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