linux-vybrid_public/arch/arm/mach-omap2/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_PERIPHERAL,
	.power			= 100,
};

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,
};

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();
	/* FIXME: allow multi-omap to boot until musb is updated for omap4 */
	if (!cpu_is_omap44xx())
		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