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 <mach/tc.h>
  23 #include <mach/control.h>
  24 #include <mach/board.h>
  25 #include <mach/mmc.h>
  26 #include <mach/mux.h>
  27 #include <mach/gpio.h>
  28 #include <mach/menelaus.h>
  29 #include <mach/mcbsp.h>
  30 #include <mach/dsp_common.h>
  31
  32 #if     defined(CONFIG_OMAP_DSP) || defined(CONFIG_OMAP_DSP_MODULE)
  33
  34 static struct dsp_platform_data dsp_pdata = {
  35         .kdev_list = LIST_HEAD_INIT(dsp_pdata.kdev_list),
  36 };
  37
  38 static struct resource omap_dsp_resources[] = {
  39         {
  40                 .name   = "dsp_mmu",
  41                 .start  = -1,
  42                 .flags  = IORESOURCE_IRQ,
  43         },
  44 };
  45
  46 static struct platform_device omap_dsp_device = {
  47         .name           = "dsp",
  48         .id             = -1,
  49         .num_resources  = ARRAY_SIZE(omap_dsp_resources),
  50         .resource       = omap_dsp_resources,
  51         .dev = {
  52                 .platform_data = &dsp_pdata,
  53         },
  54 };
  55
  56 static inline void omap_init_dsp(void)
  57 {
  58         struct resource *res;
  59         int irq;
  60
  61         if (cpu_is_omap15xx())
  62                 irq = INT_1510_DSP_MMU;
  63         else if (cpu_is_omap16xx())
  64                 irq = INT_1610_DSP_MMU;
  65         else if (cpu_is_omap24xx())
  66                 irq = INT_24XX_DSP_MMU;
  67
  68         res = platform_get_resource_byname(&omap_dsp_device,
  69                                            IORESOURCE_IRQ, "dsp_mmu");
  70         res->start = irq;
  71
  72         platform_device_register(&omap_dsp_device);
  73 }
  74
  75 int dsp_kfunc_device_register(struct dsp_kfunc_device *kdev)
  76 {
  77         static DEFINE_MUTEX(dsp_pdata_lock);
  78
  79         spin_lock_init(&kdev->lock);
  80
  81         mutex_lock(&dsp_pdata_lock);
  82         list_add_tail(&kdev->entry, &dsp_pdata.kdev_list);
  83         mutex_unlock(&dsp_pdata_lock);
  84
  85         return 0;
  86 }
  87 EXPORT_SYMBOL(dsp_kfunc_device_register);
  88
  89 #else
  90 static inline void omap_init_dsp(void) { }
  91 #endif  /* CONFIG_OMAP_DSP */
  92
  93 /*-------------------------------------------------------------------------*/
  94 #if     defined(CONFIG_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)
  95
  96 static void omap_init_kp(void)
  97 {
  98         /* 2430 and 34xx keypad is on TWL4030 */
  99         if (cpu_is_omap2430() || cpu_is_omap34xx())
 100                 return;
 101
 102         if (machine_is_omap_h2() || machine_is_omap_h3()) {
 103                 omap_cfg_reg(F18_1610_KBC0);
 104                 omap_cfg_reg(D20_1610_KBC1);
 105                 omap_cfg_reg(D19_1610_KBC2);
 106                 omap_cfg_reg(E18_1610_KBC3);
 107                 omap_cfg_reg(C21_1610_KBC4);
 108
 109                 omap_cfg_reg(G18_1610_KBR0);
 110                 omap_cfg_reg(F19_1610_KBR1);
 111                 omap_cfg_reg(H14_1610_KBR2);
 112                 omap_cfg_reg(E20_1610_KBR3);
 113                 omap_cfg_reg(E19_1610_KBR4);
 114                 omap_cfg_reg(N19_1610_KBR5);
 115         } else if (machine_is_omap_perseus2() || machine_is_omap_fsample()) {
 116                 omap_cfg_reg(E2_730_KBR0);
 117                 omap_cfg_reg(J7_730_KBR1);
 118                 omap_cfg_reg(E1_730_KBR2);
 119                 omap_cfg_reg(F3_730_KBR3);
 120                 omap_cfg_reg(D2_730_KBR4);
 121
 122                 omap_cfg_reg(C2_730_KBC0);
 123                 omap_cfg_reg(D3_730_KBC1);
 124                 omap_cfg_reg(E4_730_KBC2);
 125                 omap_cfg_reg(F4_730_KBC3);
 126                 omap_cfg_reg(E3_730_KBC4);
 127         } else if (machine_is_omap_h4()) {
 128                 omap_cfg_reg(T19_24XX_KBR0);
 129                 omap_cfg_reg(R19_24XX_KBR1);
 130                 omap_cfg_reg(V18_24XX_KBR2);
 131                 omap_cfg_reg(M21_24XX_KBR3);
 132                 omap_cfg_reg(E5__24XX_KBR4);
 133                 if (omap_has_menelaus()) {
 134                         omap_cfg_reg(B3__24XX_KBR5);
 135                         omap_cfg_reg(AA4_24XX_KBC2);
 136                         omap_cfg_reg(B13_24XX_KBC6);
 137                 } else {
 138                         omap_cfg_reg(M18_24XX_KBR5);
 139                         omap_cfg_reg(H19_24XX_KBC2);
 140                         omap_cfg_reg(N19_24XX_KBC6);
 141                 }
 142                 omap_cfg_reg(R20_24XX_KBC0);
 143                 omap_cfg_reg(M14_24XX_KBC1);
 144                 omap_cfg_reg(V17_24XX_KBC3);
