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/i2c/menelaus.h>
  18
  19 #include <mach/hardware.h>
  20 #include <asm/mach-types.h>
  21 #include <asm/mach/map.h>
  22
  23 #include <mach/tc.h>
  24 #include <mach/board.h>
  25 #include <mach/mmc.h>
  26 #include <mach/mux.h>
  27 #include <mach/gpio.h>
  28 #include <mach/dsp_common.h>
  29 #include <mach/mcbsp.h>
  30
  31 #if     defined(CONFIG_OMAP_DSP) || defined(CONFIG_OMAP_DSP_MODULE)
  32
  33 static struct dsp_platform_data dsp_pdata = {
  34         .kdev_list = LIST_HEAD_INIT(dsp_pdata.kdev_list),
  35 };
  36
  37 static struct resource omap_dsp_resources[] = {
  38         {
  39                 .name   = "dsp_mmu",
  40                 .start  = -1,
  41                 .flags  = IORESOURCE_IRQ,
  42         },
  43 };
  44
  45 static struct platform_device omap_dsp_device = {
  46         .name           = "dsp",
  47         .id             = -1,
  48         .num_resources  = ARRAY_SIZE(omap_dsp_resources),
  49         .resource       = omap_dsp_resources,
  50         .dev = {
  51                 .platform_data = &dsp_pdata,
  52         },
  53 };
  54
  55 static inline void omap_init_dsp(void)
  56 {
  57         struct resource *res;
  58         int irq;
  59
  60         if (cpu_is_omap15xx())
  61                 irq = INT_1510_DSP_MMU;
  62         else if (cpu_is_omap16xx())
  63                 irq = INT_1610_DSP_MMU;
  64         else if (cpu_is_omap24xx())
  65                 irq = INT_24XX_DSP_MMU;
  66
  67         res = platform_get_resource_byname(&omap_dsp_device,
  68                                            IORESOURCE_IRQ, "dsp_mmu");
  69         res->start = irq;
  70
  71         platform_device_register(&omap_dsp_device);
  72 }
  73
  74 int dsp_kfunc_device_register(struct dsp_kfunc_device *kdev)
  75 {
  76         static DEFINE_MUTEX(dsp_pdata_lock);
  77
  78         spin_lock_init(&kdev->lock);
  79
  80         mutex_lock(&dsp_pdata_lock);
  81         list_add_tail(&kdev->entry, &dsp_pdata.kdev_list);
  82         mutex_unlock(&dsp_pdata_lock);
  83
  84         return 0;
  85 }
  86 EXPORT_SYMBOL(dsp_kfunc_device_register);
  87
  88 #else
  89 static inline void omap_init_dsp(void) { }
  90 #endif  /* CONFIG_OMAP_DSP */
  91
  92 /*-------------------------------------------------------------------------*/
  93 #if     defined(CONFIG_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)
  94
  95 static void omap_init_kp(void)
  96 {
  97         /* 2430 and 34xx keypad is on TWL4030 */
  98         if (cpu_is_omap2430() || cpu_is_omap34xx())
  99                 return;
 100
 101         if (machine_is_omap_h2() || machine_is_omap_h3()) {
 102                 omap_cfg_reg(F18_1610_KBC0);
 103                 omap_cfg_reg(D20_1610_KBC1);
 104                 omap_cfg_reg(D19_1610_KBC2);
 105                 omap_cfg_reg(E18_1610_KBC3);
 106                 omap_cfg_reg(C21_1610_KBC4);
 107
 108                 omap_cfg_reg(G18_1610_KBR0);
 109                 omap_cfg_reg(F19_1610_KBR1);
 110                 omap_cfg_reg(H14_1610_KBR2);
 111                 omap_cfg_reg(E20_1610_KBR3);
 112                 omap_cfg_reg(E19_1610_KBR4);
 113                 omap_cfg_reg(N19_1610_KBR5);
 114         } else if (machine_is_omap_perseus2() || machine_is_omap_fsample()) {
 115                 omap_cfg_reg(E2_730_KBR0);
 116                 omap_cfg_reg(J7_730_KBR1);
 117                 omap_cfg_reg(E1_730_KBR2);
 118                 omap_cfg_reg(F3_730_KBR3);
 119                 omap_cfg_reg(D2_730_KBR4);
 120
 121                 omap_cfg_reg(C2_730_KBC0);
 122                 omap_cfg_reg(D3_730_KBC1);
 123                 omap_cfg_reg(E4_730_KBC2);
 124                 omap_cfg_reg(F4_730_KBC3);
 125                 omap_cfg_reg(E3_730_KBC4);
 126         } else if (machine_is_omap_h4()) {
 127                 omap_cfg_reg(T19_24XX_KBR0);
 128                 omap_cfg_reg(R19_24XX_KBR1);
 129                 omap_cfg_reg(V18_24XX_KBR2);
 130                 omap_cfg_reg(M21_24XX_KBR3);
 131                 omap_cfg_reg(E5__24XX_KBR4);
 132                 if (omap_has_menelaus()) {
 133                         omap_cfg_reg(B3__24XX_KBR5);
 134                         omap_cfg_reg(AA4_24XX_KBC2);
 135                         omap_cfg_reg(B13_24XX_KBC6);
 136                 } else {
 137                         omap_cfg_reg(M18_24XX_KBR5);
 138                         omap_cfg_reg(H19_24XX_KBC2);
 139                         omap_cfg_reg(N19_24XX_KBC6);
 140                 }
 141                 omap_cfg_reg(R20_24XX_KBC0);
 142                 omap_cfg_reg(M14_24XX_KBC1);
 143                 omap_cfg_reg(V17_24XX_KBC3);
