arch/arm/plat-omap/devices.c

   1 /*
   2  * linux/arch/arm/plat-omap/devices.c
   3  *
   4  * Common platform device setup/initialization for OMAP1 and OMAP2
   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/module.h>
  13 #include <linux/kernel.h>
  14 #include <linux/init.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/io.h>
  17
  18 #include <mach/hardware.h>
  19 #include <asm/mach-types.h>
  20 #include <asm/mach/map.h>
  21
  22 #include <plat/tc.h>
  23 #include <plat/control.h>
  24 #include <plat/board.h>
  25 #include <plat/mmc.h>
  26 #include <plat/mux.h>
  27 #include <mach/gpio.h>
  28 #include <plat/menelaus.h>
  29 #include <plat/mcbsp.h>
  30 #include <plat/dsp_common.h>
  31 #include <plat/omap44xx.h>
  32
  33 #if     defined(CONFIG_OMAP_DSP) || defined(CONFIG_OMAP_DSP_MODULE)
  34
  35 static struct dsp_platform_data dsp_pdata = {
  36         .kdev_list = LIST_HEAD_INIT(dsp_pdata.kdev_list),
  37 };
  38
  39 static struct resource omap_dsp_resources[] = {
  40         {
  41                 .name   = "dsp_mmu",
  42                 .start  = -1,
  43                 .flags  = IORESOURCE_IRQ,
  44         },
  45 };
  46
  47 static struct platform_device omap_dsp_device = {
  48         .name           = "dsp",
  49         .id             = -1,
  50         .num_resources  = ARRAY_SIZE(omap_dsp_resources),
  51         .resource       = omap_dsp_resources,
  52         .dev = {
  53                 .platform_data = &dsp_pdata,
  54         },
  55 };
  56
  57 static inline void omap_init_dsp(void)
  58 {
  59         struct resource *res;
  60         int irq;
  61
  62         if (cpu_is_omap15xx())
  63                 irq = INT_1510_DSP_MMU;
  64         else if (cpu_is_omap16xx())
  65                 irq = INT_1610_DSP_MMU;
  66         else if (cpu_is_omap24xx())
  67                 irq = INT_24XX_DSP_MMU;
  68
  69         res = platform_get_resource_byname(&omap_dsp_device,
  70                                            IORESOURCE_IRQ, "dsp_mmu");
  71         res->start = irq;
  72
  73         platform_device_register(&omap_dsp_device);
  74 }
  75
  76 int dsp_kfunc_device_register(struct dsp_kfunc_device *kdev)
  77 {
  78         static DEFINE_MUTEX(dsp_pdata_lock);
  79
  80         spin_lock_init(&kdev->lock);
  81
  82         mutex_lock(&dsp_pdata_lock);
  83         list_add_tail(&kdev->entry, &dsp_pdata.kdev_list);
  84         mutex_unlock(&dsp_pdata_lock);
  85
  86         return 0;
  87 }
  88 EXPORT_SYMBOL(dsp_kfunc_device_register);
  89
  90 #else
  91 static inline void omap_init_dsp(void) { }
  92 #endif  /* CONFIG_OMAP_DSP */
  93
  94 /*-------------------------------------------------------------------------*/
  95 #if     defined(CONFIG_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)
  96
  97 static void omap_init_kp(void)
  98 {
  99         /* 2430 and 34xx keypad is on TWL4030 */
 100         if (cpu_is_omap2430() || cpu_is_omap34xx())
 101                 return;
 102
 103         if (machine_is_omap_h2() || machine_is_omap_h3()) {
 104                 omap_cfg_reg(F18_1610_KBC0);
 105                 omap_cfg_reg(D20_1610_KBC1);
 106                 omap_cfg_reg(D19_1610_KBC2);
 107                 omap_cfg_reg(E18_1610_KBC3);
 108                 omap_cfg_reg(C21_1610_KBC4);
 109
 110                 omap_cfg_reg(G18_1610_KBR0);
 111                 omap_cfg_reg(F19_1610_KBR1);
 112                 omap_cfg_reg(H14_1610_KBR2);
 113                 omap_cfg_reg(E20_1610_KBR3);
 114                 omap_cfg_reg(E19_1610_KBR4);
 115                 omap_cfg_reg(N19_1610_KBR5);
 116         } else if (machine_is_omap_perseus2() || machine_is_omap_fsample()) {
 117                 omap_cfg_reg(E2_7XX_KBR0);
 118                 omap_cfg_reg(J7_7XX_KBR1);
 119                 omap_cfg_reg(E1_7XX_KBR2);
 120                 omap_cfg_reg(F3_7XX_KBR3);
 121                 omap_cfg_reg(D2_7XX_KBR4);
 122
 123                 omap_cfg_reg(C2_7XX_KBC0);
 124                 omap_cfg_reg(D3_7XX_KBC1);
