linux-vybrid_public/arch/arm/mach-ux500/board-mop500.c

/*
 * Copyright (C) 2008-2009 ST-Ericsson
 *
 * Author: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com>
 *
 * 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/interrupt.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/i2c.h>
#include <linux/gpio.h>
#include <linux/amba/bus.h>
#include <linux/amba/pl022.h>
#include <linux/spi/spi.h>
#include <linux/mfd/ab8500.h>
#include <linux/mfd/tc3589x.h>
#include <linux/input.h>
#include <linux/gpio_keys.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>

#include <plat/pincfg.h>
#include <plat/i2c.h>

#include <mach/hardware.h>
#include <mach/setup.h>
#include <mach/devices.h>
#include <mach/irqs.h>

#include "devices-db8500.h"
#include "pins-db8500.h"
#include "board-mop500.h"
#include "board-mop500-regulators.h"

static pin_cfg_t mop500_pins[] = {
	/* SSP0 */
	GPIO143_SSP0_CLK,
	GPIO144_SSP0_FRM,
	GPIO145_SSP0_RXD,
	GPIO146_SSP0_TXD,

	/* I2C */
	GPIO147_I2C0_SCL,
	GPIO148_I2C0_SDA,
	GPIO16_I2C1_SCL,
	GPIO17_I2C1_SDA,
	GPIO10_I2C2_SDA,
	GPIO11_I2C2_SCL,
	GPIO229_I2C3_SDA,
	GPIO230_I2C3_SCL,

	/* SKE keypad */
	GPIO153_KP_I7,
	GPIO154_KP_I6,
	GPIO155_KP_I5,
	GPIO156_KP_I4,
	GPIO157_KP_O7,
	GPIO158_KP_O6,
	GPIO159_KP_O5,
	GPIO160_KP_O4,
	GPIO161_KP_I3,
	GPIO162_KP_I2,
	GPIO163_KP_I1,
	GPIO164_KP_I0,
	GPIO165_KP_O3,
	GPIO166_KP_O2,
	GPIO167_KP_O1,
	GPIO168_KP_O0,

	/* GPIO_EXP_INT */
	GPIO217_GPIO,

	/* STMPE1601 IRQ */
	GPIO218_GPIO    | PIN_INPUT_PULLUP,

	/* touch screen */
	GPIO84_GPIO	| PIN_INPUT_PULLUP,
};

static struct ab8500_platform_data ab8500_platdata = {
	.irq_base	= MOP500_AB8500_IRQ_BASE,
	.regulator	= ab8500_regulators,
	.num_regulator	= ARRAY_SIZE(ab8500_regulators),
};

static struct resource ab8500_resources[] = {
	[0] = {
		.start	= IRQ_DB8500_AB8500,
		.end	= IRQ_DB8500_AB8500,
		.flags	= IORESOURCE_IRQ
	}
};

struct platform_device ab8500_device = {
	.name = "ab8500-i2c",
	.id = 0,
	.dev = {
		.platform_data = &ab8500_platdata,
	},
	.num_resources = 1,
	.resource = ab8500_resources,
};

static struct pl022_ssp_controller ssp0_platform_data = {
	.bus_id = 0,
	/* pl022 not yet supports dma */
	.enable_dma = 0,
	/* on this platform, gpio 31,142,144,214 &
	 * 224 are connected as chip selects
	 */
	.num_chipselect = 5,
};

/*
 * TC35892
 */

static void mop500_tc35892_init(struct tc3589x *tc3589x, unsigned int base)
{
	mop500_sdi_tc35892_init();
}

static struct tc3589x_gpio_platform_data mop500_tc35892_gpio_data = {
	.gpio_base	= MOP500_EGPIO(0),
	.setup		= mop500_tc35892_init,
};

static struct tc3589x_platform_data mop500_tc35892_data = {
	.block		= TC3589x_BLOCK_GPIO,
	.gpio		= &mop500_tc35892_gpio_data,
	.irq_base	= MOP500_EGPIO_IRQ_BASE,
};

static struct i2c_board_info mop500_i2c0_devices[] = {
	{
		I2C_BOARD_INFO("tc3589x", 0x42),
		.irq            = NOMADIK_GPIO_TO_IRQ(217),
		.platform_data  = &mop500_tc35892_data,
	},
};

