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/*
* Copyright (C) 2010 NVIDIA, Inc.
*
* 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.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307, USA
*/
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/input.h>
#include <linux/device.h>
#include <mach/clk.h>
#include <mach/iomap.h>
#include <mach/irqs.h>
#include <mach/pinmux.h>
#include <mach/iomap.h>
#include <mach/io.h>
#include <mach/kbc.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
/*
* Scrollwheel is connected to KBC pins but has it's own
* driver using those pins as gpio.
* In case of using scrollwheel Row3 and Col3/4/5
* should NOT be configured as KBC
*/
#ifdef CONFIG_INPUT_ALPS_GPIO_SCROLLWHEEL
#define WHISTLER_ROW_COUNT 3
#define WHISTLER_COL_COUNT 2
#else
#define WHISTLER_ROW_COUNT 4
#define WHISTLER_COL_COUNT 2
#endif
#ifdef CONFIG_INPUT_ALPS_GPIO_SCROLLWHEEL
static int plain_kbd_keycode[] = {
KEY_POWER, KEY_RESERVED,
KEY_HOME, KEY_BACK,
KEY_RESERVED, KEY_MENU,
};
#else
static int plain_kbd_keycode[] = {
KEY_POWER, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
KEY_HOME, KEY_BACK, KEY_RESERVED, KEY_RESERVED,
KEY_RESERVED, KEY_RESERVED, KEY_RESERVED, KEY_RESERVED,
KEY_VOLUMEDOWN, KEY_VOLUMEUP, KEY_RESERVED, KEY_RESERVED,
};
#endif
static struct tegra_kbc_wake_key whistler_wake_cfg[] = {
[0] = {
.row = 0,
.col = 0,
},
};
static struct tegra_kbc_platform_data whistler_kbc_platform_data = {
.debounce_cnt = 20,
.repeat_cnt = 50 * 32,
.scan_timeout_cnt = 3000 * 32,
.plain_keycode = plain_kbd_keycode,
.fn_keycode = NULL,
.is_filter_keys = false,
.is_wake_on_any_key = false,
.wake_key_cnt = 1,
.wake_cfg = &whistler_wake_cfg[0],
};
static struct resource whistler_kbc_resources[] = {
[0] = {
.start = TEGRA_KBC_BASE,
.end = TEGRA_KBC_BASE + TEGRA_KBC_SIZE - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = INT_KBC,
.end = INT_KBC,
.flags = IORESOURCE_IRQ,
},
};
struct platform_device whistler_kbc_device = {
.name = "tegra-kbc",
.id = -1,
.dev = {
.platform_data = &whistler_kbc_platform_data,
},
.resource = whistler_kbc_resources,
.num_resources = ARRAY_SIZE(whistler_kbc_resources),
};
int __init whistler_kbc_init(void)
{
struct tegra_kbc_platform_data *data = &whistler_kbc_platform_data;
int i;
pr_info("KBC: whistler_kbc_init\n");
/* Setup the pin configuration information. */
for (i = 0; i < KBC_MAX_GPIO; i++) {
data->pin_cfg[i].num = 0;
data->pin_cfg[i].pin_type = kbc_pin_unused;
}
for (i = 0; i < WHISTLER_ROW_COUNT; i++) {
data->pin_cfg[i].num = i;
data->pin_cfg[i].pin_type = kbc_pin_row;
}
for (i = 0; i < WHISTLER_COL_COUNT; i++) {
data->pin_cfg[i + WHISTLER_ROW_COUNT].num = i;
data->pin_cfg[i + WHISTLER_ROW_COUNT].pin_type = kbc_pin_col;
}
platform_device_register(&whistler_kbc_device);
return 0;
}
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