diff options
Diffstat (limited to 'arch/arm/plat-spear')
| -rw-r--r-- | arch/arm/plat-spear/Kconfig | 47 | ||||
| -rw-r--r-- | arch/arm/plat-spear/Makefile | 9 | ||||
| -rw-r--r-- | arch/arm/plat-spear/include/plat/debug-macro.S | 36 | ||||
| -rw-r--r-- | arch/arm/plat-spear/include/plat/pl080.h | 21 | ||||
| -rw-r--r-- | arch/arm/plat-spear/include/plat/timex.h | 19 | ||||
| -rw-r--r-- | arch/arm/plat-spear/include/plat/uncompress.h | 42 | ||||
| -rw-r--r-- | arch/arm/plat-spear/pl080.c | 78 | ||||
| -rw-r--r-- | arch/arm/plat-spear/restart.c | 33 | ||||
| -rw-r--r-- | arch/arm/plat-spear/time.c | 245 |
9 files changed, 0 insertions, 530 deletions
diff --git a/arch/arm/plat-spear/Kconfig b/arch/arm/plat-spear/Kconfig deleted file mode 100644 index 8a08c31b5e2..00000000000 --- a/arch/arm/plat-spear/Kconfig +++ /dev/null @@ -1,47 +0,0 @@ -# -# SPEAr Platform configuration file -# - -if PLAT_SPEAR - -choice - prompt "ST SPEAr Family" - default ARCH_SPEAR3XX - -config ARCH_SPEAR13XX - bool "ST SPEAr13xx with Device Tree" - select ARCH_HAS_CPUFREQ - select ARM_GIC - select CPU_V7 - select GPIO_SPEAR_SPICS - select HAVE_SMP - select MIGHT_HAVE_CACHE_L2X0 - select PINCTRL - select USE_OF - help - Supports for ARM's SPEAR13XX family - -config ARCH_SPEAR3XX - bool "ST SPEAr3xx with Device Tree" - select ARM_VIC - select CPU_ARM926T - select PINCTRL - select USE_OF - help - Supports for ARM's SPEAR3XX family - -config ARCH_SPEAR6XX - bool "SPEAr6XX" - select ARM_VIC - select CPU_ARM926T - help - Supports for ARM's SPEAR6XX family - -endchoice - -# Adding SPEAr machine specific configuration files -source "arch/arm/mach-spear13xx/Kconfig" -source "arch/arm/mach-spear3xx/Kconfig" -source "arch/arm/mach-spear6xx/Kconfig" - -endif diff --git a/arch/arm/plat-spear/Makefile b/arch/arm/plat-spear/Makefile deleted file mode 100644 index 01e88532a5d..00000000000 --- a/arch/arm/plat-spear/Makefile +++ /dev/null @@ -1,9 +0,0 @@ -# -# SPEAr Platform specific Makefile -# - -# Common support -obj-y := restart.o time.o - -obj-$(CONFIG_ARCH_SPEAR3XX) += pl080.o -obj-$(CONFIG_ARCH_SPEAR6XX) += pl080.o diff --git a/arch/arm/plat-spear/include/plat/debug-macro.S b/arch/arm/plat-spear/include/plat/debug-macro.S deleted file mode 100644 index 75b05ad0fba..00000000000 --- a/arch/arm/plat-spear/include/plat/debug-macro.S +++ /dev/null @@ -1,36 +0,0 @@ -/* - * arch/arm/plat-spear/include/plat/debug-macro.S - * - * Debugging macro include header for spear platform - * - * Copyright (C) 2009 ST Microelectronics - * Viresh Kumar <viresh.linux@gmail.com> - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. - */ - -#include <linux/amba/serial.h> -#include <mach/spear.h> - - .macro addruart, rp, rv, tmp - mov \rp, #SPEAR_DBG_UART_BASE @ Physical base - mov \rv, #VA_SPEAR_DBG_UART_BASE @ Virtual base - .endm - - .macro senduart, rd, rx - strb \rd, [\rx, #UART01x_DR] @ ASC_TX_BUFFER - .endm - - .macro waituart, rd, rx -1001: ldr \rd, [\rx, #UART01x_FR] @ FLAG REGISTER - tst \rd, #UART01x_FR_TXFF @ TX_FULL - bne 1001b - .endm - - .macro busyuart, rd, rx -1002: ldr \rd, [\rx, #UART01x_FR] @ FLAG REGISTER - tst \rd, #UART011_FR_TXFE @ TX_EMPTY - beq 1002b - .endm diff --git a/arch/arm/plat-spear/include/plat/pl080.h b/arch/arm/plat-spear/include/plat/pl080.h deleted file mode 100644 index eb6590ded40..00000000000 --- a/arch/arm/plat-spear/include/plat/pl080.h +++ /dev/null @@ -1,21 +0,0 @@ -/* - * arch/arm/plat-spear/include/plat/pl080.h - * - * DMAC pl080 definitions for SPEAr platform - * - * Copyright (C) 2012 ST Microelectronics - * Viresh Kumar <viresh.linux@gmail.com> - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. - */ - -#ifndef __PLAT_PL080_H -#define __PLAT_PL080_H - -struct pl08x_channel_data; -int pl080_get_signal(const struct pl08x_channel_data *cd); -void pl080_put_signal(const struct pl08x_channel_data *cd, int signal); - -#endif /* __PLAT_PL080_H */ diff --git a/arch/arm/plat-spear/include/plat/timex.h b/arch/arm/plat-spear/include/plat/timex.h deleted file mode 100644 index ef95e5b780b..00000000000 --- a/arch/arm/plat-spear/include/plat/timex.h +++ /dev/null @@ -1,19 +0,0 @@ -/* - * arch/arm/plat-spear/include/plat/timex.h - * - * SPEAr platform specific timex definitions - * - * Copyright (C) 2009 ST Microelectronics - * Viresh Kumar <viresh.linux@gmail.com> - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. - */ - -#ifndef __PLAT_TIMEX_H -#define __PLAT_TIMEX_H - -#define CLOCK_TICK_RATE 48000000 - -#endif /* __PLAT_TIMEX_H */ diff --git a/arch/arm/plat-spear/include/plat/uncompress.h b/arch/arm/plat-spear/include/plat/uncompress.h deleted file mode 100644 index 51b2dc93e4d..00000000000 --- a/arch/arm/plat-spear/include/plat/uncompress.h +++ /dev/null @@ -1,42 +0,0 @@ -/* - * arch/arm/plat-spear/include/plat/uncompress.h - * - * Serial port stubs for kernel decompress status messages - * - * Copyright (C) 2009 ST Microelectronics - * Viresh Kumar <viresh.linux@gmail.com> - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. - */ - -#include <linux/io.h> -#include <linux/amba/serial.h> -#include <mach/spear.h> - -#ifndef __PLAT_UNCOMPRESS_H -#define __PLAT_UNCOMPRESS_H -/* - * This does not append a newline - */ -static inline void putc(int c) -{ - void __iomem *base = (void __iomem *)SPEAR_DBG_UART_BASE; - - while (readl_relaxed(base + UART01x_FR) & UART01x_FR_TXFF) - barrier(); - - writel_relaxed(c, base + UART01x_DR); -} - -static inline void flush(void) -{ -} - -/* - * nothing to do - */ -#define arch_decomp_setup() - -#endif /* __PLAT_UNCOMPRESS_H */ diff --git a/arch/arm/plat-spear/pl080.c b/arch/arm/plat-spear/pl080.c deleted file mode 100644 index cfa1199d0f4..00000000000 --- a/arch/arm/plat-spear/pl080.c +++ /dev/null @@ -1,78 +0,0 @@ -/* - * arch/arm/plat-spear/pl080.c - * - * DMAC pl080 definitions for SPEAr platform - * - * Copyright (C) 2012 ST Microelectronics - * Viresh Kumar <viresh.linux@gmail.com> - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. - */ - -#include <linux/amba/pl08x.h> -#include <linux/amba/bus.h> -#include <linux/bug.h> -#include <linux/err.h> -#include <linux/io.h> -#include <linux/spinlock_types.h> -#include <mach/spear.h> -#include <mach/misc_regs.h> - -static spinlock_t lock = __SPIN_LOCK_UNLOCKED(x); - -struct { - unsigned char busy; - unsigned char val; -} signals[16] = {{0, 0}, }; - -int pl080_get_signal(const struct pl08x_channel_data *cd) -{ - unsigned int signal = cd->min_signal, val; - unsigned long flags; - - spin_lock_irqsave(&lock, flags); - - /* Return if signal is already acquired by somebody else */ - if (signals[signal].busy && - (signals[signal].val != cd->muxval)) { - spin_unlock_irqrestore(&lock, flags); - return -EBUSY; - } - - /* If acquiring for the first time, configure it */ - if (!signals[signal].busy) { - val = readl(DMA_CHN_CFG); - - /* - * Each request line has two bits in DMA_CHN_CFG register. To - * goto the bits of current request line, do left shift of - * value by 2 * signal number. - */ - val &= ~(0x3 << (signal * 2)); - val |= cd->muxval << (signal * 2); - writel(val, DMA_CHN_CFG); - } - - signals[signal].busy++; - signals[signal].val = cd->muxval; - spin_unlock_irqrestore(&lock, flags); - - return signal; -} - -void