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