LXR linux/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
  34static struct dsp_platform_data dsp_pdata = {
  35        .kdev_list = LIST_HEAD_INIT(dsp_pdata.kdev_list),
  36};
  37
  38static struct resource omap_dsp_resources[] = {
  39        {
  40                .name   = "dsp_mmu",
  41                .start  = -1,
  42                .flags  = IORESOURCE_IRQ,
  43        },
  44};
  45
  46static 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
  56static 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
  75int 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}
  87EXPORT_SYMBOL(dsp_kfunc_device_register);
  88
  89#else
  90static 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
  96static 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
 150static inline void omap_init_kp(void) {}
 151#endif
 152
 153/*-------------------------------------------------------------------------*/
 154#if defined(CONFIG_OMAP_MCBSP) || defined(CONFIG_OMAP_MCBSP_MODULE)
 155
 156static struct platform_device **omap_mcbsp_devices;
 157
 158void 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
 188void 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 */
 203int __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
 236fail:
 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
 256static struct resource uwire_resources[] = {
 257        {
 258                .start          = OMAP_UWIRE_BASE,
 259                .end            = OMAP_UWIRE_BASE + 0x20,
 260                .flags          = IORESOURCE_MEM,
 261        },
 262};
 263
 264static 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
 271static 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
 284static inline void omap_init_uwire(void) {}
 285#endif
 286
 287/*-------------------------------------------------------------------------*/
 288
 289#if     defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 290
 291static struct resource wdt_resources[] = {
 292        {
 293                .flags          = IORESOURCE_MEM,
 294        },
 295};
 296
 297static 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
 304static 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 if (cpu_is_omap44xx())
 315                wdt_resources[0].start = 0x4a314000;
 316        else
 317                return;
 318
 319        wdt_resources[0].end = wdt_resources[0].start + 0x4f;
 320
 321        (void) platform_device_register(&omap_wdt_device);
 322}
 323#else
 324static inline void omap_init_wdt(void) {}
 325#endif
 326
 327/*-------------------------------------------------------------------------*/
 328
 329#if defined(CONFIG_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_MODULE)
 330
 331#ifdef CONFIG_ARCH_OMAP24XX
 332#define OMAP_RNG_BASE           0x480A0000
 333#else
 334#define OMAP_RNG_BASE           0xfffe5000
 335#endif
 336
 337static struct resource rng_resources[] = {
 338        {
 339                .start          = OMAP_RNG_BASE,
 340                .end            = OMAP_RNG_BASE + 0x4f,
 341                .flags          = IORESOURCE_MEM,
 342        },
 343};
 344
 345static struct platform_device omap_rng_device = {
 346        .name      = "omap_rng",
 347        .id          = -1,
 348        .num_resources  = ARRAY_SIZE(rng_resources),
 349        .resource       = rng_resources,
 350};
 351
 352static void omap_init_rng(void)
 353{
 354        (void) platform_device_register(&omap_rng_device);
 355}
 356#else
 357static inline void omap_init_rng(void) {}
 358#endif
 359
 360/*
 361 * This gets called after board-specific INIT_MACHINE, and initializes most
 362 * on-chip peripherals accessible on this board (except for few like USB):
 363 *
 364 *  (a) Does any "standard config" pin muxing needed.  Board-specific
 365 *      code will have muxed GPIO pins and done "nonstandard" setup;
 366 *      that code could live in the boot loader.
 367 *  (b) Populating board-specific platform_data with the data drivers
 368 *      rely on to handle wiring variations.
 369 *  (c) Creating platform devices as meaningful on this board and
 370 *      with this kernel configuration.
 371 *
 372 * Claiming GPIOs, and setting their direction and initial values, is the
 373 * responsibility of the device drivers.  So is responding to probe().
 374 *
 375 * Board-specific knowlege like creating devices or pin setup is to be
 376 * kept out of drivers as much as possible.  In particular, pin setup
 377 * may be handled by the boot loader, and drivers should expect it will
 378 * normally have been done by the time they're probed.
 379 */
 380static int __init omap_init_devices(void)
 381{
 382        /* please keep these calls, and their implementations above,
 383         * in alphabetical order so they're easier to sort through.
 384         */
 385        omap_init_dsp();
 386        omap_init_kp();
 387        omap_init_uwire();
 388        omap_init_wdt();
 389        omap_init_rng();
 390        return 0;
 391}
 392arch_initcall(omap_init_devices);
 393