 125                 omap_cfg_reg(E4_7XX_KBC2);
 126                 omap_cfg_reg(F4_7XX_KBC3);
 127                 omap_cfg_reg(E3_7XX_KBC4);
 128         } else if (machine_is_omap_h4()) {
 129                 omap_cfg_reg(T19_24XX_KBR0);
 130                 omap_cfg_reg(R19_24XX_KBR1);
 131                 omap_cfg_reg(V18_24XX_KBR2);
 132                 omap_cfg_reg(M21_24XX_KBR3);
 133                 omap_cfg_reg(E5__24XX_KBR4);
 134                 if (omap_has_menelaus()) {
 135                         omap_cfg_reg(B3__24XX_KBR5);
 136                         omap_cfg_reg(AA4_24XX_KBC2);
 137                         omap_cfg_reg(B13_24XX_KBC6);
 138                 } else {
 139                         omap_cfg_reg(M18_24XX_KBR5);
 140                         omap_cfg_reg(H19_24XX_KBC2);
 141                         omap_cfg_reg(N19_24XX_KBC6);
 142                 }
 143                 omap_cfg_reg(R20_24XX_KBC0);
 144                 omap_cfg_reg(M14_24XX_KBC1);
 145                 omap_cfg_reg(V17_24XX_KBC3);
 146                 omap_cfg_reg(P21_24XX_KBC4);
 147                 omap_cfg_reg(L14_24XX_KBC5);
 148         }
 149 }
 150 #else
 151 static inline void omap_init_kp(void) {}
 152 #endif
 153
 154 /*-------------------------------------------------------------------------*/
 155 #if defined(CONFIG_OMAP_MCBSP) || defined(CONFIG_OMAP_MCBSP_MODULE)
 156
 157 static struct platform_device **omap_mcbsp_devices;
 158
 159 void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
 160                                         int size)
 161 {
 162         int i;
 163
 164         omap_mcbsp_devices = kzalloc(size * sizeof(struct platform_device *),
 165                                      GFP_KERNEL);
 166         if (!omap_mcbsp_devices) {
 167                 printk(KERN_ERR "Could not register McBSP devices\n");
 168                 return;
 169         }
 170
 171         for (i = 0; i < size; i++) {
 172                 struct platform_device *new_mcbsp;
 173                 int ret;
 174
 175                 new_mcbsp = platform_device_alloc("omap-mcbsp", i + 1);
 176                 if (!new_mcbsp)
 177                         continue;
 178                 new_mcbsp->dev.platform_data = &config[i];
 179                 ret = platform_device_add(new_mcbsp);
 180                 if (ret) {
 181                         platform_device_put(new_mcbsp);
 182                         continue;
 183                 }
 184                 omap_mcbsp_devices[i] = new_mcbsp;
 185         }
 186 }
 187
 188 #else
 189 void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
 190                                         int size)
 191 {  }
 192 #endif
 193
 194 /*-------------------------------------------------------------------------*/
 195
 196 #if defined(CONFIG_SND_OMAP_SOC_MCPDM) || \
 197                 defined(CONFIG_SND_OMAP_SOC_MCPDM_MODULE)
 198
 199 static struct resource mcpdm_resources[] = {
 200         {
 201                 .name           = "mcpdm_mem",
 202                 .start          = OMAP44XX_MCPDM_BASE,
 203                 .end            = OMAP44XX_MCPDM_BASE + SZ_4K,
 204                 .flags          = IORESOURCE_MEM,
 205         },
 206         {
 207                 .name           = "mcpdm_irq",
 208                 .start          = OMAP44XX_IRQ_MCPDM,
 209                 .end            = OMAP44XX_IRQ_MCPDM,
 210                 .flags          = IORESOURCE_IRQ,
 211         },
 212 };
 213
 214 static struct platform_device omap_mcpdm_device = {
 215         .name           = "omap-mcpdm",
 216         .id             = -1,
 217         .num_resources  = ARRAY_SIZE(mcpdm_resources),
 218         .resource       = mcpdm_resources,
 219 };
 220
 221 static void omap_init_mcpdm(void)
 222 {
 223         (void) platform_device_register(&omap_mcpdm_device);
 224 }
 225 #else
 226 static inline void omap_init_mcpdm(void) {}
 227 #endif
 228
 229 /*-------------------------------------------------------------------------*/
