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board-omap4panda.c

/*
 * Board support file for OMAP4430 based PandaBoard.
 *
 * Copyright (C) 2010 Texas Instruments
 *
 * Author: David Anders <x0132446@ti.com>
 *
 * Based on mach-omap2/board-4430sdp.c
 *
 * Author: Santosh Shilimkar <santosh.shilimkar@ti.com>
 *
 * Based on mach-omap2/board-3430sdp.c
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/leds.h>
#include <linux/gpio.h>
#include <linux/usb/otg.h>
#include <linux/i2c/twl.h>
#include <linux/regulator/machine.h>

#include <mach/hardware.h>
#include <mach/omap4-common.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>

#include <plat/board.h>
#include <plat/common.h>
#include <plat/usb.h>
#include <plat/mmc.h>
#include "timer-gp.h"

#include "hsmmc.h"
#include "control.h"
#include "mux.h"

#define GPIO_HUB_POWER        1
#define GPIO_HUB_NRESET       62

static struct gpio_led gpio_leds[] = {
      {
            .name             = "pandaboard::status1",
            .default_trigger  = "heartbeat",
            .gpio             = 7,
      },
      {
            .name             = "pandaboard::status2",
            .default_trigger  = "mmc0",
            .gpio             = 8,
      },
};

static struct gpio_led_platform_data gpio_led_info = {
      .leds       = gpio_leds,
      .num_leds   = ARRAY_SIZE(gpio_leds),
};

static struct platform_device leds_gpio = {
      .name = "leds-gpio",
      .id   = -1,
      .dev  = {
            .platform_data    = &gpio_led_info,
      },
};

static struct platform_device *panda_devices[] __initdata = {
      &leds_gpio,
};

static void __init omap4_panda_init_irq(void)
{
      omap2_init_common_infrastructure();
      omap2_init_common_devices(NULL, NULL);
      gic_init_irq();
}

static const struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
      .port_mode[0] = EHCI_HCD_OMAP_MODE_PHY,
      .port_mode[1] = EHCI_HCD_OMAP_MODE_UNKNOWN,
      .port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,
      .phy_reset  = false,
      .reset_gpio_port[0]  = -EINVAL,
      .reset_gpio_port[1]  = -EINVAL,
      .reset_gpio_port[2]  = -EINVAL
};

static void __init omap4_ehci_init(void)
{
      int ret;
      struct clk *phy_ref_clk;

      /* FREF_CLK3 provides the 19.2 MHz reference clock to the PHY */
      phy_ref_clk = clk_get(NULL, "auxclk3_ck");
      if (IS_ERR(phy_ref_clk)) {
            pr_err("Cannot request auxclk3\n");
            goto error1;
      }
      clk_set_rate(phy_ref_clk, 19200000);
      clk_enable(phy_ref_clk);

      /* disable the power to the usb hub prior to init */
      ret = gpio_request(GPIO_HUB_POWER, "hub_power");
      if (ret) {
            pr_err("Cannot request GPIO %d\n", GPIO_HUB_POWER);
            goto error1;
      }
      gpio_export(GPIO_HUB_POWER, 0);
      gpio_direction_output(GPIO_HUB_POWER, 0);
      gpio_set_value(GPIO_HUB_POWER, 0);

      /* reset phy+hub */
      ret = gpio_request(GPIO_HUB_NRESET, "hub_nreset");
      if (ret) {
            pr_err("Cannot request GPIO %d\n", GPIO_HUB_NRESET);
            goto error2;
      }
      gpio_export(GPIO_HUB_NRESET, 0);
      gpio_direction_output(GPIO_HUB_NRESET, 0);
      gpio_set_value(GPIO_HUB_NRESET, 0);
      gpio_set_value(GPIO_HUB_NRESET, 1);

      usb_ehci_init(&ehci_pdata);

      /* enable power to hub */
      gpio_set_value(GPIO_HUB_POWER, 1);
      return;

error2:
      gpio_free(GPIO_HUB_POWER);
error1:
      pr_err("Unable to initialize EHCI power/reset\n");
      return;

}

static struct omap_musb_board_data musb_board_data = {
      .interface_type         = MUSB_INTERFACE_UTMI,
      .mode             = MUSB_OTG,
      .power                  = 100,
};

static struct twl4030_usb_data omap4_usbphy_data = {
      .phy_init   = omap4430_phy_init,
      .phy_exit   = omap4430_phy_exit,
      .phy_power  = omap4430_phy_power,
      .phy_set_clock    = omap4430_phy_set_clk,
};

static struct omap2_hsmmc_info mmc[] = {
      {
            .mmc        = 1,
            .caps       = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
            .gpio_wp    = -EINVAL,
            .gpio_cd    = -EINVAL,
      },
      {}    /* Terminator */
};

static struct regulator_consumer_supply omap4_panda_vmmc_supply[] = {
      {
            .supply = "vmmc",
            .dev_name = "mmci-omap-hs.0",
      },
};

