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/spi/spi.h>
  19
  20 #include <linux/platform_data/omap-wd-timer.h>
  21
  22 #include <asm/mach/map.h>
  23
  24 #include <mach/tc.h>
  25 #include <mach/mux.h>
  26
  27 #include <mach/omap7xx.h>
  28 #include <mach/camera.h>
  29 #include <mach/hardware.h>
  30
  31 #include "../plat-omap/sram.h"
  32
  33 #include "common.h"
  34 #include "clock.h"
  35 #include "dma.h"
  36 #include "mmc.h"
  37
  38 #if defined(CONFIG_SND_SOC) || defined(CONFIG_SND_SOC_MODULE)
  39
  40 static struct platform_device omap_pcm = {
  41         .name   = "omap-pcm-audio",
  42         .id     = -1,
  43 };
  44
  45 static void omap_init_audio(void)
  46 {
  47         platform_device_register(&omap_pcm);
  48 }
  49
  50 #else
  51 static inline void omap_init_audio(void) {}
  52 #endif
  53
  54 /*-------------------------------------------------------------------------*/
  55
  56 #if defined(CONFIG_RTC_DRV_OMAP) || defined(CONFIG_RTC_DRV_OMAP_MODULE)
  57
  58 #define OMAP_RTC_BASE           0xfffb4800
  59
  60 static struct resource rtc_resources[] = {
  61         {
  62                 .start          = OMAP_RTC_BASE,
  63                 .end            = OMAP_RTC_BASE + 0x5f,
  64                 .flags          = IORESOURCE_MEM,
  65         },
  66         {
  67                 .start          = INT_RTC_TIMER,
  68                 .flags          = IORESOURCE_IRQ,
  69         },
  70         {
  71                 .start          = INT_RTC_ALARM,
  72                 .flags          = IORESOURCE_IRQ,
  73         },
  74 };
  75
  76 static struct platform_device omap_rtc_device = {
  77         .name           = "omap_rtc",
  78         .id             = -1,
  79         .num_resources  = ARRAY_SIZE(rtc_resources),
  80         .resource       = rtc_resources,
  81 };
  82
  83 static void omap_init_rtc(void)
  84 {
  85         (void) platform_device_register(&omap_rtc_device);
  86 }
  87 #else
  88 static inline void omap_init_rtc(void) {}
  89 #endif
  90
  91 static inline void omap_init_mbox(void) { }
  92
  93 /*-------------------------------------------------------------------------*/
  94
  95 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
  96
  97 static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller,
  98                         int controller_nr)
  99 {
 100         if (controller_nr == 0) {
 101                 if (cpu_is_omap7xx()) {
 102                         omap_cfg_reg(MMC_7XX_CMD);
 103                         omap_cfg_reg(MMC_7XX_CLK);
 104                         omap_cfg_reg(MMC_7XX_DAT0);
 105                 } else {
 106                         omap_cfg_reg(MMC_CMD);
 107                         omap_cfg_reg(MMC_CLK);
 108                         omap_cfg_reg(MMC_DAT0);
 109                 }
 110
 111                 if (cpu_is_omap1710()) {
 112                         omap_cfg_reg(M15_1710_MMC_CLKI);
 113                         omap_cfg_reg(P19_1710_MMC_CMDDIR);
 114                         omap_cfg_reg(P20_1710_MMC_DATDIR0);
 115                 }
 116                 if (mmc_controller->slots[0].wires == 4 && !cpu_is_omap7xx()) {
 117                         omap_cfg_reg(MMC_DAT1);
 118                         /* NOTE: DAT2 can be on W10 (here) or M15 */
 119                         if (!mmc_controller->slots[0].nomux)
 120                                 omap_cfg_reg(MMC_DAT2);
 121                         omap_cfg_reg(MMC_DAT3);
 122                 }
 123         }
 124
 125         /* Block 2 is on newer chips, and has many pinout options */
 126         if (cpu_is_omap16xx() && controller_nr == 1) {
 127                 if (!mmc_controller->slots[1].nomux) {
 128                         omap_cfg_reg(Y8_1610_MMC2_CMD);
 129                         omap_cfg_reg(Y10_1610_MMC2_CLK);
 130                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
 131                         omap_cfg_reg(W8_1610_MMC2_DAT0);
 132                         if (mmc_controller->slots[1].wires == 4) {
 133                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
 134                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
 135                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
 136                         }
 137
 138                         /* These are needed for the level shifter */
 139                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 140                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 141                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 142                 }
 143
 144                 /* Feedback clock must be set on OMAP-1710 MMC2 */
 145                 if (cpu_is_omap1710())
 146                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 147                                         MOD_CONF_CTRL_1);
 148         }
 149 }
 150
 151 #define OMAP_MMC_NR_RES         4
 152
 153 /*
 154  * Register MMC devices.