 144                 omap_cfg_reg(P21_24XX_KBC4);
 145                 omap_cfg_reg(L14_24XX_KBC5);
 146         }
 147 }
 148 #else
 149 static inline void omap_init_kp(void) {}
 150 #endif
 151
 152 /*-------------------------------------------------------------------------*/
 153 #if defined(CONFIG_OMAP_MCBSP) || defined(CONFIG_OMAP_MCBSP_MODULE)
 154
 155 static struct platform_device **omap_mcbsp_devices;
 156
 157 void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
 158                                         int size)
 159 {
 160         int i;
 161
 162         omap_mcbsp_devices = kzalloc(size * sizeof(struct platform_device *),
 163                                      GFP_KERNEL);
 164         if (!omap_mcbsp_devices) {
 165                 printk(KERN_ERR "Could not register McBSP devices\n");
 166                 return;
 167         }
 168
 169         for (i = 0; i < size; i++) {
 170                 struct platform_device *new_mcbsp;
 171                 int ret;
 172
 173                 new_mcbsp = platform_device_alloc("omap-mcbsp", i + 1);
 174                 if (!new_mcbsp)
 175                         continue;
 176                 new_mcbsp->dev.platform_data = &config[i];
 177                 ret = platform_device_add(new_mcbsp);
 178                 if (ret) {
 179                         platform_device_put(new_mcbsp);
 180                         continue;
 181                 }
 182                 omap_mcbsp_devices[i] = new_mcbsp;
 183         }
 184 }
 185
 186 #else
 187 void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
 188                                         int size)
 189 {  }
 190 #endif
 191
 192 /*-------------------------------------------------------------------------*/
 193
 194 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) || \
 195         defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE)
 196
 197 #define OMAP_MMC_NR_RES         2
 198
 199 /*
 200  * Register MMC devices. Called from mach-omap1 and mach-omap2 device init.
 201  */
 202 int __init omap_mmc_add(const char *name, int id, unsigned long base,
 203                                 unsigned long size, unsigned int irq,
 204                                 struct omap_mmc_platform_data *data)
 205 {
 206         struct platform_device *pdev;
 207         struct resource res[OMAP_MMC_NR_RES];
 208         int ret;
 209
 210         pdev = platform_device_alloc(name, id);
 211         if (!pdev)
 212                 return -ENOMEM;
 213
 214         memset(res, 0, OMAP_MMC_NR_RES * sizeof(struct resource));
 215         res[0].start = base;
 216         res[0].end = base + size - 1;
 217         res[0].flags = IORESOURCE_MEM;
 218         res[1].start = res[1].end = irq;
 219         res[1].flags = IORESOURCE_IRQ;
 220
 221         ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res));
 222         if (ret == 0)
 223                 ret = platform_device_add_data(pdev, data, sizeof(*data));
 224         if (ret)
 225                 goto fail;
 226
 227         ret = platform_device_add(pdev);
 228         if (ret)
 229                 goto fail;
 230
 231         /* return device handle to board setup code */
 232         data->dev = &pdev->dev;
 233         return 0;
 234
 235 fail:
 236         platform_device_put(pdev);
 237         return ret;
 238 }
 239
 240 #endif
 241
 242 /*-------------------------------------------------------------------------*/
 243
 244 /* Numbering for the SPI-capable controllers when used for SPI:
 245  * spi          = 1
 246  * uwire        = 2
 247  * mmc1..2      = 3..4
 248  * mcbsp1..3    = 5..7
 249  */
 250
 251 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
 252
 253 #define OMAP_UWIRE_BASE         0xfffb3000
 254
 255 static struct resource uwire_resources[] = {
 256         {
 257                 .start          = OMAP_UWIRE_BASE,
 258                 .end            = OMAP_UWIRE_BASE + 0x20,
 259                 .flags          = IORESOURCE_MEM,
 260         },
 261 };
 262
 263 static struct platform_device omap_uwire_device = {
 264         .name      = "omap_uwire",
 265         .id          = -1,
 266         .num_resources  = ARRAY_SIZE(uwire_resources),
 267         .resource       = uwire_resources,
 268 };
 269
 270 static void omap_init_uwire(void)
 271 {
 272         /* FIXME define and use a boot tag; not all boards will be hooking
 273          * up devices to the microwire controller, and multi-board configs
 274          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
 275          */
 276
 277         /* board-specific code must configure chipselects (only a few
 278          * are normally used) and SCLK/SDI/SDO (each has two choices).
