/*
 * Copyright (C) ST-Ericsson SA 2010
 *
 * License Terms: GNU General Public License v2
 *
 * Keypad layouts for various boards
 */

#include <linux/i2c.h>
#include <linux/gpio.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/mfd/stmpe.h>
#include <linux/mfd/tc3589x.h>
#include <linux/input/matrix_keypad.h>

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

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

#include "devices-db8500.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),
};

/*
 * Nomadik SKE keypad
 */
#define ROW_PIN_I0      164
#define ROW_PIN_I1      163
#define ROW_PIN_I2      162
#define ROW_PIN_I3      161
#define ROW_PIN_I4      156
#define ROW_PIN_I5      155
#define ROW_PIN_I6      154
#define ROW_PIN_I7      153
#define COL_PIN_O0      168
#define COL_PIN_O1      167
#define COL_PIN_O2      166
#define COL_PIN_O3      165
#define COL_PIN_O4      160
#define COL_PIN_O5      159
#define COL_PIN_O6      158
#define COL_PIN_O7      157

#define SKE_KPD_MAX_ROWS        8
#define SKE_KPD_MAX_COLS        8

static int ske_kp_rows[] = {
        ROW_PIN_I0, ROW_PIN_I1, ROW_PIN_I2, ROW_PIN_I3,
        ROW_PIN_I4, ROW_PIN_I5, ROW_PIN_I6, ROW_PIN_I7,
};

/*
 * ske_set_gpio_row: request and set gpio rows
 */
static int ske_set_gpio_row(int gpio)
{
        int ret;

        ret = gpio_request(gpio, "ske-kp");
        if (ret < 0) {
                pr_err("ske_set_gpio_row: gpio request failed\n");
                return ret;
        }

        ret = gpio_direction_output(gpio, 1);
        if (ret < 0) {
                pr_err("ske_set_gpio_row: gpio direction failed\n");
                gpio_free(gpio);
        }

        return ret;
}

/*
 * ske_kp_init - enable the gpio configuration
 */
static int ske_kp_init(void)
{
        int ret, i;

        for (i = 0; i < SKE_KPD_MAX_ROWS; i++) {
                ret = ske_set_gpio_row(ske_kp_rows[i]);
                if (ret < 0) {
                        pr_err("ske_kp_init: failed init\n");
                        return ret;
                }
        }

        return 0;
}

static struct ske_keypad_platform_data ske_keypad_board = {
        .init           = ske_kp_init,
        .keymap_data    = &mop500_keymap_data,
        .no_autorepeat  = true,
        .krow           = SKE_KPD_MAX_ROWS,     /* 8x8 matrix */
        .kcol           = SKE_KPD_MAX_COLS,
        .debounce_ms    = 40,                   /* in millisecs */
};

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

/*
 * TC35893
 */

static const unsigned int uib_keymap[] = {
        KEY(3, 1, KEY_END),
        KEY(4, 1, KEY_POWER),
        KEY(6, 4, KEY_VOLUMEDOWN),
        KEY(4, 2, KEY_EMAIL),
        KEY(3, 3, KEY_RIGHT),
        KEY(2, 5, KEY_BACKSPACE),

        KEY(6, 7, KEY_MENU),
        KEY(5, 0, KEY_ENTER),
        KEY(4, 3, KEY_0),
        KEY(3, 4, KEY_DOT),
        KEY(5, 2, KEY_UP),
        KEY(3, 5, KEY_DOWN),

        KEY(4, 5, KEY_SEND),
        KEY(0, 5, KEY_BACK),
        KEY(6, 2, KEY_VOLUMEUP),
        KEY(1, 3, KEY_SPACE),
        KEY(7, 6, KEY_LEFT),
        KEY(5, 5, KEY_SEARCH),
};

static struct matrix_keymap_data uib_keymap_data = {
        .keymap         = uib_keymap,
        .keymap_size    = ARRAY_SIZE(uib_keymap),
};

static struct tc3589x_keypad_platform_data tc35893_data = {
        .krow = TC_KPD_ROWS,
        .kcol = TC_KPD_COLUMNS,
        .debounce_period = TC_KPD_DEBOUNCE_PERIOD,
        .settle_time = TC_KPD_SETTLE_TIME,
        .irqtype = IRQF_TRIGGER_FALLING,
        .enable_wakeup = true,
        .keymap_data    = &uib_keymap_data,
        .no_autorepeat  = true,
};

static struct tc3589x_platform_data tc3589x_keypad_data = {
        .block = TC3589x_BLOCK_KEYPAD,
        .keypad = &tc35893_data,
        .irq_base = MOP500_EGPIO_IRQ_BASE,
};

static struct i2c_board_info mop500_i2c0_devices_uib[] = {
        {
                I2C_BOARD_INFO("tc3589x", 0x44),
                .platform_data = &tc3589x_keypad_data,
                .irq = NOMADIK_GPIO_TO_IRQ(218),
                .flags = I2C_CLIENT_WAKE,
        },
};

void mop500_keypad_init(void)
{
        db8500_add_ske_keypad(&ske_keypad_board);

        i2c_register_board_info(0, mop500_i2c0_devices_stuib,
                        ARRAY_SIZE(mop500_i2c0_devices_stuib));

        i2c_register_board_info(0, mop500_i2c0_devices_uib,
                        ARRAY_SIZE(mop500_i2c0_devices_uib));

}