arch/arm/mach-imx/mach-mx21ads.c

   1 /*
   2  *  Copyright (C) 2000 Deep Blue Solutions Ltd
   3  *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
   4  *  Copyright 2006-2007 Freescale Semiconductor, Inc. All Rights Reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  */
  16
  17 #include <linux/platform_device.h>
  18 #include <linux/mtd/mtd.h>
  19 #include <linux/mtd/physmap.h>
  20 #include <linux/gpio.h>
  21 #include <mach/common.h>
  22 #include <mach/hardware.h>
  23 #include <asm/mach-types.h>
  24 #include <asm/mach/arch.h>
  25 #include <asm/mach/time.h>
  26 #include <asm/mach/map.h>
  27 #include <mach/iomux-mx21.h>
  28
  29 #include "devices-imx21.h"
  30
  31 /*
  32  * Memory-mapped I/O on MX21ADS base board
  33  */
  34 #define MX21ADS_MMIO_BASE_ADDR   0xf5000000
  35 #define MX21ADS_MMIO_SIZE        SZ_16M
  36
  37 #define MX21ADS_REG_ADDR(offset)    (void __force __iomem *) \
  38                 (MX21ADS_MMIO_BASE_ADDR + (offset))
  39
  40 #define MX21ADS_CS8900A_IRQ         IRQ_GPIOE(11)
  41 #define MX21ADS_CS8900A_IOBASE_REG  MX21ADS_REG_ADDR(0x000000)
  42 #define MX21ADS_ST16C255_IOBASE_REG MX21ADS_REG_ADDR(0x200000)
  43 #define MX21ADS_VERSION_REG         MX21ADS_REG_ADDR(0x400000)
  44 #define MX21ADS_IO_REG              MX21ADS_REG_ADDR(0x800000)
  45
  46 /* MX21ADS_IO_REG bit definitions */
  47 #define MX21ADS_IO_SD_WP        0x0001 /* read */
  48 #define MX21ADS_IO_TP6          0x0001 /* write */
  49 #define MX21ADS_IO_SW_SEL       0x0002 /* read */
  50 #define MX21ADS_IO_TP7          0x0002 /* write */
  51 #define MX21ADS_IO_RESET_E_UART 0x0004
  52 #define MX21ADS_IO_RESET_BASE   0x0008
  53 #define MX21ADS_IO_CSI_CTL2     0x0010
  54 #define MX21ADS_IO_CSI_CTL1     0x0020
  55 #define MX21ADS_IO_CSI_CTL0     0x0040
  56 #define MX21ADS_IO_UART1_EN     0x0080
  57 #define MX21ADS_IO_UART4_EN     0x0100
  58 #define MX21ADS_IO_LCDON        0x0200
  59 #define MX21ADS_IO_IRDA_EN      0x0400
  60 #define MX21ADS_IO_IRDA_FIR_SEL 0x0800
  61 #define MX21ADS_IO_IRDA_MD0_B   0x1000
  62 #define MX21ADS_IO_IRDA_MD1     0x2000
  63 #define MX21ADS_IO_LED4_ON      0x4000
  64 #define MX21ADS_IO_LED3_ON      0x8000
  65
  66 static const int mx21ads_pins[] __initconst = {
  67
  68         /* CS8900A */
  69         (GPIO_PORTE | GPIO_GPIO | GPIO_IN | 11),
  70
  71         /* UART1 */
  72         PE12_PF_UART1_TXD,
  73         PE13_PF_UART1_RXD,
  74         PE14_PF_UART1_CTS,
  75         PE15_PF_UART1_RTS,
  76
  77         /* UART3 (IrDA) - only TXD and RXD */
  78         PE8_PF_UART3_TXD,
  79         PE9_PF_UART3_RXD,
  80
  81         /* UART4 */
  82         PB26_AF_UART4_RTS,
  83         PB28_AF_UART4_TXD,
  84         PB29_AF_UART4_CTS,
  85         PB31_AF_UART4_RXD,
  86
  87         /* LCDC */
  88         PA5_PF_LSCLK,
  89         PA6_PF_LD0,
  90         PA7_PF_LD1,
  91         PA8_PF_LD2,
  92         PA9_PF_LD3,
  93         PA10_PF_LD4,
  94         PA11_PF_LD5,
  95         PA12_PF_LD6,
  96         PA13_PF_LD7,
  97         PA14_PF_LD8,
  98         PA15_PF_LD9,
  99         PA16_PF_LD10,
 100         PA17_PF_LD11,
 101         PA18_PF_LD12,
 102         PA19_PF_LD13,
 103         PA20_PF_LD14,
 104         PA21_PF_LD15,
 105         PA22_PF_LD16,
 106         PA24_PF_REV,     /* Sharp panel dedicated signal */
 107         PA25_PF_CLS,     /* Sharp panel dedicated signal */