static int omap4_twl6030_hsmmc_late_init(struct device *dev)
{
      int ret = 0;
      struct platform_device *pdev = container_of(dev,
                        struct platform_device, dev);
      struct omap_mmc_platform_data *pdata = dev->platform_data;

      if (!pdata) {
            dev_err(dev, "%s: NULL platform data\n", __func__);
            return -EINVAL;
      }
      /* Setting MMC1 Card detect Irq */
      if (pdev->id == 0) {
            ret = twl6030_mmc_card_detect_config();
             if (ret)
                  dev_err(dev, "%s: Error card detect config(%d)\n",
                        __func__, ret);
             else
                  pdata->slots[0].card_detect = twl6030_mmc_card_detect;
      }
      return ret;
}

static __init void omap4_twl6030_hsmmc_set_late_init(struct device *dev)
{
      struct omap_mmc_platform_data *pdata;

      /* dev can be null if CONFIG_MMC_OMAP_HS is not set */
      if (!dev) {
            pr_err("Failed omap4_twl6030_hsmmc_set_late_init\n");
            return;
      }
      pdata = dev->platform_data;

      pdata->init =     omap4_twl6030_hsmmc_late_init;
}

static int __init omap4_twl6030_hsmmc_init(struct omap2_hsmmc_info *controllers)
{
      struct omap2_hsmmc_info *c;

      omap2_hsmmc_init(controllers);
      for (c = controllers; c->mmc; c++)
            omap4_twl6030_hsmmc_set_late_init(c->dev);

      return 0;
}

static struct regulator_init_data omap4_panda_vaux1 = {
      .constraints = {
            .min_uV                 = 1000000,
            .max_uV                 = 3000000,
            .apply_uV         = true,
            .valid_modes_mask = REGULATOR_MODE_NORMAL
                              | REGULATOR_MODE_STANDBY,
            .valid_ops_mask    = REGULATOR_CHANGE_VOLTAGE
                              | REGULATOR_CHANGE_MODE
                              | REGULATOR_CHANGE_STATUS,
      },
};

static struct regulator_init_data omap4_panda_vaux2 = {
      .constraints = {
            .min_uV                 = 1200000,
            .max_uV                 = 2800000,
            .apply_uV         = true,
            .valid_modes_mask = REGULATOR_MODE_NORMAL
                              | REGULATOR_MODE_STANDBY,
            .valid_ops_mask    = REGULATOR_CHANGE_VOLTAGE
                              | REGULATOR_CHANGE_MODE
                              | REGULATOR_CHANGE_STATUS,
      },
};

static struct regulator_init_data omap4_panda_vaux3 = {
      .constraints = {
            .min_uV                 = 1000000,
            .max_uV                 = 3000000,
            .apply_uV         = true,
            .valid_modes_mask = REGULATOR_MODE_NORMAL
                              | REGULATOR_MODE_STANDBY,
            .valid_ops_mask    = REGULATOR_CHANGE_VOLTAGE
                              | REGULATOR_CHANGE_MODE
                              | REGULATOR_CHANGE_STATUS,
      },
};

/* VMMC1 for MMC1 card */
static struct regulator_init_data omap4_panda_vmmc = {
      .constraints = {
            .min_uV                 = 1200000,
            .max_uV                 = 3000000,
            .apply_uV         = true,
            .valid_modes_mask = REGULATOR_MODE_NORMAL
                              | REGULATOR_MODE_STANDBY,
            .valid_ops_mask    = REGULATOR_CHANGE_VOLTAGE
                              | REGULATOR_CHANGE_MODE
                              | REGULATOR_CHANGE_STATUS,
      },
      .num_consumer_supplies  = 1,
      .consumer_supplies      = omap4_panda_vmmc_supply,
};

static struct regulator_init_data omap4_panda_vpp = {
      .constraints = {
            .min_uV                 = 1800000,
            .max_uV                 = 2500000,
            .apply_uV         = true,
            .valid_modes_mask = REGULATOR_MODE_NORMAL
                              | REGULATOR_MODE_STANDBY,
            .valid_ops_mask    = REGULATOR_CHANGE_VOLTAGE
                              | REGULATOR_CHANGE_MODE
                              | REGULATOR_CHANGE_STATUS,
      },
};

static struct regulator_init_data omap4_panda_vusim = {
      .constraints = {
            .min_uV                 = 1200000,
            .max_uV                 = 2900000,
            .apply_uV         = true,
            .valid_modes_mask = REGULATOR_MODE_NORMAL
                              | REGULATOR_MODE_STANDBY,
            .valid_ops_mask    = REGULATOR_CHANGE_VOLTAGE
                              | REGULATOR_CHANGE_MODE
                              | REGULATOR_CHANGE_STATUS,
      },
};

