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