRESS(TEGRA_PMC_BASE); + +#define pmc_writel(value, reg) \ + __raw_writel(value, (u32)reg_pmc_base + (reg)) +#define pmc_readl(reg) \ + __raw_readl((u32)reg_pmc_base + (reg)) + +/* + * Tegra2 defines 1GB in the AXI address map for PCIe. + * + * That address space is split into different regions, with sizes and + * offsets as follows: + * + * 0x80000000 - 0x80003fff - PCI controller registers + * 0x80004000 - 0x80103fff - PCI configuration space + * 0x80104000 - 0x80203fff - PCI extended configuration space + * 0x80203fff - 0x803fffff - unused + * 0x80400000 - 0x8040ffff - downstream IO + * 0x80410000 - 0x8fffffff - unused + * 0x90000000 - 0x9fffffff - non-prefetchable memory + * 0xa0000000 - 0xbfffffff - prefetchable memory + */ +#define TEGRA_PCIE_BASE 0x80000000 + +#define PCIE_REGS_SZ SZ_16K +#define PCIE_CFG_OFF PCIE_REGS_SZ +#define PCIE_CFG_SZ SZ_1M +#define PCIE_EXT_CFG_OFF (PCIE_CFG_SZ + PCIE_CFG_OFF) +#define PCIE_EXT_CFG_SZ SZ_1M +#define PCIE_IOMAP_SZ (PCIE_REGS_SZ + PCIE_CFG_SZ + PCIE_EXT_CFG_SZ) + +#define MMIO_BASE (TEGRA_PCIE_BASE + SZ_4M) +#define MMIO_SIZE SZ_64K +#define MEM_BASE_0 (TEGRA_PCIE_BASE + SZ_256M) +#define MEM_SIZE_0 SZ_128M +#define MEM_BASE_1 (MEM_BASE_0 + MEM_SIZE_0) +#define MEM_SIZE_1 SZ_128M +#define PREFETCH_MEM_BASE_0 (MEM_BASE_1 + MEM_SIZE_1) +#define PREFETCH_MEM_SIZE_0 SZ_128M +#define PREFETCH_MEM_BASE_1 (PREFETCH_MEM_BASE_0 + PREFETCH_MEM_SIZE_0) +#define PREFETCH_MEM_SIZE_1 SZ_128M + +#define PCIE_CONF_BUS(b) ((b) << 16) +#define PCIE_CONF_DEV(d) ((d) << 11) +#define PCIE_CONF_FUNC(f) ((f) << 8) +#define PCIE_CONF_REG(r) \ + (((r) & ~0x3) | (((r) < 256) ? PCIE_CFG_OFF : PCIE_EXT_CFG_OFF)) + +struct tegra_pcie_port { + int index; + u8 root_bus_nr; + void __iomem *base; + + bool link_up; + + char io_space_name[16]; + char mem_space_name[16]; + char prefetch_space_name[20]; + struct resource res[3]; +}; + +struct tegra_pcie_info { + struct tegra_pcie_port port[2]; + int num_ports; + + void __iomem *regs; + struct resource res_mmio; + + struct clk *pex_clk; + struct clk *afi_clk; + struct clk *pcie_xclk; + struct clk *pll_e; +}; + +static struct tegra_pcie_info tegra_pcie = { + .res_mmio = { + .name = "PCI IO", + .start = MMIO_BASE, + .end = MMIO_BASE + MMIO_SIZE - 1, + .flags = IORESOURCE_MEM, + }, +}; + +void __iomem *tegra_pcie_io_base; +EXPORT_SYMBOL(tegra_pcie_io_base); + +static inline void afi_writel(u32 value, unsigned long offset) +{ + writel(value, offset + AFI_OFFSET + tegra_pcie.regs); +} + +static inline u32 afi_readl(unsigned long offset) +{ + return readl(offset + AFI_OFFSET + tegra_pcie.regs); +} + +static inline void pads_writel(u32 value, unsigned long offset) +{ + writel(value, offset + PADS_OFFSET + tegra_pcie.regs); +} + +static inline u32 pads_readl(unsigned long offset) +{ + return readl(offset + PADS_OFFSET + tegra_pcie.regs); +} + +static struct tegra_pcie_port *bus_to_port(int bus) +{ + int i; + + for (i = tegra_pcie.num_ports - 1; i >= 0; i--) { + int rbus = tegra_pcie.port[i].root_bus_nr; + if (rbus != -1 && rbus == bus) + break; + } + + return i >= 0 ? tegra_pcie.port + i : NULL; +} + +static int tegra_pcie_read_conf(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 *val) +{ + struct tegra_pcie_port *pp = bus_to_port(bus->number); + void __iomem *addr; + + if (pp) { + if (devfn != 0) { + *val = 0xffffffff; + return PCIBIOS_DEVICE_NOT_FOUND; + } + + addr = pp->base + (where & ~0x3); + } else { + addr = tegra_pcie.regs + (PCIE_CONF_BUS(bus->number) + + PCIE_CONF_DEV(PCI_SLOT(devfn)) + + PCIE_CONF_FUNC(PCI_FUNC(devfn)) + + PCIE_CONF_REG(where)); + } + + *val = readl(addr); + + if (size == 1) + *val = (*val >> (8 * (where & 3))) & 0xff; + else if (size == 2) + *val = (*val >> (8 * (where & 3))) & 0xffff; + + return PCIBIOS_SUCCESSFUL; +} + +static int tegra_pcie_write_conf(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 val) +{ + struct tegra_pcie_port *pp = bus_to_port(bus->number); + void __iomem *addr; + + u32 mask; + u32 tmp; + + if (pp) { + if (devfn != 0) + return PCIBIOS_DEVICE_NOT_FOUND; + + addr = pp->base + (where & ~0x3); + } else { + addr = tegra_pcie.regs + (PCIE_CONF_BUS(bus->number) + + PCIE_CONF_DEV(PCI_SLOT(devfn)) + + PCIE_CONF_FUNC(PCI_FUNC(devfn)) + + PCIE_CONF_REG(where)); + } + + if (size == 4) { + writel(val, addr); + return PCIBIOS_SUCCESSFUL; + } + + if (size == 2) + mask = ~(0xffff << ((where & 0x3) * 8)); + else if (size == 1) + mask = ~(0xff << ((where & 0x3) * 8)); + else + return PCIBIOS_BAD_REGISTER_NUMBER; + + tmp = readl(addr) & mask; + tmp |= val << ((where & 0x3) * 8); + writel(tmp, addr); + + return PCIBIOS_SUCCESSFUL; +} + +static struct pci_ops tegra_pcie_ops = { + .read = tegra_pcie_read_conf, + .write = tegra_pcie_write_conf, +}; + +static void __devinit tegra_pcie_fixup_bridge(struct pci_dev *dev) +{ + u16 reg; + + if ((dev->class >> 16) == PCI_BASE_CLASS_BRIDGE) { + pci_read_config_word(dev, PCI_COMMAND, ®); + reg |= (PCI_COMMAND_IO | PCI_COMMAND_MEMORY | + PCI_COMMAND_MASTER | PCI_COMMAND_SERR); + pci_write_config_word(dev, PCI_COMMAND, reg); + } +} +DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, tegra_pcie_fixup_bridge); + +/* Tegra PCIE root complex wrongly reports device class */ +static void __devinit tegra_pcie_fixup_class(struct pci_dev *dev) +{ + dev->class = PCI_CLASS_BRIDGE_PCI << 8; +} +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0bf0, tegra_pcie_fixup_class); +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0bf1, tegra_pcie_fixup_class); + +/* Tegra PCIE requires relaxed ordering */ +static void __devinit tegra_pcie_relax_enable(struct pci_dev *dev) +{ + u16 val16; + int pos = pci_find_capability(dev, PCI_CAP_ID_EXP); + + if (pos <= 0) { + dev_err(&dev->dev, "skipping relaxed ordering fixup\n"); + return; + } + + pci_read_config_word(dev, pos + PCI_EXP_DEVCTL, &val16); + val16 |= PCI_EXP_DEVCTL_RELAX_EN; + pci_write_config_word(dev, pos + PCI_EXP_DEVCTL, val16); +} +DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, tegra_pcie_relax_enable); + +static int tegra_pcie_setup(int nr, struct pci_sys_data *sys) +{ + struct tegra_pcie_port *pp; + + if (nr >= tegra_pcie.num_ports) + return 0; + + pp = tegra_pcie.port + nr; + pp->root_bus_nr = sys->busnr; + + /* + * IORESOURCE_IO + */ + snprintf(pp->io_space_name, sizeof(pp->io_space_name), + "PCIe %d I/O", pp->index); + pp->io_space_name[sizeof(pp->io_space_name) - 1] = 0; + pp->res[0].name = pp->io_space_name; + if (pp->index == 0) { + pp->res[0].start = PCIBIOS_MIN_IO; + pp->res[0].end = pp->res[0].start + SZ_32K - 1; + } else { + pp->res[0].start = PCIBIOS_MIN_IO + SZ_32K; + pp->res[0].end = IO_SPACE_LIMIT; + } + pp->res[0].flags = IORESOURCE_IO; + if (request_resource(&ioport_resource, &pp->res[0])) + panic("Request PCIe IO resource failed\n"); + sys->resource[0] = &pp->res[0]; + + /* + * IORESOURCE_MEM + */ + snprintf(pp->mem_space_name, sizeof(pp->mem_space_name), + "PCIe %d MEM", pp->index); + pp->mem_space_name[sizeof(pp->mem_space_name) - 1] = 0; + pp->res[1].name = pp->mem_space_name; + if (pp->index == 0) { + pp->res[1].start = MEM_BASE_0; + pp->res[1].end = pp->res[1].start + MEM_SIZE_0 - 1; + } else { + pp->res[1].start = MEM_BASE_1; + pp->res[1].end = pp->res[1].start + MEM_SIZE_1 - 1; + } + pp->res[1].flags = IORESOURCE_MEM; + if (request_resource(&iomem_resource, &pp->res[1])) + panic("Request PCIe Memory resource failed\n"); + sys->resource[1] = &pp->res[1]; + + /* + * IORESOURCE_MEM | IORESOURCE_PREFETCH + */ + snprintf(pp->prefetch_space_name, sizeof(pp->prefetch_space_name), + "PCIe %d PREFETCH MEM", pp->index); + pp->prefetch_space_name[sizeof(pp->prefetch_space_name) - 1] = 0; + pp->res[2].name = pp->prefetch_space_name; + if (pp->index == 0) { + pp->res[2].start = PREFETCH_MEM_BASE_0; + pp->res[2].end = pp->res[2].start + PREFETCH_MEM_SIZE_0 - 1; + } else { + pp->res[2].start = PREFETCH_MEM_BASE_1; + pp->res[2].end = pp->res[2].start + PREFETCH_MEM_SIZE_1 - 1; + } + pp->res[2].flags = IORESOURCE_MEM | IORESOURCE_PREFETCH; + if (request_resource(&iomem_resource, &pp->res[2])) + panic("Request PCIe Prefetch Memory resource failed\n"); + sys->resource[2] = &pp->res[2]; + + return 1; +} + +static int tegra_pcie_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +{ + return INT_PCIE_INTR; +} + +static struct pci_bus __init *tegra_pcie_scan_bus(int nr, + struct pci_sys_data *sys) +{ + struct tegra_pcie_port *pp; + + if (nr >= tegra_pcie.num_ports) + return 0; + + pp = tegra_pcie.port + nr; + pp->root_bus_nr = sys->busnr; + + return pci_scan_bus(sys->busnr, &tegra_pcie_ops, sys); +} + +static struct hw_pci tegra_pcie_hw __initdata = { + .nr_controllers = 2, + .setup = tegra_pcie_setup, + .scan = tegra_pcie_scan_bus, + .swizzle = pci_std_swizzle, + .map_irq = tegra_pcie_map_irq, +}; + + +static irqreturn_t tegra_pcie_isr(int irq, void *arg) +{ + const char *err_msg[] = { + "Unknown", + "AXI slave error", + "AXI decode error", + "Target abort", + "Master abort", + "Invalid write", + "Response decoding error", + "AXI response decoding error", + "Transcation timeout", + }; + + u32 code, signature; + + code = afi_readl(AFI_INTR_CODE) & AFI_INTR_CODE_MASK; + signature = afi_readl(AFI_INTR_SIGNATURE); + afi_writel(0, AFI_INTR_CODE); + + if (code == AFI_INTR_LEGACY) + return IRQ_NONE; + + if (code >= ARRAY_SIZE(err_msg)) + code = 0; + + /* + * do not pollute kernel log with master abort reports since they + * happen a lot during enumeration + */ + if (code == AFI_INTR_MASTER_ABORT) + pr_debug("PCIE: %s, signature: %08x\n", err_msg[code], signature); + else + pr_err("PCIE: %s, signature: %08x\n", err_msg[code], signature); + + return IRQ_HANDLED; +} + +static void tegra_pcie_setup_translations(void) +{ + u32 fpci_bar; + u32 size; + u32 axi_address; + + /* Bar 0: config Bar */ + fpci_bar = ((u32)0xfdff << 16); + size = PCIE_CFG_SZ; + axi_address = TEGRA_PCIE_BASE + PCIE_CFG_OFF; + afi_writel(axi_address, AFI_AXI_BAR0_START); + afi_writel(size >> 12, AFI_AXI_BAR0_SZ); + afi_writel(fpci_bar, AFI_FPCI_BAR0); + + /* Bar 1: extended config Bar */ + fpci_bar = ((u32)0xfe1 << 20); + size = PCIE_EXT_CFG_SZ; + axi_address = TEGRA_PCIE_BASE + PCIE_EXT_CFG_OFF; + afi_writel(axi_address, AFI_AXI_BAR1_START); + afi_writel(size >> 12, AFI_AXI_BAR1_SZ); + afi_writel(fpci_bar, AFI_FPCI_BAR1); + + /* Bar 2: downstream IO bar */ + fpci_bar = ((__u32)0xfdfc << 16); + size = MMIO_SIZE; + axi_address = MMIO_BASE; + afi_writel(axi_address, AFI_AXI_BAR2_START); + afi_writel(size >> 12, AFI_AXI_BAR2_SZ); + afi_writel(fpci_bar, AFI_FPCI_BAR2); + + /* Bar 3: prefetchable memory BAR */ + fpci_bar = (((PREFETCH_MEM_BASE_0 >> 12) & 0x0fffffff) << 4) | 0x1; + size = PREFETCH_MEM_SIZE_0 + PREFETCH_MEM_SIZE_1; + axi_address = PREFETCH_MEM_BASE_0; + afi_writel(axi_address, AFI_AXI_BAR3_START); + afi_writel(size >> 12, AFI_AXI_BAR3_SZ); + afi_writel(fpci_bar, AFI_FPCI_BAR3); + + /* Bar 4: non prefetchable memory BAR */ + fpci_bar = (((MEM_BASE_0 >> 12) & 0x0FFFFFFF) << 4) | 0x1; + size = MEM_SIZE_0 + MEM_SIZE_1; + axi_address = MEM_BASE_0; + afi_writel(axi_address, AFI_AXI_BAR4_START); + afi_writel(size >> 12, AFI_AXI_BAR4_SZ); + afi_writel(fpci_bar, AFI_FPCI_BAR4); + + /* Bar 5: NULL out the remaining BAR as it is not used */ + fpci_bar = 0; + size = 0; + axi_address = 0; + afi_writel(axi_address, AFI_AXI_BAR5_START); + afi_writel(size >> 12, AFI_AXI_BAR5_SZ); + afi_writel(fpci_bar, AFI_FPCI_BAR5); + + /* map all upstream transactions as uncached */ + afi_writel(PHYS_OFFSET, AFI_CACHE_BAR0_ST); + afi_writel(0, AFI_CACHE_BAR0_SZ); + afi_writel(0, AFI_CACHE_BAR1_ST); + afi_writel(0, AFI_CACHE_BAR1_SZ); + + /* No MSI */ + afi_writel(0, AFI_MSI_FPCI_BAR_ST); + afi_writel(0, AFI_MSI_BAR_SZ); + afi_writel(0, AFI_MSI_AXI_BAR_ST); + afi_writel(0, AFI_MSI_BAR_SZ); +} + +static void tegra_pcie_enable_controller(void) +{ + u32 val, reg; + int i; + + /* Enable slot clock and pulse the reset signals */ + for (i = 0, reg = AFI_PEX0_CTRL; i < 2; i++, reg += 0x8) { + val = afi_readl(reg) | AFI_PEX_CTRL_REFCLK_EN; + afi_writel(val, reg); + val &= ~AFI_PEX_CTRL_RST; + afi_writel(val, reg); + + val = afi_readl(reg) | AFI_PEX_CTRL_RST; + afi_writel(val, reg); + } + + /* Enable dual controller and both ports */ + val = afi_readl(AFI_PCIE_CONFIG); + val &= ~(AFI_PCIE_CONFIG_PCIEC0_DISABLE_DEVICE | + AFI_PCIE_CONFIG_PCIEC1_DISABLE_DEVICE | + AFI_PCIE_CONFIG_SM2TMS0_XBAR_CONFIG_MASK); + val |= AFI_PCIE_CONFIG_SM2TMS0_XBAR_CONFIG_DUAL; + afi_writel(val, AFI_PCIE_CONFIG); + + val = afi_readl(AFI_FUSE) & ~AFI_FUSE_PCIE_T0_GEN2_DIS; + afi_writel(val, AFI_FUSE); + + /* Initialze internal PHY, enable up to 16 PCIE lanes */ + pads_writel(0x0, PADS_CTL_SEL); + + /* override IDDQ to 1 on all 4 lanes */ + val = pads_readl(PADS_CTL) | PADS_CTL_IDDQ_1L; + pads_writel(val, PADS_CTL); + + /* + * set up PHY PLL inputs select PLLE output as refclock, + * set TX ref sel to div10 (not div5) + */ + val = pads_readl(PADS_PLL_CTL); + val &= ~(PADS_PLL_CTL_REFCLK_MASK | PADS_PLL_CTL_TXCLKREF_MASK); + val |= (PADS_PLL_CTL_REFCLK_INTERNAL_CML | PADS_PLL_CTL_TXCLKREF_DIV10); + pads_writel(val, PADS_PLL_CTL); + + /* take PLL out of reset */ + val = pads_readl(PADS_PLL_CTL) | PADS_PLL_CTL_RST_B4SM; + pads_writel(val, PADS_PLL_CTL); + + /* + * Hack, set the clock voltage to the DEFAULT provided by hw folks. + * This doesn't exist in the documentation + */ + pads_writel(0xfa5cfa5c, 0xc8); + + /* Wait for the PLL to lock */ + do { + val = pads_readl(PADS_PLL_CTL); + } while (!