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 <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
  96 #if defined(CONFIG_OMAP_MCBSP) || defined(CONFIG_OMAP_MCBSP_MODULE)
  97
  98 static struct platform_device **omap_mcbsp_devices;
  99
 100 void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
 101                                         int size)
 102 {
 103         int i;
 104
 105         omap_mcbsp_devices = kzalloc(size * sizeof(struct platform_device *),
 106                                      GFP_KERNEL);
 107         if (!omap_mcbsp_devices) {
 108                 printk(KERN_ERR "Could not register McBSP devices\n");
 109                 return;
 110         }
 111
 112         for (i = 0; i < size; i++) {
 113                 struct platform_device *new_mcbsp;
 114                 int ret;
 115
 116                 new_mcbsp = platform_device_alloc("omap-mcbsp", i + 1);
 117                 if (!new_mcbsp)
 118                         continue;
 119                 new_mcbsp->dev.platform_data = &config[i];
 120                 ret = platform_device_add(new_mcbsp);
 121                 if (ret) {
 122                         platform_device_put(new_mcbsp);
 123                         continue;
 124                 }
 125                 omap_mcbsp_devices[i] = new_mcbsp;
 126         }
 127 }
 128
 129 #else
 130 void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
 131                                         int size)
 132 {  }
 133 #endif
 134
 135 /*-------------------------------------------------------------------------*/
 136
 137 #if defined(CONFIG_SND_OMAP_SOC_MCPDM) || \
 138                 defined(CONFIG_SND_OMAP_SOC_MCPDM_MODULE)
 139
 140 static struct resource mcpdm_resources[] = {
 141         {
 142                 .name           = "mcpdm_mem",
 143                 .start          = OMAP44XX_MCPDM_BASE,
 144                 .end            = OMAP44XX_MCPDM_BASE + SZ_4K,
 145                 .flags          = IORESOURCE_MEM,
 146         },
 147         {
 148                 .name           = "mcpdm_irq",
 149                 .start          = OMAP44XX_IRQ_MCPDM,
 150                 .end            = OMAP44XX_IRQ_MCPDM,
 151                 .flags          = IORESOURCE_IRQ,
 152         },
 153 };
 154
 155 static struct platform_device omap_mcpdm_device = {
 156         .name           = "omap-mcpdm",
 157         .id             = -1,
 158         .num_resources  = ARRAY_SIZE(mcpdm_resources),
 159         .resource       = mcpdm_resources,
 160 };
 161
 162 static void omap_init_mcpdm(void)
 163 {
 164         (void) platform_device_register(&omap_mcpdm_device);
 165 }
 166 #else
 167 static inline void omap_init_mcpdm(void) {}
 168 #endif
 169
 170 /*-------------------------------------------------------------------------*/
 171
 172 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) || \
 173         defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE)
 174
 175 #define OMAP_MMC_NR_RES         2
 176
 177 /*
 178  * Register MMC devices. Called from mach-omap1 and mach-omap2 device init.
 179  */
 180 int __init omap_mmc_add(const char *name, int id, unsigned long base,
 181                                 unsigned long size, unsigned int irq,
 182                                 struct omap_mmc_platform_data *data)
 183 {
 184         struct platform_device *pdev;
 185         struct resource res[OMAP_MMC_NR_RES];
 186         int ret;
 187
 188         pdev = platform_device_alloc(name, id);
 189         if (!pdev)
 190                 return -ENOMEM;
 191
 192         memset(res, 0, OMAP_MMC_NR_RES * sizeof(struct resource));
 193         res[0].start = base;
 194         res[0].end = base + size - 1;
 195         res[0].flags = IORESOURCE_MEM;
 196         res[1].start = res[1].end = irq;
 197         res[1].flags = IORESOURCE_IRQ;
 198
 199         ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res));
 200         if (ret == 0)
 201                 ret = platform_device_add_data(pdev, data, sizeof(*data));
 202         if (ret)
 203                 goto fail;
 204
 205         ret = platform_device_add(pdev);
 206         if (ret)
 207                 goto fail;
 208
 209         /* return device handle to board setup code */
 210         data->dev = &pdev->dev;
 211         return 0;
 212
 213 fail:
 214         platform_device_put(pdev);
 215         return ret;
 216 }
 217
 218 #endif
 219
 220 /*-------------------------------------------------------------------------*/
 221
 222 #if defined(CONFIG_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_MODULE)
 223
 224 #ifdef CONFIG_ARCH_OMAP2
 225 #define OMAP_RNG_BASE           0x480A0000
 226 #else
 227 #define OMAP_RNG_BASE           0xfffe5000
 228 #endif
 229
 230 static struct resource rng_resources[] = {
 231         {
 232                 .start          = OMAP_RNG_BASE,
 233                 .end            = OMAP_RNG_BASE + 0x4f,