 155  */
 156 static int __init omap_mmc_add(const char *name, int id, unsigned long base,
 157                                 unsigned long size, unsigned int irq,
 158                                 unsigned rx_req, unsigned tx_req,
 159                                 struct omap_mmc_platform_data *data)
 160 {
 161         struct platform_device *pdev;
 162         struct resource res[OMAP_MMC_NR_RES];
 163         int ret;
 164
 165         pdev = platform_device_alloc(name, id);
 166         if (!pdev)
 167                 return -ENOMEM;
 168
 169         memset(res, 0, OMAP_MMC_NR_RES * sizeof(struct resource));
 170         res[0].start = base;
 171         res[0].end = base + size - 1;
 172         res[0].flags = IORESOURCE_MEM;
 173         res[1].start = res[1].end = irq;
 174         res[1].flags = IORESOURCE_IRQ;
 175         res[2].start = rx_req;
 176         res[2].name = "rx";
 177         res[2].flags = IORESOURCE_DMA;
 178         res[3].start = tx_req;
 179         res[3].name = "tx";
 180         res[3].flags = IORESOURCE_DMA;
 181
 182         if (cpu_is_omap7xx())
 183                 data->slots[0].features = MMC_OMAP7XX;
 184         if (cpu_is_omap15xx())
 185                 data->slots[0].features = MMC_OMAP15XX;
 186         if (cpu_is_omap16xx())
 187                 data->slots[0].features = MMC_OMAP16XX;
 188
 189         ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res));
 190         if (ret == 0)
 191                 ret = platform_device_add_data(pdev, data, sizeof(*data));
 192         if (ret)
 193                 goto fail;
 194
 195         ret = platform_device_add(pdev);
 196         if (ret)
 197                 goto fail;
 198
 199         /* return device handle to board setup code */
 200         data->dev = &pdev->dev;
 201         return 0;
 202
 203 fail:
 204         platform_device_put(pdev);
 205         return ret;
 206 }
 207
 208 void __init omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
 209                         int nr_controllers)
 210 {
 211         int i;
 212
 213         for (i = 0; i < nr_controllers; i++) {
 214                 unsigned long base, size;
 215                 unsigned rx_req, tx_req;
 216                 unsigned int irq = 0;
 217
 218                 if (!mmc_data[i])
 219                         continue;
 220
 221                 omap1_mmc_mux(mmc_data[i], i);
 222
 223                 switch (i) {
 224                 case 0:
 225                         base = OMAP1_MMC1_BASE;
 226                         irq = INT_MMC;
 227                         rx_req = OMAP_DMA_MMC_RX;
 228                         tx_req = OMAP_DMA_MMC_TX;
 229                         break;
 230                 case 1:
 231                         if (!cpu_is_omap16xx())
 232                                 return;
 233                         base = OMAP1_MMC2_BASE;
 234                         irq = INT_1610_MMC2;
 235                         rx_req = OMAP_DMA_MMC2_RX;
 236                         tx_req = OMAP_DMA_MMC2_TX;
 237                         break;
 238                 default:
 239                         continue;
 240                 }
 241                 size = OMAP1_MMC_SIZE;
 242
 243                 omap_mmc_add("mmci-omap", i, base, size, irq,
 244                                 rx_req, tx_req, mmc_data[i]);
 245         }
 246 }
 247
 248 #endif
 249
 250 /*-------------------------------------------------------------------------*/
 251
 252 /* OMAP7xx SPI support */
 253 #if defined(CONFIG_SPI_OMAP_100K) || defined(CONFIG_SPI_OMAP_100K_MODULE)
 254
 255 struct platform_device omap_spi1 = {
