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