diff options
Diffstat (limited to 'arch/arm/mach-imx/mach-mx21ads.c')
| -rw-r--r-- | arch/arm/mach-imx/mach-mx21ads.c | 322 |
1 files changed, 322 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/mach-mx21ads.c b/arch/arm/mach-imx/mach-mx21ads.c new file mode 100644 index 00000000000..e1282e9f50f --- /dev/null +++ b/arch/arm/mach-imx/mach-mx21ads.c @@ -0,0 +1,322 @@ +/* + * Copyright (C) 2000 Deep Blue Solutions Ltd + * Copyright (C) 2002 Shane Nay (shane@minirl.com) + * Copyright 2006-2007 Freescale Semiconductor, Inc. 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 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. + */ + +#include <linux/platform_device.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/physmap.h> +#include <linux/gpio.h> +#include <mach/common.h> +#include <mach/hardware.h> +#include <asm/mach-types.h> +#include <asm/mach/arch.h> +#include <asm/mach/time.h> +#include <asm/mach/map.h> +#include <mach/imxfb.h> +#include <mach/iomux-mx21.h> +#include <mach/mxc_nand.h> +#include <mach/mmc.h> + +#include "devices-imx21.h" +#include "devices.h" + +/* + * Memory-mapped I/O on MX21ADS base board + */ +#define MX21ADS_MMIO_BASE_ADDR 0xf5000000 +#define MX21ADS_MMIO_SIZE SZ_16M + +#define MX21ADS_REG_ADDR(offset) (void __force __iomem *) \ + (MX21ADS_MMIO_BASE_ADDR + (offset)) + +#define MX21ADS_CS8900A_IRQ IRQ_GPIOE(11) +#define MX21ADS_CS8900A_IOBASE_REG MX21ADS_REG_ADDR(0x000000) +#define MX21ADS_ST16C255_IOBASE_REG MX21ADS_REG_ADDR(0x200000) +#define MX21ADS_VERSION_REG MX21ADS_REG_ADDR(0x400000) +#define MX21ADS_IO_REG MX21ADS_REG_ADDR(0x800000) + +/* MX21ADS_IO_REG bit definitions */ +#define MX21ADS_IO_SD_WP 0x0001 /* read */ +#define MX21ADS_IO_TP6 0x0001 /* write */ +#define MX21ADS_IO_SW_SEL 0x0002 /* read */ +#define MX21ADS_IO_TP7 0x0002 /* write */ +#define MX21ADS_IO_RESET_E_UART 0x0004 +#define MX21ADS_IO_RESET_BASE 0x0008 +#define MX21ADS_IO_CSI_CTL2 0x0010 +#define MX21ADS_IO_CSI_CTL1 0x0020 +#define MX21ADS_IO_CSI_CTL0 0x0040 +#define MX21ADS_IO_UART1_EN 0x0080 +#define MX21ADS_IO_UART4_EN 0x0100 +#define MX21ADS_IO_LCDON 0x0200 +#define MX21ADS_IO_IRDA_EN 0x0400 +#define MX21ADS_IO_IRDA_FIR_SEL 0x0800 +#define MX21ADS_IO_IRDA_MD0_B 0x1000 +#define MX21ADS_IO_IRDA_MD1 0x2000 +#define MX21ADS_IO_LED4_ON 0x4000 +#define MX21ADS_IO_LED3_ON 0x8000 + +static const int mx21ads_pins[] __initconst = { + + /* CS8900A */ + (GPIO_PORTE | GPIO_GPIO | GPIO_IN | 11), + + /* UART1 */ + PE12_PF_UART1_TXD, + PE13_PF_UART1_RXD, + PE14_PF_UART1_CTS, + PE15_PF_UART1_RTS, + + /* UART3 (IrDA) - only TXD and RXD */ + PE8_PF_UART3_TXD, + PE9_PF_UART3_RXD, + + /* UART4 */ + PB26_AF_UART4_RTS, + PB28_AF_UART4_TXD, + PB29_AF_UART4_CTS, + PB31_AF_UART4_RXD, + + /* LCDC */ + PA5_PF_LSCLK, + PA6_PF_LD0, + PA7_PF_LD1, + PA8_PF_LD2, + PA9_PF_LD3, + PA10_PF_LD4, + PA11_PF_LD5, + PA12_PF_LD6, + PA13_PF_LD7, + PA14_PF_LD8, + PA15_PF_LD9, + PA16_PF_LD10, + PA17_PF_LD11, + PA18_PF_LD12, + PA19_PF_LD13, + PA20_PF_LD14, + PA21_PF_LD15, + PA22_PF_LD16, + PA24_PF_REV, /* Sharp panel dedicated signal */ + PA25_PF_CLS, /* Sharp panel dedicated signal */ + PA26_PF_PS, /* Sharp panel dedicated signal */ + PA27_PF_SPL_SPR, /* Sharp panel dedicated signal */ + PA28_PF_HSYNC, + PA29_PF_VSYNC, + PA30_PF_CONTRAST, + PA31_PF_OE_ACD, + + /* MMC/SDHC */ + PE18_PF_SD1_D0, + PE19_PF_SD1_D1, + PE20_PF_SD1_D2, + PE21_PF_SD1_D3, + PE22_PF_SD1_CMD, + PE23_PF_SD1_CLK, + + /* NFC */ + PF0_PF_NRFB, + PF1_PF_NFCE, + PF2_PF_NFWP, + PF3_PF_NFCLE, + PF4_PF_NFALE, + PF5_PF_NFRE, + PF6_PF_NFWE, + PF7_PF_NFIO0, + PF8_PF_NFIO1, + PF9_PF_NFIO2, + PF10_PF_NFIO3, + PF11_PF_NFIO4, + PF12_PF_NFIO5, + PF13_PF_NFIO6, + PF14_PF_NFIO7, +}; + +/* ADS's NOR flash: 2x AM29BDS128HE9VKI on 32-bit bus */ +static struct physmap_flash_data mx21ads_flash_data = { + .width = 4, +}; + +static struct resource mx21ads_flash_resource = { + .start = MX21_CS0_BASE_ADDR, + .end = MX21_CS0_BASE_ADDR + 0x02000000 - 1, + .flags = IORESOURCE_MEM, +}; + +static struct platform_device mx21ads_nor_mtd_device = { + .name = "physmap-flash", + .id = 0, + .dev = { + .platform_data = &mx21ads_flash_data, + }, + .num_resources = 1, + .resource = &mx21ads_flash_resource, +}; + +static const struct imxuart_platform_data uart_pdata_rts __initconst = { + .flags = IMXUART_HAVE_RTSCTS, +}; + +static const struct imxuart_platform_data uart_pdata_norts __initconst = { +}; + +static int mx21ads_fb_init(struct platform_device *pdev) +{ + u16 tmp; + + tmp = __raw_readw(MX21ADS_IO_REG); + tmp |= MX21ADS_IO_LCDON; + __raw_writew(tmp, MX21ADS_IO_REG); + return 0; +} + +static void mx21ads_fb_exit(struct platform_device *pdev) +{ + u16 tmp; + + tmp = __raw_readw(MX21ADS_IO_REG); + tmp &= ~MX21ADS_IO_LCDON; + __raw_writew(tmp, MX21ADS_IO_REG); +} + +/* + * Connected is a portrait Sharp-QVGA display + * of type: LQ035Q7DB02 + */ +static struct imx_fb_videomode mx21ads_modes[] = { + { + .mode = { + .name = "Sharp-LQ035Q7", + .refresh = 60, + .xres = 240, + .yres = 320, + .pixclock = 188679, /* in ps (5.3MHz) */ + .hsync_len = 2, + .left_margin = 6, + .right_margin = 16, + .vsync_len = 1, + .upper_margin = 8, + .lower_margin = 10, + }, + .pcr = 0xfb108bc7, + .bpp = 16, + }, +}; + +static struct imx_fb_platform_data mx21ads_fb_data = { + .mode = mx21ads_modes, + .num_modes = ARRAY_SIZE(mx21ads_modes), + + .pwmr = 0x00a903ff, + .lscr1 = 0x00120300, + .dmacr = 0x00020008, + + .init = mx21ads_fb_init, + .exit = mx21ads_fb_exit, +}; + +static int mx21ads_sdhc_get_ro(struct device *dev) +{ + return (__raw_readw(MX21ADS_IO_REG) & MX21ADS_IO_SD_WP) ? 1 : 0; +} + +static int mx21ads_sdhc_init(struct device *dev, irq_handler_t detect_irq, + void *data) +{ + int ret; + + ret = request_irq(IRQ_GPIOD(25), detect_irq, + IRQF_TRIGGER_FALLING, "mmc-detect", data); + if (ret) + goto out; + return 0; +out: + return ret; +} + +static void mx21ads_sdhc_exit(struct device *dev, void *data) +{ + free_irq(IRQ_GPIOD(25), data); +} + +static struct imxmmc_platform_data mx21ads_sdhc_pdata = { + .ocr_avail = MMC_VDD_29_30 | MMC_VDD_30_31, /* 3.0V */ + .get_ro = mx21ads_sdhc_get_ro, + .init = mx21ads_sdhc_init, + .exit = mx21ads_sdhc_exit, +}; + +static const struct mxc_nand_platform_data +mx21ads_nand_board_info __initconst = { + .width = 1, + .hw_ecc = 1, +}; + +static struct map_desc mx21ads_io_desc[] __initdata = { + /* + * Memory-mapped I/O on MX21ADS Base board: + * - CS8900A Ethernet controller + * - ST16C2552CJ UART + * - CPU and Base board version + * - Base board I/O register + */ + { + .virtual = MX21ADS_MMIO_BASE_ADDR, + .pfn = __phys_to_pfn(MX21_CS1_BASE_ADDR), + .length = MX21ADS_MMIO_SIZE, + .type = MT_DEVICE, + }, +}; + +static void __init mx21ads_map_io(void) +{ + mx21_map_io(); + iotable_init(mx21ads_io_desc, ARRAY_SIZE(mx21ads_io_desc)); +} + +static struct platform_device *platform_devices[] __initdata = { + &mx21ads_nor_mtd_device, +}; + +static void __init mx21ads_board_init(void) +{ + mxc_gpio_setup_multiple_pins(mx21ads_pins, ARRAY_SIZE(mx21ads_pins), + "mx21ads"); + + imx21_add_imx_uart0(&uart_pdata_rts); + imx21_add_imx_uart2(&uart_pdata_norts); + imx21_add_imx_uart3(&uart_pdata_rts); + mxc_register_device(&mxc_fb_device, &mx21ads_fb_data); + mxc_register_device(&mxc_sdhc_device0, &mx21ads_sdhc_pdata); + imx21_add_mxc_nand(&mx21ads_nand_board_info); + + platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices)); +} + +static void __init mx21ads_timer_init(void) +{ + mx21_clocks_init(32768, 26000000); +} + +static struct sys_timer mx21ads_timer = { + .init = mx21ads_timer_init, +}; + +MACHINE_START(MX21ADS, "Freescale i.MX21ADS") + /* maintainer: Freescale Semiconductor, Inc. */ + .boot_params = MX21_PHYS_OFFSET + 0x100, + .map_io = mx21ads_map_io, + .init_irq = mx21_init_irq, + .init_machine = mx21ads_board_init, + .timer = &mx21ads_timer, +MACHINE_END |