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devices.c

/*
 * linux/arch/arm/plat-omap/devices.c
 *
 * Common platform device setup/initialization for OMAP1 and OMAP2
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/io.h>

#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/map.h>

#include <mach/tc.h>
#include <mach/control.h>
#include <mach/board.h>
#include <mach/mmc.h>
#include <mach/mux.h>
#include <mach/gpio.h>
#include <mach/menelaus.h>
#include <mach/mcbsp.h>
#include <mach/dsp_common.h>

#if   defined(CONFIG_OMAP_DSP) || defined(CONFIG_OMAP_DSP_MODULE)

static struct dsp_platform_data dsp_pdata = {
      .kdev_list = LIST_HEAD_INIT(dsp_pdata.kdev_list),
};

static struct resource omap_dsp_resources[] = {
      {
            .name = "dsp_mmu",
            .start      = -1,
            .flags      = IORESOURCE_IRQ,
      },
};

static struct platform_device omap_dsp_device = {
      .name       = "dsp",
      .id         = -1,
      .num_resources    = ARRAY_SIZE(omap_dsp_resources),
      .resource   = omap_dsp_resources,
      .dev = {
            .platform_data = &dsp_pdata,
      },
};

static inline void omap_init_dsp(void)
{
      struct resource *res;
      int irq;

      if (cpu_is_omap15xx())
            irq = INT_1510_DSP_MMU;
      else if (cpu_is_omap16xx())
            irq = INT_1610_DSP_MMU;
      else if (cpu_is_omap24xx())
            irq = INT_24XX_DSP_MMU;

      res = platform_get_resource_byname(&omap_dsp_device,
                                 IORESOURCE_IRQ, "dsp_mmu");
      res->start = irq;

      platform_device_register(&omap_dsp_device);
}

int dsp_kfunc_device_register(struct dsp_kfunc_device *kdev)
{
      static DEFINE_MUTEX(dsp_pdata_lock);

      spin_lock_init(&kdev->lock);

      mutex_lock(&dsp_pdata_lock);
      list_add_tail(&kdev->entry, &dsp_pdata.kdev_list);
      mutex_unlock(&dsp_pdata_lock);

      return 0;
}
EXPORT_SYMBOL(dsp_kfunc_device_register);

#else
static inline void omap_init_dsp(void) { }
#endif      /* CONFIG_OMAP_DSP */

/*-------------------------------------------------------------------------*/
#if   defined(CONFIG_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)

static void omap_init_kp(void)
{
      /* 2430 and 34xx keypad is on TWL4030 */
      if (cpu_is_omap2430() || cpu_is_omap34xx())
            return;

      if (machine_is_omap_h2() || machine_is_omap_h3()) {
            omap_cfg_reg(F18_1610_KBC0);
            omap_cfg_reg(D20_1610_KBC1);
            omap_cfg_reg(D19_1610_KBC2);
            omap_cfg_reg(E18_1610_KBC3);
            omap_cfg_reg(C21_1610_KBC4);

            omap_cfg_reg(G18_1610_KBR0);
            omap_cfg_reg(F19_1610_KBR1);
            omap_cfg_reg(H14_1610_KBR2);
            omap_cfg_reg(E20_1610_KBR3);
            omap_cfg_reg(E19_1610_KBR4);
            omap_cfg_reg(N19_1610_KBR5);
      } else if (machine_is_omap_perseus2() || machine_is_omap_fsample()) {
            omap_cfg_reg(E2_730_KBR0);
            omap_cfg_reg(J7_730_KBR1);
            omap_cfg_reg(E1_730_KBR2);
            omap_cfg_reg(F3_730_KBR3);
            omap_cfg_reg(D2_730_KBR4);