 145                 omap_cfg_reg(P21_24XX_KBC4);
 146                 omap_cfg_reg(L14_24XX_KBC5);
 147         }
 148 }
 149 #else
 150 static inline void omap_init_kp(void) {}
 151 #endif
 152
 153 /*-------------------------------------------------------------------------*/
 154 #if defined(CONFIG_OMAP_MCBSP) || defined(CONFIG_OMAP_MCBSP_MODULE)
 155
 156 static struct platform_device **omap_mcbsp_devices;
 157
 158 void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
 159                                         int size)
 160 {
 161         int i;
 162
 163         omap_mcbsp_devices = kzalloc(size * sizeof(struct platform_device *),
 164                                      GFP_KERNEL);
 165         if (!omap_mcbsp_devices) {
 166                 printk(KERN_ERR "Could not register McBSP devices\n");
 167                 return;
 168         }
 169
 170         for (i = 0; i < size; i++) {
 171                 struct platform_device *new_mcbsp;
 172                 int ret;
 173
 174                 new_mcbsp = platform_device_alloc("omap-mcbsp", i + 1);
 175                 if (!new_mcbsp)
 176                         continue;
 177                 new_mcbsp->dev.platform_data = &config[i];
 178                 ret = platform_device_add(new_mcbsp);
 179                 if (ret) {
 180                         platform_device_put(new_mcbsp);
 181                         continue;
 182                 }
 183                 omap_mcbsp_devices[i] = new_mcbsp;
 184         }
 185 }
 186
 187 #else
 188 void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
 189                                         int size)
 190 {  }
 191 #endif
 192
 193 /*-------------------------------------------------------------------------*/
 194
 195 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) || \
 196         defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE)
 197
 198 #define OMAP_MMC_NR_RES         2
 199
 200 /*
 201  * Register MMC devices. Called from mach-omap1 and mach-omap2 device init.
 202  */
 203 int __init omap_mmc_add(const char *name, int id, unsigned long base,
 204                                 unsigned long size, unsigned int irq,
 205                                 struct omap_mmc_platform_data *data)
 206 {
 207         struct platform_device *pdev;
 208         struct resource res[OMAP_MMC_NR_RES];
 209         int ret;
 210
 211         pdev = platform_device_alloc(name, id);
 212         if (!pdev)
 213                 return -ENOMEM;
 214
 215         memset(res, 0, OMAP_MMC_NR_RES * sizeof(struct resource));
 216         res[0].start = base;
 217         res[0].end = base + size - 1;
 218         res[0].flags = IORESOURCE_MEM;
 219         res[1].start = res[1].end = irq;
 220         res[1].flags = IORESOURCE_IRQ;
 221
 222         ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res));
 223         if (ret == 0)
 224                 ret = platform_device_add_data(pdev, data, sizeof(*data));
 225         if (ret)
 226                 goto fail;
 227
 228         ret = platform_device_add(pdev);
 229         if (ret)
 230                 goto fail;
 231         return 0;
 232
 233 fail:
 234         platform_device_put(pdev);
 235         return ret;
 236 }
 237
 238 #endif
 239
 240 /*-------------------------------------------------------------------------*/
 241
 242 /* Numbering for the SPI-capable controllers when used for SPI:
 243  * spi          = 1
 244  * uwire        = 2
 245  * mmc1..2      = 3..4
 246  * mcbsp1..3    = 5..7
 247  */
 248
 249 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
 250
 251 #define OMAP_UWIRE_BASE         0xfffb3000
 252
 253 static struct resource uwire_resources[] = {
 254         {
 255                 .start          = OMAP_UWIRE_BASE,
 256                 .end            = OMAP_UWIRE_BASE + 0x20,
 257                 .flags          = IORESOURCE_MEM,
 258         },
 259 };
 260
 261 static struct platform_device omap_uwire_device = {
 262         .name      = "omap_uwire",
 263         .id          = -1,
 264         .num_resources  = ARRAY_SIZE(uwire_resources),
 265         .resource       = uwire_resources,
 266 };
 267
 268 static void omap_init_uwire(void)
 269 {
 270         /* FIXME define and use a boot tag; not all boards will be hooking
 271          * up devices to the microwire controller, and multi-board configs
 272          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
 273          */
 274
 275         /* board-specific code must configure chipselects (only a few
 276          * are normally used) and SCLK/SDI/SDO (each has two choices).