 230
 231 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) || \
 232         defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE)
 233
 234 #define OMAP_MMC_NR_RES         2
 235
 236 /*
 237  * Register MMC devices. Called from mach-omap1 and mach-omap2 device init.
 238  */
 239 int __init omap_mmc_add(const char *name, int id, unsigned long base,
 240                                 unsigned long size, unsigned int irq,
 241                                 struct omap_mmc_platform_data *data)
 242 {
 243         struct platform_device *pdev;
 244         struct resource res[OMAP_MMC_NR_RES];
 245         int ret;
 246
 247         pdev = platform_device_alloc(name, id);
 248         if (!pdev)
 249                 return -ENOMEM;
 250
 251         memset(res, 0, OMAP_MMC_NR_RES * sizeof(struct resource));
 252         res[0].start = base;
 253         res[0].end = base + size - 1;
 254         res[0].flags = IORESOURCE_MEM;
 255         res[1].start = res[1].end = irq;
 256         res[1].flags = IORESOURCE_IRQ;
 257
 258         ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res));
 259         if (ret == 0)
 260                 ret = platform_device_add_data(pdev, data, sizeof(*data));
 261         if (ret)
 262                 goto fail;
 263
 264         ret = platform_device_add(pdev);
 265         if (ret)
 266                 goto fail;
 267
 268         /* return device handle to board setup code */
 269         data->dev = &pdev->dev;
 270         return 0;
 271
 272 fail:
 273         platform_device_put(pdev);
 274         return ret;
 275 }
 276
 277 #endif
 278
 279 /*-------------------------------------------------------------------------*/
 280
 281 #if defined(CONFIG_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_MODULE)
 282
 283 #ifdef CONFIG_ARCH_OMAP2
 284 #define OMAP_RNG_BASE           0x480A0000
 285 #else
 286 #define OMAP_RNG_BASE           0xfffe5000
 287 #endif
 288
 289 static struct resource rng_resources[] = {
 290         {
 291                 .start          = OMAP_RNG_BASE,
 292                 .end            = OMAP_RNG_BASE + 0x4f,
 293                 .flags          = IORESOURCE_MEM,
 294         },
 295 };
 296
 297 static struct platform_device omap_rng_device = {
 298         .name           = "omap_rng",
 299         .id             = -1,
 300         .num_resources  = ARRAY_SIZE(rng_resources),
 301         .resource       = rng_resources,
 302 };
 303
 304 static void omap_init_rng(void)
 305 {
 306         (void) platform_device_register(&omap_rng_device);
 307 }
 308 #else
 309 static inline void omap_init_rng(void) {}
 310 #endif
 311
 312 /*-------------------------------------------------------------------------*/
 313
 314 /* Numbering for the SPI-capable controllers when used for SPI:
 315  * spi          = 1
 316  * uwire        = 2
 317  * mmc1..2      = 3..4
 318  * mcbsp1..3    = 5..7
 319  */
 320
 321 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
 322
 323 #define OMAP_UWIRE_BASE         0xfffb3000
 324
 325 static struct resource uwire_resources[] = {
 326         {
 327                 .start          = OMAP_UWIRE_BASE,
 328                 .end            = OMAP_UWIRE_BASE + 0x20,
 329                 .flags          = IORESOURCE_MEM,
 330         },
 331 };
 332
 333 static struct platform_device omap_uwire_device = {
 334         .name      = "omap_uwire",
 335         .id          = -1,
 336         .num_resources  = ARRAY_SIZE(uwire_resources),
 337         .resource       = uwire_resources,
 338 };
 339
 340 static void omap_init_uwire(void)
 341 {
 342         /* FIXME define and use a boot tag; not all boards will be hooking
 343          * up devices to the microwire controller, and multi-board configs
 344          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
 345          */
 346
 347         /* board-specific code must configure chipselects (only a few
 348          * are normally used) and SCLK/SDI/SDO (each has two choices).