(val & PADS_PLL_CTL_LOCKDET)); + + /* turn off IDDQ override */ + val = pads_readl(PADS_CTL) & ~PADS_CTL_IDDQ_1L; + pads_writel(val, PADS_CTL); + + /* enable TX/RX data */ + val = pads_readl(PADS_CTL); + val |= (PADS_CTL_TX_DATA_EN_1L | PADS_CTL_RX_DATA_EN_1L); + pads_writel(val, PADS_CTL); + + /* Take the PCIe interface module out of reset */ + tegra_periph_reset_deassert(tegra_pcie.pcie_xclk); + + /* Finally enable PCIe */ + val = afi_readl(AFI_CONFIGURATION) | AFI_CONFIGURATION_EN_FPCI; + afi_writel(val, AFI_CONFIGURATION); + + val = (AFI_INTR_EN_INI_SLVERR | AFI_INTR_EN_INI_DECERR | + AFI_INTR_EN_TGT_SLVERR | AFI_INTR_EN_TGT_DECERR | + AFI_INTR_EN_TGT_WRERR | AFI_INTR_EN_DFPCI_DECERR); + afi_writel(val, AFI_AFI_INTR_ENABLE); + afi_writel(0xffffffff, AFI_SM_INTR_ENABLE); + + /* FIXME: No MSI for now, only INT */ + afi_writel(AFI_INTR_MASK_INT_MASK, AFI_INTR_MASK); + + /* Disable all execptions */ + afi_writel(0, AFI_FPCI_ERROR_MASKS); + + return; +} + +static void tegra_pcie_xclk_clamp(bool clamp) +{ + u32 reg; + + reg = pmc_readl(PMC_SCRATCH42) & ~PMC_SCRATCH42_PCX_CLAMP; + + if (clamp) + reg |= PMC_SCRATCH42_PCX_CLAMP; + + pmc_writel(reg, PMC_SCRATCH42); +} + +static int tegra_pcie_power_on(void) +{ + tegra_pcie_xclk_clamp(true); + tegra_periph_reset_assert(tegra_pcie.pcie_xclk); + tegra_pcie_xclk_clamp(false); + + clk_enable(tegra_pcie.afi_clk); + clk_enable(tegra_pcie.pex_clk); + return clk_enable(tegra_pcie.pll_e); +} + +static void tegra_pcie_power_off(void) +{ + tegra_periph_reset_assert(tegra_pcie.pcie_xclk); + tegra_periph_reset_assert(tegra_pcie.afi_clk); + tegra_periph_reset_assert(tegra_pcie.pex_clk); + + tegra_pcie_xclk_clamp(true); +} + +static int tegra_pcie_clocks_get(void) +{ + int err; + + tegra_pcie.pex_clk = clk_get(NULL, "pex"); + if (IS_ERR(tegra_pcie.pex_clk)) + return PTR_ERR(tegra_pcie.pex_clk); + + tegra_pcie.afi_clk = clk_get(NULL, "afi"); + if (IS_ERR(tegra_pcie.afi_clk)) { + err = PTR_ERR(tegra_pcie.afi_clk); + goto err_afi_clk; + } + + tegra_pcie.pcie_xclk = clk_get(NULL, "pcie_xclk"); + if (IS_ERR(tegra_pcie.pcie_xclk)) { + err = PTR_ERR(tegra_pcie.pcie_xclk); + goto err_pcie_xclk; + } + + tegra_pcie.pll_e = clk_get_sys(NULL, "pll_e"); + if (IS_ERR(tegra_pcie.pll_e)) { + err = PTR_ERR(tegra_pcie.pll_e); + goto err_pll_e; + } + + return 0; + +err_pll_e: + clk_put(tegra_pcie.pcie_xclk); +err_pcie_xclk: + clk_put(tegra_pcie.afi_clk); +err_afi_clk: + clk_put(tegra_pcie.pex_clk); + + return err; +} + +static void tegra_pcie_clocks_put(void) +{ + clk_put(tegra_pcie.pll_e); + clk_put(tegra_pcie.pcie_xclk); + clk_put(tegra_pcie.afi_clk); + clk_put(tegra_pcie.pex_clk); +} + +static int __init tegra_pcie_get_resources(void) +{ + struct resource *res_mmio = &tegra_pcie.res_mmio; + int err; + + err = tegra_pcie_clocks_get(); + if (err) { + pr_err("PCIE: failed to get clocks: %d\n", err); + return err; + } + + err = tegra_pcie_power_on(); + if (err) { + pr_err("PCIE: failed to power up: %d\n", err); + goto err_pwr_on; + } + + tegra_pcie.regs = ioremap_nocache(TEGRA_PCIE_BASE, PCIE_IOMAP_SZ); + if (tegra_pcie.regs == NULL) { + pr_err("PCIE: Failed to map PCI/AFI registers\n"); + err = -ENOMEM; + goto err_map_reg; + } + + err = request_resource(&iomem_resource, res_mmio); + if (err) { + pr_err("PCIE: Failed to request resources: %d\n", err); + goto err_req_io; + } + + tegra_pcie_io_base = ioremap_nocache(res_mmio->start, + resource_size(res_mmio)); + if (tegra_pcie_io_base == NULL) { + pr_err("PCIE: Failed to map IO\n"); + err = -ENOMEM; + goto err_map_io; + } + + err = request_irq(INT_PCIE_INTR, tegra_pcie_isr, + IRQF_SHARED, "PCIE", &tegra_pcie); + if (err) { + pr_err("PCIE: Failed to register IRQ: %d\n", err); + goto err_irq; + } + set_irq_flags(INT_PCIE_INTR, IRQF_VALID); + + return 0; + +err_irq: + iounmap(tegra_pcie_io_base); +err_map_io: + release_resource(&tegra_pcie.res_mmio); +err_req_io: + iounmap(tegra_pcie.regs); +err_map_reg: + tegra_pcie_power_off(); +err_pwr_on: + tegra_pcie_clocks_put(); + + return err; +} + +/* + * FIXME: If there are no PCIe cards attached, then calling this function + * can result in the increase of the bootup time as there are big timeout + * loops. + */ +#define TEGRA_PCIE_LINKUP_TIMEOUT 200 /* up to 1.2 seconds */ +static bool tegra_pcie_check_link(struct tegra_pcie_port *pp, int idx, + u32 reset_reg) +{ + u32 reg; + int retries = 3; + int timeout; + + do { + timeout = TEGRA_PCIE_LINKUP_TIMEOUT; + while (timeout) { + reg = readl(pp->base + RP_VEND_XP); + + if (reg & RP_VEND_XP_DL_UP) + break; + + mdelay(1); + timeout--; + } + + if (!timeout) { + pr_err("PCIE: port %d: link down, retrying\n", idx); + goto retry; + } + + timeout = TEGRA_PCIE_LINKUP_TIMEOUT; + while (timeout) { + reg = readl(pp->base + RP_LINK_CONTROL_STATUS); + + if (reg & 0x20000000) + return true; + + mdelay(1); + timeout--; + } + +retry: + /* Pulse the PEX reset */ + reg = afi_readl(reset_reg) | AFI_PEX_CTRL_RST; + afi_writel(reg, reset_reg); + mdelay(1); + reg = afi_readl(reset_reg) & ~AFI_PEX_CTRL_RST; + afi_writel(reg, reset_reg); + + retries--; + } while (retries); + + return false; +} + +static void __init tegra_pcie_add_port(int index, u32 offset, u32 reset_reg) +{ + struct tegra_pcie_port *pp; + + pp = tegra_pcie.port + tegra_pcie.num_ports; + + pp->index = -1; + pp->base = tegra_pcie.regs + offset; + pp->link_up = tegra_pcie_check_link(pp, index, reset_reg); + + if (!pp->link_up) { + pp->base = NULL; + printk(KERN_INFO "PCIE: port %d: link down, ignoring\n", index); + return; + } + + tegra_pcie.num_ports++; + pp->index = index; + pp->root_bus_nr = -1; + memset(pp->res, 0, sizeof(pp->res)); +} + +int __init tegra_pcie_init(bool init_port0, bool init_port1) +{ + int err; + + if (!(init_port0 || init_port1)) + return -ENODEV; + + err = tegra_pcie_get_resources(); + if (err) + return err; + + tegra_pcie_enable_controller(); + + /* setup the AFI address translations */ + tegra_pcie_setup_translations(); + + if (init_port0) + tegra_pcie_add_port(0, RP0_OFFSET, AFI_PEX0_CTRL); + + if (init_port1) + tegra_pcie_add_port(1, RP1_OFFSET, AFI_PEX1_CTRL); + + pci_common_init(&tegra_pcie_hw); + + return 0; +} diff --git a/arch/arm/mach-tegra/pinmux-t2-tables.c b/arch/arm/mach-tegra/pinmux-t2-tables.c new file mode 100644 index 00000000000..a6ea34e782d --- /dev/null +++ b/arch/arm/mach-tegra/pinmux-t2-tables.c @@ -0,0 +1,260 @@ +/* + * linux/arch/arm/mach-tegra/pinmux-t2-tables.c + * + * Common pinmux configurations for Tegra 2 SoCs + * + * Copyright (C) 2010 NVIDIA Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/spinlock.h> +#include <linux/io.h> +#include <linux/init.h> +#include <linux/string.h> + +#include <mach/iomap.h> +#include <mach/pinmux.h> + +#define DRIVE_PINGROUP(pg_name, r) \ + [TEGRA_DRIVE_PINGROUP_ ## pg_name] = { \ + .name = #pg_name, \ + .reg = r \ + } + +const struct tegra_drive_pingroup_desc tegra_soc_drive_pingroups[TEGRA_MAX_DRIVE_PINGROUP] = { + DRIVE_PINGROUP(AO1, 0x868), + DRIVE_PINGROUP(AO2, 0x86c), + DRIVE_PINGROUP(AT1, 0x870), + DRIVE_PINGROUP(AT2, 0x874), + DRIVE_PINGROUP(CDEV1, 0x878), + DRIVE_PINGROUP(CDEV2, 0x87c), + DRIVE_PINGROUP(CSUS, 0x880), + DRIVE_PINGROUP(DAP1, 0x884), + DRIVE_PINGROUP(DAP2, 0x888), + DRIVE_PINGROUP(DAP3, 0x88c), + DRIVE_PINGROUP(DAP4, 0x890), + DRIVE_PINGROUP(DBG, 0x894), + DRIVE_PINGROUP(LCD1, 0x898), + DRIVE_PINGROUP(LCD2, 0x89c), + DRIVE_PINGROUP(SDMMC2, 0x8a0), + DRIVE_PINGROUP(SDMMC3, 0x8a4), + DRIVE_PINGROUP(SPI, 0x8a8), + DRIVE_PINGROUP(UAA, 0x8ac), + DRIVE_PINGROUP(UAB, 0x8b0), + DRIVE_PINGROUP(UART2, 0x8b4), + DRIVE_PINGROUP(UART3, 0x8b8), + DRIVE_PINGROUP(VI1, 0x8bc), + DRIVE_PINGROUP(VI2, 0x8c0), + DRIVE_PINGROUP(XM2A, 0x8c4), + DRIVE_PINGROUP(XM2C, 0x8c8), + DRIVE_PINGROUP(XM2D, 0x8cc), + DRIVE_PINGROUP(XM2CLK, 0x8d0), + DRIVE_PINGROUP(MEMCOMP, 0x8d4), +}; + +#define PINGROUP(pg_name, vdd, f0, f1, f2, f3, f_safe, \ + tri_r, tri_b, mux_r, mux_b, pupd_r, pupd_b) \ + [TEGRA_PINGROUP_ ## pg_name] = { \ + .name = #pg_name, \ + .vddio = TEGRA_VDDIO_ ## vdd, \ + .funcs = { \ + TEGRA_MUX_ ## f0, \ + TEGRA_MUX_ ## f1, \ + TEGRA_MUX_ ## f2, \ + TEGRA_MUX_ ## f3, \ + }, \ + .func_safe = TEGRA_MUX_ ## f_safe, \ + .tri_reg = tri_r, \ + .tri_bit = tri_b, \ + .mux_reg = mux_r, \ + .mux_bit = mux_b, \ + .pupd_reg = pupd_r, \ + .pupd_bit = pupd_b, \ + } + +const struct tegra_pingroup_desc tegra_soc_pingroups[TEGRA_MAX_PINGROUP] = { + PINGROUP(ATA, NAND, IDE, NAND, GMI, RSVD, IDE, 0x14, 0, 0x80, 24, 0xA0, 0), + PINGROUP(ATB, NAND, IDE, NAND, GMI, SDIO4, IDE, 0x14, 1, 0x80, 16, 0xA0, 2), + PINGROUP(ATC, NAND, IDE, NAND, GMI, SDIO4, IDE, 0x14, 2, 0x80, 22, 0xA0, 4), + PINGROUP(ATD, NAND, IDE, NAND, GMI, SDIO4, IDE, 0x14, 3, 0x80, 20, 0xA0, 6), + PINGROUP(ATE, NAND, IDE, NAND, GMI, RSVD, IDE, 0x18, 25, 0x80, 12, 0xA0, 8), + PINGROUP(CDEV1, AUDIO, OSC, PLLA_OUT, PLLM_OUT1, AUDIO_SYNC, OSC, 0x14, 4, 0x88, 2, 0xA8, 0), + PINGROUP(CDEV2, AUDIO, OSC, AHB_CLK, APB_CLK, PLLP_OUT4, OSC, 0x14, 5, 0x88, 4, 0xA8, 2), + PINGROUP(CRTP, LCD, CRT, RSVD, RSVD, RSVD, RSVD, 0x20, 14, 0x98, 20, 0xA4, 24), + PINGROUP(CSUS, VI, PLLC_OUT1, PLLP_OUT2, PLLP_OUT3, VI_SENSOR_CLK, PLLC_OUT1, 0x14, 6, 0x88, 6, 0xAC, 24), + PINGROUP(DAP1, AUDIO, DAP1, RSVD, GMI, SDIO2, DAP1, 0x14, 7, 0x88, 20, 0xA0, 10), + PINGROUP(DAP2, AUDIO, DAP2, TWC, RSVD, GMI, DAP2, 0x14, 8, 0x88, 22, 0xA0, 12), + PINGROUP(DAP3, BB, DAP3, RSVD, RSVD, RSVD, DAP3, 0x14, 9, 0x88, 24, 0xA0, 14), + PINGROUP(DAP4, UART, DAP4, RSVD, GMI, RSVD, DAP4, 0x14, 10, 0x88, 26, 0xA0, 16), + PINGROUP(DDC, LCD, I2C2, RSVD, RSVD, RSVD, RSVD4, 0x18, 31, 0x88, 0, 0xB0, 28), + PINGROUP(DTA, VI, RSVD, SDIO2, VI, RSVD, RSVD4, 0x14, 11, 0x84, 20, 0xA0, 18), + PINGROUP(DTB, VI, RSVD, RSVD, VI, SPI1, RSVD1, 0x14, 12, 0x84, 22, 0xA0, 20), + PINGROUP(DTC, VI, RSVD, RSVD, VI, RSVD, RSVD1, 0x14, 13, 0x84, 26, 0xA0, 22), + PINGROUP(DTD, VI, RSVD, SDIO2, VI, RSVD, RSVD1, 0x14, 14, 0x84, 28, 0xA0, 24), + PINGROUP(DTE, VI, RSVD, RSVD, VI, SPI1, RSVD1, 0x14, 15, 0x84, 30, 0xA0, 26), + PINGROUP(DTF, VI, I2C3, RSVD, VI, RSVD, RSVD4, 0x20, 12, 0x98, 30, 0xA0, 28), + PINGROUP(GMA, NAND, UARTE, SPI3, GMI, SDIO4, SPI3, 0x14, 28, 0x84, 0, 0xB0, 20), + PINGROUP(GMB, NAND, IDE, NAND, GMI, GMI_INT, GMI, 0x18, 29, 0x88, 28, 0xB0, 22), + PINGROUP(GMC, NAND, UARTD, SPI4, GMI, SFLASH, SPI4, 0x14, 29, 0x84, 2, 0xB0, 24), + PINGROUP(GMD, NAND, RSVD, NAND, GMI, SFLASH, GMI, 0x18, 30, 0x88, 30, 0xB0, 26), + PINGROUP(GME, NAND, RSVD, DAP5, GMI, SDIO4, GMI, 0x18, 0, 0x8C, 0, 0xA8, 24), + PINGROUP(GPU, UART, PWM, UARTA, GMI, RSVD, RSVD4, 0x14, 16, 0x8C, 4, 0xA4, 20), + PINGROUP(GPU7, SYS, RTCK, RSVD, RSVD, RSVD, RTCK, 0x20, 11, 0x98, 28, 0xA4, 6), + PINGROUP(GPV, SD, PCIE, RSVD, RSVD, RSVD, PCIE, 0x14, 17, 0x8C, 2, 0xA0, 30), + PINGROUP(HDINT, LCD, HDMI, RSVD, RSVD, RSVD, HDMI, 0x1C, 23, 0x84, 4, 0xAC, 22), + PINGROUP(I2CP, SYS, I2C, RSVD, RSVD, RSVD, RSVD4, 0x14, 18, 0x88, 8, 0xA4, 2), + PINGROUP(IRRX, UART, UARTA, UARTB, GMI, SPI4, UARTB, 0x14, 20, 0x88, 18, 0xA8, 22), + PINGROUP(IRTX, UART, UARTA, UARTB, GMI, SPI4, UARTB, 0x14, 19, 0x88, 16, 0xA8, 20), + PINGROUP(KBCA, SYS, KBC, NAND, SDIO2, EMC_TEST0_DLL, KBC, 0x14, 22, 0x88, 10, 0xA4, 8), + PINGROUP(KBCB, SYS, KBC, NAND, SDIO2, MIO, KBC, 0x14, 21, 0x88, 12, 0xA4, 10), + PINGROUP(KBCC, SYS, KBC, NAND, TRACE, EMC_TEST1_DLL, KBC, 0x18, 26, 0x88, 14, 0xA4, 12), + PINGROUP(KBCD, SYS, KBC, NAND, SDIO2, MIO, KBC, 0x20, 10, 0x98, 26, 0xA4, 14), + PINGROUP(KBCE, SYS, KBC, NAND, OWR, RSVD, KBC, 0x14, 26, 0x80, 28, 0xB0, 2), + PINGROUP(KBCF, SYS, KBC, NAND, TRACE, MIO, KBC, 0x14, 27, 0x80, 26, 0xB0, 0), + PINGROUP(LCSN, LCD, DISPLAYA, DISPLAYB, SPI3, RSVD, RSVD4, 0x1C, 31, 0x90, 12, 0xAC, 20), + PINGROUP(LD0, LCD, DISPLAYA, DISPLAYB, XIO, RSVD, RSVD4, 0x1C, 0, 0x94, 0, 0xAC, 12), + PINGROUP(LD1, LCD, DISPLAYA, DISPLAYB, XIO, RSVD, RSVD4, 0x1C, 1, 0x94, 2, 0xAC, 12), + PINGROUP(LD10, LCD, DISPLAYA, DISPLAYB, XIO, RSVD, RSVD4, 0x1C, 10, 0x94, 20, 0xAC, 12), + PINGROUP(LD11, LCD, DISPLAYA, DISPLAYB, XIO, RSVD, RSVD4, 0x1C, 11, 0x94, 22, 0xAC, 12), + PINGROUP(LD12, LCD, DISPLAYA, DISPLAYB, XIO, RSVD, RSVD4, 0x1C, 12, 0x94, 24, 0xAC, 12), + PINGROUP(LD13, LCD, DISPLAYA, DISPLAYB, XIO, RSVD, RSVD4, 0x1C, 13, 0x94, 26, 0xAC, 12), + PINGROUP(LD14, LCD, DISPLAYA, DISPLAYB, XIO, RSVD, RSVD4, 0x1C, 14, 0x94, 28, 0xAC, 12), + PINGROUP(LD15, LCD, DISPLAYA, DISPLAYB, XIO, RSVD, RSVD4, 0x1C, 15, 0x94, 30, 0xAC, 12), + PINGROUP(LD16, LCD, DISPLAYA, DISPLAYB, XIO, RSVD, RSVD4, 0x1C, 16, 0x98, 0, 0xAC, 12), + PINGROUP(LD17, LCD, DISPLAYA, DISPLAYB, RSVD, RSVD, RSVD4, 0x1C, 17, 0x98, 2, 0xAC, 12), + PINGROUP(LD2, LCD, DISPLAYA, DISPLAYB, XIO, RSVD, RSVD4, 0x1C, 2, 0x94, 4, 0xAC, 12), + PINGROUP(LD3, LCD, DISPLAYA, DISPLAYB, XIO, RSVD, RSVD4, 0x1C, 3, 0x94, 6, 0xAC, 12), + PINGROUP(LD4, LCD, DISPLAYA, DISPLAYB, XIO, RSVD, RSVD4, 0x1C, 4, 0x94, 8, 0xAC, 12), + PINGROUP(LD5, LCD, DISPLAYA, DISPLAYB, XIO, RSVD, RSVD4, 0x1C, 5, 0x94, 10, 0xAC, 12), + PINGROUP(LD6, LCD, DISPLAYA, DISPLAYB, XIO, RSVD, RSVD4, 0x1C, 6, 0x94, 12, 0xAC, 12), + PINGROUP(LD7, LCD, DISPLAYA, DISPLAYB, XIO, RSVD, RSVD4, 0x1C, 7, 0x94, 14, 0xAC, 12), + PINGROUP(LD8, LCD, DISPLAYA, DISPLAYB, XIO, RSVD, RSVD4, 0x1C, 8, 0x94, 16, 0xAC, 12), + PINGROUP(LD9, LCD, DISPLAYA, DISPLAYB, XIO, RSVD, RSVD4, 0x1C, 9, 0x94, 18, 0xAC, 12), + PINGROUP(LDC, LCD, DISPLAYA, DISPLAYB, RSVD, RSVD, RSVD4, 0x1C, 30, 0x90, 14, 0xAC, 20), + PINGROUP(LDI, LCD, DISPLAYA, DISPLAYB, RSVD, RSVD, RSVD4, 0x20, 6, 0x98, 16, 0xAC, 18), + PINGROUP(LHP0, LCD, DISPLAYA, DISPLAYB, RSVD, RSVD, RSVD4, 0x1C, 18, 0x98, 10, 0xAC, 16), + PINGROUP(LHP1, LCD, DISPLAYA, DISPLAYB, RSVD, RSVD, RSVD4, 0x1C, 19, 0x98, 4, 0xAC, 14), + PINGROUP(LHP2, LCD, DISPLAYA, DISPLAYB, RSVD, RSVD, RSVD4, 0x1C, 20, 0x98, 6, 0xAC, 14), + PINGROUP(LHS, LCD, DISPLAYA, DISPLAYB, XIO, RSVD, RSVD4, 0x20, 7, 0x90, 22, 0xAC, 22), + PINGROUP(LM0, LCD, DISPLAYA, DISPLAYB, SPI3, RSVD, RSVD4, 0x1C, 24, 0x90, 26, 0xAC, 22), + PINGROUP(LM1, LCD, DISPLAYA, DISPLAYB, RSVD, CRT, RSVD3, 0x1C, 25, 0x90, 28, 0xAC, 22), + PINGROUP(LPP, LCD, DISPLAYA, DISPLAYB, RSVD, RSVD, RSVD4, 0x20, 8, 0x98, 14, 0xAC, 18), + PINGROUP(LPW0, LCD, DISPLAYA, DISPLAYB, SPI3, HDMI, DISPLAYA, 0x20, 3, 0x90, 0, 0xAC, 20), + PINGROUP(LPW1, LCD, DISPLAYA, DISPLAYB, RSVD, RSVD, RSVD4, 0x20, 4, 0x90, 2, 0xAC, 20), + PINGROUP(LPW2, LCD, DISPLAYA, DISPLAYB, SPI3, HDMI, DISPLAYA, 0x20, 5, 0x90, 4, 0xAC, 20), + PINGROUP(LSC0, LCD, DISPLAYA, DISPLAYB, XIO, RSVD, RSVD4, 0x1C, 27, 0x90, 18, 0xAC, 22), + PINGROUP(LSC1, LCD, DISPLAYA, DISPLAYB, SPI3, HDMI, DISPLAYA, 0x1C, 28, 0x90, 20, 0xAC, 20), + PINGROUP(LSCK, LCD, DISPLAYA, DISPLAYB, SPI3, HDMI, DISPLAYA, 0x1C, 29, 0x90, 16, 0xAC, 20), + PINGROUP(LSDA, LCD, DISPLAYA, DISPLAYB, SPI3, HDMI, DISPLAYA, 0x20, 1, 0x90, 8, 0xAC, 20), + PINGROUP(LSDI, LCD, DISPLAYA, DISPLAYB, SPI3, RSVD, DISPLAYA, 0x20, 2, 0x90, 6, 0xAC, 20), + PINGROUP(LSPI, LCD, DISPLAYA, DISPLAYB, XIO, HDMI, DISPLAYA, 0x20, 0, 0x90, 10, 0xAC, 22), + PINGROUP(LVP0, LCD, DISPLAYA, DISPLAYB, RSVD, RSVD, RSVD4, 0x1C, 21, 0x90, 30, 0xAC, 22), + PINGROUP(LVP1, LCD, DISPLAYA, DISPLAYB, RSVD, RSVD, RSVD4, 0x1C, 22, 0x98, 8, 0xAC, 16), + PINGROUP(LVS, LCD, DISPLAYA, DISPLAYB, XIO, RSVD, RSVD4, 0x1C, 26, 0x90, 24, 0xAC, 22), + PINGROUP(OWC, SYS, OWR, RSVD, RSVD, RSVD, OWR, 0x14, 31, 0x84, 8, 0xB0, 30), + PINGROUP(PMC, SYS, PWR_ON, PWR_INTR, RSVD, RSVD, PWR_ON, 