 108         PA26_PF_PS,      /* Sharp panel dedicated signal */
 109         PA27_PF_SPL_SPR, /* Sharp panel dedicated signal */
 110         PA28_PF_HSYNC,
 111         PA29_PF_VSYNC,
 112         PA30_PF_CONTRAST,
 113         PA31_PF_OE_ACD,
 114
 115         /* MMC/SDHC */
 116         PE18_PF_SD1_D0,
 117         PE19_PF_SD1_D1,
 118         PE20_PF_SD1_D2,
 119         PE21_PF_SD1_D3,
 120         PE22_PF_SD1_CMD,
 121         PE23_PF_SD1_CLK,
 122
 123         /* NFC */
 124         PF0_PF_NRFB,
 125         PF1_PF_NFCE,
 126         PF2_PF_NFWP,
 127         PF3_PF_NFCLE,
 128         PF4_PF_NFALE,
 129         PF5_PF_NFRE,
 130         PF6_PF_NFWE,
 131         PF7_PF_NFIO0,
 132         PF8_PF_NFIO1,
 133         PF9_PF_NFIO2,
 134         PF10_PF_NFIO3,
 135         PF11_PF_NFIO4,
 136         PF12_PF_NFIO5,
 137         PF13_PF_NFIO6,
 138         PF14_PF_NFIO7,
 139 };
 140
 141 /* ADS's NOR flash: 2x AM29BDS128HE9VKI on 32-bit bus */
 142 static struct physmap_flash_data mx21ads_flash_data = {
 143         .width = 4,
 144 };
 145
 146 static struct resource mx21ads_flash_resource = {
 147         .start = MX21_CS0_BASE_ADDR,
 148         .end = MX21_CS0_BASE_ADDR + 0x02000000 - 1,
 149         .flags = IORESOURCE_MEM,
 150 };
 151
 152 static struct platform_device mx21ads_nor_mtd_device = {
 153         .name = "physmap-flash",
 154         .id = 0,
 155         .dev = {
 156                 .platform_data = &mx21ads_flash_data,
 157         },
 158         .num_resources = 1,
 159         .resource = &mx21ads_flash_resource,
 160 };
 161
 162 static const struct imxuart_platform_data uart_pdata_rts __initconst = {
 163         .flags = IMXUART_HAVE_RTSCTS,
 164 };
 165
 166 static const struct imxuart_platform_data uart_pdata_norts __initconst = {
 167 };
 168
 169 static int mx21ads_fb_init(struct platform_device *pdev)
 170 {
 171         u16 tmp;
 172
 173         tmp = __raw_readw(MX21ADS_IO_REG);
 174         tmp |= MX21ADS_IO_LCDON;
 175         __raw_writew(tmp, MX21ADS_IO_REG);
 176         return 0;
 177 }
 178
 179 static void mx21ads_fb_exit(struct platform_device *pdev)
 180 {
 181         u16 tmp;
 182
 183         tmp = __raw_readw(MX21ADS_IO_REG);
 184         tmp &= ~MX21ADS_IO_LCDON;
 185         __raw_writew(tmp, MX21ADS_IO_REG);
 186 }
 187
 188 /*
 189  * Connected is a portrait Sharp-QVGA display
 190  * of type: LQ035Q7DB02
 191  */
 192 static struct imx_fb_videomode mx21ads_modes[] = {
 193         {
 194                 .mode = {
 195                         .name           = "Sharp-LQ035Q7",
 196                         .refresh        = 60,
 197                         .xres           = 240,
 198                         .yres           = 320,
 199                         .pixclock       = 188679, /* in ps (5.3MHz) */
 200                         .hsync_len      = 2,
 201                         .left_margin    = 6,
 202                         .right_margin   = 16,
 203                         .vsync_len      = 1,
 204                         .upper_margin   = 8,
 205                         .lower_margin   = 10,
 206                 },
 207                 .pcr            = 0xfb108bc7,
 208                 .bpp            = 16,
 209         },
 210 };
 211
 212 static const struct imx_fb_platform_data mx21ads_fb_data __initconst = {
 213         .mode = mx21ads_modes,