            omap_cfg_reg(C2_730_KBC0);
            omap_cfg_reg(D3_730_KBC1);
            omap_cfg_reg(E4_730_KBC2);
            omap_cfg_reg(F4_730_KBC3);
            omap_cfg_reg(E3_730_KBC4);
      } else if (machine_is_omap_h4()) {
            omap_cfg_reg(T19_24XX_KBR0);
            omap_cfg_reg(R19_24XX_KBR1);
            omap_cfg_reg(V18_24XX_KBR2);
            omap_cfg_reg(M21_24XX_KBR3);
            omap_cfg_reg(E5__24XX_KBR4);
            if (omap_has_menelaus()) {
                  omap_cfg_reg(B3__24XX_KBR5);
                  omap_cfg_reg(AA4_24XX_KBC2);
                  omap_cfg_reg(B13_24XX_KBC6);
            } else {
                  omap_cfg_reg(M18_24XX_KBR5);
                  omap_cfg_reg(H19_24XX_KBC2);
                  omap_cfg_reg(N19_24XX_KBC6);
            }
            omap_cfg_reg(R20_24XX_KBC0);
            omap_cfg_reg(M14_24XX_KBC1);
            omap_cfg_reg(V17_24XX_KBC3);
            omap_cfg_reg(P21_24XX_KBC4);
            omap_cfg_reg(L14_24XX_KBC5);
      }
}
#else
static inline void omap_init_kp(void) {}
#endif

/*-------------------------------------------------------------------------*/
#if defined(CONFIG_OMAP_MCBSP) || defined(CONFIG_OMAP_MCBSP_MODULE)

static struct platform_device **omap_mcbsp_devices;

void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
                              int size)
{
      int i;

      omap_mcbsp_devices = kzalloc(size * sizeof(struct platform_device *),
                             GFP_KERNEL);
      if (!omap_mcbsp_devices) {
            printk(KERN_ERR "Could not register McBSP devices\n");
            return;
      }

      for (i = 0; i < size; i++) {
            struct platform_device *new_mcbsp;
            int ret;

            new_mcbsp = platform_device_alloc("omap-mcbsp", i + 1);
            if (!new_mcbsp)
                  continue;
            new_mcbsp->dev.platform_data = &config[i];
            ret = platform_device_add(new_mcbsp);
            if (ret) {
                  platform_device_put(new_mcbsp);
                  continue;
            }
            omap_mcbsp_devices[i] = new_mcbsp;
      }
}

#else
void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
                              int size)
{  }
#endif

/*-------------------------------------------------------------------------*/

#if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) || \
      defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE)

#define OMAP_MMC_NR_RES       2

/*
 * Register MMC devices. Called from mach-omap1 and mach-omap2 device init.
 */
int __init omap_mmc_add(const char *name, int id, unsigned long base,
                        unsigned long size, unsigned int irq,
                        struct omap_mmc_platform_data *data)
{
      struct platform_device *pdev;
      struct resource res[OMAP_MMC_NR_RES];
      int ret;

      pdev = platform_device_alloc(name, id);
      if (!pdev)
            return -ENOMEM;

      memset(res, 0, OMAP_MMC_NR_RES * sizeof(struct resource));
      res[0].start = base;
      res[0].end = base + size - 1;
      res[0].flags = IORESOURCE_MEM;
      res[1].start = res[1].end = irq;
      res[1].flags = IORESOURCE_IRQ;

      ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res));
      if (ret == 0)
            ret = platform_device_add_data(pdev, data, sizeof(*data));
      if (ret)
            goto fail;

      ret = platform_device_add(pdev);
      if (ret)
            goto fail;

      /* return device handle to board setup code */
      data->dev = &pdev->dev;
      return 0;

fail:
      platform_device_put(pdev);
      return ret;
}

#endif

/*-------------------------------------------------------------------------*/

/* Numbering for the SPI-capable controllers when used for SPI:
 * spi            = 1
 * uwire    = 2
 * mmc1..2  = 3..4
 * mcbsp1..3      = 5..7
 */

#if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)

