board-mop500-stuib.c

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/*
 * Copyright (C) ST-Ericsson SA 2010
 *
 * License terms: GNU General Public License (GPL), version 2
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/mfd/stmpe.h>
#include <linux/input/bu21013.h>
#include <linux/gpio.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/input/matrix_keypad.h>
#include <asm/mach-types.h>

#include "board-mop500.h"

/* STMPE/SKE keypad use this key layout */
static const unsigned int mop500_keymap[] = {
    KEY(2, 5, KEY_END),
    KEY(4, 1, KEY_POWER),
    KEY(3, 5, KEY_VOLUMEDOWN),
    KEY(1, 3, KEY_3),
    KEY(5, 2, KEY_RIGHT),
    KEY(5, 0, KEY_9),

    KEY(0, 5, KEY_MENU),
    KEY(7, 6, KEY_ENTER),
    KEY(4, 5, KEY_0),
    KEY(6, 7, KEY_2),
    KEY(3, 4, KEY_UP),
    KEY(3, 3, KEY_DOWN),

    KEY(6, 4, KEY_SEND),
    KEY(6, 2, KEY_BACK),
    KEY(4, 2, KEY_VOLUMEUP),
    KEY(5, 5, KEY_1),
    KEY(4, 3, KEY_LEFT),
    KEY(3, 2, KEY_7),
};

static const struct matrix_keymap_data mop500_keymap_data = {
    .keymap     = mop500_keymap,
    .keymap_size    = ARRAY_SIZE(mop500_keymap),
};
/*
 * STMPE1601
 */
static struct stmpe_keypad_platform_data stmpe1601_keypad_data = {
    .debounce_ms    = 64,
    .scan_count     = 8,
    .no_autorepeat  = true,
    .keymap_data    = &mop500_keymap_data,
};

static struct stmpe_platform_data stmpe1601_data = {
    .id     = 1,
    .blocks     = STMPE_BLOCK_KEYPAD,
    .irq_trigger    = IRQF_TRIGGER_FALLING,
    .irq_base       = MOP500_STMPE1601_IRQ(0),
    .keypad     = &stmpe1601_keypad_data,
    .autosleep      = true,
    .autosleep_timeout = 1024,
};

static struct i2c_board_info __initdata mop500_i2c0_devices_stuib[] = {
    {
        I2C_BOARD_INFO("stmpe1601", 0x40),
        .irq = NOMADIK_GPIO_TO_IRQ(218),
        .platform_data = &stmpe1601_data,
        .flags = I2C_CLIENT_WAKE,
    },
};

/*
 * BU21013 ROHM touchscreen interface on the STUIBs
 */

/* tracks number of bu21013 devices being enabled */
static int bu21013_devices;

#define TOUCH_GPIO_PIN  84

#define TOUCH_XMAX  384
#define TOUCH_YMAX  704

#define PRCMU_CLOCK_OCR     0x1CC
#define TSC_EXT_CLOCK_9_6MHZ    0x840000

static int bu21013_gpio_board_init(int reset_pin)
{
    int retval = 0;

    bu21013_devices++;
    if (bu21013_devices == 1) {
        retval = gpio_request(reset_pin, "touchp_reset");
        if (retval) {
            printk(KERN_ERR "Unable to request gpio reset_pin");
            return retval;
        }
        retval = gpio_direction_output(reset_pin, 1);
        if (retval < 0) {
            printk(KERN_ERR "%s: gpio direction failed\n",
                    __func__);
            return retval;
        }
    }

    return retval;
}

static int bu21013_gpio_board_exit(int reset_pin)
{
    int retval = 0;

    if (bu21013_devices == 1) {
        retval = gpio_direction_output(reset_pin, 0);
        if (retval < 0) {
            printk(KERN_ERR "%s: gpio direction failed\n",
                    __func__);
            return retval;
        }
        gpio_set_value(reset_pin, 0);
    }
    bu21013_devices--;

    return retval;
}

static int bu21013_read_pin_val(void)
{
    return gpio_get_value(TOUCH_GPIO_PIN);
}

static struct bu21013_platform_device tsc_plat_device = {
    .cs_en = bu21013_gpio_board_init,
    .cs_dis = bu21013_gpio_board_exit,
    .irq_read_val = bu21013_read_pin_val,
    .irq = NOMADIK_GPIO_TO_IRQ(TOUCH_GPIO_PIN),
    .touch_x_max = TOUCH_XMAX,
    .touch_y_max = TOUCH_YMAX,
    .ext_clk = false,
    .x_flip = false,
    .y_flip = true,
};

static struct bu21013_platform_device tsc_plat2_device = {
    .cs_en = bu21013_gpio_board_init,
    .cs_dis = bu21013_gpio_board_exit,
    .irq_read_val = bu21013_read_pin_val,
    .irq = NOMADIK_GPIO_TO_IRQ(TOUCH_GPIO_PIN),
    .touch_x_max = TOUCH_XMAX,
    .touch_y_max = TOUCH_YMAX,
    .ext_clk = false,
    .x_flip = false,
    .y_flip = true,
};

static struct i2c_board_info __initdata u8500_i2c3_devices_stuib[] = {
    {
        I2C_BOARD_INFO("bu21013_tp", 0x5C),
        .platform_data = &tsc_plat_device,
    },
    {
        I2C_BOARD_INFO("bu21013_tp", 0x5D),
        .platform_data = &tsc_plat2_device,
    },

};

void __init mop500_stuib_init(void)
{
    if (machine_is_hrefv60()) {
        tsc_plat_device.cs_pin = HREFV60_TOUCH_RST_GPIO;
        tsc_plat2_device.cs_pin = HREFV60_TOUCH_RST_GPIO;
    } else {
        tsc_plat_device.cs_pin = GPIO_BU21013_CS;
        tsc_plat2_device.cs_pin = GPIO_BU21013_CS;

    }

    mop500_uib_i2c_add(0, mop500_i2c0_devices_stuib,
            ARRAY_SIZE(mop500_i2c0_devices_stuib));

    mop500_uib_i2c_add(3, u8500_i2c3_devices_stuib,
            ARRAY_SIZE(u8500_i2c3_devices_stuib));
}