pl080_put_signal(const struct pl08x_channel_data *cd, int signal) -{ - unsigned long flags; - - spin_lock_irqsave(&lock, flags); - - /* if signal is not used */ - if (!signals[signal].busy) - BUG(); - - signals[signal].busy--; - - spin_unlock_irqrestore(&lock, flags); -} diff --git a/arch/arm/plat-spear/restart.c b/arch/arm/plat-spear/restart.c deleted file mode 100644 index 7d4616d5df1..00000000000 --- a/arch/arm/plat-spear/restart.c +++ /dev/null @@ -1,33 +0,0 @@ -/* - * arch/arm/plat-spear/restart.c - * - * SPEAr platform specific restart functions - * - * Copyright (C) 2009 ST Microelectronics - * Viresh Kumar <viresh.linux@gmail.com> - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. - */ -#include <linux/io.h> -#include <linux/amba/sp810.h> -#include <asm/system_misc.h> -#include <mach/spear.h> -#include <mach/generic.h> - -#define SPEAR13XX_SYS_SW_RES (VA_MISC_BASE + 0x204) -void spear_restart(char mode, const char *cmd) -{ - if (mode == 's') { - /* software reset, Jump into ROM at address 0 */ - soft_restart(0); - } else { - /* hardware reset, Use on-chip reset capability */ -#ifdef CONFIG_ARCH_SPEAR13XX - writel_relaxed(0x01, SPEAR13XX_SYS_SW_RES); -#else - sysctl_soft_reset((void __iomem *)VA_SPEAR_SYS_CTRL_BASE); -#endif - } -} diff --git a/arch/arm/plat-spear/time.c b/arch/arm/plat-spear/time.c deleted file mode 100644 index bd5c53cd696..00000000000 --- a/arch/arm/plat-spear/time.c +++ /dev/null @@ -1,245 +0,0 @@ -/* - * arch/arm/plat-spear/time.c - * - * Copyright (C) 2010 ST Microelectronics - * Shiraz Hashim<shiraz.hashim@st.com> - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. - */ - -#include <linux/clk.h> -#include <linux/clockchips.h> -#include <linux/clocksource.h> -#include <linux/err.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/ioport.h> -#include <linux/io.h> -#include <linux/kernel.h> -#include <linux/of_irq.h> -#include <linux/of_address.h> -#include <linux/time.h> -#include <linux/irq.h> -#include <asm/mach/time.h> -#include <mach/generic.h> - -/* - * We would use TIMER0 and TIMER1 as clockevent and clocksource. - * Timer0 and Timer1 both belong to same gpt block in cpu subbsystem. Further - * they share same functional clock. Any change in one's functional clock will - * also affect other timer. - */ - -#define CLKEVT 0 /* gpt0, channel0 as clockevent */ -#define CLKSRC 1 /* gpt0, channel1 as clocksource */ - -/* Register offsets, x is channel number */ -#define CR(x) ((x) * 0x80 + 0x80) -#define IR(x) ((x) * 0x80 + 0x84) -#define LOAD(x) ((x) * 0x80 + 0x88) -#define COUNT(x) ((x) * 0x80 + 0x8C) - -/* Reg bit definitions */ -#define CTRL_INT_ENABLE 0x0100 -#define CTRL_ENABLE 0x0020 -#define CTRL_ONE_SHOT 0x0010 - -#define CTRL_PRESCALER1 0x0 -#define CTRL_PRESCALER2 0x1 -#define CTRL_PRESCALER4 0x2 -#define CTRL_PRESCALER8 0x3 -#define CTRL_PRESCALER16 0x4 -#define CTRL_PRESCALER32 0x5 -#define CTRL_PRESCALER64 0x6 -#define CTRL_PRESCALER128 0x7 -#define CTRL_PRESCALER256 0x8 - -#define INT_STATUS 0x1 - -/* - * Minimum clocksource/clockevent timer range in seconds - */ -#define SPEAR_MIN_RANGE 4 - -static __iomem void *gpt_base; -static struct clk *gpt_clk; - -static void clockevent_set_mode(enum clock_event_mode mode, - struct clock_event_device *clk_event_dev); -static int clockevent_next_event(unsigned long evt, - struct clock_event_device *clk_event_dev); - -static void spear_clocksource_init(void) -{ - u32 tick_rate; - u16 val; - - /* program the prescaler (/256)*/ - writew(CTRL_PRESCALER256, gpt_base + CR(CLKSRC)); - - /* find out actual clock driving Timer */ - tick_rate = clk_get_rate(gpt_clk); - tick_rate >>= CTRL_PRESCALER256; - - writew(0xFFFF, gpt_base + LOAD(CLKSRC)); - - val = readw(gpt_base + CR(CLKSRC)); - val &= ~CTRL_ONE_SHOT; /* autoreload mode */ - val |= CTRL_ENABLE ; - writew(val, gpt_base + CR(CLKSRC)); - - /* register the clocksource */ - clocksource_mmio_init(gpt_base + COUNT(CLKSRC), "tmr1", tick_rate, - 200, 16, clocksource_mmio_readw_up); -} - -static struct clock_event_device clkevt = { - .name = "tmr0", - .