 256         .name           = "omap1_spi100k",
 257         .id             = 1,
 258 };
 259
 260 struct platform_device omap_spi2 = {
 261         .name           = "omap1_spi100k",
 262         .id             = 2,
 263 };
 264
 265 static void omap_init_spi100k(void)
 266 {
 267         omap_spi1.dev.platform_data = ioremap(OMAP7XX_SPI1_BASE, 0x7ff);
 268         if (omap_spi1.dev.platform_data)
 269                 platform_device_register(&omap_spi1);
 270
 271         omap_spi2.dev.platform_data = ioremap(OMAP7XX_SPI2_BASE, 0x7ff);
 272         if (omap_spi2.dev.platform_data)
 273                 platform_device_register(&omap_spi2);
 274 }
 275
 276 #else
 277 static inline void omap_init_spi100k(void)
 278 {
 279 }
 280 #endif
 281
 282
 283 #define OMAP1_CAMERA_BASE       0xfffb6800
 284 #define OMAP1_CAMERA_IOSIZE     0x1c
 285
 286 static struct resource omap1_camera_resources[] = {
 287         [0] = {
 288                 .start  = OMAP1_CAMERA_BASE,
 289                 .end    = OMAP1_CAMERA_BASE + OMAP1_CAMERA_IOSIZE - 1,
 290                 .flags  = IORESOURCE_MEM,
 291         },
 292         [1] = {
 293                 .start  = INT_CAMERA,
 294                 .flags  = IORESOURCE_IRQ,
 295         },
 296 };
 297
 298 static u64 omap1_camera_dma_mask = DMA_BIT_MASK(32);
 299
 300 static struct platform_device omap1_camera_device = {
 301         .name           = "omap1-camera",
 302         .id             = 0, /* This is used to put cameras on this interface */
 303         .dev            = {
 304                 .dma_mask               = &omap1_camera_dma_mask,
 305                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 306         },
 307         .num_resources  = ARRAY_SIZE(omap1_camera_resources),
 308         .resource       = omap1_camera_resources,
 309 };
 310
 311 void __init omap1_camera_init(void *info)
 312 {
 313         struct platform_device *dev = &omap1_camera_device;
 314         int ret;
 315
 316         dev->dev.platform_data = info;
 317
 318         ret = platform_device_register(dev);
 319         if (ret)
 320                 dev_err(&dev->dev, "unable to register device: %d\n", ret);
 321 }
 322
 323
 324 /*-------------------------------------------------------------------------*/
 325
 326 static inline void omap_init_sti(void) {}
 327
 328 /* Numbering for the SPI-capable controllers when used for SPI:
 329  * spi          = 1
 330  * uwire        = 2
 331  * mmc1..2      = 3..4
 332  * mcbsp1..3    = 5..7
 333  */
 334
 335 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
 336
 337 #define OMAP_UWIRE_BASE         0xfffb3000
 338
 339 static struct resource uwire_resources[] = {
 340         {
 341                 .start          = OMAP_UWIRE_BASE,
 342                 .end            = OMAP_UWIRE_BASE + 0x20,
 343                 .flags          = IORESOURCE_MEM,
 344         },
 345 };
 346
 347 static struct platform_device omap_uwire_device = {
 348         .name      = "omap_uwire",
 349         .id          = -1,
 350         .num_resources  = ARRAY_SIZE(uwire_resources),
 351         .resource       = uwire_resources,
 352 };
 353
 354 static void omap_init_uwire(void)
 355 {
 356         /* FIXME define and use a boot tag; not all boards will be hooking
 357          * up devices to the microwire controller, and multi-board configs
 358          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
 359          */
 360
 361         /* board-specific code must configure chipselects (only a few
 362          * are normally used) and SCLK/SDI/SDO (each has two choices).
