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/* arch/arm/mach-msm/board-sapphire-keypad.c
* Copyright (C) 2007-2009 HTC Corporation.
* Author: Thomas Tsai <thomas_tsai@htc.com>
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/platform_device.h>
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/gpio_event.h>
#include <asm/mach-types.h>
#include "gpio_chip.h"
#include "board-sapphire.h"
static char *keycaps = "--qwerty";
#undef MODULE_PARAM_PREFIX
#define MODULE_PARAM_PREFIX "board_sapphire."
module_param_named(keycaps, keycaps, charp, 0);
static unsigned int sapphire_col_gpios[] = { 35, 34 };
/* KP_MKIN2 (GPIO40) is not used? */
static unsigned int sapphire_row_gpios[] = { 42, 41 };
#define KEYMAP_INDEX(col, row) ((col)*ARRAY_SIZE(sapphire_row_gpios) + (row))
/*scan matrix key*/
/* HOME(up) + MENU (down)*/
static const unsigned short sapphire_keymap1[ARRAY_SIZE(sapphire_col_gpios) *
ARRAY_SIZE(sapphire_row_gpios)] = {
[KEYMAP_INDEX(0, 0)] = KEY_BACK,
[KEYMAP_INDEX(0, 1)] = KEY_MENU,
[KEYMAP_INDEX(1, 0)] = KEY_HOME,
[KEYMAP_INDEX(1, 1)] = KEY_SEND,
};
/* MENU(up) + HOME (down)*/
static const unsigned short sapphire_keymap0[ARRAY_SIZE(sapphire_col_gpios) *
ARRAY_SIZE(sapphire_row_gpios)] = {
[KEYMAP_INDEX(0, 0)] = KEY_BACK,
[KEYMAP_INDEX(0, 1)] = KEY_HOME,
[KEYMAP_INDEX(1, 0)] = KEY_MENU,
[KEYMAP_INDEX(1, 1)] = KEY_SEND,
};
static struct gpio_event_matrix_info sapphire_keypad_matrix_info = {
.info.func = gpio_event_matrix_func,
.keymap = sapphire_keymap1,
.output_gpios = sapphire_col_gpios,
.input_gpios = sapphire_row_gpios,
.noutputs = ARRAY_SIZE(sapphire_col_gpios),
.ninputs = ARRAY_SIZE(sapphire_row_gpios),
.settle_time.tv.nsec = 40 * NSEC_PER_USEC,
.poll_time.tv.nsec = 20 * NSEC_PER_MSEC,
.debounce_delay.tv.nsec = 50 * NSEC_PER_MSEC,
.flags = GPIOKPF_LEVEL_TRIGGERED_IRQ |
GPIOKPF_REMOVE_PHANTOM_KEYS |
GPIOKPF_PRINT_UNMAPPED_KEYS /*| GPIOKPF_PRINT_MAPPED_KEYS*/
};
static struct gpio_event_direct_entry sapphire_keypad_nav_map[] = {
{ SAPPHIRE_POWER_KEY, KEY_END },
{ SAPPHIRE_VOLUME_UP, KEY_VOLUMEUP },
{ SAPPHIRE_VOLUME_DOWN, KEY_VOLUMEDOWN },
};
static struct gpio_event_input_info sapphire_keypad_nav_info = {
.info.func = gpio_event_input_func,
.flags = 0,
.type = EV_KEY,
.keymap = sapphire_keypad_nav_map,
.debounce_time.tv.nsec = 20 * NSEC_PER_MSEC,
.keymap_size = ARRAY_SIZE(sapphire_keypad_nav_map)
};
static struct gpio_event_info *sapphire_keypad_info[] = {
&sapphire_keypad_matrix_info.info,
&sapphire_keypad_nav_info.info,
};
static struct gpio_event_platform_data sapphire_keypad_data = {
.name = "sapphire-keypad",
.info = sapphire_keypad_info,
.info_count = ARRAY_SIZE(sapphire_keypad_info)
};
static struct platform_device sapphire_keypad_device = {
.name = GPIO_EVENT_DEV_NAME,
.id = 0,
.dev = {
.platform_data = &sapphire_keypad_data,
},
};
static int __init sapphire_init_keypad(void)
{
if (!machine_is_sapphire())
return 0;
switch (sapphire_get_hwid()) {
case 0:
sapphire_keypad_matrix_info.keymap = sapphire_keymap0;
break;
default:
sapphire_keypad_matrix_info.keymap = sapphire_keymap1;
break;
}
return platform_device_register(&sapphire_keypad_device);
}
device_initcall(sapphire_init_keypad);
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