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT, - .set_mode = clockevent_set_mode, - .set_next_event = clockevent_next_event, - .shift = 0, /* to be computed */ -}; - -static void clockevent_set_mode(enum clock_event_mode mode, - struct clock_event_device *clk_event_dev) -{ - u32 period; - u16 val; - - /* stop the timer */ - val = readw(gpt_base + CR(CLKEVT)); - val &= ~CTRL_ENABLE; - writew(val, gpt_base + CR(CLKEVT)); - - switch (mode) { - case CLOCK_EVT_MODE_PERIODIC: - period = clk_get_rate(gpt_clk) / HZ; - period >>= CTRL_PRESCALER16; - writew(period, gpt_base + LOAD(CLKEVT)); - - val = readw(gpt_base + CR(CLKEVT)); - val &= ~CTRL_ONE_SHOT; - val |= CTRL_ENABLE | CTRL_INT_ENABLE; - writew(val, gpt_base + CR(CLKEVT)); - - break; - case CLOCK_EVT_MODE_ONESHOT: - val = readw(gpt_base + CR(CLKEVT)); - val |= CTRL_ONE_SHOT; - writew(val, gpt_base + CR(CLKEVT)); - - break; - case CLOCK_EVT_MODE_UNUSED: - case CLOCK_EVT_MODE_SHUTDOWN: - case CLOCK_EVT_MODE_RESUME: - - break; - default: - pr_err("Invalid mode requested\n"); - break; - } -} - -static int clockevent_next_event(unsigned long cycles, - struct clock_event_device *clk_event_dev) -{ - u16 val = readw(gpt_base + CR(CLKEVT)); - - if (val & CTRL_ENABLE) - writew(val & ~CTRL_ENABLE, gpt_base + CR(CLKEVT)); - - writew(cycles, gpt_base + LOAD(CLKEVT)); - - val |= CTRL_ENABLE | CTRL_INT_ENABLE; - writew(val, gpt_base + CR(CLKEVT)); - - return 0; -} - -static irqreturn_t spear_timer_interrupt(int irq, void *dev_id) -{ - struct clock_event_device *evt = &clkevt; - - writew(INT_STATUS, gpt_base + IR(CLKEVT)); - - evt->event_handler(evt); - - return IRQ_HANDLED; -} - -static struct irqaction spear_timer_irq = { - .name = "timer", - .flags = IRQF_DISABLED | IRQF_TIMER, - .handler = spear_timer_interrupt -}; - -static void __init spear_clockevent_init(int irq) -{ - u32 tick_rate; - - /* program the prescaler */ - writew(CTRL_PRESCALER16, gpt_base + CR(CLKEVT)); - - tick_rate = clk_get_rate(gpt_clk); - tick_rate >>= CTRL_PRESCALER16; - - clkevt.cpumask = cpumask_of(0); - - clockevents_config_and_register(&clkevt, tick_rate, 3, 0xfff0); - - setup_irq(irq, &spear_timer_irq); -} - -const static struct of_device_id timer_of_match[] __initconst = { - { .compatible = "st,spear-timer", }, - { }, -}; - -void __init spear_setup_of_timer(void) -{ - struct device_node *np; - int irq, ret; - - np = of_find_matching_node(NULL, timer_of_match); - if (!np) { - pr_err("%s: No timer passed via DT\n", __func__); - return; - } - - irq = irq_of_parse_and_map(np, 0); - if (!irq) { - pr_err("%s: No irq passed for timer via DT\n", __func__); - return; - } - - gpt_base = of_iomap(np, 0); - if (!gpt_base) { - pr_err("%s: of iomap failed\n", __func__); - return; - } - - gpt_clk = clk_get_sys("gpt0", NULL); - if (!gpt_clk) { - pr_err("%s:couldn't get clk for gpt\n", __func__); - goto err_iomap; - } - - ret = clk_prepare_enable(gpt_clk); - if (ret < 0) { - pr_err("%s:couldn't prepare-enable gpt clock\n", __func__); - goto err_prepare_enable_clk; - } - - spear_clockevent_init(irq); - spear_clocksource_init(); - - return; - -err_prepare_enable_clk: - clk_put(gpt_clk); -err_iomap: - iounmap(gpt_base); -} |