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