0x14, 23, 0x98, 18, -1, -1), + PINGROUP(PTA, NAND, I2C2, HDMI, GMI, RSVD, RSVD4, 0x14, 24, 0x98, 22, 0xA4, 4), + PINGROUP(RM, UART, I2C, RSVD, RSVD, RSVD, RSVD4, 0x14, 25, 0x80, 14, 0xA4, 0), + PINGROUP(SDB, SD, UARTA, PWM, SDIO3, SPI2, PWM, 0x20, 15, 0x8C, 10, -1, -1), + PINGROUP(SDC, SD, PWM, TWC, SDIO3, SPI3, TWC, 0x18, 1, 0x8C, 12, 0xAC, 28), + PINGROUP(SDD, SD, UARTA, PWM, SDIO3, SPI3, PWM, 0x18, 2, 0x8C, 14, 0xAC, 30), + PINGROUP(SDIO1, BB, SDIO1, RSVD, UARTE, UARTA, RSVD2, 0x14, 30, 0x80, 30, 0xB0, 18), + PINGROUP(SLXA, SD, PCIE, SPI4, SDIO3, SPI2, PCIE, 0x18, 3, 0x84, 6, 0xA4, 22), + PINGROUP(SLXC, SD, SPDIF, SPI4, SDIO3, SPI2, SPI4, 0x18, 5, 0x84, 10, 0xA4, 26), + PINGROUP(SLXD, SD, SPDIF, SPI4, SDIO3, SPI2, SPI4, 0x18, 6, 0x84, 12, 0xA4, 28), + PINGROUP(SLXK, SD, PCIE, SPI4, SDIO3, SPI2, PCIE, 0x18, 7, 0x84, 14, 0xA4, 30), + PINGROUP(SPDI, AUDIO, SPDIF, RSVD, I2C, SDIO2, RSVD2, 0x18, 8, 0x8C, 8, 0xA4, 16), + PINGROUP(SPDO, AUDIO, SPDIF, RSVD, I2C, SDIO2, RSVD2, 0x18, 9, 0x8C, 6, 0xA4, 18), + PINGROUP(SPIA, AUDIO, SPI1, SPI2, SPI3, GMI, GMI, 0x18, 10, 0x8C, 30, 0xA8, 4), + PINGROUP(SPIB, AUDIO, SPI1, SPI2, SPI3, GMI, GMI, 0x18, 11, 0x8C, 28, 0xA8, 6), + PINGROUP(SPIC, AUDIO, SPI1, SPI2, SPI3, GMI, GMI, 0x18, 12, 0x8C, 26, 0xA8, 8), + PINGROUP(SPID, AUDIO, SPI2, SPI1, SPI2_ALT, GMI, GMI, 0x18, 13, 0x8C, 24, 0xA8, 10), + PINGROUP(SPIE, AUDIO, SPI2, SPI1, SPI2_ALT, GMI, GMI, 0x18, 14, 0x8C, 22, 0xA8, 12), + PINGROUP(SPIF, AUDIO, SPI3, SPI1, SPI2, RSVD, RSVD4, 0x18, 15, 0x8C, 20, 0xA8, 14), + PINGROUP(SPIG, AUDIO, SPI3, SPI2, SPI2_ALT, I2C, SPI2_ALT, 0x18, 16, 0x8C, 18, 0xA8, 16), + PINGROUP(SPIH, AUDIO, SPI3, SPI2, SPI2_ALT, I2C, SPI2_ALT, 0x18, 17, 0x8C, 16, 0xA8, 18), + PINGROUP(UAA, BB, SPI3, MIPI_HS, UARTA, ULPI, MIPI_HS, 0x18, 18, 0x80, 0, 0xAC, 0), + PINGROUP(UAB, BB, SPI2, MIPI_HS, UARTA, ULPI, MIPI_HS, 0x18, 19, 0x80, 2, 0xAC, 2), + PINGROUP(UAC, BB, OWR, RSVD, RSVD, RSVD, RSVD4, 0x18, 20, 0x80, 4, 0xAC, 4), + PINGROUP(UAD, UART, IRDA, SPDIF, UARTA, SPI4, SPDIF, 0x18, 21, 0x80, 6, 0xAC, 6), + PINGROUP(UCA, UART, UARTC, RSVD, GMI, RSVD, RSVD4, 0x18, 22, 0x84, 16, 0xAC, 8), + PINGROUP(UCB, UART, UARTC, PWM, GMI, RSVD, RSVD4, 0x18, 23, 0x84, 18, 0xAC, 10), + PINGROUP(UDA, BB, SPI1, RSVD, UARTD, ULPI, RSVD2, 0x20, 13, 0x80, 8, 0xB0, 16), + /* these pin groups only have pullup and pull down control */ + PINGROUP(CK32, SYS, RSVD, RSVD, RSVD, RSVD, RSVD, -1, -1, -1, -1, 0xB0, 14), + PINGROUP(DDRC, DDR, RSVD, RSVD, RSVD, RSVD, RSVD, -1, -1, -1, -1, 0xAC, 26), + PINGROUP(PMCA, SYS, RSVD, RSVD, RSVD, RSVD, RSVD, -1, -1, -1, -1, 0xB0, 4), + PINGROUP(PMCB, SYS, RSVD, RSVD, RSVD, RSVD, RSVD, -1, -1, -1, -1, 0xB0, 6), + PINGROUP(PMCC, SYS, RSVD, RSVD, RSVD, RSVD, RSVD, -1, -1, -1, -1, 0xB0, 8), + PINGROUP(PMCD, SYS, RSVD, RSVD, RSVD, RSVD, RSVD, -1, -1, -1, -1, 0xB0, 10), + PINGROUP(PMCE, SYS, RSVD, RSVD, RSVD, RSVD, RSVD, -1, -1, -1, -1, 0xB0, 12), + PINGROUP(XM2C, DDR, RSVD, RSVD, RSVD, RSVD, RSVD, -1, -1, -1, -1, 0xA8, 30), + PINGROUP(XM2D, DDR, RSVD, RSVD, RSVD, RSVD, RSVD, -1, -1, -1, -1, 0xA8, 28), +}; + +#ifdef CONFIG_PM +#define TRISTATE_REG_A 0x14 +#define TRISTATE_REG_NUM 4 +#define PIN_MUX_CTL_REG_A 0x80 +#define PIN_MUX_CTL_REG_NUM 8 +#define PULLUPDOWN_REG_A 0xa0 +#define PULLUPDOWN_REG_NUM 5 + +static u32 pinmux_reg[TRISTATE_REG_NUM + PIN_MUX_CTL_REG_NUM + + PULLUPDOWN_REG_NUM]; + +static inline unsigned long pg_readl(unsigned long offset) +{ + return readl(IO_TO_VIRT(TEGRA_APB_MISC_BASE + offset)); +} + +static inline void pg_writel(unsigned long value, unsigned long offset) +{ + writel(value, IO_TO_VIRT(TEGRA_APB_MISC_BASE + offset)); +} + +void tegra_pinmux_suspend(void) +{ + unsigned int i; + u32 *ctx = pinmux_reg; + + for (i = 0; i < TRISTATE_REG_NUM; i++) + *ctx++ = pg_readl(TRISTATE_REG_A + i*4); + + for (i = 0; i < PIN_MUX_CTL_REG_NUM; i++) + *ctx++ = pg_readl(PIN_MUX_CTL_REG_A + i*4); + + for (i = 0; i < PULLUPDOWN_REG_NUM; i++) + *ctx++ = pg_readl(PULLUPDOWN_REG_A + i*4); +} + +void tegra_pinmux_resume(void) +{ + unsigned int i; + u32 *ctx = pinmux_reg; + + for (i = 0; i < PIN_MUX_CTL_REG_NUM; i++) + pg_writel(*ctx++, PIN_MUX_CTL_REG_A + i*4); + + for (i = 0; i < PULLUPDOWN_REG_NUM; i++) + pg_writel(*ctx++, PULLUPDOWN_REG_A + i*4); + + for (i = 0; i < TRISTATE_REG_NUM; i++) + pg_writel(*ctx++, TRISTATE_REG_A + i*4); +} +#endif diff --git a/arch/arm/mach-tegra/pinmux.c b/arch/arm/mach-tegra/pinmux.c new file mode 100644 index 00000000000..f80d507671b --- /dev/null +++ b/arch/arm/mach-tegra/pinmux.c @@ -0,0 +1,825 @@ +/* + * linux/arch/arm/mach-tegra/pinmux.c + * + * Copyright (C) 2010 Google, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/spinlock.h> +#include <linux/io.h> + +#include <mach/iomap.h> +#include <mach/pinmux.h> + +#define HSM_EN(reg) (((reg) >> 2) & 0x1) +#define SCHMT_EN(reg) (((reg) >> 3) & 0x1) +#define LPMD(reg) (((reg) >> 4) & 0x3) +#define DRVDN(reg) (((reg) >> 12) & 0x1f) +#define DRVUP(reg) (((reg) >> 20) & 0x1f) +#define SLWR(reg) (((reg) >> 28) & 0x3) +#define SLWF(reg) (((reg) >> 30) & 0x3) + +static const struct tegra_pingroup_desc *const pingroups = tegra_soc_pingroups; +static const struct tegra_drive_pingroup_desc *const drive_pingroups = tegra_soc_drive_pingroups; + +static char *tegra_mux_names[TEGRA_MAX_MUX] = { + [TEGRA_MUX_AHB_CLK] = "AHB_CLK", + [TEGRA_MUX_APB_CLK] = "APB_CLK", + [TEGRA_MUX_AUDIO_SYNC] = "AUDIO_SYNC", + [TEGRA_MUX_CRT] = "CRT", + [TEGRA_MUX_DAP1] = "DAP1", + [TEGRA_MUX_DAP2] = "DAP2", + [TEGRA_MUX_DAP3] = "DAP3", + [TEGRA_MUX_DAP4] = "DAP4", + [TEGRA_MUX_DAP5] = "DAP5", + [TEGRA_MUX_DISPLAYA] = "DISPLAYA", + [TEGRA_MUX_DISPLAYB] = "DISPLAYB", + [TEGRA_MUX_EMC_TEST0_DLL] = "EMC_TEST0_DLL", + [TEGRA_MUX_EMC_TEST1_DLL] = "EMC_TEST1_DLL", + [TEGRA_MUX_GMI] = "GMI", + [TEGRA_MUX_GMI_INT] = "GMI_INT", + [TEGRA_MUX_HDMI] = "HDMI", + [TEGRA_MUX_I2C] = "I2C", + [TEGRA_MUX_I2C2] = "I2C2", + [TEGRA_MUX_I2C3] = "I2C3", + [TEGRA_MUX_IDE] = "IDE", + [TEGRA_MUX_IRDA] = "IRDA", + [TEGRA_MUX_KBC] = "KBC", + [TEGRA_MUX_MIO] = "MIO", + [TEGRA_MUX_MIPI_HS] = "MIPI_HS", + [TEGRA_MUX_NAND] = "NAND", + [TEGRA_MUX_OSC] = "OSC", + [TEGRA_MUX_OWR] = "OWR", + [TEGRA_MUX_PCIE] = "PCIE", + [TEGRA_MUX_PLLA_OUT] = "PLLA_OUT", + [TEGRA_MUX_PLLC_OUT1] = "PLLC_OUT1", + [TEGRA_MUX_PLLM_OUT1] = "PLLM_OUT1", + [TEGRA_MUX_PLLP_OUT2] = "PLLP_OUT2", + [TEGRA_MUX_PLLP_OUT3] = "PLLP_OUT3", + [TEGRA_MUX_PLLP_OUT4] = "PLLP_OUT4", + [TEGRA_MUX_PWM] = "PWM", + [TEGRA_MUX_PWR_INTR] = "PWR_INTR", + [TEGRA_MUX_PWR_ON] = "PWR_ON", + [TEGRA_MUX_RTCK] = "RTCK", + [TEGRA_MUX_SDIO1] = "SDIO1", + [TEGRA_MUX_SDIO2] = "SDIO2", + [TEGRA_MUX_SDIO3] = "SDIO3", + [TEGRA_MUX_SDIO4] = "SDIO4", + [TEGRA_MUX_SFLASH] = "SFLASH", + [TEGRA_MUX_SPDIF] = "SPDIF", + [TEGRA_MUX_SPI1] = "SPI1", + [TEGRA_MUX_SPI2] = "SPI2", + [TEGRA_MUX_SPI2_ALT] = "SPI2_ALT", + [TEGRA_MUX_SPI3] = "SPI3", + [TEGRA_MUX_SPI4] = "SPI4", + [TEGRA_MUX_TRACE] = "TRACE", + [TEGRA_MUX_TWC] = "TWC", + [TEGRA_MUX_UARTA] = "UARTA", + [TEGRA_MUX_UARTB] = "UARTB", + [TEGRA_MUX_UARTC] = "UARTC", + [TEGRA_MUX_UARTD] = "UARTD", + [TEGRA_MUX_UARTE] = "UARTE", + [TEGRA_MUX_ULPI] = "ULPI", + [TEGRA_MUX_VI] = "VI", + [TEGRA_MUX_VI_SENSOR_CLK] = "VI_SENSOR_CLK", + [TEGRA_MUX_XIO] = "XIO", + [TEGRA_MUX_SAFE] = "<safe>", +}; + +static const char *tegra_drive_names[TEGRA_MAX_DRIVE] = { + [TEGRA_DRIVE_DIV_8] = "DIV_8", + [TEGRA_DRIVE_DIV_4] = "DIV_4", + [TEGRA_DRIVE_DIV_2] = "DIV_2", + [TEGRA_DRIVE_DIV_1] = "DIV_1", +}; + +static const char *tegra_slew_names[TEGRA_MAX_SLEW] = { + [TEGRA_SLEW_FASTEST] = "FASTEST", + [TEGRA_SLEW_FAST] = "FAST", + [TEGRA_SLEW_SLOW] = "SLOW", + [TEGRA_SLEW_SLOWEST] = "SLOWEST", +}; + +static DEFINE_SPINLOCK(mux_lock); + +static const char *pingroup_name(enum tegra_pingroup pg) +{ + if (pg < 0 || pg >= TEGRA_MAX_PINGROUP) + return "<UNKNOWN>"; + + return pingroups[pg].name; +} + +static const char *func_name(enum tegra_mux_func func) +{ + if (func == TEGRA_MUX_RSVD1) + return "RSVD1"; + + if (func == TEGRA_MUX_RSVD2) + return "RSVD2"; + + if (func == TEGRA_MUX_RSVD3) + return "RSVD3"; + + if (func == TEGRA_MUX_RSVD4) + return "RSVD4"; + + if (func == TEGRA_MUX_NONE) + return "NONE"; + + if (func < 0 || func >= TEGRA_MAX_MUX) + return "<UNKNOWN>"; + + return tegra_mux_names[func]; +} + + +static const char *tri_name(unsigned long val) +{ + return val ? "TRISTATE" : "NORMAL"; +} + +static const char *pupd_name(unsigned long val) +{ + switch (val) { + case 0: + return "NORMAL"; + + case 1: + return "PULL_DOWN"; + + case 2: + return "PULL_UP"; + + default: + return "RSVD"; + } +} + + +static inline unsigned long pg_readl(unsigned long offset) +{ + return readl(IO_TO_VIRT(TEGRA_APB_MISC_BASE + offset)); +} + +static inline void pg_writel(unsigned long value, unsigned long offset) +{ + writel(value, IO_TO_VIRT(TEGRA_APB_MISC_BASE + offset)); +} + +static int tegra_pinmux_set_func(const struct tegra_pingroup_config *config) +{ + int mux = -1; + int i; + unsigned long reg; + unsigned long flags; + enum tegra_pingroup pg = config->pingroup; + enum tegra_mux_func func = config->func; + + if (pg < 0 || pg >= TEGRA_MAX_PINGROUP) + return -ERANGE; + + if (pingroups[pg].mux_reg < 0) + return -EINVAL; + + if (func < 0) + return -ERANGE; + + if (func == TEGRA_MUX_SAFE) + func = pingroups[pg].func_safe; + + if (func & TEGRA_MUX_RSVD) { + mux = func & 0x3; + } else { + for (i = 0; i < 4; i++) { + if (pingroups[pg].funcs[i] == func) { + mux = i; + break; + } + } + } + + if (mux < 0) + return -EINVAL; + + spin_lock_irqsave(&mux_lock, flags); + + reg = pg_readl(pingroups[pg].mux_reg); + reg &= ~(0x3 << pingroups[pg].mux_bit); + reg |= mux << pingroups[pg].mux_bit; + pg_writel(reg, pingroups[pg].mux_reg); + + spin_unlock_irqrestore(&mux_lock, flags); + + return 0; +} + +int tegra_pinmux_set_tristate(enum tegra_pingroup pg, + enum tegra_tristate tristate) +{ + unsigned long reg; + unsigned long flags; + + if (pg < 0 || pg >= TEGRA_MAX_PINGROUP) + return -ERANGE; + + if (pingroups[pg].tri_reg < 0) + return -EINVAL; + + spin_lock_irqsave(&mux_lock, flags); + + reg = pg_readl(pingroups[pg].tri_reg); + reg &= ~(0x1 << pingroups[pg].tri_bit); + if (tristate) + reg |= 1 << pingroups[pg].tri_bit; + pg_writel(reg, pingroups[pg].tri_reg); + + spin_unlock_irqrestore(&mux_lock, flags); + + return 0; +} + +int tegra_pinmux_set_pullupdown(enum tegra_pingroup pg, + enum tegra_pullupdown pupd) +{ + unsigned long reg; + unsigned long flags; + + if (pg < 0 || pg >= TEGRA_MAX_PINGROUP) + return -ERANGE; + + if (pingroups[pg].pupd_reg < 0) + return -EINVAL; + + if (pupd != TEGRA_PUPD_NORMAL && + pupd != TEGRA_PUPD_PULL_DOWN && + pupd != TEGRA_PUPD_PULL_UP) + return -EINVAL; + + + spin_lock_irqsave(&mux_lock, flags); + + reg = pg_readl(pingroups[pg].pupd_reg); + reg &= ~(0x3 << pingroups[pg].pupd_bit); + reg |= pupd << pingroups[pg].pupd_bit; + pg_writel(reg, pingroups[pg].pupd_reg); + + spin_unlock_irqrestore(&mux_lock, flags); + + return 0; +} + +static void tegra_pinmux_config_pingroup(const struct tegra_pingroup_config *config) +{ + enum tegra_pingroup pingroup = config->pingroup; + enum tegra_mux_func func = config->func; + enum tegra_pullupdown pupd = config->pupd; + enum tegra_tristate tristate = config->tristate; + int err; + + if (pingroups[pingroup].mux_reg >= 0) { + err = tegra_pinmux_set_func(config); + if (err < 0) + pr_err("pinmux: can't set pingroup %s func to %s: %d\n", + pingroup_name(pingroup), func_name(func), err); + } + + if (pingroups[pingroup].pupd_reg >= 0) { + err = tegra_pinmux_set_pullupdown(pingroup, pupd); + if (err < 0) + pr_err("pinmux: can't set pingroup %s pullupdown to %s: %d\n", + pingroup_name(pingroup), pupd_name(pupd), err); + } + + if (pingroups[pingroup].tri_reg >= 0) { + err = tegra_pinmux_set_tristate(pingroup, tristate); + if (err < 0) + pr_err("pinmux: can't set pingroup %s tristate to %s: %d\n", + pingroup_name(pingroup), tri_name(func), err); + } +} + +void tegra_pinmux_config_table(const struct tegra_pingroup_config *config, int len) +{ + int i; + + for (i = 0; i < len; i++) + tegra_pinmux_config_pingroup(&config[i]); +} + +static const char *drive_pinmux_name(enum tegra_drive_pingroup pg) +{ + if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP) + return "<UNKNOWN>"; + + return drive_pingroups[pg].name; +} + +static const char *enable_name(unsigned long val) +{ + return val ? "ENABLE" : "DISABLE"; +} + +static const char *drive_name(unsigned long val) +{ + if (val >= TEGRA_MAX_DRIVE) + return "<UNKNOWN>"; + + return tegra_drive_names[val]; +} + +static const char *slew_name(unsigned long val) +{ + if (val >= TEGRA_MAX_SLEW) + return "<UNKNOWN>"; + + return tegra_slew_names[val]; +} + +static int tegra_drive_pinmux_set_hsm(enum tegra_drive_pingroup pg, + enum tegra_hsm hsm) +{ + unsigned long flags; + u32 reg; + if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP) + return -ERANGE; + + if (hsm != TEGRA_HSM_ENABLE && hsm != TEGRA_HSM_DISABLE) + return -EINVAL; + + spin_lock_irqsave(&mux_lock, flags); + + reg = pg_readl(drive_pingroups[pg].reg); + if (hsm == TEGRA_HSM_ENABLE) + reg |= (1 << 2); + else + reg &= ~(1 << 2); + pg_writel(reg, drive_pingroups[pg].reg); + + spin_unlock_irqrestore(&mux_lock, flags); + + return 0; +} + +static int tegra_drive_pinmux_set_schmitt(enum tegra_drive_pingroup pg, + enum tegra_schmitt schmitt) +{ + unsigned long flags; + u32 reg; + if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP) + return -ERANGE; + + if (schmitt != TEGRA_SCHMITT_ENABLE && schmitt != TEGRA_SCHMITT_DISABLE) + return -EINVAL; + + spin_lock_irqsave(&mux_lock, flags); + + reg = pg_readl(drive_pingroups[pg].reg); + if (schmitt == TEGRA_SCHMITT_ENABLE) + reg |= (1 << 3); + else + reg &= ~(1 << 3); + pg_writel(reg, drive_pingroups[pg].reg); + + spin_unlock_irqrestore(&mux_lock, flags); + + return 0; +} + +static int tegra_drive_pinmux_set_drive(enum tegra_drive_pingroup pg, + enum tegra_drive drive) +{ + unsigned long flags; + u32 reg; + if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP) + return -ERANGE; + + if (drive < 0 || drive >= TEGRA_MAX_DRIVE) + return -EINVAL; + + spin_lock_irqsave(&mux_lock, flags); + + reg = pg_readl(drive_pingroups[pg].reg); + reg &= ~(0x3 << 4); + reg |= drive << 4; + pg_writel(reg, drive_pingroups[pg].reg); + + spin_unlock_irqrestore(&mux_lock, flags); + + return 0; +} + +static int tegra_drive_pinmux_set_pull_down(enum