 349          */
 350         (void) platform_device_register(&omap_uwire_device);
 351 }
 352 #else
 353 static inline void omap_init_uwire(void) {}
 354 #endif
 355
 356 /*-------------------------------------------------------------------------*/
 357
 358 #if     defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 359
 360 static struct resource wdt_resources[] = {
 361         {
 362                 .flags          = IORESOURCE_MEM,
 363         },
 364 };
 365
 366 static struct platform_device omap_wdt_device = {
 367         .name      = "omap_wdt",
 368         .id          = -1,
 369         .num_resources  = ARRAY_SIZE(wdt_resources),
 370         .resource       = wdt_resources,
 371 };
 372
 373 static void omap_init_wdt(void)
 374 {
 375         if (cpu_is_omap16xx())
 376                 wdt_resources[0].start = 0xfffeb000;
 377         else if (cpu_is_omap2420())
 378                 wdt_resources[0].start = 0x48022000; /* WDT2 */
 379         else if (cpu_is_omap2430())
 380                 wdt_resources[0].start = 0x49016000; /* WDT2 */
 381         else if (cpu_is_omap343x())
 382                 wdt_resources[0].start = 0x48314000; /* WDT2 */
 383         else if (cpu_is_omap44xx())
 384                 wdt_resources[0].start = 0x4a314000;
 385         else
 386                 return;
 387
 388         wdt_resources[0].end = wdt_resources[0].start + 0x4f;
 389
 390         (void) platform_device_register(&omap_wdt_device);
 391 }
 392 #else
 393 static inline void omap_init_wdt(void) {}
 394 #endif
 395
 396 /*
 397  * This gets called after board-specific INIT_MACHINE, and initializes most
 398  * on-chip peripherals accessible on this board (except for few like USB):
 399  *
 400  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 401  *      code will have muxed GPIO pins and done "nonstandard" setup;
 402  *      that code could live in the boot loader.
 403  *  (b) Populating board-specific platform_data with the data drivers
 404  *      rely on to handle wiring variations.
 405  *  (c) Creating platform devices as meaningful on this board and
 406  *      with this kernel configuration.
 407  *
 408  * Claiming GPIOs, and setting their direction and initial values, is the
 409  * responsibility of the device drivers.  So is responding to probe().
 410  *
 411  * Board-specific knowlege like creating devices or pin setup is to be
 412  * kept out of drivers as much as possible.  In particular, pin setup
 413  * may be handled by the boot loader, and drivers should expect it will
 414  * normally have been done by the time they're probed.
 415  */
 416 static int __init omap_init_devices(void)
 417 {
 418         /* please keep these calls, and their implementations above,
 419          * in alphabetical order so they're easier to sort through.
 420          */
 421         omap_init_dsp();
 422         omap_init_kp();
 423         omap_init_rng();
 424         omap_init_mcpdm();
 425         omap_init_uwire();
 426         omap_init_wdt();
 427         return 0;
 428 }
 429 arch_initcall(omap_init_devices);