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
 232         /* return device handle to board setup code */
 233         data->dev = &pdev->dev;
 234         return 0;
 235
 236 fail:
 237         platform_device_put(pdev);
 238         return ret;
 239 }
 240
 241 #endif
 242
 243 /*-------------------------------------------------------------------------*/
 244
 245 /* Numbering for the SPI-capable controllers when used for SPI:
 246  * spi          = 1
 247  * uwire        = 2
 248  * mmc1..2      = 3..4
 249  * mcbsp1..3    = 5..7
 250  */
 251
 252 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
 253
 254 #define OMAP_UWIRE_BASE         0xfffb3000
 255
 256 static struct resource uwire_resources[] = {
 257         {
 258                 .start          = OMAP_UWIRE_BASE,
 259                 .end            = OMAP_UWIRE_BASE + 0x20,
 260                 .flags          = IORESOURCE_MEM,
 261         },
 262 };
 263
 264 static struct platform_device omap_uwire_device = {
 265         .name      = "omap_uwire",
 266         .id          = -1,
 267         .num_resources  = ARRAY_SIZE(uwire_resources),
 268         .resource       = uwire_resources,
 269 };
 270
 271 static void omap_init_uwire(void)
 272 {
 273         /* FIXME define and use a boot tag; not all boards will be hooking
 274          * up devices to the microwire controller, and multi-board configs
 275          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
 276          */
 277
 278         /* board-specific code must configure chipselects (only a few
 279          * are normally used) and SCLK/SDI/SDO (each has two choices).
 280          */
 281         (void) platform_device_register(&omap_uwire_device);
 282 }
 283 #else
 284 static inline void omap_init_uwire(void) {}
 285 #endif
 286
 287 /*-------------------------------------------------------------------------*/
 288
 289 #if     defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 290
 291 static struct resource wdt_resources[] = {
 292         {
 293                 .flags          = IORESOURCE_MEM,
 294         },
 295 };
 296
 297 static struct platform_device omap_wdt_device = {
 298         .name      = "omap_wdt",
 299         .id          = -1,
 300         .num_resources  = ARRAY_SIZE(wdt_resources),
 301         .resource       = wdt_resources,
 302 };
 303
 304 static void omap_init_wdt(void)
 305 {
 306         if (cpu_is_omap16xx())
 307                 wdt_resources[0].start = 0xfffeb000;
 308         else if (cpu_is_omap2420())
 309                 wdt_resources[0].start = 0x48022000; /* WDT2 */
 310         else if (cpu_is_omap2430())
 311                 wdt_resources[0].start = 0x49016000; /* WDT2 */
 312         else if (cpu_is_omap343x())
 313                 wdt_resources[0].start = 0x48314000; /* WDT2 */
 314         else
 315                 return;
 316
 317         wdt_resources[0].end = wdt_resources[0].start + 0x4f;
 318
 319         (void) platform_device_register(&omap_wdt_device);
 320 }
 321 #else
 322 static inline void omap_init_wdt(void) {}
 323 #endif
 324
 325 /*-------------------------------------------------------------------------*/
 326
 327 #if defined(CONFIG_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_MODULE)
 328
 329 #ifdef CONFIG_ARCH_OMAP24XX
 330 #define OMAP_RNG_BASE           0x480A0000
 331 #else
 332 #define OMAP_RNG_BASE           0xfffe5000
 333 #endif
 334
 335 static struct resource rng_resources[] = {
 336         {
 337                 .start          = OMAP_RNG_BASE,
 338                 .end            = OMAP_RNG_BASE + 0x4f,
 339                 .flags          = IORESOURCE_MEM,
 340         },
 341 };
 342
 343 static struct platform_device omap_rng_device = {
 344         .name      = "omap_rng",
 345         .id          = -1,
 346         .num_resources  = ARRAY_SIZE(rng_resources),
 347         .resource       = rng_resources,
 348 };
 349
 350 static void omap_init_rng(void)
 351 {
 352         (void) platform_device_register(&omap_rng_device);
 353 }
 354 #else
 355 static inline void omap_init_rng(void) {}
 356 #endif
 357
 358 /*
 359  * This gets called after board-specific INIT_MACHINE, and initializes most
 360  * on-chip peripherals accessible on this board (except for few like USB):
 361  *
 362  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 363  *      code will have muxed GPIO pins and done "nonstandard" setup;
 364  *      that code could live in the boot loader.
 365  *  (b) Populating board-specific platform_data with the data drivers
 366  *      rely on to handle wiring variations.
 367  *  (c) Creating platform devices as meaningful on this board and
 368  *      with this kernel configuration.
 369  *
 370  * Claiming GPIOs, and setting their direction and initial values, is the
 371  * responsibility of the device drivers.  So is responding to probe().
 372  *
 373  * Board-specific knowlege like creating devices or pin setup is to be
 374  * kept out of drivers as much as possible.  In particular, pin setup
 375  * may be handled by the boot loader, and drivers should expect it will
 376  * normally have been done by the time they're probed.
 377  */
 378 static int __init omap_init_devices(void)
 379 {
 380         /* please keep these calls, and their implementations above,
 381          * in alphabetical order so they're easier to sort through.
 382          */
 383         omap_init_dsp();
 384         omap_init_kp();
 385         omap_init_uwire();
 386         omap_init_wdt();
 387         omap_init_rng();
 388         return 0;
 389 }
 390 arch_initcall(omap_init_devices);