tegra_drive_pingroup pg, + enum tegra_pull_strength pull_down) +{ + unsigned long flags; + u32 reg; + if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP) + return -ERANGE; + + if (pull_down < 0 || pull_down >= TEGRA_MAX_PULL) + return -EINVAL; + + spin_lock_irqsave(&mux_lock, flags); + + reg = pg_readl(drive_pingroups[pg].reg); + reg &= ~(0x1f << 12); + reg |= pull_down << 12; + pg_writel(reg, drive_pingroups[pg].reg); + + spin_unlock_irqrestore(&mux_lock, flags); + + return 0; +} + +static int tegra_drive_pinmux_set_pull_up(enum tegra_drive_pingroup pg, + enum tegra_pull_strength pull_up) +{ + unsigned long flags; + u32 reg; + if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP) + return -ERANGE; + + if (pull_up < 0 || pull_up >= TEGRA_MAX_PULL) + return -EINVAL; + + spin_lock_irqsave(&mux_lock, flags); + + reg = pg_readl(drive_pingroups[pg].reg); + reg &= ~(0x1f << 12); + reg |= pull_up << 12; + pg_writel(reg, drive_pingroups[pg].reg); + + spin_unlock_irqrestore(&mux_lock, flags); + + return 0; +} + +static int tegra_drive_pinmux_set_slew_rising(enum tegra_drive_pingroup pg, + enum tegra_slew slew_rising) +{ + unsigned long flags; + u32 reg; + if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP) + return -ERANGE; + + if (slew_rising < 0 || slew_rising >= TEGRA_MAX_SLEW) + return -EINVAL; + + spin_lock_irqsave(&mux_lock, flags); + + reg = pg_readl(drive_pingroups[pg].reg); + reg &= ~(0x3 << 28); + reg |= slew_rising << 28; + pg_writel(reg, drive_pingroups[pg].reg); + + spin_unlock_irqrestore(&mux_lock, flags); + + return 0; +} + +static int tegra_drive_pinmux_set_slew_falling(enum tegra_drive_pingroup pg, + enum tegra_slew slew_falling) +{ + unsigned long flags; + u32 reg; + if (pg < 0 || pg >= TEGRA_MAX_DRIVE_PINGROUP) + return -ERANGE; + + if (slew_falling < 0 || slew_falling >= TEGRA_MAX_SLEW) + return -EINVAL; + + spin_lock_irqsave(&mux_lock, flags); + + reg = pg_readl(drive_pingroups[pg].reg); + reg &= ~(0x3 << 30); + reg |= slew_falling << 30; + pg_writel(reg, drive_pingroups[pg].reg); + + spin_unlock_irqrestore(&mux_lock, flags); + + return 0; +} + +static void tegra_drive_pinmux_config_pingroup(enum tegra_drive_pingroup pingroup, + enum tegra_hsm hsm, + enum tegra_schmitt schmitt, + enum tegra_drive drive, + enum tegra_pull_strength pull_down, + enum tegra_pull_strength pull_up, + enum tegra_slew slew_rising, + enum tegra_slew slew_falling) +{ + int err; + + err = tegra_drive_pinmux_set_hsm(pingroup, hsm); + if (err < 0) + pr_err("pinmux: can't set pingroup %s hsm to %s: %d\n", + drive_pinmux_name(pingroup), + enable_name(hsm), err); + + err = tegra_drive_pinmux_set_schmitt(pingroup, schmitt); + if (err < 0) + pr_err("pinmux: can't set pingroup %s schmitt to %s: %d\n", + drive_pinmux_name(pingroup), + enable_name(schmitt), err); + + err = tegra_drive_pinmux_set_drive(pingroup, drive); + if (err < 0) + pr_err("pinmux: can't set pingroup %s drive to %s: %d\n", + drive_pinmux_name(pingroup), + drive_name(drive), err); + + err = tegra_drive_pinmux_set_pull_down(pingroup, pull_down); + if (err < 0) + pr_err("pinmux: can't set pingroup %s pull down to %d: %d\n", + drive_pinmux_name(pingroup), + pull_down, err); + + err = tegra_drive_pinmux_set_pull_up(pingroup, pull_up); + if (err < 0) + pr_err("pinmux: can't set pingroup %s pull up to %d: %d\n", + drive_pinmux_name(pingroup), + pull_up, err); + + err = tegra_drive_pinmux_set_slew_rising(pingroup, slew_rising); + if (err < 0) + pr_err("pinmux: can't set pingroup %s rising slew to %s: %d\n", + drive_pinmux_name(pingroup), + slew_name(slew_rising), err); + + err = tegra_drive_pinmux_set_slew_falling(pingroup, slew_falling); + if (err < 0) + pr_err("pinmux: can't set pingroup %s falling slew to %s: %d\n", + drive_pinmux_name(pingroup), + slew_name(slew_falling), err); +} + +void tegra_drive_pinmux_config_table(struct tegra_drive_pingroup_config *config, + int len) +{ + int i; + + for (i = 0; i < len; i++) + tegra_drive_pinmux_config_pingroup(config[i].pingroup, + config[i].hsm, + config[i].schmitt, + config[i].drive, + config[i].pull_down, + config[i].pull_up, + config[i].slew_rising, + config[i].slew_falling); +} + +void tegra_pinmux_set_safe_pinmux_table(const struct tegra_pingroup_config *config, + int len) +{ + int i; + struct tegra_pingroup_config c; + + for (i = 0; i < len; i++) { + int err; + c = config[i]; + if (c.pingroup < 0 || c.pingroup >= TEGRA_MAX_PINGROUP) { + WARN_ON(1); + continue; + } + c.func = pingroups[c.pingroup].func_safe; + err = tegra_pinmux_set_func(&c); + if (err < 0) + pr_err("%s: tegra_pinmux_set_func returned %d setting " + "%s to %s\n", __func__, err, + pingroup_name(c.pingroup), func_name(c.func)); + } +} + +void tegra_pinmux_config_pinmux_table(const struct tegra_pingroup_config *config, + int len) +{ + int i; + + for (i = 0; i < len; i++) { + int err; + if (config[i].pingroup < 0 || + config[i].pingroup >= TEGRA_MAX_PINGROUP) { + WARN_ON(1); + continue; + } + err = tegra_pinmux_set_func(&config[i]); + if (err < 0) + pr_err("%s: tegra_pinmux_set_func returned %d setting " + "%s to %s\n", __func__, err, + pingroup_name(config[i].pingroup), + func_name(config[i].func)); + } +} + +void tegra_pinmux_config_tristate_table(const struct tegra_pingroup_config *config, + int len, enum tegra_tristate tristate) +{ + int i; + int err; + enum tegra_pingroup pingroup; + + for (i = 0; i < len; i++) { + pingroup = config[i].pingroup; + if (pingroups[pingroup].tri_reg >= 0) { + err = tegra_pinmux_set_tristate(pingroup, tristate); + if (err < 0) + pr_err("pinmux: can't set pingroup %s tristate" + " to %s: %d\n", pingroup_name(pingroup), + tri_name(tristate), err); + } + } +} + +void tegra_pinmux_config_pullupdown_table(const struct tegra_pingroup_config *config, + int len, enum tegra_pullupdown pupd) +{ + int i; + int err; + enum tegra_pingroup pingroup; + + for (i = 0; i < len; i++) { + pingroup = config[i].pingroup; + if (pingroups[pingroup].pupd_reg >= 0) { + err = tegra_pinmux_set_pullupdown(pingroup, pupd); + if (err < 0) + pr_err("pinmux: can't set pingroup %s pullupdown" + " to %s: %d\n", pingroup_name(pingroup), + pupd_name(pupd), err); + } + } +} + +#ifdef CONFIG_DEBUG_FS + +#include <linux/debugfs.h> +#include <linux/seq_file.h> + +static void dbg_pad_field(struct seq_file *s, int len) +{ + seq_putc(s, ','); + + while (len-- > -1) + seq_putc(s, ' '); +} + +static int dbg_pinmux_show(struct seq_file *s, void *unused) +{ + int i; + int len; + + for (i = 0; i < TEGRA_MAX_PINGROUP; i++) { + unsigned long tri; + unsigned long mux; + unsigned long pupd; + + seq_printf(s, "\t{TEGRA_PINGROUP_%s", pingroups[i].name); + len = strlen(pingroups[i].name); + dbg_pad_field(s, 5 - len); + + if (pingroups[i].mux_reg < 0) { + seq_printf(s, "TEGRA_MUX_NONE"); + len = strlen("NONE"); + } else { + mux = (pg_readl(pingroups[i].mux_reg) >> + pingroups[i].mux_bit) & 0x3; + if (pingroups[i].funcs[mux] == TEGRA_MUX_RSVD) { + seq_printf(s, "TEGRA_MUX_RSVD%1lu", mux+1); + len = 5; + } else { + seq_printf(s, "TEGRA_MUX_%s", + tegra_mux_names[pingroups[i].funcs[mux]]); + len = strlen(tegra_mux_names[pingroups[i].funcs[mux]]); + } + } + dbg_pad_field(s, 13-len); + + if (pingroups[i].pupd_reg < 0) { + seq_printf(s, "TEGRA_PUPD_NORMAL"); + len = strlen("NORMAL"); + } else { + pupd = (pg_readl(pingroups[i].pupd_reg) >> + pingroups[i].pupd_bit) & 0x3; + seq_printf(s, "TEGRA_PUPD_%s", pupd_name(pupd)); + len = strlen(pupd_name(pupd)); + } + dbg_pad_field(s, 9 - len); + + if (pingroups[i].tri_reg < 0) { + seq_printf(s, "TEGRA_TRI_NORMAL"); + } else { + tri = (pg_readl(pingroups[i].tri_reg) >> + pingroups[i].tri_bit) & 0x1; + + seq_printf(s, "TEGRA_TRI_%s", tri_name(tri)); + } + seq_printf(s, "},\n"); + } + return 0; +} + +static int dbg_pinmux_open(struct inode *inode, struct file *file) +{ + return single_open(file, dbg_pinmux_show, &inode->i_private); +} + +static const struct file_operations debug_fops = { + .open = dbg_pinmux_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int dbg_drive_pinmux_show(struct seq_file *s, void *unused) +{ + int i; + int len; + + for (i = 0; i < TEGRA_MAX_DRIVE_PINGROUP; i++) { + u32 reg; + + seq_printf(s, "\t{TEGRA_DRIVE_PINGROUP_%s", + drive_pingroups[i].name); + len = strlen(drive_pingroups[i].name); + dbg_pad_field(s, 7 - len); + + + reg = pg_readl(drive_pingroups[i].reg); + if (HSM_EN(reg)) { + seq_printf(s, "TEGRA_HSM_ENABLE"); + len = 16; + } else { + seq_printf(s, "TEGRA_HSM_DISABLE"); + len = 17; + } + dbg_pad_field(s, 17 - len); + + if (SCHMT_EN(reg)) { + seq_printf(s, "TEGRA_SCHMITT_ENABLE"); + len = 21; + } else { + seq_printf(s, "TEGRA_SCHMITT_DISABLE"); + len = 22; + } + dbg_pad_field(s, 22 - len); + + seq_printf(s, "TEGRA_DRIVE_%s", drive_name(LPMD(reg))); + len = strlen(drive_name(LPMD(reg))); + dbg_pad_field(s, 5 - len); + + seq_printf(s, "TEGRA_PULL_%d", DRVDN(reg)); + len = DRVDN(reg) < 10 ? 1 : 2; + dbg_pad_field(s, 2 - len); + + seq_printf(s, "TEGRA_PULL_%d", DRVUP(reg)); + len = DRVUP(reg) < 10 ? 1 : 2; + dbg_pad_field(s, 2 - len); + + seq_printf(s, "TEGRA_SLEW_%s", slew_name(SLWR(reg))); + len = strlen(slew_name(SLWR(reg))); + dbg_pad_field(s, 7 - len); + + seq_printf(s, "TEGRA_SLEW_%s", slew_name(SLWF(reg))); + + seq_printf(s, "},\n"); + } + return 0; +} + +static int dbg_drive_pinmux_open(struct inode *inode, struct file *file) +{ + return single_open(file, dbg_drive_pinmux_show, &inode->i_private); +} + +static const struct file_operations debug_drive_fops = { + .open = dbg_drive_pinmux_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int __init tegra_pinmux_debuginit(void) +{ + (void) debugfs_create_file("tegra_pinmux", S_IRUGO, + NULL, NULL, &debug_fops); + (void) debugfs_create_file("tegra_pinmux_drive", S_IRUGO, + NULL, NULL, &debug_drive_fops); + return 0; +} +late_initcall(tegra_pinmux_debuginit); +#endif diff --git a/arch/arm/mach-tegra/platsmp.c b/arch/arm/mach-tegra/platsmp.c new file mode 100644 index 00000000000..1c0fd92cab3 --- /dev/null +++ b/arch/arm/mach-tegra/platsmp.c @@ -0,0 +1,156 @@ +/* + * linux/arch/arm/mach-tegra/platsmp.c + * + * Copyright (C) 2002 ARM Ltd. + * All Rights Reserved + * + * Copyright (C) 2009 Palm + * All Rights Reserved + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/init.h> +#include <linux/errno.h> +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/jiffies.h> +#include <linux/smp.h> +#include <linux/io.h> + +#include <asm/cacheflush.h> +#include <mach/hardware.h> +#include <asm/mach-types.h> +#include <asm/localtimer.h> +#include <asm/smp_scu.h> + +#include <mach/iomap.h> + +extern void tegra_secondary_startup(void); + +static DEFINE_SPINLOCK(boot_lock); +static void __iomem *scu_base = IO_ADDRESS(TEGRA_ARM_PERIF_BASE); + +#define EVP_CPU_RESET_VECTOR \ + (IO_ADDRESS(TEGRA_EXCEPTION_VECTORS_BASE) + 0x100) +#define CLK_RST_CONTROLLER_CLK_CPU_CMPLX \ + (IO_ADDRESS(TEGRA_CLK_RESET_BASE) + 0x4c) +#define CLK_RST_CONTROLLER_RST_CPU_CMPLX_CLR \ + (IO_ADDRESS(TEGRA_CLK_RESET_BASE) + 0x344) + +void __cpuinit platform_secondary_init(unsigned int cpu) +{ + trace_hardirqs_off(); + + /* + * if any interrupts are already enabled for the primary + * core (e.g. timer irq), then they will not have been enabled + * for us: do so + */ + gic_cpu_init(0, IO_ADDRESS(TEGRA_ARM_PERIF_BASE) + 0x100); + + /* + * Synchronise with the boot thread. + */ + spin_lock(&boot_lock); + spin_unlock(&boot_lock); +} + +int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle) +{ + unsigned long old_boot_vector; + unsigned long boot_vector; + unsigned long timeout; + u32 reg; + + /* + * set synchronisation state between this boot processor + * and the secondary one + */ + spin_lock(&boot_lock); + + + /* set the reset vector to point to the secondary_startup routine */ + + boot_vector = virt_to_phys(tegra_secondary_startup); + old_boot_vector = readl(EVP_CPU_RESET_VECTOR); + writel(boot_vector, EVP_CPU_RESET_VECTOR); + + /* enable cpu clock on cpu1 */ + reg = readl(CLK_RST_CONTROLLER_CLK_CPU_CMPLX); + writel(reg & ~(1<<9), CLK_RST_CONTROLLER_CLK_CPU_CMPLX); + + reg = (1<<13) | (1<<9) | (1<<5) | (1<<1); + writel(reg, CLK_RST_CONTROLLER_RST_CPU_CMPLX_CLR); + + smp_wmb(); + flush_cache_all(); + + /* unhalt the cpu */ + writel(0, IO_ADDRESS(TEGRA_FLOW_CTRL_BASE) + 0x14); + + timeout = jiffies + (1 * HZ); + while (time_before(jiffies, timeout)) { + if (readl(EVP_CPU_RESET_VECTOR) != boot_vector) + break; + udelay(10); + } + + /* put the old boot vector back */ + writel(old_boot_vector, EVP_CPU_RESET_VECTOR); + + /* + * now the secondary core is starting up let it run its + * calibrations, then wait for it to finish + */ + spin_unlock(&boot_lock); + + return 0; +} + +/* + * Initialise the CPU possible map early - this describes the CPUs + * which may be present or become present in the system. + */ +void __init smp_init_cpus(void) +{ + unsigned int i, ncores = scu_get_core_count(scu_base); + + for (i = 0; i < ncores; i++) + cpu_set(i, cpu_possible_map); +} + +void __init smp_prepare_cpus(unsigned int max_cpus) +{ + unsigned int ncores = scu_get_core_count(scu_base); + unsigned int cpu = smp_processor_id(); + int i; + + smp_store_cpu_info(cpu); + + /* + * are we trying to boot more cores than exist? + */ + if (max_cpus > ncores) + max_cpus = ncores; + + /* + * Initialise the present map, which describes the set of CPUs + * actually populated at the present time. + */ + for (i = 0; i < max_cpus; i++) + set_cpu_present(i, true); + + /* + * Initialise the SCU if there are more than one CPU and let + * them know where to start. Note that, on modern versions of + * MILO, the "poke" doesn't actually do anything until each + * individual core is sent a soft interrupt to get it out of + * WFI + */ + if (max_cpus > 1) { + percpu_timer_setup(); + scu_enable(scu_base); + } +} diff --git a/arch/arm/mach-tegra/tegra2_clocks.c b/arch/arm/mach-tegra/tegra2_clocks.c new file mode 100644 index 00000000000..ae3b308e22a --- /dev/null +++ b/arch/arm/mach-tegra/tegra2_clocks.c @@ -0,0 +1,1843 @@ +/* + * arch/arm/mach-tegra/tegra2_clocks.c + * + * Copyright (C) 2010 Google, Inc. + * + * Author: + * Colin Cross <ccross@google.