1/*
2 *  arch/arm/plat-omap/include/mach/keypad.h
3 *
4 *  Copyright (C) 2006 Komal Shah <komal_shah802003@yahoo.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10#ifndef ASMARM_ARCH_KEYPAD_H
11#define ASMARM_ARCH_KEYPAD_H
12
13#ifndef CONFIG_ARCH_OMAP1
14#warning Please update the board to use matrix-keypad driver
15#define omap_readw(reg)		0
16#define omap_writew(val, reg)	do {} while (0)
17#endif
18#include <linux/input/matrix_keypad.h>
19
20struct omap_kp_platform_data {
21	int rows;
22	int cols;
23	const struct matrix_keymap_data *keymap_data;
24	bool rep;
25	unsigned long delay;
26	bool dbounce;
27	/* specific to OMAP242x*/
28	unsigned int *row_gpios;
29	unsigned int *col_gpios;
30};
31
32/* Group (0..3) -- when multiple keys are pressed, only the
33 * keys pressed in the same group are considered as pressed. This is
34 * in order to workaround certain crappy HW designs that produce ghost
35 * keypresses. Two free bits, not used by neither row/col nor keynum,
36 * must be available for use as group bits. The below GROUP_SHIFT
37 * macro definition is based on some prior knowledge of the
38 * matrix_keypad defined KEY() macro internals.
39 */
40#define GROUP_SHIFT	14
41#define GROUP_0		(0 << GROUP_SHIFT)
42#define GROUP_1		(1 << GROUP_SHIFT)
43#define GROUP_2		(2 << GROUP_SHIFT)
44#define GROUP_3		(3 << GROUP_SHIFT)
45#define GROUP_MASK	GROUP_3
46#if KEY_MAX & GROUP_MASK
47#error Group bits in conflict with keynum bits
48#endif
49
50
51#endif
52
53