 277          */
 278         (void) platform_device_register(&omap_uwire_device);
 279 }
 280 #else
 281 static inline void omap_init_uwire(void) {}
 282 #endif
 283
 284 /*-------------------------------------------------------------------------*/
 285
 286 #if     defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 287
 288 static struct resource wdt_resources[] = {
 289         {
 290                 .flags          = IORESOURCE_MEM,
 291         },
 292 };
 293
 294 static struct platform_device omap_wdt_device = {
 295         .name      = "omap_wdt",
 296         .id          = -1,
 297         .num_resources  = ARRAY_SIZE(wdt_resources),
 298         .resource       = wdt_resources,
 299 };
 300
 301 static void omap_init_wdt(void)
 302 {
 303         if (cpu_is_omap16xx())
 304                 wdt_resources[0].start = 0xfffeb000;
 305         else if (cpu_is_omap2420())
 306                 wdt_resources[0].start = 0x48022000; /* WDT2 */
 307         else if (cpu_is_omap2430())
 308                 wdt_resources[0].start = 0x49016000; /* WDT2 */
 309         else if (cpu_is_omap343x())
 310                 wdt_resources[0].start = 0x48314000; /* WDT2 */
 311         else
 312                 return;
 313
 314         wdt_resources[0].end = wdt_resources[0].start + 0x4f;
 315
 316         (void) platform_device_register(&omap_wdt_device);
 317 }
 318 #else
 319 static inline void omap_init_wdt(void) {}
 320 #endif
 321
 322 /*-------------------------------------------------------------------------*/
 323
 324 #if defined(CONFIG_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_MODULE)
 325
 326 #ifdef CONFIG_ARCH_OMAP24XX
 327 #define OMAP_RNG_BASE           0x480A0000
 328 #else
 329 #define OMAP_RNG_BASE           0xfffe5000
 330 #endif
 331
 332 static struct resource rng_resources[] = {
 333         {
 334                 .start          = OMAP_RNG_BASE,
 335                 .end            = OMAP_RNG_BASE + 0x4f,
 336                 .flags          = IORESOURCE_MEM,
 337         },
 338 };
 339
 340 static struct platform_device omap_rng_device = {
 341         .name      = "omap_rng",
 342         .id          = -1,
 343         .num_resources  = ARRAY_SIZE(rng_resources),
 344         .resource       = rng_resources,
 345 };
 346
 347 static void omap_init_rng(void)
 348 {
 349         (void) platform_device_register(&omap_rng_device);
 350 }
 351 #else
 352 static inline void omap_init_rng(void) {}
 353 #endif
 354
 355 /*
 356  * This gets called after board-specific INIT_MACHINE, and initializes most
 357  * on-chip peripherals accessible on this board (except for few like USB):
 358  *
 359  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 360  *      code will have muxed GPIO pins and done "nonstandard" setup;
 361  *      that code could live in the boot loader.
 362  *  (b) Populating board-specific platform_data with the data drivers
 363  *      rely on to handle wiring variations.
 364  *  (c) Creating platform devices as meaningful on this board and
 365  *      with this kernel configuration.
 366  *
 367  * Claiming GPIOs, and setting their direction and initial values, is the
 368  * responsibility of the device drivers.  So is responding to probe().
 369  *
 370  * Board-specific knowlege like creating devices or pin setup is to be
 371  * kept out of drivers as much as possible.  In particular, pin setup
 372  * may be handled by the boot loader, and drivers should expect it will
 373  * normally have been done by the time they're probed.
 374  */
 375 static int __init omap_init_devices(void)
 376 {
 377         /* please keep these calls, and their implementations above,
 378          * in alphabetical order so they're easier to sort through.
 379          */
 380         omap_init_dsp();
 381         omap_init_kp();
 382         omap_init_uwire();
 383         omap_init_wdt();
 384         omap_init_rng();
 385         return 0;
 386 }
 387 arch_initcall(omap_init_devices);