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/list.h> +#include <linux/spinlock.h> +#include <linux/delay.h> +#include <linux/io.h> +#include <linux/hrtimer.h> + +#include <asm/clkdev.h> + +#include <mach/iomap.h> + +#include "clock.h" +#include "fuse.h" +#include "tegra2_dvfs.h" + +#define RST_DEVICES 0x004 +#define RST_DEVICES_SET 0x300 +#define RST_DEVICES_CLR 0x304 +#define RST_DEVICES_NUM 3 + +#define CLK_OUT_ENB 0x010 +#define CLK_OUT_ENB_SET 0x320 +#define CLK_OUT_ENB_CLR 0x324 +#define CLK_OUT_ENB_NUM 3 + +#define CLK_MASK_ARM 0x44 +#define MISC_CLK_ENB 0x48 + +#define OSC_CTRL 0x50 +#define OSC_CTRL_OSC_FREQ_MASK (3<<30) +#define OSC_CTRL_OSC_FREQ_13MHZ (0<<30) +#define OSC_CTRL_OSC_FREQ_19_2MHZ (1<<30) +#define OSC_CTRL_OSC_FREQ_12MHZ (2<<30) +#define OSC_CTRL_OSC_FREQ_26MHZ (3<<30) +#define OSC_CTRL_MASK 0x3f2 + +#define OSC_FREQ_DET 0x58 +#define OSC_FREQ_DET_TRIG (1<<31) + +#define OSC_FREQ_DET_STATUS 0x5C +#define OSC_FREQ_DET_BUSY (1<<31) +#define OSC_FREQ_DET_CNT_MASK 0xFFFF + +#define PERIPH_CLK_SOURCE_I2S1 0x100 +#define PERIPH_CLK_SOURCE_EMC 0x19c +#define PERIPH_CLK_SOURCE_OSC 0x1fc +#define PERIPH_CLK_SOURCE_NUM \ + ((PERIPH_CLK_SOURCE_OSC - PERIPH_CLK_SOURCE_I2S1) / 4) + +#define PERIPH_CLK_SOURCE_MASK (3<<30) +#define PERIPH_CLK_SOURCE_SHIFT 30 +#define PERIPH_CLK_SOURCE_ENABLE (1<<28) +#define PERIPH_CLK_SOURCE_DIVU71_MASK 0xFF +#define PERIPH_CLK_SOURCE_DIVU16_MASK 0xFFFF +#define PERIPH_CLK_SOURCE_DIV_SHIFT 0 + +#define PLL_BASE 0x0 +#define PLL_BASE_BYPASS (1<<31) +#define PLL_BASE_ENABLE (1<<30) +#define PLL_BASE_REF_ENABLE (1<<29) +#define PLL_BASE_OVERRIDE (1<<28) +#define PLL_BASE_LOCK (1<<27) +#define PLL_BASE_DIVP_MASK (0x7<<20) +#define PLL_BASE_DIVP_SHIFT 20 +#define PLL_BASE_DIVN_MASK (0x3FF<<8) +#define PLL_BASE_DIVN_SHIFT 8 +#define PLL_BASE_DIVM_MASK (0x1F) +#define PLL_BASE_DIVM_SHIFT 0 + +#define PLL_OUT_RATIO_MASK (0xFF<<8) +#define PLL_OUT_RATIO_SHIFT 8 +#define PLL_OUT_OVERRIDE (1<<2) +#define PLL_OUT_CLKEN (1<<1) +#define PLL_OUT_RESET_DISABLE (1<<0) + +#define PLL_MISC(c) (((c)->flags & PLL_ALT_MISC_REG) ? 0x4 : 0xc) +#define PLL_MISC_LOCK_ENABLE(c) (((c)->flags & PLLU) ? (1<<22) : (1<<18)) + +#define PLL_MISC_DCCON_SHIFT 20 +#define PLL_MISC_CPCON_SHIFT 8 +#define PLL_MISC_CPCON_MASK (0xF<<PLL_MISC_CPCON_SHIFT) +#define PLL_MISC_LFCON_SHIFT 4 +#define PLL_MISC_LFCON_MASK (0xF<<PLL_MISC_LFCON_SHIFT) +#define PLL_MISC_VCOCON_SHIFT 0 +#define PLL_MISC_VCOCON_MASK (0xF<<PLL_MISC_VCOCON_SHIFT) + +#define PLLU_BASE_POST_DIV (1<<20) + +#define PLLD_MISC_CLKENABLE (1<<30) +#define PLLD_MISC_DIV_RST (1<<23) +#define PLLD_MISC_DCCON_SHIFT 12 + +#define PLLE_MISC_READY (1 << 15) + +#define PERIPH_CLK_TO_ENB_REG(c) ((c->clk_num / 32) * 4) +#define PERIPH_CLK_TO_ENB_SET_REG(c) ((c->clk_num / 32) * 8) +#define PERIPH_CLK_TO_ENB_BIT(c) (1 << (c->clk_num % 32)) + +#define SUPER_CLK_MUX 0x00 +#define SUPER_STATE_SHIFT 28 +#define SUPER_STATE_MASK (0xF << SUPER_STATE_SHIFT) +#define SUPER_STATE_STANDBY (0x0 << SUPER_STATE_SHIFT) +#define SUPER_STATE_IDLE (0x1 << SUPER_STATE_SHIFT) +#define SUPER_STATE_RUN (0x2 << SUPER_STATE_SHIFT) +#define SUPER_STATE_IRQ (0x3 << SUPER_STATE_SHIFT) +#define SUPER_STATE_FIQ (0x4 << SUPER_STATE_SHIFT) +#define SUPER_SOURCE_MASK 0xF +#define SUPER_FIQ_SOURCE_SHIFT 12 +#define SUPER_IRQ_SOURCE_SHIFT 8 +#define SUPER_RUN_SOURCE_SHIFT 4 +#define SUPER_IDLE_SOURCE_SHIFT 0 + +#define SUPER_CLK_DIVIDER 0x04 + +#define BUS_CLK_DISABLE (1<<3) +#define BUS_CLK_DIV_MASK 0x3 + +static void __iomem *reg_clk_base = IO_ADDRESS(TEGRA_CLK_RESET_BASE); + +#define clk_writel(value, reg) \ + __raw_writel(value, (u32)reg_clk_base + (reg)) +#define clk_readl(reg) \ + __raw_readl((u32)reg_clk_base + (reg)) + +unsigned long clk_measure_input_freq(void) +{ + u32 clock_autodetect; + clk_writel(OSC_FREQ_DET_TRIG | 1, OSC_FREQ_DET); + do {} while (clk_readl(OSC_FREQ_DET_STATUS) & OSC_FREQ_DET_BUSY); + clock_autodetect = clk_readl(OSC_FREQ_DET_STATUS); + if (clock_autodetect >= 732 - 3 && clock_autodetect <= 732 + 3) { + return 12000000; + } else if (clock_autodetect >= 794 - 3 && clock_autodetect <= 794 + 3) { + return 13000000; + } else if (clock_autodetect >= 1172 - 3 && clock_autodetect <= 1172 + 3) { + return 19200000; + } else if (clock_autodetect >= 1587 - 3 && clock_autodetect <= 1587 + 3) { + return 26000000; + } else { + pr_err("%s: Unexpected clock autodetect value %d", __func__, clock_autodetect); + BUG(); + return 0; + } +} + +static int clk_div71_get_divider(unsigned long parent_rate, unsigned long rate) +{ + s64 divider_u71 = parent_rate * 2; + divider_u71 += rate - 1; + do_div(divider_u71, rate); + + if (divider_u71 - 2 < 0) + return 0; + + if (divider_u71 - 2 > 255) + return -EINVAL; + + return divider_u71 - 2; +} + +static int clk_div16_get_divider(unsigned long parent_rate, unsigned long rate) +{ + s64 divider_u16; + + divider_u16 = parent_rate; + divider_u16 += rate - 1; + do_div(divider_u16, rate); + + if (divider_u16 - 1 < 0) + return 0; + + if (divider_u16 - 1 > 255) + return -EINVAL; + + return divider_u16 - 1; +} + +/* clk_m functions */ +static unsigned long tegra2_clk_m_autodetect_rate(struct clk *c) +{ + u32 auto_clock_control = clk_readl(OSC_CTRL) & ~OSC_CTRL_OSC_FREQ_MASK; + + c->rate = clk_measure_input_freq(); + switch (c->rate) { + case 12000000: + auto_clock_control |= OSC_CTRL_OSC_FREQ_12MHZ; + break; + case 13000000: + auto_clock_control |= OSC_CTRL_OSC_FREQ_13MHZ; + break; + case 19200000: + auto_clock_control |= OSC_CTRL_OSC_FREQ_19_2MHZ; + break; + case 26000000: + auto_clock_control |= OSC_CTRL_OSC_FREQ_26MHZ; + break; + default: + pr_err("%s: Unexpected clock rate %ld", __func__, c->rate); + BUG(); + } + clk_writel(auto_clock_control, OSC_CTRL); + return c->rate; +} + +static void tegra2_clk_m_init(struct clk *c) +{ + pr_debug("%s on clock %s\n", __func__, c->name); + tegra2_clk_m_autodetect_rate(c); +} + +static int tegra2_clk_m_enable(struct clk *c) +{ + pr_debug("%s on clock %s\n", __func__, c->name); + return 0; +} + +static void tegra2_clk_m_disable(struct clk *c) +{ + pr_debug("%s on clock %s\n", __func__, c->name); + BUG(); +} + +static struct clk_ops tegra_clk_m_ops = { + .init = tegra2_clk_m_init, + .enable = tegra2_clk_m_enable, + .disable = tegra2_clk_m_disable, +}; + +/* super clock functions */ +/* "super clocks" on tegra have two-stage muxes and a clock skipping + * super divider. We will ignore the clock skipping divider, since we + * can't lower the voltage when using the clock skip, but we can if we + * lower the PLL frequency. + */ +static void tegra2_super_clk_init(struct clk *c) +{ + u32 val; + int source; + int shift; + const struct clk_mux_sel *sel; + val = clk_readl(c->reg + SUPER_CLK_MUX); + c->state = ON; + BUG_ON(((val & SUPER_STATE_MASK) != SUPER_STATE_RUN) && + ((val & SUPER_STATE_MASK) != SUPER_STATE_IDLE)); + shift = ((val & SUPER_STATE_MASK) == SUPER_STATE_IDLE) ? + SUPER_IDLE_SOURCE_SHIFT : SUPER_RUN_SOURCE_SHIFT; + source = (val >> shift) & SUPER_SOURCE_MASK; + for (sel = c->inputs; sel->input != NULL; sel++) { + if (sel->value == source) + break; + } + BUG_ON(sel->input == NULL); + c->parent = sel->input; +} + +static int tegra2_super_clk_enable(struct clk *c) +{ + clk_writel(0, c->reg + SUPER_CLK_DIVIDER); + return 0; +} + +static void tegra2_super_clk_disable(struct clk *c) +{ + pr_debug("%s on clock %s\n", __func__, c->name); + + /* oops - don't disable the CPU clock! */ + BUG(); +} + +static int tegra2_super_clk_set_parent(struct clk *c, struct clk *p) +{ + u32 val; + const struct clk_mux_sel *sel; + int shift; + + val = clk_readl(c->reg + SUPER_CLK_MUX);; + BUG_ON(((val & SUPER_STATE_MASK) != SUPER_STATE_RUN) && + ((val & SUPER_STATE_MASK) != SUPER_STATE_IDLE)); + shift = ((val & SUPER_STATE_MASK) == SUPER_STATE_IDLE) ? + SUPER_IDLE_SOURCE_SHIFT : SUPER_RUN_SOURCE_SHIFT; + for (sel = c->inputs; sel->input != NULL; sel++) { + if (sel->input == p) { + val &= ~(SUPER_SOURCE_MASK << shift); + val |= sel->value << shift; + + if (c->refcnt) + clk_enable_locked(p); + + clk_writel(val, c->reg); + + if (c->refcnt && c->parent) + clk_disable_locked(c->parent); + + clk_reparent(c, p); + return 0; + } + } + return -EINVAL; +} + +static struct clk_ops tegra_super_ops = { + .init = tegra2_super_clk_init, + .enable = tegra2_super_clk_enable, + .disable = tegra2_super_clk_disable, + .set_parent = tegra2_super_clk_set_parent, +}; + +/* virtual cpu clock functions */ +/* some clocks can not be stopped (cpu, memory bus) while the SoC is running. + To change the frequency of these clocks, the parent pll may need to be + reprogrammed, so the clock must be moved off the pll, the pll reprogrammed, + and then the clock moved back to the pll. To hide this sequence, a virtual + clock handles it. + */ +static void tegra2_cpu_clk_init(struct clk *c) +{ +} + +static int tegra2_cpu_clk_enable(struct clk *c) +{ + return 0; +} + +static void tegra2_cpu_clk_disable(struct clk *c) +{ + pr_debug("%s on clock %s\n", __func__, c->name); + + /* oops - don't disable the CPU clock! */ + BUG(); +} + +static int tegra2_cpu_clk_set_rate(struct clk *c, unsigned long rate) +{ + int ret; + ret = clk_set_parent_locked(c->parent, c->backup); + if (ret) { + pr_err("Failed to switch cpu to clock %s\n", c->backup->name); + return ret; + } + + ret = clk_set_rate_locked(c->main, rate); + if (ret) { + pr_err("Failed to change cpu pll to %lu\n", rate); + return ret; + } + + ret = clk_set_parent_locked(c->parent, c->main); + if (ret) { + pr_err("Failed to switch cpu to clock %s\n", c->main->name); + return ret; + } + + return 0; +} + +static struct clk_ops tegra_cpu_ops = { + .init = tegra2_cpu_clk_init, + .enable = tegra2_cpu_clk_enable, + .disable = tegra2_cpu_clk_disable, + .set_rate = tegra2_cpu_clk_set_rate, +}; + +/* bus clock functions */ +static void tegra2_bus_clk_init(struct clk *c) +{ + u32 val = clk_readl(c->reg); + c->state = ((val >> c->reg_shift) & BUS_CLK_DISABLE) ? OFF : ON; + c->div = ((val >> c->reg_shift) & BUS_CLK_DIV_MASK) + 1; + c->mul = 1; +} + +static int tegra2_bus_clk_enable(struct clk *c) +{ + u32 val = clk_readl(c->reg); + val &= ~(BUS_CLK_DISABLE << c->reg_shift); + clk_writel(val, c->reg); + return 0; +} + +static void tegra2_bus_clk_disable(struct clk *c) +{ + u32 val = clk_readl(c->reg); + val |= BUS_CLK_DISABLE << c->reg_shift; + clk_writel(val, c->reg); +} + +static int tegra2_bus_clk_set_rate(struct clk *c, unsigned long rate) +{ + u32 val = clk_readl(c->reg); + unsigned long parent_rate = c->parent->rate; + int i; + for (i = 1; i <= 4; i++) { + if (rate == parent_rate / i) { + val &= ~(BUS_CLK_DIV_MASK << c->reg_shift); + val |= (i - 1) << c->reg_shift; + clk_writel(val, c->reg); + c->div = i; + c->mul = 1; + return 0; + } + } + return -EINVAL; +} + +static struct clk_ops tegra_bus_ops = { + .init = tegra2_bus_clk_init, + .enable = tegra2_bus_clk_enable, + .disable = tegra2_bus_clk_disable, + .set_rate = tegra2_bus_clk_set_rate, +}; + +/* PLL Functions */ +static int tegra2_pll_clk_wait_for_lock(struct clk *c) +{ + ktime_t before; + + before = ktime_get(); + + while (!(clk_readl(c->reg + PLL_BASE) & PLL_BASE_LOCK)) { + if (ktime_us_delta(ktime_get(), before) > 5000) { + pr_err("Timed out waiting for lock bit on pll %s", + c->name); + return -1; + } + } + + return 0; +} + +static void tegra2_pll_clk_init(struct clk *c) +{ + u32 val = clk_readl(c->reg + PLL_BASE); + + c->state = (val & PLL_BASE_ENABLE) ? ON : OFF; + + if (c->flags & PLL_FIXED && !(val & PLL_BASE_OVERRIDE)) { + pr_warning("Clock %s has unknown fixed frequency\n", c->name); + c->mul = 1; + c->div = 1; + } else if (val & PLL_BASE_BYPASS) { + c->mul = 1; + c->div = 1; + } else { + c->mul = (val & PLL_BASE_DIVN_MASK) >> PLL_BASE_DIVN_SHIFT; + c->div = (val & PLL_BASE_DIVM_MASK) >> PLL_BASE_DIVM_SHIFT; + if (c->flags & PLLU) + c->div *= (val & PLLU_BASE_POST_DIV) ? 1 : 2; + else + c->div *= (val & PLL_BASE_DIVP_MASK) ? 2 : 1; + } +} + +static int tegra2_pll_clk_enable(struct clk *c) +{ + u32 val; + pr_debug("%s on clock %s\n", __func__, c->name); + + val = clk_readl(c->reg + PLL_BASE); + val &= ~PLL_BASE_BYPASS; + val |= PLL_BASE_ENABLE; + clk_writel(val, c->reg + PLL_BASE); + + val = clk_readl(c->reg + PLL_MISC(c)); + val |= PLL_MISC_LOCK_ENABLE(c); + clk_writel(val, c->reg + PLL_MISC(c)); + + tegra2_pll_clk_wait_for_lock(c); + + return 0; +} + +static void tegra2_pll_clk_disable(struct clk *c) +{ + u32 val; + pr_debug("%s on clock %s\n", __func__, c->name); + + val = clk_readl(c->reg); + val &= ~(PLL_BASE_BYPASS | PLL_BASE_ENABLE); + clk_writel(val, c->reg); +} + +static int tegra2_pll_clk_set_rate(struct clk *c, unsigned long rate) +{ + u32 val; + unsigned long input_rate; + const struct clk_pll_table *sel; + + pr_debug("%s: %s %lu\n", __func__, c->name, rate); + BUG_ON(c->refcnt != 0); + + input_rate = c->parent->rate; + for (sel = c->pll_table; sel->input_rate != 0; sel++) { + if (sel->input_rate == input_rate && sel->output_rate == rate) { + c->mul = sel->n; + c->div = sel->m * sel->p; + + val = clk_readl(c->reg + PLL_BASE); + if (c->flags & PLL_FIXED) + val |= PLL_BASE_OVERRIDE; + val &= ~(PLL_BASE_DIVP_MASK | PLL_BASE_DIVN_MASK | + PLL_BASE_DIVM_MASK); + val |= (sel->m << PLL_BASE_DIVM_SHIFT) | + (sel->n << PLL_BASE_DIVN_SHIFT); + BUG_ON(sel->p < 1 || sel->p > 2); + if (c->flags & PLLU) { + if (sel->p == 1) + val |= PLLU_BASE_POST_DIV; + } else { + if (sel->p == 2) + val |= 1 << PLL_BASE_DIVP_SHIFT; + } + clk_writel(val, c->reg + PLL_BASE); + + if (c->flags & PLL_HAS_CPCON) { + val = clk_readl(c->reg + PLL_MISC(c)); + val &= ~PLL_MISC_CPCON_MASK; + val |= sel->cpcon << PLL_MISC_CPCON_SHIFT; + clk_writel(val, c->reg + PLL_MISC(c)); + } + + if (c->state == ON) + tegra2_pll_clk_enable(c); + + return 0; + } + } + return -EINVAL; +} + +static struct clk_ops tegra_pll_ops = { + .init = tegra2_pll_clk_init, + .enable = tegra2_pll_clk_enable, + .disable = tegra2_pll_clk_disable, + .set_rate = tegra2_pll_clk_set_rate, +}; + +static void tegra2_pllx_clk_init(struct clk *c) +{ + tegra2_pll_clk_init(c); + + if (tegra_sku_id() == 7) + c->max_rate = 750000000; +} + +static struct clk_ops tegra_pllx_ops = { + .init = tegra2_pllx_clk_init, + .enable = tegra2_pll_clk_enable, + .disable = tegra2_pll_clk_disable, + .set_rate = tegra2_pll_clk_set_rate, +}; + +static int tegra2_plle_clk_enable(struct clk *c) +{ + u32 val; + + pr_debug("%s on clock %s\n", __func__, c->name); + + mdelay(1); + + val = clk_readl(c->reg + PLL_BASE); + if (!