 234                 .flags          = IORESOURCE_MEM,
 235         },
 236 };
 237
 238 static struct platform_device omap_rng_device = {
 239         .name           = "omap_rng",
 240         .id             = -1,
 241         .num_resources  = ARRAY_SIZE(rng_resources),
 242         .resource       = rng_resources,
 243 };
 244
 245 static void omap_init_rng(void)
 246 {
 247         (void) platform_device_register(&omap_rng_device);
 248 }
 249 #else
 250 static inline void omap_init_rng(void) {}
 251 #endif
 252
 253 /*-------------------------------------------------------------------------*/
 254
 255 /* Numbering for the SPI-capable controllers when used for SPI:
 256  * spi          = 1
 257  * uwire        = 2
 258  * mmc1..2      = 3..4
 259  * mcbsp1..3    = 5..7
 260  */
 261
 262 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
 263
 264 #define OMAP_UWIRE_BASE         0xfffb3000
 265
 266 static struct resource uwire_resources[] = {
 267         {
 268                 .start          = OMAP_UWIRE_BASE,
 269                 .end            = OMAP_UWIRE_BASE + 0x20,
 270                 .flags          = IORESOURCE_MEM,
 271         },
 272 };
 273
 274 static struct platform_device omap_uwire_device = {
 275         .name      = "omap_uwire",
 276         .id          = -1,
 277         .num_resources  = ARRAY_SIZE(uwire_resources),
 278         .resource       = uwire_resources,
 279 };
 280
 281 static void omap_init_uwire(void)
 282 {
 283         /* FIXME define and use a boot tag; not all boards will be hooking
 284          * up devices to the microwire controller, and multi-board configs
 285          * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
 286          */
 287
 288         /* board-specific code must configure chipselects (only a few
 289          * are normally used) and SCLK/SDI/SDO (each has two choices).
 290          */
 291         (void) platform_device_register(&omap_uwire_device);
 292 }
 293 #else
 294 static inline void omap_init_uwire(void) {}
 295 #endif
 296
 297 /*-------------------------------------------------------------------------*/
 298
 299 #if     defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 300
 301 static struct resource wdt_resources[] = {
 302         {
 303                 .flags          = IORESOURCE_MEM,
 304         },
 305 };
 306
 307 static struct platform_device omap_wdt_device = {
 308         .name      = "omap_wdt",
 309         .id          = -1,
 310         .num_resources  = ARRAY_SIZE(wdt_resources),
 311         .resource       = wdt_resources,
 312 };
 313
 314 static void omap_init_wdt(void)
 315 {
 316         if (cpu_is_omap16xx())
 317                 wdt_resources[0].start = 0xfffeb000;
 318         else if (cpu_is_omap2420())
 319                 wdt_resources[0].start = 0x48022000; /* WDT2 */
 320         else if (cpu_is_omap2430())
 321                 wdt_resources[0].start = 0x49016000; /* WDT2 */
 322         else if (cpu_is_omap343x())
 323                 wdt_resources[0].start = 0x48314000; /* WDT2 */
 324         else if (cpu_is_omap44xx())
 325                 wdt_resources[0].start = 0x4a314000;
 326         else
 327                 return;
 328
 329         wdt_resources[0].end = wdt_resources[0].start + 0x4f;
 330
 331         (void) platform_device_register(&omap_wdt_device);
 332 }
 333 #else
 334 static inline void omap_init_wdt(void) {}
 335 #endif
 336
 337 /*
 338  * This gets called after board-specific INIT_MACHINE, and initializes most
 339  * on-chip peripherals accessible on this board (except for few like USB):
 340  *
 341  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 342  *      code will have muxed GPIO pins and done "nonstandard" setup;
 343  *      that code could live in the boot loader.
 344  *  (b) Populating board-specific platform_data with the data drivers
 345  *      rely on to handle wiring variations.
 346  *  (c) Creating platform devices as meaningful on this board and
 347  *      with this kernel configuration.
 348  *
 349  * Claiming GPIOs, and setting their direction and initial values, is the
 350  * responsibility of the device drivers.  So is responding to probe().
 351  *
 352  * Board-specific knowlege like creating devices or pin setup is to be
 353  * kept out of drivers as much as possible.  In particular, pin setup
 354  * may be handled by the boot loader, and drivers should expect it will
 355  * normally have been done by the time they're probed.
 356  */
 357 static int __init omap_init_devices(void)
 358 {
 359         /* please keep these calls, and their implementations above,
 360          * in alphabetical order so they're easier to sort through.
 361          */
 362         omap_init_dsp();
 363         omap_init_rng();
 364         omap_init_mcpdm();
 365         omap_init_uwire();
 366         omap_init_wdt();
 367         return 0;
 368 }
 369 arch_initcall(omap_init_devices);