 363          */
 364         (void) platform_device_register(&omap_uwire_device);
 365 }
 366 #else
 367 static inline void omap_init_uwire(void) {}
 368 #endif
 369
 370
 371 #define OMAP1_RNG_BASE          0xfffe5000
 372
 373 static struct resource omap1_rng_resources[] = {
 374         {
 375                 .start          = OMAP1_RNG_BASE,
 376                 .end            = OMAP1_RNG_BASE + 0x4f,
 377                 .flags          = IORESOURCE_MEM,
 378         },
 379 };
 380
 381 static struct platform_device omap1_rng_device = {
 382         .name           = "omap_rng",
 383         .id             = -1,
 384         .num_resources  = ARRAY_SIZE(omap1_rng_resources),
 385         .resource       = omap1_rng_resources,
 386 };
 387
 388 static void omap1_init_rng(void)
 389 {
 390         if (!cpu_is_omap16xx())
 391                 return;
 392
 393         (void) platform_device_register(&omap1_rng_device);
 394 }
 395
 396 /*-------------------------------------------------------------------------*/
 397
 398 /*
 399  * This gets called after board-specific INIT_MACHINE, and initializes most
 400  * on-chip peripherals accessible on this board (except for few like USB):
 401  *
 402  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 403  *      code will have muxed GPIO pins and done "nonstandard" setup;
 404  *      that code could live in the boot loader.
 405  *  (b) Populating board-specific platform_data with the data drivers
 406  *      rely on to handle wiring variations.
 407  *  (c) Creating platform devices as meaningful on this board and
 408  *      with this kernel configuration.
 409  *
 410  * Claiming GPIOs, and setting their direction and initial values, is the
 411  * responsibility of the device drivers.  So is responding to probe().
 412  *
 413  * Board-specific knowledge like creating devices or pin setup is to be
 414  * kept out of drivers as much as possible.  In particular, pin setup
 415  * may be handled by the boot loader, and drivers should expect it will
 416  * normally have been done by the time they're probed.
 417  */
 418 static int __init omap1_init_devices(void)
 419 {
 420         if (!cpu_class_is_omap1())
 421                 return -ENODEV;
 422
 423         omap_sram_init();
 424         omap1_clk_late_init();
 425
 426         /* please keep these calls, and their implementations above,
 427          * in alphabetical order so they're easier to sort through.
 428          */
 429
 430         omap_init_audio();
 431         omap_init_mbox();
 432         omap_init_rtc();
 433         omap_init_spi100k();
 434         omap_init_sti();
 435         omap_init_uwire();
 436         omap1_init_rng();
 437
 438         return 0;
 439 }
 440 arch_initcall(omap1_init_devices);
 441
 442 #if defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 443
 444 static struct resource wdt_resources[] = {
 445         {
 446                 .start          = 0xfffeb000,
 447                 .end            = 0xfffeb07F,
 448                 .flags          = IORESOURCE_MEM,
 449         },
 450 };
 451
 452 static struct platform_device omap_wdt_device = {
 453         .name           = "omap_wdt",
 454         .id             = -1,
 455         .num_resources  = ARRAY_SIZE(wdt_resources),
 456         .resource       = wdt_resources,
 457 };
 458
 459 static int __init omap_init_wdt(void)
 460 {
 461         struct omap_wd_timer_platform_data pdata;
 462         int ret;
 463
 464         if (!cpu_is_omap16xx())
 465                 return -ENODEV;
 466
 467         pdata.read_reset_sources = omap1_get_reset_sources;
 468
 469         ret = platform_device_register(&omap_wdt_device);
 470         if (!ret) {
 471                 ret = platform_device_add_data(&omap_wdt_device, &pdata,
 472                                                sizeof(pdata));
 473                 if (ret)
 474                         platform_device_del(&omap_wdt_device);
 475         }
 476
 477         return ret;
 478 }
 479 subsys_initcall(omap_init_wdt);
 480 #endif