(val & PLLE_MISC_READY)) + return -EBUSY; + + val = clk_readl(c->reg + PLL_BASE); + val |= PLL_BASE_ENABLE | PLL_BASE_BYPASS; + clk_writel(val, c->reg + PLL_BASE); + + return 0; +} + +static struct clk_ops tegra_plle_ops = { + .init = tegra2_pll_clk_init, + .enable = tegra2_plle_clk_enable, + .set_rate = tegra2_pll_clk_set_rate, +}; + +/* Clock divider ops */ +static void tegra2_pll_div_clk_init(struct clk *c) +{ + u32 val = clk_readl(c->reg); + u32 divu71; + val >>= c->reg_shift; + c->state = (val & PLL_OUT_CLKEN) ? ON : OFF; + if (!(val & PLL_OUT_RESET_DISABLE)) + c->state = OFF; + + if (c->flags & DIV_U71) { + divu71 = (val & PLL_OUT_RATIO_MASK) >> PLL_OUT_RATIO_SHIFT; + c->div = (divu71 + 2); + c->mul = 2; + } else if (c->flags & DIV_2) { + c->div = 2; + c->mul = 1; + } else { + c->div = 1; + c->mul = 1; + } +} + +static int tegra2_pll_div_clk_enable(struct clk *c) +{ + u32 val; + u32 new_val; + + pr_debug("%s: %s\n", __func__, c->name); + if (c->flags & DIV_U71) { + val = clk_readl(c->reg); + new_val = val >> c->reg_shift; + new_val &= 0xFFFF; + + new_val |= PLL_OUT_CLKEN | PLL_OUT_RESET_DISABLE; + + val &= ~(0xFFFF << c->reg_shift); + val |= new_val << c->reg_shift; + clk_writel(val, c->reg); + return 0; + } else if (c->flags & DIV_2) { + BUG_ON(!(c->flags & PLLD)); + val = clk_readl(c->reg); + val &= ~PLLD_MISC_DIV_RST; + clk_writel(val, c->reg); + return 0; + } + return -EINVAL; +} + +static void tegra2_pll_div_clk_disable(struct clk *c) +{ + u32 val; + u32 new_val; + + pr_debug("%s: %s\n", __func__, c->name); + if (c->flags & DIV_U71) { + val = clk_readl(c->reg); + new_val = val >> c->reg_shift; + new_val &= 0xFFFF; + + new_val &= ~(PLL_OUT_CLKEN | PLL_OUT_RESET_DISABLE); + + val &= ~(0xFFFF << c->reg_shift); + val |= new_val << c->reg_shift; + clk_writel(val, c->reg); + } else if (c->flags & DIV_2) { + BUG_ON(!(c->flags & PLLD)); + val = clk_readl(c->reg); + val |= PLLD_MISC_DIV_RST; + clk_writel(val, c->reg); + } +} + +static int tegra2_pll_div_clk_set_rate(struct clk *c, unsigned long rate) +{ + u32 val; + u32 new_val; + int divider_u71; + pr_debug("%s: %s %lu\n", __func__, c->name, rate); + if (c->flags & DIV_U71) { + divider_u71 = clk_div71_get_divider(c->parent->rate, rate); + if (divider_u71 >= 0) { + val = clk_readl(c->reg); + new_val = val >> c->reg_shift; + new_val &= 0xFFFF; + if (c->flags & DIV_U71_FIXED) + new_val |= PLL_OUT_OVERRIDE; + new_val &= ~PLL_OUT_RATIO_MASK; + new_val |= divider_u71 << PLL_OUT_RATIO_SHIFT; + + val &= ~(0xFFFF << c->reg_shift); + val |= new_val << c->reg_shift; + clk_writel(val, c->reg); + c->div = divider_u71 + 2; + c->mul = 2; + return 0; + } + } else if (c->flags & DIV_2) { + if (c->parent->rate == rate * 2) + return 0; + } + return -EINVAL; +} + +static long tegra2_pll_div_clk_round_rate(struct clk *c, unsigned long rate) +{ + int divider; + pr_debug("%s: %s %lu\n", __func__, c->name, rate); + + if (c->flags & DIV_U71) { + divider = clk_div71_get_divider(c->parent->rate, rate); + if (divider < 0) + return divider; + return c->parent->rate * 2 / (divider + 2); + } else if (c->flags & DIV_2) { + return c->parent->rate / 2; + } + return -EINVAL; +} + +static struct clk_ops tegra_pll_div_ops = { + .init = tegra2_pll_div_clk_init, + .enable = tegra2_pll_div_clk_enable, + .disable = tegra2_pll_div_clk_disable, + .set_rate = tegra2_pll_div_clk_set_rate, + .round_rate = tegra2_pll_div_clk_round_rate, +}; + +/* Periph clk ops */ + +static void tegra2_periph_clk_init(struct clk *c) +{ + u32 val = clk_readl(c->reg); + const struct clk_mux_sel *mux = 0; + const struct clk_mux_sel *sel; + if (c->flags & MUX) { + for (sel = c->inputs; sel->input != NULL; sel++) { + if (val >> PERIPH_CLK_SOURCE_SHIFT == sel->value) + mux = sel; + } + BUG_ON(!mux); + + c->parent = mux->input; + } else { + c->parent = c->inputs[0].input; + } + + if (c->flags & DIV_U71) { + u32 divu71 = val & PERIPH_CLK_SOURCE_DIVU71_MASK; + c->div = divu71 + 2; + c->mul = 2; + } else if (c->flags & DIV_U16) { + u32 divu16 = val & PERIPH_CLK_SOURCE_DIVU16_MASK; + c->div = divu16 + 1; + c->mul = 1; + } else { + c->div = 1; + c->mul = 1; + } + + c->state = ON; + if (!(clk_readl(CLK_OUT_ENB + PERIPH_CLK_TO_ENB_REG(c)) & + PERIPH_CLK_TO_ENB_BIT(c))) + c->state = OFF; + if (!(c->flags & PERIPH_NO_RESET)) + if (clk_readl(RST_DEVICES + PERIPH_CLK_TO_ENB_REG(c)) & + PERIPH_CLK_TO_ENB_BIT(c)) + c->state = OFF; +} + +static int tegra2_periph_clk_enable(struct clk *c) +{ + u32 val; + pr_debug("%s on clock %s\n", __func__, c->name); + + clk_writel(PERIPH_CLK_TO_ENB_BIT(c), + CLK_OUT_ENB_SET + PERIPH_CLK_TO_ENB_SET_REG(c)); + if (!(c->flags & PERIPH_NO_RESET) && !(c->flags & PERIPH_MANUAL_RESET)) + clk_writel(PERIPH_CLK_TO_ENB_BIT(c), + RST_DEVICES_CLR + PERIPH_CLK_TO_ENB_SET_REG(c)); + if (c->flags & PERIPH_EMC_ENB) { + /* The EMC peripheral clock has 2 extra enable bits */ + /* FIXME: Do they need to be disabled? */ + val = clk_readl(c->reg); + val |= 0x3 << 24; + clk_writel(val, c->reg); + } + return 0; +} + +static void tegra2_periph_clk_disable(struct clk *c) +{ + pr_debug("%s on clock %s\n", __func__, c->name); + + clk_writel(PERIPH_CLK_TO_ENB_BIT(c), + CLK_OUT_ENB_CLR + PERIPH_CLK_TO_ENB_SET_REG(c)); +} + +void tegra2_periph_reset_deassert(struct clk *c) +{ + pr_debug("%s on clock %s\n", __func__, c->name); + if (!(c->flags & PERIPH_NO_RESET)) + clk_writel(PERIPH_CLK_TO_ENB_BIT(c), + RST_DEVICES_CLR + PERIPH_CLK_TO_ENB_SET_REG(c)); +} + +void tegra2_periph_reset_assert(struct clk *c) +{ + pr_debug("%s on clock %s\n", __func__, c->name); + if (!(c->flags & PERIPH_NO_RESET)) + clk_writel(PERIPH_CLK_TO_ENB_BIT(c), + RST_DEVICES_SET + PERIPH_CLK_TO_ENB_SET_REG(c)); +} + + +static int tegra2_periph_clk_set_parent(struct clk *c, struct clk *p) +{ + u32 val; + const struct clk_mux_sel *sel; + pr_debug("%s: %s %s\n", __func__, c->name, p->name); + for (sel = c->inputs; sel->input != NULL; sel++) { + if (sel->input == p) { + val = clk_readl(c->reg); + val &= ~PERIPH_CLK_SOURCE_MASK; + val |= (sel->value) << PERIPH_CLK_SOURCE_SHIFT; + + if (c->refcnt) + clk_enable_locked(p); + + clk_writel(val, c->reg); + + if (c->refcnt && c->parent) + clk_disable_locked(c->parent); + + clk_reparent(c, p); + return 0; + } + } + + return -EINVAL; +} + +static int tegra2_periph_clk_set_rate(struct clk *c, unsigned long rate) +{ + u32 val; + int divider; + pr_debug("%s: %lu\n", __func__, rate); + if (c->flags & DIV_U71) { + divider = clk_div71_get_divider(c->parent->rate, rate); + if (divider >= 0) { + val = clk_readl(c->reg); + val &= ~PERIPH_CLK_SOURCE_DIVU71_MASK; + val |= divider; + clk_writel(val, c->reg); + c->div = divider + 2; + c->mul = 2; + return 0; + } + } else if (c->flags & DIV_U16) { + divider = clk_div16_get_divider(c->parent->rate, rate); + if (divider >= 0) { + val = clk_readl(c->reg); + val &= ~PERIPH_CLK_SOURCE_DIVU16_MASK; + val |= divider; + clk_writel(val, c->reg); + c->div = divider + 1; + c->mul = 1; + return 0; + } + } else if (c->parent->rate <= rate) { + c->div = 1; + c->mul = 1; + return 0; + } + return -EINVAL; +} + +static long tegra2_periph_clk_round_rate(struct clk *c, + unsigned long rate) +{ + int divider; + pr_debug("%s: %s %lu\n", __func__, c->name, rate); + + if (c->flags & DIV_U71) { + divider = clk_div71_get_divider(c->parent->rate, rate); + if (divider < 0) + return divider; + + return c->parent->rate * 2 / (divider + 2); + } else if (c->flags & DIV_U16) { + divider = clk_div16_get_divider(c->parent->rate, rate); + if (divider < 0) + return divider; + return c->parent->rate / (divider + 1); + } + return -EINVAL; +} + +static struct clk_ops tegra_periph_clk_ops = { + .init = &tegra2_periph_clk_init, + .enable = &tegra2_periph_clk_enable, + .disable = &tegra2_periph_clk_disable, + .set_parent = &tegra2_periph_clk_set_parent, + .set_rate = &tegra2_periph_clk_set_rate, + .round_rate = &tegra2_periph_clk_round_rate, +}; + +/* Clock doubler ops */ +static void tegra2_clk_double_init(struct clk *c) +{ + c->mul = 2; + c->div = 1; + c->state = ON; + if (!(clk_readl(CLK_OUT_ENB + PERIPH_CLK_TO_ENB_REG(c)) & + PERIPH_CLK_TO_ENB_BIT(c))) + c->state = OFF; +}; + +static int tegra2_clk_double_set_rate(struct clk *c, unsigned long rate) +{ + if (rate != 2 * c->parent->rate) + return -EINVAL; + c->mul = 2; + c->div = 1; + return 0; +} + +static struct clk_ops tegra_clk_double_ops = { + .init = &tegra2_clk_double_init, + .enable = &tegra2_periph_clk_enable, + .disable = &tegra2_periph_clk_disable, + .set_rate = &tegra2_clk_double_set_rate, +}; + +static void tegra2_audio_sync_clk_init(struct clk *c) +{ + int source; + const struct clk_mux_sel *sel; + u32 val = clk_readl(c->reg); + c->state = (val & (1<<4)) ? OFF : ON; + source = val & 0xf; + for (sel = c->inputs; sel->input != NULL; sel++) + if (sel->value == source) + break; + BUG_ON(sel->input == NULL); + c->parent = sel->input; +} + +static int tegra2_audio_sync_clk_enable(struct clk *c) +{ + clk_writel(0, c->reg); + return 0; +} + +static void tegra2_audio_sync_clk_disable(struct clk *c) +{ + clk_writel(1, c->reg); +} + +static int tegra2_audio_sync_clk_set_parent(struct clk *c, struct clk *p) +{ + u32 val; + const struct clk_mux_sel *sel; + for (sel = c->inputs; sel->input != NULL; sel++) { + if (sel->input == p) { + val = clk_readl(c->reg); + val &= ~0xf; + val |= sel->value; + + if (c->refcnt) + clk_enable_locked(p); + + clk_writel(val, c->reg); + + if (c->refcnt && c->parent) + clk_disable_locked(c->parent); + + clk_reparent(c, p); + return 0; + } + } + + return -EINVAL; +} + +static int tegra2_audio_sync_clk_set_rate(struct clk *c, unsigned long rate) +{ + unsigned long parent_rate; + if (!c->parent) { + pr_err("%s: clock has no parent\n", __func__); + return -EINVAL; + } + parent_rate = c->parent->rate; + if (rate != parent_rate) { + pr_err("%s: %s/%ld differs from parent %s/%ld\n", + __func__, + c->name, rate, + c->parent->name, parent_rate); + return -EINVAL; + } + c->rate = parent_rate; + return 0; +} + +static struct clk_ops tegra_audio_sync_clk_ops = { + .init = tegra2_audio_sync_clk_init, + .enable = tegra2_audio_sync_clk_enable, + .disable = tegra2_audio_sync_clk_disable, + .set_rate = tegra2_audio_sync_clk_set_rate, + .set_parent = tegra2_audio_sync_clk_set_parent, +}; + +/* Clock definitions */ +static struct clk tegra_clk_32k = { + .name = "clk_32k", + .rate = 32768, + .ops = NULL, + .max_rate = 32768, +}; + +static struct clk_pll_table tegra_pll_s_table[] = { + {32768, 12000000, 366, 1, 1, 0}, + {32768, 13000000, 397, 1, 1, 0}, + {32768, 19200000, 586, 1, 1, 0}, + {32768, 26000000, 793, 1, 1, 0}, + {0, 0, 0, 0, 0, 0}, +}; + +static struct clk tegra_pll_s = { + .name = "pll_s", + .flags = PLL_ALT_MISC_REG, + .ops = &tegra_pll_ops, + .reg = 0xf0, + .input_min = 32768, + .input_max = 32768, + .parent = &tegra_clk_32k, + .cf_min = 0, /* FIXME */ + .cf_max = 0, /* FIXME */ + .vco_min = 12000000, + .vco_max = 26000000, + .pll_table = tegra_pll_s_table, + .max_rate = 26000000, +}; + +static struct clk_mux_sel tegra_clk_m_sel[] = { + { .input = &tegra_clk_32k, .value = 0}, + { .input = &tegra_pll_s, .value = 1}, + { 0, 0}, +}; +static struct clk tegra_clk_m = { + .name = "clk_m", + .flags = ENABLE_ON_INIT, + .ops = &tegra_clk_m_ops, + .inputs = tegra_clk_m_sel, + .reg = 0x1fc, + .reg_mask = (1<<28), + .reg_shift = 28, + .max_rate = 26000000, +}; + +static struct clk_pll_table tegra_pll_c_table[] = { + { 0, 0, 0, 0, 0, 0 }, +}; + +static struct clk tegra_pll_c = { + .name = "pll_c", + .flags = PLL_HAS_CPCON, + .ops = &tegra_pll_ops, + .reg = 0x80, + .input_min = 2000000, + .input_max = 31000000, + .parent = &tegra_clk_m, + .cf_min = 1000000, + .cf_max = 6000000, + .vco_min = 20000000, + .vco_max = 1400000000, + .pll_table = tegra_pll_c_table, + .max_rate = 600000000, +}; + +static struct clk tegra_pll_c_out1 = { + .name = "pll_c_out1", + .ops = &tegra_pll_div_ops, + .flags = DIV_U71, + .parent = &tegra_pll_c, + .reg = 0x84, + .reg_shift = 0, + .max_rate = 600000000, +}; + +static struct clk_pll_table tegra_pll_m_table[] = { + { 12000000, 666000000, 666, 12, 1, 8}, + { 13000000, 666000000, 666, 13, 1, 8}, + { 19200000, 666000000, 555, 16, 1, 8}, + { 26000000, 666000000, 666, 26, 1, 8}, + { 12000000, 600000000, 600, 12, 1, 8}, + { 13000000, 600000000, 600, 13, 1, 8}, + { 19200000, 600000000, 375, 12, 1, 6}, + { 26000000, 600000000, 600, 26, 1, 8}, + { 0, 0, 0, 0, 0, 0 }, +}; + +static struct clk tegra_pll_m = { + .name = "pll_m", + .flags = PLL_HAS_CPCON, + .ops = &tegra_pll_ops, + .reg = 0x90, + .input_min = 2000000, + .input_max = 31000000, + .parent = &tegra_clk_m, + .cf_min = 1000000, + .cf_max = 6000000, + .vco_min = 20000000, + .vco_max = 1200000000, + .pll_table = tegra_pll_m_table, + .max_rate = 800000000, +}; + +static struct clk tegra_pll_m_out1 = { + .name = "pll_m_out1", + .ops = &tegra_pll_div_ops, + .flags = DIV_U71, + .parent = &tegra_pll_m, + .reg = 0x94, + .reg_shift = 0, + .max_rate = 600000000, +}; + +static struct clk_pll_table tegra_pll_p_table[] = { + { 12000000, 216000000, 432, 12, 2, 8}, + { 13000000, 216000000, 432, 13, 2, 8}, + { 19200000, 216000000, 90, 4, 2, 1}, + { 26000000, 216000000, 432, 26, 2, 8}, + { 12000000, 432000000, 432, 12, 1, 8}, + { 13000000, 432000000, 432, 13, 1, 8}, + { 19200000, 432000000, 90, 4, 1, 1}, + { 26000000, 432000000, 432, 26, 1, 8}, + { 0, 0, 0, 0, 0, 0 }, +}; + +static struct clk tegra_pll_p = { + .name = "pll_p", + .flags = ENABLE_ON_INIT | PLL_FIXED | PLL_HAS_CPCON, + .ops = &tegra_pll_ops, + .reg = 0xa0, + .input_min = 2000000, + .input_max = 31000000, + .parent = &tegra_clk_m, + .cf_min = 1000000, + .cf_max = 6000000, + .vco_min = 20000000, + .vco_max = 1400000000, + .pll_table = tegra_pll_p_table, + .max_rate = 432000000, +}; + +static struct clk tegra_pll_p_out1 = { + .name = "pll_p_out1", + .ops = &tegra_pll_div_ops, + .flags = ENABLE_ON_INIT | DIV_U71 | DIV_U71_FIXED, + .parent = &tegra_pll_p, + .reg = 0xa4, + .reg_shift = 0, + .max_rate = 432000000, +}; + +static struct clk tegra_pll_p_out2 = { + .name = "pll_p_out2", + .ops = &tegra_pll_div_ops, + .flags = ENABLE_ON_INIT | DIV_U71 | DIV_U71_FIXED, + .parent = &tegra_pll_p, + .reg = 0xa4, + .reg_shift = 16, + .max_rate = 432000000, +}; + +static struct clk tegra_pll_p_out3 = { + .name = "pll_p_out3", + .ops = &tegra_pll_div_ops, + .flags = ENABLE_ON_INIT | DIV_U71 | DIV_U71_FIXED, + .parent = &tegra_pll_p, + .reg = 0xa8, + .reg_shift = 0, + .max_rate = 432000000, +}; + +static struct clk tegra_pll_p_out4 = { + .name = "pll_p_out4", + .ops = &tegra_pll_div_ops, + .flags = ENABLE_ON_INIT | DIV_U71 | DIV_U71_FIXED, + .parent = &tegra_pll_p, + .reg = 0xa8, + .reg_shift = 16, + .max_rate = 432000000, +}; + +static struct clk_pll_table tegra_pll_a_table[] = { + { 28800000, 56448000, 49, 25, 1, 1}, + { 28800000, 73728000, 64, 25, 1, 1}, + { 28800000, 11289600, 49, 25, 1, 1}, + { 28800000, 12288000, 64, 25, 1, 1}, + { 28800000, 24000000, 5, 6, 1, 1}, + { 0, 0, 0, 0, 0, 0 }, +}; + +static struct clk tegra_pll_a = { + .name = "pll_a", + .flags = PLL_HAS_CPCON, + .ops = &tegra_pll_ops, + .reg = 0xb0, + .input_min = 2000000, + .input_max = 31000000, + .parent = &tegra_pll_p_out1, + .cf_min = 1000000, + .cf_max = 6000000, + .vco_min = 20000000, + .vco_max = 1400000000, + .pll_table = tegra_pll_a_table, + .max_rate = 56448000, +}; + +static struct clk tegra_pll_a_out0 = { + .name = "pll_a_out0", + .ops = &tegra_pll_div_ops, + .flags = DIV_U71, + .parent = &tegra_pll_a, + .reg = 0xb4, + .reg_shift = 0, + .max_rate = 56448000, +}; + +static struct clk_pll_table tegra_pll_d_table[] = { + { 12000000, 1000000000, 1000, 12, 1, 12}, + { 13000000, 1000000000, 1000, 13, 1, 12}, + { 19200000, 1000000000, 625, 12, 1, 8}, + { 26000000, 1000000000, 1000, 26, 1, 12}, + { 0, 0, 0, 0, 0, 0 }, +}; + +static struct clk tegra_pll_d = { + .name = "pll_d", + .flags = PLL_HAS_CPCON | PLLD, + .ops = &tegra_pll_ops, + .reg = 0xd0, + .input_min = 2000000, + .input_max = 40000000, + .parent = &tegra_clk_m, + .cf_min = 1000000, + .cf_max = 6000000, + .vco_min = 40000000, + .vco_max = 1000000000, + .pll_table = tegra_pll_d_table, + .max_rate = 1000000000, +}; + +static struct clk tegra_pll_d_out0 = { + .name = "pll_d_out0", + .ops = &tegra_pll_div_ops, + .flags = DIV_2 | PLLD, + .parent = &tegra_pll_d, + .max_rate = 500000000, +}; + +static struct clk_pll_table tegra_pll_u_table[] = { + { 12000000, 480000000, 960, 12, 2, 0}, + { 13000000, 480000000, 960, 13, 2, 0}, + { 19200000, 480000000, 200, 4, 2, 0}, + { 26000000, 480000000, 960, 26, 2, 0}, + { 0, 0, 0, 0, 0, 0 }, +}; + +static struct clk tegra_pll_u = { + .name = "pll_u", + .flags = PLLU, + .ops = &tegra_pll_ops, + .reg = 0xc0, + .input_min = 2000000, + .input_max = 40000000, + .parent = &tegra_clk_m, + .cf_min = 1000000, + .cf_max = 6000000, + .vco_min = 480000000, + .vco_max = 960000000, + .pll_table = tegra_pll_u_table, + .max_rate = 480000000, +}; + +static struct clk_pll_table tegra_pll_x_table[] = { + /* 1 GHz */ + { 12000000, 1000000000, 1000, 12, 1, 12}, + { 13000000, 1000000000, 1000, 13, 1, 12}, + { 19200000, 1000000000, 625, 12, 1, 8}, + { 26000000, 1000000000, 1000, 26, 1, 12}, + + /* 912 MHz */ + { 12000000, 912000000, 912, 12, 1, 12}, + { 13000000, 912000000, 912, 13, 1, 12}, + { 19200000, 912000000, 760, 16, 1, 8}, + { 26000000, 912000000, 912, 26, 1, 12}, + + /* 816 MHz */ + { 12000000, 816000000, 816, 12, 1, 12}, + { 13000000, 816000000, 816, 13, 1, 12}, + { 19200000, 816000000, 680, 16, 1, 8}, + { 26000000, 816000000, 816, 26, 1, 12}, + + /* 760 MHz */ + { 12000000, 760000000, 760, 12, 1, 12}, + { 13000000, 760000000, 760, 13, 1, 12}, + { 19200000, 760000000, 950, 24, 1, 8}, + { 26000000, 760000000, 760, 26, 1, 12}, + + /* 608 MHz */ + { 12000000, 608000000, 760, 12, 1, 12}, + { 13000000, 608000000, 760, 13, 1, 12}, + { 19200000, 608000000, 380, 12, 1, 8}, + { 26000000, 608000000, 760, 26, 1, 12}, + + /* 456 MHz */ + { 12000000, 456000000, 456, 12, 1, 12}, + { 13000000, 456000000, 456, 13, 1, 12}, + { 19200000, 456000000, 380, 16, 1, 8}, + { 26000000, 456000000, 456, 26, 1, 12}, + + /* 312 MHz */ + { 12000000, 312000000, 312, 12, 1, 12}, + { 13000000, 312000000, 312, 13, 1, 12}, + { 19200000, 312000000, 260, 16, 1, 8}, + { 26000000, 312000000, 312, 26, 1, 12}, + + { 0, 0, 0, 0, 0, 0 }, +}; + +static struct clk tegra_pll_x = { + .name = "pll_x", + .flags = PLL_HAS_CPCON | PLL_ALT_MISC_REG, + .ops = &tegra_pllx_ops, + .reg = 0xe0, + .input_min = 2000000, + .input_max = 31000000, + .parent = &tegra_clk_m, + .cf_min = 1000000, + .cf_max = 6000000, + .vco_min = 20000000, + .vco_max = 1200000000, + .pll_table = tegra_pll_x_table, + .max_rate = 1000000000, +}; + +static struct clk_pll_table tegra_pll_e_table[] = { + { 12000000, 100000000, 200, 24, 1, 0 }, + { 0, 0, 0, 0, 0, 0 }, +}; + +static struct clk tegra_pll_e = { + .name = "pll_e", + .flags = PLL_ALT_MISC_REG, + .ops = &tegra_plle_ops, + .input_min = 12000000, + .input_max = 12000000, + .max_rate = 100000000, + .parent = &tegra_clk_m, + .reg = 0xe8, + .pll_table = tegra_pll_e_table, +}; + +static struct clk tegra_clk_d = { + .name = "clk_d", + .flags = PERIPH_NO_RESET, + .ops = &tegra_clk_double_ops, + .clk_num = 90, + .reg = 0x34, + .reg_shift = 12, + .parent = &tegra_clk_m, + .max_rate = 52000000, +}; + +/* initialized before peripheral clocks */ +static struct clk_mux_sel mux_audio_sync_clk[8+1]; +static const struct audio_sources { + const char *name; + int value; +} mux_audio_sync_clk_sources[] = { + { .name = "spdif_in", .value = 0 }, + { .name = "i2s1", .value = 1 }, + { .name = "i2s2", .value = 2 }, + { .name = "pll_a_out0", .value = 4 }, +#if 0 /* FIXME: not implemented */ + { .name = "ac97", .value = 3 }, + { .name = "ext_audio_clk2", .value = 5 }, + { .name = "ext_audio_clk1", .value = 6 }, + { .name = "ext_vimclk", .value = 7 }, +#endif + { 0, 0 } +}; + +static struct clk tegra_clk_audio = { + .name = "audio", + .inputs = mux_audio_sync_clk, + .reg = 0x38, + .max_rate = 24000000, + .ops = &tegra_audio_sync_clk_ops +}; + +static struct clk tegra_clk_audio_2x = { + .name = "audio_2x", + .flags = PERIPH_NO_RESET, + .max_rate = 48000000, + .ops = &tegra_clk_double_ops, + .clk_num = 89, + .reg = 0x34, + .reg_shift = 8, + .parent = &tegra_clk_audio, +}; + +struct clk_lookup tegra_audio_clk_lookups[] = { + { .con_id = "audio", .clk = &tegra_clk_audio }, + { .con_id = "audio_2x", .clk = &tegra_clk_audio_2x } +}; + +/* This is called after peripheral clocks are initialized, as the + * audio_sync clock depends on some of the peripheral clocks. + */ + +static void init_audio_sync_clock_mux(void) +{ + int i; + struct clk_mux_sel *sel = mux_audio_sync_clk; + const struct audio_sources *src = mux_audio_sync_clk_sources; + struct clk_lookup *lookup; + + for (i = 0; src->name; i++, sel++, src++) { + sel->input = tegra_get_clock_by_name(src->name); + if (!sel->input) + pr_err("%s: could not find clk %s\n", __func__, + src->name); + sel->value = src->value; + } + + lookup = tegra_audio_clk_lookups; + for (i = 0; i < ARRAY_SIZE(tegra_audio_clk_lookups); i++, lookup++) { + clk_init(lookup->clk); + clkdev_add(lookup); + } +} + +static struct clk_mux_sel mux_cclk[] = { + { .input = &tegra_clk_m, .value = 0}, + { .input = &tegra_pll_c, .value = 1}, + { .input = &tegra_clk_32k, .value = 2}, + { .input = &tegra_pll_m, .value = 3}, + { .input = &tegra_pll_p, .value = 4}, + { .input = &tegra_pll_p_out4, .value = 5}, + { .input = &tegra_pll_p_out3, .value = 6}, + { .input = &tegra_clk_d, .value = 7}, + { .input = &tegra_pll_x, .value = 8}, + { 0, 0}, +}; + +static struct clk_mux_sel mux_sclk[] = { + { .input = &tegra_clk_m, .value = 0}, + { .input = &tegra_pll_c_out1, .value = 1}, + { .input = &tegra_pll_p_out4, .value = 2}, + { .input = &tegra_pll_p_out3, .value = 3}, + { .input = &tegra_pll_p_out2, .value = 4}, + { .input = &tegra_clk_d, .value = 5}, + { .input = &tegra_clk_32k, .value = 6}, + { .input = &tegra_pll_m_out1, .value = 7}, + { 0, 0}, +}; + +static struct clk tegra_clk_cclk = { + .name = "cclk", + .inputs = mux_cclk, + .reg = 0x20, + .ops = &tegra_super_ops, + .max_rate = 1000000000, +}; + +static struct clk tegra_clk_sclk = { + .name = "sclk", + .inputs = mux_sclk, + .reg = 0x28, + .ops = &tegra_super_ops, + .max_rate = 600000000, +}; + +static struct clk tegra_clk_virtual_cpu = { + .name = "cpu", + .parent = &tegra_clk_cclk, + .main = &tegra_pll_x, + .backup = &tegra_clk_m, + .ops = &tegra_cpu_ops, + .max_rate = 1000000000, + .dvfs = &tegra_dvfs_virtual_cpu_dvfs, +}; + +static struct clk tegra_clk_hclk = { + .name = "hclk", + .flags = DIV_BUS, + .parent = &tegra_clk_sclk, + .reg = 0x30, + .reg_shift = 4, + .ops = &tegra_bus_ops, + .max_rate = 240000000, +}; + +static struct clk tegra_clk_pclk = { + .name = "pclk", + .flags = DIV_BUS, + .parent = &tegra_clk_hclk, + .reg = 0x30, + .reg_shift = 0, + .ops = &tegra_bus_ops, + .max_rate = 108000000, +}; + +static struct clk_mux_sel mux_pllm_pllc_pllp_plla[] = { + { .input = &tegra_pll_m, .value = 0}, + { .input = &tegra_pll_c, .value = 1}, + { .input = &tegra_pll_p, .value = 2}, + { .input = &tegra_pll_a_out0, .value = 3}, + { 0, 0}, +}; + +static struct clk_mux_sel mux_pllm_pllc_pllp_clkm[] = { + { .input = &tegra_pll_m, .value = 0}, + { .input = &tegra_pll_c, .value = 1}, + { .input = &tegra_pll_p, .value = 2}, + { .input = &tegra_clk_m, .value = 3}, + { 0, 0}, +}; + +static struct clk_mux_sel mux_pllp_pllc_pllm_clkm[] = { + { .input = &tegra_pll_p, .value = 0}, + { .input = &tegra_pll_c, .value = 1}, + { .input = &tegra_pll_m, .value = 2}, + { .input = &tegra_clk_m, .value = 3}, + { 0, 0}, +}; + +static struct clk_mux_sel mux_pllaout0_audio2x_pllp_clkm[] = { + {.input = &tegra_pll_a_out0, .value = 0}, + {.input = &tegra_clk_audio_2x, .value = 1}, + {.input = &tegra_pll_p, .value = 2}, + {.input = &tegra_clk_m, .value = 3}, + { 0, 0}, +}; + +static struct clk_mux_sel mux_pllp_plld_pllc_clkm[] = { + {.input = &tegra_pll_p, .value = 0}, + {.input = &tegra_pll_d_out0, .value = 1}, + {.input = &tegra_pll_c, .value = 2}, + {.input = &tegra_clk_m, .value = 3}, + { 0, 0}, +}; + +static struct clk_mux_sel mux_pllp_pllc_audio_clkm_clk32[] = { + {.input = &tegra_pll_p, .value = 0}, + {.input = &tegra_pll_c, .value = 1}, + {.input = &tegra_clk_audio, .value = 2}, + {.input = &tegra_clk_m, .value = 3}, + {.input = &tegra_clk_32k, .value = 4}, + { 0, 0}, +}; + +static struct clk_mux_sel mux_pllp_pllc_pllm[] = { + {.input = &tegra_pll_p, .value = 0}, + {.input = &tegra_pll_c, .value = 1}, + {.input = &tegra_pll_m, .value = 2}, + { 0, 0}, +}; + +static struct clk_mux_sel mux_clk_m[] = { + { .input = &tegra_clk_m, .value = 0}, + { 0, 0}, +}; + +static struct clk_mux_sel mux_pllp_out3[] = { + { .input = &tegra_pll_p_out3, .value = 0}, + { 0, 0}, +}; + +static struct clk_mux_sel mux_plld[] = { + { .input = &tegra_pll_d, .value = 0}, + { 0, 0}, +}; + +static struct clk_mux_sel mux_clk_32k[] = { + { .input = &tegra_clk_32k, .value = 0}, + { 0, 0}, +}; + +#define PERIPH_CLK(_name, _dev, _con, _clk_num, _reg, _max, _inputs, _flags) \ + { \ + .name = _name, \ + .lookup = { \ + .dev_id = _dev, \ + .con_id = _con, \ + }, \ + .ops = &tegra_periph_clk_ops, \ + .clk_num = _clk_num, \ + .reg = _reg, \ + .inputs = _inputs, \ + .flags = _flags, \ + .max_rate = _max, \ + } + +struct clk tegra_periph_clks[] = { + PERIPH_CLK("rtc", "rtc-tegra", NULL, 4, 0, 32768, mux_clk_32k, PERIPH_NO_RESET), + PERIPH_CLK("timer", "timer", NULL, 5, 0, 26000000, mux_clk_m, 0), + PERIPH_CLK("i2s1", "i2s.0", NULL, 11, 0x100, 26000000, mux_pllaout0_audio2x_pllp_clkm, MUX | DIV_U71), + PERIPH_CLK("i2s2", "i2s.1", NULL, 18, 0x104, 26000000, mux_pllaout0_audio2x_pllp_clkm, MUX | DIV_U71), + /* FIXME: spdif has 2 clocks but 1 enable */ + PERIPH_CLK("spdif_out", "spdif_out", NULL, 10, 0x108, 100000000, mux_pllaout0_audio2x_pllp_clkm, MUX | DIV_U71), + PERIPH_CLK("spdif_in", "spdif_in", NULL, 10, 0x10c, 100000000, mux_pllp_pllc_pllm, MUX | DIV_U71), + PERIPH_CLK("pwm", "pwm", NULL, 17, 0x110, 432000000, mux_pllp_pllc_audio_clkm_clk32, MUX | DIV_U71), + PERIPH_CLK("spi", "spi", NULL, 43, 0x114, 40000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("xio", "xio", NULL, 45, 0x120, 150000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("twc", "twc", NULL, 16, 0x12c, 150000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("sbc1", "spi_tegra.0", NULL, 41, 0x134, 160000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("sbc2", "spi_tegra.1", NULL, 44, 0x118, 160000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("sbc3", "spi_tegra.2", NULL, 46, 0x11c, 160000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("sbc4", "spi_tegra.3", NULL, 68, 0x1b4, 160000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("ide", "ide", NULL, 25, 0x144, 100000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), /* requires min voltage */ + PERIPH_CLK("ndflash", "tegra_nand", NULL, 13, 0x160, 164000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), /* scales with voltage */ + /* FIXME: vfir shares an enable with uartb */ + PERIPH_CLK("vfir", "vfir", NULL, 7, 0x168, 72000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("sdmmc1", "sdhci-tegra.0", NULL, 14, 0x150, 52000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), /* scales with voltage */ + PERIPH_CLK("sdmmc2", "sdhci-tegra.1", NULL, 9, 0x154, 52000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), /* scales with voltage */ + PERIPH_CLK("sdmmc3", "sdhci-tegra.2", NULL, 69, 0x1bc, 52000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), /* scales with voltage */ + PERIPH_CLK("sdmmc4", "sdhci-tegra.3", NULL, 15, 0x160, 52000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), /* scales with voltage */ + PERIPH_CLK("vde", "vde", NULL, 61, 0x1c8, 250000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), /* scales with voltage and process_id */ + PERIPH_CLK("csite", "csite", NULL, 73, 0x1d4, 144000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), /* max rate ??? */ + /* FIXME: what is la? */ + PERIPH_CLK("la", "la", NULL, 76, 0x1f8, 26000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("owr", "tegra_w1", NULL, 71, 0x1cc, 26000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), + PERIPH_CLK("nor", "nor", NULL, 42, 0x1d0, 92000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), /* requires min voltage */ + PERIPH_CLK("mipi", "mipi", NULL, 50, 0x174, 60000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), /* scales with voltage */ + PERIPH_CLK("i2c1", "tegra-i2c.0", NULL, 12, 0x124, 26000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U16), + PERIPH_CLK("i2c2", "tegra-i2c.1", NULL, 54, 0x198, 26000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U16), + PERIPH_CLK("i2c3", "tegra-i2c.2", NULL, 67, 0x1b8, 26000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U16), + PERIPH_CLK("dvc", "tegra-i2c.3", NULL, 47, 0x128, 26000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U16), + PERIPH_CLK("i2c1_i2c", "tegra-i2c.0", "i2c", 