#define U8500_I2C_CONTROLLER(id, _slsu, _tft, _rft, clk, _sm) \
static struct nmk_i2c_controller u8500_i2c##id##_data = { \
	/*				\
	 * slave data setup time, which is	\
	 * 250 ns,100ns,10ns which is 14,6,2	\
	 * respectively for a 48 Mhz	\
	 * i2c clock			\
	 */				\
	.slsu		= _slsu,	\
	/* Tx FIFO threshold */		\
	.tft		= _tft,		\
	/* Rx FIFO threshold */		\
	.rft		= _rft,		\
	/* std. mode operation */	\
	.clk_freq	= clk,		\
	.sm		= _sm,		\
}

/*
 * The board uses 4 i2c controllers, initialize all of
 * them with slave data setup time of 250 ns,
 * Tx & Rx FIFO threshold values as 1 and standard
 * mode of operation
 */
U8500_I2C_CONTROLLER(0, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
U8500_I2C_CONTROLLER(1, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
U8500_I2C_CONTROLLER(2,	0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
U8500_I2C_CONTROLLER(3,	0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);

static void __init mop500_i2c_init(void)
{
	db8500_add_i2c0(&u8500_i2c0_data);
	db8500_add_i2c1(&u8500_i2c1_data);
	db8500_add_i2c2(&u8500_i2c2_data);
	db8500_add_i2c3(&u8500_i2c3_data);
}

static struct gpio_keys_button mop500_gpio_keys[] = {
	{
		.desc			= "SFH7741 Proximity Sensor",
		.type			= EV_SW,
		.code			= SW_FRONT_PROXIMITY,
		.gpio			= GPIO_PROX_SENSOR,
		.active_low		= 0,
		.can_disable		= 1,
	}
};

static struct regulator *prox_regulator;
static int mop500_prox_activate(struct device *dev);
static void mop500_prox_deactivate(struct device *dev);

static struct gpio_keys_platform_data mop500_gpio_keys_data = {
	.buttons	= mop500_gpio_keys,
	.nbuttons	= ARRAY_SIZE(mop500_gpio_keys),
	.enable		= mop500_prox_activate,
	.disable	= mop500_prox_deactivate,
};

static struct platform_device mop500_gpio_keys_device = {
	.name	= "gpio-keys",
	.id	= 0,
	.dev	= {
		.platform_data	= &mop500_gpio_keys_data,
	},
};

static int mop500_prox_activate(struct device *dev)
{
	prox_regulator = regulator_get(&mop500_gpio_keys_device.dev,
						"vcc");
	if (IS_ERR(prox_regulator)) {
		dev_err(&mop500_gpio_keys_device.dev,
			"no regulator\n");
		return PTR_ERR(prox_regulator);
	}
	regulator_enable(prox_regulator);
	return 0;
}

static void mop500_prox_deactivate(struct device *dev)
{
	regulator_disable(prox_regulator);
	regulator_put(prox_regulator);
}

/* add any platform devices here - TODO */
static struct platform_device *platform_devs[] __initdata = {
	&mop500_gpio_keys_device,
};

static void __init mop500_spi_init(void)
{
	db8500_add_ssp0(&ssp0_platform_data);
}

static void __init mop500_uart_init(void)
{
	db8500_add_uart0();
	db8500_add_uart1();
	db8500_add_uart2();
}

static void __init u8500_init_machine(void)
{
	u8500_init_devices();

	nmk_config_pins(mop500_pins, ARRAY_SIZE(mop500_pins));

	platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));

	mop500_i2c_init();
	mop500_sdi_init();
	mop500_spi_init();
	mop500_uart_init();

	platform_device_register(&ab8500_device);

	i2c_register_board_info(0, mop500_i2c0_devices,
				ARRAY_SIZE(mop500_i2c0_devices));
}

MACHINE_START(U8500, "ST-Ericsson MOP500 platform")
	/* Maintainer: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> */
	.boot_params	= 0x100,
	.map_io		= u8500_map_io,
	.init_irq	= ux500_init_irq,
	/* we re-use nomadik timer here */
	.timer		= &ux500_timer,
	.init_machine	= u8500_init_machine,
MACHINE_END