arch/arm/mach-omap1/devices.c

   1 /*
   2  * linux/arch/arm/mach-omap1/devices.c
   3  *
   4  * OMAP1 platform device setup/initialization
   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
  12 #include <linux/dma-mapping.h>
  13 #include <linux/gpio.h>
  14 #include <linux/module.h>
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/io.h>
  19 #include <linux/spi/spi.h>
  20
  21 #include <mach/camera.h>
  22 #include <mach/hardware.h>
  23 #include <asm/mach/map.h>
  24
  25 #include <plat/common.h>
  26 #include <plat/tc.h>
  27 #include <plat/board.h>
  28 #include <plat/mux.h>
  29 #include <plat/mmc.h>
  30 #include <plat/omap7xx.h>
  31 #include <plat/mcbsp.h>
  32
  33 /*-------------------------------------------------------------------------*/
  34
  35 #if defined(CONFIG_RTC_DRV_OMAP) || defined(CONFIG_RTC_DRV_OMAP_MODULE)
  36
  37 #define OMAP_RTC_BASE           0xfffb4800
  38
  39 static struct resource rtc_resources[] = {
  40         {
  41                 .start          = OMAP_RTC_BASE,
  42                 .end            = OMAP_RTC_BASE + 0x5f,
  43                 .flags          = IORESOURCE_MEM,
  44         },
  45         {
  46                 .start          = INT_RTC_TIMER,
  47                 .flags          = IORESOURCE_IRQ,
  48         },
  49         {
  50                 .start          = INT_RTC_ALARM,
  51                 .flags          = IORESOURCE_IRQ,
  52         },
  53 };
  54
  55 static struct platform_device omap_rtc_device = {
  56         .name           = "omap_rtc",
  57         .id             = -1,
  58         .num_resources  = ARRAY_SIZE(rtc_resources),
  59         .resource       = rtc_resources,
  60 };
  61
  62 static void omap_init_rtc(void)
  63 {
  64         (void) platform_device_register(&omap_rtc_device);
  65 }
  66 #else
  67 static inline void omap_init_rtc(void) {}
  68 #endif
  69
  70 static inline void omap_init_mbox(void) { }
  71
  72 /*-------------------------------------------------------------------------*/
  73
  74 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
  75
  76 static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller,
  77                         int controller_nr)
  78 {
  79         if (controller_nr == 0) {
  80                 if (cpu_is_omap7xx()) {
  81                         omap_cfg_reg(MMC_7XX_CMD);
  82                         omap_cfg_reg(MMC_7XX_CLK);
  83                         omap_cfg_reg(MMC_7XX_DAT0);
  84                 } else {
  85                         omap_cfg_reg(MMC_CMD);
  86                         omap_cfg_reg(MMC_CLK);
  87                         omap_cfg_reg(MMC_DAT0);
  88                 }
  89
  90                 if (cpu_is_omap1710()) {
  91                         omap_cfg_reg(M15_1710_MMC_CLKI);
  92                         omap_cfg_reg(P19_1710_MMC_CMDDIR);
  93                         omap_cfg_reg(P20_1710_MMC_DATDIR0);
  94                 }
  95                 if (mmc_controller->slots[0].wires == 4 && !cpu_is_omap7xx()) {
  96                         omap_cfg_reg(MMC_DAT1);
  97                         /* NOTE: DAT2 can be on W10 (here) or M15 */
  98                         if (!mmc_controller->slots[0].nomux)
  99                                 omap_cfg_reg(MMC_DAT2);
 100                         omap_cfg_reg(MMC_DAT3);
 101                 }
 102         }
 103
 104         /* Block 2 is on newer chips, and has many pinout options */
 105         if (cpu_is_omap16xx() && controller_nr == 1) {
 106                 if (!mmc_controller->slots[1].nomux) {
 107                         omap_cfg_reg(Y8_1610_MMC2_CMD);
 108                         omap_cfg_reg(Y10_1610_MMC2_CLK);
 109                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
 110                         omap_cfg_reg(W8_1610_MMC2_DAT0);
 111                         if (mmc_controller->slots[1].wires == 4) {