0, 0, 72000000, mux_pllp_out3, 0), + PERIPH_CLK("i2c2_i2c", "tegra-i2c.1", "i2c", 0, 0, 72000000, mux_pllp_out3, 0), + PERIPH_CLK("i2c3_i2c", "tegra-i2c.2", "i2c", 0, 0, 72000000, mux_pllp_out3, 0), + PERIPH_CLK("dvc_i2c", "tegra-i2c.3", "i2c", 0, 0, 72000000, mux_pllp_out3, 0), + PERIPH_CLK("uarta", "uart.0", NULL, 6, 0x178, 216000000, mux_pllp_pllc_pllm_clkm, MUX), + PERIPH_CLK("uartb", "uart.1", NULL, 7, 0x17c, 216000000, mux_pllp_pllc_pllm_clkm, MUX), + PERIPH_CLK("uartc", "uart.2", NULL, 55, 0x1a0, 216000000, mux_pllp_pllc_pllm_clkm, MUX), + PERIPH_CLK("uartd", "uart.3", NULL, 65, 0x1c0, 216000000, mux_pllp_pllc_pllm_clkm, MUX), + PERIPH_CLK("uarte", "uart.4", NULL, 66, 0x1c4, 216000000, mux_pllp_pllc_pllm_clkm, MUX), + PERIPH_CLK("3d", "3d", NULL, 24, 0x158, 300000000, mux_pllm_pllc_pllp_plla, MUX | DIV_U71 | PERIPH_MANUAL_RESET), /* scales with voltage and process_id */ + PERIPH_CLK("2d", "2d", NULL, 21, 0x15c, 300000000, mux_pllm_pllc_pllp_plla, MUX | DIV_U71), /* scales with voltage and process_id */ + /* FIXME: vi and vi_sensor share an enable */ + PERIPH_CLK("vi", "vi", NULL, 20, 0x148, 150000000, mux_pllm_pllc_pllp_plla, MUX | DIV_U71), /* scales with voltage and process_id */ + PERIPH_CLK("vi_sensor", "vi_sensor", NULL, 20, 0x1a8, 150000000, mux_pllm_pllc_pllp_plla, MUX | DIV_U71 | PERIPH_NO_RESET), /* scales with voltage and process_id */ + PERIPH_CLK("epp", "epp", NULL, 19, 0x16c, 300000000, mux_pllm_pllc_pllp_plla, MUX | DIV_U71), /* scales with voltage and process_id */ + PERIPH_CLK("mpe", "mpe", NULL, 60, 0x170, 250000000, mux_pllm_pllc_pllp_plla, MUX | DIV_U71), /* scales with voltage and process_id */ + PERIPH_CLK("host1x", "host1x", NULL, 28, 0x180, 166000000, mux_pllm_pllc_pllp_plla, MUX | DIV_U71), /* scales with voltage and process_id */ + /* FIXME: cve and tvo share an enable */ + PERIPH_CLK("cve", "cve", NULL, 49, 0x140, 250000000, mux_pllp_plld_pllc_clkm, MUX | DIV_U71), /* requires min voltage */ + PERIPH_CLK("tvo", "tvo", NULL, 49, 0x188, 250000000, mux_pllp_plld_pllc_clkm, MUX | DIV_U71), /* requires min voltage */ + PERIPH_CLK("hdmi", "hdmi", NULL, 51, 0x18c, 148500000, mux_pllp_plld_pllc_clkm, MUX | DIV_U71), /* requires min voltage */ + PERIPH_CLK("tvdac", "tvdac", NULL, 53, 0x194, 250000000, mux_pllp_plld_pllc_clkm, MUX | DIV_U71), /* requires min voltage */ + PERIPH_CLK("disp1", "tegrafb.0", NULL, 27, 0x138, 190000000, mux_pllp_plld_pllc_clkm, MUX | DIV_U71), /* scales with voltage and process_id */ + PERIPH_CLK("disp2", "tegrafb.1", NULL, 26, 0x13c, 190000000, mux_pllp_plld_pllc_clkm, MUX | DIV_U71), /* scales with voltage and process_id */ + PERIPH_CLK("usbd", "fsl-tegra-udc", NULL, 22, 0, 480000000, mux_clk_m, 0), /* requires min voltage */ + PERIPH_CLK("usb2", "tegra-ehci.1", NULL, 58, 0, 480000000, mux_clk_m, 0), /* requires min voltage */ + PERIPH_CLK("usb3", "tegra-ehci.2", NULL, 59, 0, 480000000, mux_clk_m, 0), /* requires min voltage */ + PERIPH_CLK("emc", "emc", NULL, 57, 0x19c, 800000000, mux_pllm_pllc_pllp_clkm, MUX | DIV_U71 | PERIPH_EMC_ENB), + PERIPH_CLK("dsi", "dsi", NULL, 48, 0, 500000000, mux_plld, 0), /* scales with voltage */ + PERIPH_CLK("csi", "csi", NULL, 52, 0, 72000000, mux_pllp_out3, 0), + PERIPH_CLK("isp", "isp", NULL, 23, 0, 150000000, mux_clk_m, 0), /* same frequency as VI */ + PERIPH_CLK("csus", "csus", NULL, 92, 0, 150000000, mux_clk_m, PERIPH_NO_RESET), + PERIPH_CLK("pex", NULL, "pex", 70, 0, 26000000, mux_clk_m, PERIPH_MANUAL_RESET), + PERIPH_CLK("afi", NULL, "afi", 72, 0, 26000000, mux_clk_m, PERIPH_MANUAL_RESET), + PERIPH_CLK("pcie_xclk", NULL, "pcie_xclk", 74, 0, 26000000, mux_clk_m, PERIPH_MANUAL_RESET), +}; + +#define CLK_DUPLICATE(_name, _dev, _con) \ + { \ + .name = _name, \ + .lookup = { \ + .dev_id = _dev, \ + .con_id = _con, \ + }, \ + } + +/* Some clocks may be used by different drivers depending on the board + * configuration. List those here to register them twice in the clock lookup + * table under two names. + */ +struct clk_duplicate tegra_clk_duplicates[] = { + CLK_DUPLICATE("uarta", "tegra_uart.0", NULL), + CLK_DUPLICATE("uartb", "tegra_uart.1", NULL), + CLK_DUPLICATE("uartc", "tegra_uart.2", NULL), + CLK_DUPLICATE("uartd", "tegra_uart.3", NULL), + CLK_DUPLICATE("uarte", "tegra_uart.4", NULL), + CLK_DUPLICATE("host1x", "tegrafb.0", "host1x"), + CLK_DUPLICATE("host1x", "tegrafb.1", "host1x"), + CLK_DUPLICATE("usbd", "tegra-ehci.0", NULL), +}; + +#define CLK(dev, con, ck) \ + { \ + .dev_id = dev, \ + .con_id = con, \ + .clk = ck, \ + } + +struct clk_lookup tegra_clk_lookups[] = { + /* external root sources */ + CLK(NULL, "32k_clk", &tegra_clk_32k), + CLK(NULL, "pll_s", &tegra_pll_s), + CLK(NULL, "clk_m", &tegra_clk_m), + CLK(NULL, "pll_m", &tegra_pll_m), + CLK(NULL, "pll_m_out1", &tegra_pll_m_out1), + CLK(NULL, "pll_c", &tegra_pll_c), + CLK(NULL, "pll_c_out1", &tegra_pll_c_out1), + CLK(NULL, "pll_p", &tegra_pll_p), + CLK(NULL, "pll_p_out1", &tegra_pll_p_out1), + CLK(NULL, "pll_p_out2", &tegra_pll_p_out2), + CLK(NULL, "pll_p_out3", &tegra_pll_p_out3), + CLK(NULL, "pll_p_out4", &tegra_pll_p_out4), + CLK(NULL, "pll_a", &tegra_pll_a), + CLK(NULL, "pll_a_out0", &tegra_pll_a_out0), + CLK(NULL, "pll_d", &tegra_pll_d), + CLK(NULL, "pll_d_out0", &tegra_pll_d_out0), + CLK(NULL, "pll_u", &tegra_pll_u), + CLK(NULL, "pll_x", &tegra_pll_x), + CLK(NULL, "pll_e", &tegra_pll_e), + CLK(NULL, "cclk", &tegra_clk_cclk), + CLK(NULL, "sclk", &tegra_clk_sclk), + CLK(NULL, "hclk", &tegra_clk_hclk), + CLK(NULL, "pclk", &tegra_clk_pclk), + CLK(NULL, "clk_d", &tegra_clk_d), + CLK(NULL, "cpu", &tegra_clk_virtual_cpu), +}; + +void __init tegra2_init_clocks(void) +{ + int i; + struct clk_lookup *cl; + struct clk *c; + struct clk_duplicate *cd; + + for (i = 0; i < ARRAY_SIZE(tegra_clk_lookups); i++) { + cl = &tegra_clk_lookups[i]; + clk_init(cl->clk); + clkdev_add(cl); + } + + for (i = 0; i < ARRAY_SIZE(tegra_periph_clks); i++) { + c = &tegra_periph_clks[i]; + cl = &c->lookup; + cl->clk = c; + + clk_init(cl->clk); + clkdev_add(cl); + } + + for (i = 0; i < ARRAY_SIZE(tegra_clk_duplicates); i++) { + cd = &tegra_clk_duplicates[i]; + c = tegra_get_clock_by_name(cd->name); + if (c) { + cl = &cd->lookup; + cl->clk = c; + clkdev_add(cl); + } else { + pr_err("%s: Unknown duplicate clock %s\n", __func__, + cd->name); + } + } + + init_audio_sync_clock_mux(); +} + +#ifdef CONFIG_PM +static u32 clk_rst_suspend[RST_DEVICES_NUM + CLK_OUT_ENB_NUM + + PERIPH_CLK_SOURCE_NUM + 3]; + +void tegra_clk_suspend(void) +{ + unsigned long off, i; + u32 *ctx = clk_rst_suspend; + + *ctx++ = clk_readl(OSC_CTRL) & OSC_CTRL_MASK; + + for (off = PERIPH_CLK_SOURCE_I2S1; off <= PERIPH_CLK_SOURCE_OSC; + off += 4) { + if (off == PERIPH_CLK_SOURCE_EMC) + continue; + *ctx++ = clk_readl(off); + } + + off = RST_DEVICES; + for (i = 0; i < RST_DEVICES_NUM; i++, off += 4) + *ctx++ = clk_readl(off); + + off = CLK_OUT_ENB; + for (i = 0; i < CLK_OUT_ENB_NUM; i++, off += 4) + *ctx++ = clk_readl(off); + + *ctx++ = clk_readl(MISC_CLK_ENB); + *ctx++ = clk_readl(CLK_MASK_ARM); +} + +void tegra_clk_resume(void) +{ + unsigned long off, i; + const u32 *ctx = clk_rst_suspend; + u32 val; + + val = clk_readl(OSC_CTRL) & ~OSC_CTRL_MASK; + val |= *ctx++; + clk_writel(val, OSC_CTRL); + + /* enable all clocks before configuring clock sources */ + clk_writel(0xbffffff9ul, CLK_OUT_ENB); + clk_writel(0xfefffff7ul, CLK_OUT_ENB + 4); + clk_writel(0x77f01bfful, CLK_OUT_ENB + 8); + wmb(); + + for (off = PERIPH_CLK_SOURCE_I2S1; off <= PERIPH_CLK_SOURCE_OSC; + off += 4) { + if (off == PERIPH_CLK_SOURCE_EMC) + continue; + clk_writel(*ctx++, off); + } + wmb(); + + off = RST_DEVICES; + for (i = 0; i < RST_DEVICES_NUM; i++, off += 4) + clk_writel(*ctx++, off); + wmb(); + + off = CLK_OUT_ENB; + for (i = 0; i < CLK_OUT_ENB_NUM; i++, off += 4) + clk_writel(*ctx++, off); + wmb(); + + clk_writel(*ctx++, MISC_CLK_ENB); + clk_writel(*ctx++, CLK_MASK_ARM); +} +#endif diff --git a/arch/arm/mach-tegra/tegra2_dvfs.c b/arch/arm/mach-tegra/tegra2_dvfs.c new file mode 100644 index 00000000000..5529c238dd7 --- /dev/null +++ b/arch/arm/mach-tegra/tegra2_dvfs.c @@ -0,0 +1,86 @@ +/* + * arch/arm/mach-tegra/tegra2_dvfs.c + * + * Copyright (C) 2010 Google, Inc. + * + * Author: + * Colin Cross <ccross@google.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/kernel.h> + +#include "clock.h" +#include "tegra2_dvfs.h" + +static struct dvfs_table virtual_cpu_process_0[] = { + {314000000, 750}, + {456000000, 825}, + {608000000, 900}, + {760000000, 975}, + {817000000, 1000}, + {912000000, 1050}, + {1000000000, 1100}, + {0, 0}, +}; + +static struct dvfs_table virtual_cpu_process_1[] = { + {314000000, 750}, + {456000000, 825}, + {618000000, 900}, + {770000000, 975}, + {827000000, 1000}, + {922000000, 1050}, + {1000000000, 1100}, + {0, 0}, +}; + +static struct dvfs_table virtual_cpu_process_2[] = { + {494000000, 750}, + {675000000, 825}, + {817000000, 875}, + {922000000, 925}, + {1000000000, 975}, + {0, 0}, +}; + +static struct dvfs_table virtual_cpu_process_3[] = { + {730000000, 750}, + {760000000, 775}, + {845000000, 800}, + {1000000000, 875}, + {0, 0}, +}; + +struct dvfs tegra_dvfs_virtual_cpu_dvfs = { + .reg_id = "vdd_cpu", + .process_id_table = { + { + .process_id = 0, + .table = virtual_cpu_process_0, + }, + { + .process_id = 1, + .table = virtual_cpu_process_1, + }, + { + .process_id = 2, + .table = virtual_cpu_process_2, + }, + { + .process_id = 3, + .table = virtual_cpu_process_3, + }, + }, + .process_id_table_length = 4, + .cpu = 1, +}; diff --git a/arch/arm/mach-tegra/tegra2_dvfs.h b/arch/arm/mach-tegra/tegra2_dvfs.h new file mode 100644 index 00000000000..f8c1adba96a --- /dev/null +++ b/arch/arm/mach-tegra/tegra2_dvfs.h @@ -0,0 +1,20 @@ +/* + * arch/arm/mach-tegra/tegra2_dvfs.h + * + * Copyright (C) 2010 Google, Inc. + * + * Author: + * Colin Cross <ccross@google.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +extern struct dvfs tegra_dvfs_virtual_cpu_dvfs; diff --git a/arch/arm/mach-tegra/timer.c b/arch/arm/mach-tegra/timer.c new file mode 100644 index 00000000000..9057d6fd1d3 --- /dev/null +++ b/arch/arm/mach-tegra/timer.c @@ -0,0 +1,186 @@ +/* + * arch/arch/mach-tegra/timer.c + * + * Copyright (C) 2010 Google, Inc. + * + * Author: + * Colin Cross <ccross@google.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/init.h> +#include <linux/time.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/clockchips.h> +#include <linux/clocksource.h> +#include <linux/clk.h> +#include <linux/io.h> +#include <linux/cnt32_to_63.h> + +#include <asm/mach/time.h> +#include <asm/localtimer.h> + +#include <mach/iomap.h> +#include <mach/irqs.h> + +#include "board.h" +#include "clock.h" + +#define TIMERUS_CNTR_1US 0x10 +#define TIMERUS_USEC_CFG 0x14 +#define TIMERUS_CNTR_FREEZE 0x4c + +#define TIMER1_BASE 0x0 +#define TIMER2_BASE 0x8 +#define TIMER3_BASE 0x50 +#define TIMER4_BASE 0x58 + +#define TIMER_PTV 0x0 +#define TIMER_PCR 0x4 + +struct tegra_timer; + +static void __iomem *timer_reg_base = IO_ADDRESS(TEGRA_TMR1_BASE); + +#define timer_writel(value, reg) \ + __raw_writel(value, (u32)timer_reg_base + (reg)) +#define timer_readl(reg) \ + __raw_readl((u32)timer_reg_base + (reg)) + +static int tegra_timer_set_next_event(unsigned long cycles, + struct clock_event_device *evt) +{ + u32 reg; + + reg = 0x80000000 | ((cycles > 1) ? (cycles-1) : 0); + timer_writel(reg, TIMER3_BASE + TIMER_PTV); + + return 0; +} + +static void tegra_timer_set_mode(enum clock_event_mode mode, + struct clock_event_device *evt) +{ + u32 reg; + + timer_writel(0, TIMER3_BASE + TIMER_PTV); + + switch (mode) { + case CLOCK_EVT_MODE_PERIODIC: + reg = 0xC0000000 | ((1000000/HZ)-1); + timer_writel(reg, TIMER3_BASE + TIMER_PTV); + break; + case CLOCK_EVT_MODE_ONESHOT: + break; + case CLOCK_EVT_MODE_UNUSED: + case CLOCK_EVT_MODE_SHUTDOWN: + case CLOCK_EVT_MODE_RESUME: + break; + } +} + +static cycle_t tegra_clocksource_read(struct clocksource *cs) +{ + return cnt32_to_63(timer_readl(TIMERUS_CNTR_1US)); +} + +static struct clock_event_device tegra_clockevent = { + .name = "timer0", + .rating = 300, + .features = CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_PERIODIC, + .set_next_event = tegra_timer_set_next_event, + .set_mode = tegra_timer_set_mode, +}; + +static struct clocksource tegra_clocksource = { + .name = "timer_us", + .rating = 300, + .read = tegra_clocksource_read, + .mask = 0x7FFFFFFFFFFFFFFFULL, + .flags = CLOCK_SOURCE_IS_CONTINUOUS, +}; + +unsigned long long sched_clock(void) +{ + return clocksource_cyc2ns(tegra_clocksource.read(&tegra_clocksource), + tegra_clocksource.mult, tegra_clocksource.shift); +} + +static irqreturn_t tegra_timer_interrupt(int irq, void *dev_id) +{ + struct clock_event_device *evt = (struct clock_event_device *)dev_id; + timer_writel(1<<30, TIMER3_BASE + TIMER_PCR); + evt->event_handler(evt); + return IRQ_HANDLED; +} + +static struct irqaction tegra_timer_irq = { + .name = "timer0", + .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_TRIGGER_HIGH, + .handler = tegra_timer_interrupt, + .dev_id = &tegra_clockevent, + .irq = INT_TMR3, +}; + +static void __init tegra_init_timer(void) +{ + unsigned long rate = clk_measure_input_freq(); + int ret; + +#ifdef CONFIG_HAVE_ARM_TWD + twd_base = IO_ADDRESS(TEGRA_ARM_PERIF_BASE + 0x600); +#endif + + switch (rate) { + case 12000000: + timer_writel(0x000b, TIMERUS_USEC_CFG); + break; + case 13000000: + timer_writel(0x000c, TIMERUS_USEC_CFG); + break; + case 19200000: + timer_writel(0x045f, TIMERUS_USEC_CFG); + break; + case 26000000: + timer_writel(0x0019, TIMERUS_USEC_CFG); + break; + default: + WARN(1, "Unknown clock rate"); + } + + if (clocksource_register_hz(&tegra_clocksource, 1000000)) { + printk(KERN_ERR "Failed to register clocksource\n"); + BUG(); + } + + ret = setup_irq(tegra_timer_irq.irq, &tegra_timer_irq); + if (ret) { + printk(KERN_ERR "Failed to register timer IRQ: %d\n", ret); + BUG(); + } + + clockevents_calc_mult_shift(&tegra_clockevent, 1000000, 5); + tegra_clockevent.max_delta_ns = + clockevent_delta2ns(0x1fffffff, &tegra_clockevent); + tegra_clockevent.min_delta_ns = + clockevent_delta2ns(0x1, &tegra_clockevent); + tegra_clockevent.cpumask = cpu_all_mask; + tegra_clockevent.irq = tegra_timer_irq.irq; + clockevents_register_device(&tegra_clockevent); + + return; +} + +struct sys_timer tegra_timer = { + .init = tegra_init_timer, +}; |