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/*
* arch/arm/mach-tegra/include/mach/kbc.h
*
* Platform definitions for tegra-kbc keyboard input driver
*
* Copyright (c) 2010, NVIDIA Corporation.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef ASMARM_ARCH_TEGRA_KBC_H
#define ASMARM_ARCH_TEGRA_KBC_H
#include <linux/types.h>
#define KBC_MAX_ROW 16
#define KBC_MAX_COL 8
#define KBC_MAX_KPRESS_EVENT 8
#define KBC_PIN_GPIO_0 0
#define KBC_PIN_GPIO_1 1
#define KBC_PIN_GPIO_2 2
#define KBC_PIN_GPIO_3 3
#define KBC_PIN_GPIO_4 4
#define KBC_PIN_GPIO_5 5
#define KBC_PIN_GPIO_6 6
#define KBC_PIN_GPIO_7 7
#define KBC_PIN_GPIO_8 8
#define KBC_PIN_GPIO_9 9
#define KBC_PIN_GPIO_10 10
#define KBC_PIN_GPIO_11 11
#define KBC_PIN_GPIO_12 12
#define KBC_PIN_GPIO_13 13
#define KBC_PIN_GPIO_14 14
#define KBC_PIN_GPIO_15 15
#define KBC_PIN_GPIO_16 16
#define KBC_PIN_GPIO_17 17
#define KBC_PIN_GPIO_18 18
#define KBC_PIN_GPIO_19 19
#define KBC_PIN_GPIO_20 20
#define KBC_PIN_GPIO_21 21
#define KBC_PIN_GPIO_22 22
#define KBC_PIN_GPIO_23 23
#define KBC_MAX_GPIO (KBC_MAX_ROW + KBC_MAX_COL)
#define KBC_MAX_KEY (KBC_MAX_ROW * KBC_MAX_COL)
enum {
kbc_pin_unused = 0,
kbc_pin_row,
kbc_pin_col,
};
struct tegra_kbc_wake_key {
u8 row:4;
u8 col:4;
};
struct tegra_kbc_pin_cfg {
int pin_type;
unsigned char num;
};
/**
* struct tegra_kbc_platform_data - Tegra kbc specific platform data for kbc
* driver.
* @debounce_cnt: Debaunce count in terms of clock ticks of 32KHz
* @repeat_cnt: The time to start next scan after completing the current scan
* in terms of clock ticks of 32KHz clock
* @scan_timeout_cnt: Number of clock count (32KHz) to keep scanning of keys
* after last pressed key is released.
* @scan_count: Number of scanning done by kbc after last key released. Based
* parameter, the scan timeout can be calculated. User can
* provide the value either for scan_count or scan_timeout_cnt.
* Both parameters are not require to be set.
* @plain_keycode: The key code array for keys in normal mode.
* @fn_keycode: The key code array for keys with function key pressed.
* @is_filter_keys: Tells whether filter algorithms applied or not.
* @kbc_pin_type: The type of kbc pin whether unused or column or row.
* @is_wake_on_any_key: System whouls wakeup on any key or the key list from
* wake_cfg.
* @wake_key_cnt: Number of key count in wakeup list.
*/
struct tegra_kbc_platform_data {
unsigned int debounce_cnt;
unsigned int repeat_cnt;
unsigned int scan_timeout_cnt;
unsigned int scan_count;
int *plain_keycode;
int *fn_keycode;
bool is_filter_keys;
struct tegra_kbc_pin_cfg pin_cfg[KBC_MAX_GPIO];
bool is_wake_on_any_key;
struct tegra_kbc_wake_key *wake_cfg;
int wake_key_cnt;
};
#endif
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