 112                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
 113                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
 114                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
 115                         }
 116
 117                         /* These are needed for the level shifter */
 118                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 119                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 120                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 121                 }
 122
 123                 /* Feedback clock must be set on OMAP-1710 MMC2 */
 124                 if (cpu_is_omap1710())
 125                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 126                                         MOD_CONF_CTRL_1);
 127         }
 128 }
 129
 130 void __init omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
 131                         int nr_controllers)
 132 {
 133         int i;
 134
 135         for (i = 0; i < nr_controllers; i++) {
 136                 unsigned long base, size;
 137                 unsigned int irq = 0;
 138
 139                 if (!mmc_data[i])
 140                         continue;
 141
 142                 omap1_mmc_mux(mmc_data[i], i);
 143
 144                 switch (i) {
 145                 case 0:
 146                         base = OMAP1_MMC1_BASE;
 147                         irq = INT_MMC;
 148                         break;
 149                 case 1:
 150                         if (!cpu_is_omap16xx())
 151                                 return;
 152                         base = OMAP1_MMC2_BASE;
 153                         irq = INT_1610_MMC2;
 154                         break;
 155                 default:
 156                         continue;
 157                 }
 158                 size = OMAP1_MMC_SIZE;
 159
 160                 omap_mmc_add("mmci-omap", i, base, size, irq, mmc_data[i]);
 161         };
 162 }
 163
 164 #endif
 165
 166 /*-------------------------------------------------------------------------*/
 167
 168 /* OMAP7xx SPI support */
 169 #if defined(CONFIG_SPI_OMAP_100K) || defined(CONFIG_SPI_OMAP_100K_MODULE)
 170
 171 struct platform_device omap_spi1 = {
 172         .name           = "omap1_spi100k",
 173         .id             = 1,
 174 };
 175
 176 struct platform_device omap_spi2 = {
 177         .name           = "omap1_spi100k",
 178         .id             = 2,
 179 };
 180
 181 static void omap_init_spi100k(void)
 182 {
 183         omap_spi1.dev.platform_data = ioremap(OMAP7XX_SPI1_BASE, 0x7ff);
 184         if (omap_spi1.dev.platform_data)
 185                 platform_device_register(&omap_spi1);
 186
 187         omap_spi2.dev.platform_data = ioremap(OMAP7XX_SPI2_BASE, 0x7ff);
 188         if (omap_spi2.dev.platform_data)
 189                 platform_device_register(&omap_spi2);
 190 }
 191
 192 #else
 193 static inline void omap_init_spi100k(void)
 194 {
 195 }
 196 #endif
 197
 198
 199 #define OMAP1_CAMERA_BASE       0xfffb6800
 200 #define OMAP1_CAMERA_IOSIZE     0x1c
 201
 202 static struct resource omap1_camera_resources[] = {
 203         [0] = {
 204                 .start  = OMAP1_CAMERA_BASE,
 205                 .end    = OMAP1_CAMERA_BASE + OMAP1_CAMERA_IOSIZE - 1,
 206                 .flags  = IORESOURCE_MEM,
 207         },
 208         [1] = {
 209                 .start  = INT_CAMERA,
 210                 .flags  = IORESOURCE_IRQ,
 211         },
 212 };
 213
 214 static u64 omap1_camera_dma_mask = DMA_BIT_MASK(32);
 215
 216 static struct platform_device omap1_camera_device = {
 217         .name           = "omap1-camera",
 218         .id             = 0, /* This is used to put cameras on this interface */
 219         .dev            = {
 220                 .dma_mask               = &omap1_camera_dma_mask,
 221                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 222         },