 279          */
 280         (void) platform_device_register(&omap_uwire_device);
 281 }
 282 #else
 283 static inline void omap_init_uwire(void) {}
 284 #endif
 285
 286 /*-------------------------------------------------------------------------*/
 287
 288 #if     defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 289
 290 static struct resource wdt_resources[] = {
 291         {
 292                 .flags          = IORESOURCE_MEM,
 293         },
 294 };
 295
 296 static struct platform_device omap_wdt_device = {
 297         .name      = "omap_wdt",
 298         .id          = -1,
 299         .num_resources  = ARRAY_SIZE(wdt_resources),
 300         .resource       = wdt_resources,
 301 };
 302
 303 static void omap_init_wdt(void)
 304 {
 305         if (cpu_is_omap16xx())
 306                 wdt_resources[0].start = 0xfffeb000;
 307         else if (cpu_is_omap2420())
 308                 wdt_resources[0].start = 0x48022000; /* WDT2 */
 309         else if (cpu_is_omap2430())
 310                 wdt_resources[0].start = 0x49016000; /* WDT2 */
 311         else if (cpu_is_omap343x())
 312                 wdt_resources[0].start = 0x48314000; /* WDT2 */
 313         else
 314                 return;
 315
 316         wdt_resources[0].end = wdt_resources[0].start + 0x4f;
 317
 318         (void) platform_device_register(&omap_wdt_device);
 319 }
 320 #else
 321 static inline void omap_init_wdt(void) {}
 322 #endif
 323
 324 /*-------------------------------------------------------------------------*/
 325
 326 #if defined(CONFIG_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_MODULE)
 327
 328 #ifdef CONFIG_ARCH_OMAP24XX
 329 #define OMAP_RNG_BASE           0x480A0000
 330 #else
 331 #define OMAP_RNG_BASE           0xfffe5000
 332 #endif
 333
 334 static struct resource rng_resources[] = {
 335         {
 336                 .start          = OMAP_RNG_BASE,
 337                 .end            = OMAP_RNG_BASE + 0x4f,
 338                 .flags          = IORESOURCE_MEM,
 339         },
 340 };
 341
 342 static struct platform_device omap_rng_device = {
 343         .name      = "omap_rng",
 344         .id          = -1,
 345         .num_resources  = ARRAY_SIZE(rng_resources),
 346         .resource       = rng_resources,
 347 };
 348
 349 static void omap_init_rng(void)
 350 {
 351         (void) platform_device_register(&omap_rng_device);
 352 }
 353 #else
 354 static inline void omap_init_rng(void) {}
 355 #endif
 356
 357 /*
 358  * This gets called after board-specific INIT_MACHINE, and initializes most
 359  * on-chip peripherals accessible on this board (except for few like USB):
 360  *
 361  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 362  *      code will have muxed GPIO pins and done "nonstandard" setup;
 363  *      that code could live in the boot loader.
 364  *  (b) Populating board-specific platform_data with the data drivers
 365  *      rely on to handle wiring variations.
 366  *  (c) Creating platform devices as meaningful on this board and
 367  *      with this kernel configuration.
 368  *
 369  * Claiming GPIOs, and setting their direction and initial values, is the
 370  * responsibility of the device drivers.  So is responding to probe().
 371  *
 372  * Board-specific knowlege like creating devices or pin setup is to be
 373  * kept out of drivers as much as possible.  In particular, pin setup
 374  * may be handled by the boot loader, and drivers should expect it will
 375  * normally have been done by the time they're probed.
 376  */
 377 static int __init omap_init_devices(void)
 378 {
 379         /* please keep these calls, and their implementations above,
 380          * in alphabetical order so they're easier to sort through.
 381          */
 382         omap_init_dsp();
 383         omap_init_kp();
 384         omap_init_uwire();
 385         omap_init_wdt();
 386         omap_init_rng();
 387         return 0;
 388 }
 389 arch_initcall(omap_init_devices);