#define     OMAP_UWIRE_BASE         0xfffb3000

static struct resource uwire_resources[] = {
      {
            .start            = OMAP_UWIRE_BASE,
            .end        = OMAP_UWIRE_BASE + 0x20,
            .flags            = IORESOURCE_MEM,
      },
};

static struct platform_device omap_uwire_device = {
      .name    = "omap_uwire",
      .id        = -1,
      .num_resources    = ARRAY_SIZE(uwire_resources),
      .resource   = uwire_resources,
};

static void omap_init_uwire(void)
{
      /* FIXME define and use a boot tag; not all boards will be hooking
       * up devices to the microwire controller, and multi-board configs
       * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
       */

      /* board-specific code must configure chipselects (only a few
       * are normally used) and SCLK/SDI/SDO (each has two choices).
       */
      (void) platform_device_register(&omap_uwire_device);
}
#else
static inline void omap_init_uwire(void) {}
#endif

/*-------------------------------------------------------------------------*/

#if   defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)

static struct resource wdt_resources[] = {
      {
            .flags            = IORESOURCE_MEM,
      },
};

static struct platform_device omap_wdt_device = {
      .name    = "omap_wdt",
      .id        = -1,
      .num_resources    = ARRAY_SIZE(wdt_resources),
      .resource   = wdt_resources,
};

static void omap_init_wdt(void)
{
      if (cpu_is_omap16xx())
            wdt_resources[0].start = 0xfffeb000;
      else if (cpu_is_omap2420())
            wdt_resources[0].start = 0x48022000; /* WDT2 */
      else if (cpu_is_omap2430())
            wdt_resources[0].start = 0x49016000; /* WDT2 */
      else if (cpu_is_omap343x())
            wdt_resources[0].start = 0x48314000; /* WDT2 */
      else if (cpu_is_omap44xx())
            wdt_resources[0].start = 0x4a314000;
      else
            return;

      wdt_resources[0].end = wdt_resources[0].start + 0x4f;

      (void) platform_device_register(&omap_wdt_device);
}
#else
static inline void omap_init_wdt(void) {}
#endif

/*-------------------------------------------------------------------------*/

#if defined(CONFIG_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_MODULE)

#ifdef CONFIG_ARCH_OMAP24XX
#define     OMAP_RNG_BASE           0x480A0000
#else
#define     OMAP_RNG_BASE           0xfffe5000
#endif

static struct resource rng_resources[] = {
      {
            .start            = OMAP_RNG_BASE,
            .end        = OMAP_RNG_BASE + 0x4f,
            .flags            = IORESOURCE_MEM,
      },
};

static struct platform_device omap_rng_device = {
      .name    = "omap_rng",
      .id        = -1,
      .num_resources    = ARRAY_SIZE(rng_resources),
      .resource   = rng_resources,
};

static void omap_init_rng(void)
{
      (void) platform_device_register(&omap_rng_device);
}
#else
static inline void omap_init_rng(void) {}
#endif

/*
 * This gets called after board-specific INIT_MACHINE, and initializes most
 * on-chip peripherals accessible on this board (except for few like USB):
 *
 *  (a) Does any "standard config" pin muxing needed.  Board-specific
 *    code will have muxed GPIO pins and done "nonstandard" setup;
 *    that code could live in the boot loader.
 *  (b) Populating board-specific platform_data with the data drivers
 *    rely on to handle wiring variations.
 *  (c) Creating platform devices as meaningful on this board and
 *    with this kernel configuration.
 *
 * Claiming GPIOs, and setting their direction and initial values, is the
 * responsibility of the device drivers.  So is responding to probe().
 *
 * Board-specific knowlege like creating devices or pin setup is to be
 * kept out of drivers as much as possible.  In particular, pin setup
 * may be handled by the boot loader, and drivers should expect it will
 * normally have been done by the time they're probed.
 */
static int __init omap_init_devices(void)
{
      /* please keep these calls, and their implementations above,
       * in alphabetical order so they're easier to sort through.
       */
      omap_init_dsp();
      omap_init_kp();
      omap_init_uwire();
      omap_init_wdt();
      omap_init_rng();
      return 0;
}
arch_initcall(omap_init_devices);

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