 223         .num_resources  = ARRAY_SIZE(omap1_camera_resources),
 224         .resource       = omap1_camera_resources,
 225 };
 226
 227 void __init omap1_camera_init(void *info)
 228 {
 229         struct platform_device *dev = &omap1_camera_device;
 230         int ret;
 231
 232         dev->dev.platform_data = info;
 233
 234         ret = platform_device_register(dev);
 235         if (ret)
 236                 dev_err(&dev->dev, "unable to register device: %d\n", ret);
 237 }
 238
 239
 240 /*-------------------------------------------------------------------------*/
 241
 242 static inline void omap_init_sti(void) {}
 243
 244 #if defined(CONFIG_SND_SOC) || defined(CONFIG_SND_SOC_MODULE)
 245
 246 static struct platform_device omap_pcm = {
 247         .name   = "omap-pcm-audio",
 248         .id     = -1,
 249 };
 250
 251 OMAP_MCBSP_PLATFORM_DEVICE(1);
 252 OMAP_MCBSP_PLATFORM_DEVICE(2);
 253 OMAP_MCBSP_PLATFORM_DEVICE(3);
 254
 255 static void omap_init_audio(void)
 256 {
 257         platform_device_register(&omap_mcbsp1);
 258         platform_device_register(&omap_mcbsp2);
 259         if (!cpu_is_omap7xx())
 260                 platform_device_register(&omap_mcbsp3);
 261         platform_device_register(&omap_pcm);
 262 }
 263
 264 #else
 265 static inline void omap_init_audio(void) {}
 266 #endif
 267
 268 /*-------------------------------------------------------------------------*/
 269
 270 /*
 271  * This gets called after board-specific INIT_MACHINE, and initializes most
 272  * on-chip peripherals accessible on this board (except for few like USB):
 273  *
 274  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 275  *      code will have muxed GPIO pins and done "nonstandard" setup;
 276  *      that code could live in the boot loader.
 277  *  (b) Populating board-specific platform_data with the data drivers
 278  *      rely on to handle wiring variations.
 279  *  (c) Creating platform devices as meaningful on this board and
 280  *      with this kernel configuration.
 281  *
 282  * Claiming GPIOs, and setting their direction and initial values, is the
 283  * responsibility of the device drivers.  So is responding to probe().
 284  *
 285  * Board-specific knowledge like creating devices or pin setup is to be
 286  * kept out of drivers as much as possible.  In particular, pin setup
 287  * may be handled by the boot loader, and drivers should expect it will
 288  * normally have been done by the time they're probed.
 289  */
 290 static int __init omap1_init_devices(void)
 291 {
 292         if (!cpu_class_is_omap1())
 293                 return -ENODEV;
 294
 295         omap_sram_init();
 296
 297         /* please keep these calls, and their implementations above,
 298          * in alphabetical order so they're easier to sort through.
 299          */
 300
 301         omap_init_mbox();
 302         omap_init_rtc();
 303         omap_init_spi100k();
 304         omap_init_sti();
 305         omap_init_audio();
 306
 307         return 0;
 308 }
 309 arch_initcall(omap1_init_devices);
 310
 311 #if defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 312
 313 static struct resource wdt_resources[] = {
 314         {
 315                 .start          = 0xfffeb000,
 316                 .end            = 0xfffeb07F,
 317                 .flags          = IORESOURCE_MEM,
 318         },
 319 };
 320
 321 static struct platform_device omap_wdt_device = {
 322         .name      = "omap_wdt",
 323         .id          = -1,
 324         .num_resources  = ARRAY_SIZE(wdt_resources),
 325         .resource       = wdt_resources,
 326 };
 327
 328 static int __init omap_init_wdt(void)
 329 {
 330         if (!cpu_is_omap16xx())
 331                 return -ENODEV;
 332
 333         return platform_device_register(&omap_wdt_device);
 334 }
 335 subsys_initcall(omap_init_wdt);
 336 #endif