 214         .num_modes = ARRAY_SIZE(mx21ads_modes),
 215
 216         .pwmr           = 0x00a903ff,
 217         .lscr1          = 0x00120300,
 218         .dmacr          = 0x00020008,
 219
 220         .init = mx21ads_fb_init,
 221         .exit = mx21ads_fb_exit,
 222 };
 223
 224 static int mx21ads_sdhc_get_ro(struct device *dev)
 225 {
 226         return (__raw_readw(MX21ADS_IO_REG) & MX21ADS_IO_SD_WP) ? 1 : 0;
 227 }
 228
 229 static int mx21ads_sdhc_init(struct device *dev, irq_handler_t detect_irq,
 230         void *data)
 231 {
 232         return request_irq(IRQ_GPIOD(25), detect_irq,
 233                 IRQF_TRIGGER_FALLING, "mmc-detect", data);
 234 }
 235
 236 static void mx21ads_sdhc_exit(struct device *dev, void *data)
 237 {
 238         free_irq(IRQ_GPIOD(25), data);
 239 }
 240
 241 static const struct imxmmc_platform_data mx21ads_sdhc_pdata __initconst = {
 242         .ocr_avail = MMC_VDD_29_30 | MMC_VDD_30_31, /* 3.0V */
 243         .get_ro = mx21ads_sdhc_get_ro,
 244         .init = mx21ads_sdhc_init,
 245         .exit = mx21ads_sdhc_exit,
 246 };
 247
 248 static const struct mxc_nand_platform_data
 249 mx21ads_nand_board_info __initconst = {
 250         .width = 1,
 251         .hw_ecc = 1,
 252 };
 253
 254 static struct map_desc mx21ads_io_desc[] __initdata = {
 255         /*
 256          * Memory-mapped I/O on MX21ADS Base board:
 257          *   - CS8900A Ethernet controller
 258          *   - ST16C2552CJ UART
 259          *   - CPU and Base board version
 260          *   - Base board I/O register
 261          */
 262         {
 263                 .virtual = MX21ADS_MMIO_BASE_ADDR,
 264                 .pfn = __phys_to_pfn(MX21_CS1_BASE_ADDR),
 265                 .length = MX21ADS_MMIO_SIZE,
 266                 .type = MT_DEVICE,
 267         },
 268 };
 269
 270 static void __init mx21ads_map_io(void)
 271 {
 272         mx21_map_io();
 273         iotable_init(mx21ads_io_desc, ARRAY_SIZE(mx21ads_io_desc));
 274 }
 275
 276 static struct platform_device *platform_devices[] __initdata = {
 277         &mx21ads_nor_mtd_device,
 278 };
 279
 280 static void __init mx21ads_board_init(void)
 281 {
 282         imx21_soc_init();
 283
 284         mxc_gpio_setup_multiple_pins(mx21ads_pins, ARRAY_SIZE(mx21ads_pins),
 285                         "mx21ads");
 286
 287         imx21_add_imx_uart0(&uart_pdata_rts);
 288         imx21_add_imx_uart2(&uart_pdata_norts);
 289         imx21_add_imx_uart3(&uart_pdata_rts);
 290         imx21_add_imx_fb(&mx21ads_fb_data);
 291         imx21_add_mxc_mmc(0, &mx21ads_sdhc_pdata);
 292         imx21_add_mxc_nand(&mx21ads_nand_board_info);
 293
 294         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 295 }
 296
 297 static void __init mx21ads_timer_init(void)
 298 {
 299         mx21_clocks_init(32768, 26000000);
 300 }
 301
 302 static struct sys_timer mx21ads_timer = {
 303         .init   = mx21ads_timer_init,
 304 };
 305
 306 MACHINE_START(MX21ADS, "Freescale i.MX21ADS")
 307         /* maintainer: Freescale Semiconductor, Inc. */
 308         .atag_offset = 0x100,
 309         .map_io = mx21ads_map_io,
 310         .init_early = imx21_init_early,
 311         .init_irq = mx21_init_irq,
 312         .handle_irq = imx21_handle_irq,
 313         .timer = &mx21ads_timer,
 314         .init_machine = mx21ads_board_init,
 315         .restart        = mxc_restart,
 316 MACHINE_END