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