static struct regulator_init_data omap4_panda_vana = {
      .constraints = {
            .min_uV                 = 2100000,
            .max_uV                 = 2100000,
            .apply_uV         = true,
            .valid_modes_mask = REGULATOR_MODE_NORMAL
                              | REGULATOR_MODE_STANDBY,
            .valid_ops_mask    = REGULATOR_CHANGE_MODE
                              | REGULATOR_CHANGE_STATUS,
      },
};

static struct regulator_init_data omap4_panda_vcxio = {
      .constraints = {
            .min_uV                 = 1800000,
            .max_uV                 = 1800000,
            .apply_uV         = true,
            .valid_modes_mask = REGULATOR_MODE_NORMAL
                              | REGULATOR_MODE_STANDBY,
            .valid_ops_mask    = REGULATOR_CHANGE_MODE
                              | REGULATOR_CHANGE_STATUS,
      },
};

static struct regulator_init_data omap4_panda_vdac = {
      .constraints = {
            .min_uV                 = 1800000,
            .max_uV                 = 1800000,
            .apply_uV         = true,
            .valid_modes_mask = REGULATOR_MODE_NORMAL
                              | REGULATOR_MODE_STANDBY,
            .valid_ops_mask    = REGULATOR_CHANGE_MODE
                              | REGULATOR_CHANGE_STATUS,
      },
};

static struct regulator_init_data omap4_panda_vusb = {
      .constraints = {
            .min_uV                 = 3300000,
            .max_uV                 = 3300000,
            .apply_uV         = true,
            .valid_modes_mask = REGULATOR_MODE_NORMAL
                              | REGULATOR_MODE_STANDBY,
            .valid_ops_mask    =    REGULATOR_CHANGE_MODE
                              | REGULATOR_CHANGE_STATUS,
      },
};

static struct twl4030_platform_data omap4_panda_twldata = {
      .irq_base   = TWL6030_IRQ_BASE,
      .irq_end    = TWL6030_IRQ_END,

      /* Regulators */
      .vmmc       = &omap4_panda_vmmc,
      .vpp        = &omap4_panda_vpp,
      .vusim            = &omap4_panda_vusim,
      .vana       = &omap4_panda_vana,
      .vcxio            = &omap4_panda_vcxio,
      .vdac       = &omap4_panda_vdac,
      .vusb       = &omap4_panda_vusb,
      .vaux1            = &omap4_panda_vaux1,
      .vaux2            = &omap4_panda_vaux2,
      .vaux3            = &omap4_panda_vaux3,
      .usb        = &omap4_usbphy_data,
};

static struct i2c_board_info __initdata omap4_panda_i2c_boardinfo[] = {
      {
            I2C_BOARD_INFO("twl6030", 0x48),
            .flags = I2C_CLIENT_WAKE,
            .irq = OMAP44XX_IRQ_SYS_1N,
            .platform_data = &omap4_panda_twldata,
      },
};
static int __init omap4_panda_i2c_init(void)
{
      /*
       * Phoenix Audio IC needs I2C1 to
       * start with 400 KHz or less
       */
      omap_register_i2c_bus(1, 400, omap4_panda_i2c_boardinfo,
                  ARRAY_SIZE(omap4_panda_i2c_boardinfo));
      omap_register_i2c_bus(2, 400, NULL, 0);
      omap_register_i2c_bus(3, 400, NULL, 0);
      omap_register_i2c_bus(4, 400, NULL, 0);
      return 0;
}

#ifdef CONFIG_OMAP_MUX
static struct omap_board_mux board_mux[] __initdata = {
      { .reg_offset = OMAP_MUX_TERMINATOR },
};
#else
#define board_mux NULL
#endif

static void __init omap4_panda_init(void)
{
      int package = OMAP_PACKAGE_CBS;

      if (omap_rev() == OMAP4430_REV_ES1_0)
            package = OMAP_PACKAGE_CBL;
      omap4_mux_init(board_mux, package);

      omap4_panda_i2c_init();
      platform_add_devices(panda_devices, ARRAY_SIZE(panda_devices));
      omap_serial_init();
      omap4_twl6030_hsmmc_init(mmc);
      /* OMAP4 Panda uses internal transceiver so register nop transceiver */
      usb_nop_xceiv_register();
      omap4_ehci_init();
      usb_musb_init(&musb_board_data);
}

static void __init omap4_panda_map_io(void)
{
      omap2_set_globals_443x();
      omap44xx_map_common_io();
}

MACHINE_START(OMAP4_PANDA, "OMAP4 Panda board")
      /* Maintainer: David Anders - Texas Instruments Inc */
      .boot_params      = 0x80000100,
      .reserve    = omap_reserve,
      .map_io           = omap4_panda_map_io,
      .init_irq   = omap4_panda_init_irq,
      .init_machine     = omap4_panda_init,
      .timer            = &omap_timer,
MACHINE_END

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