1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  *  Copyright (C) 2006 Komal Shah <komal_shah802003@yahoo.com>
4  */
5 #ifndef __KEYPAD_OMAP_H
6 #define __KEYPAD_OMAP_H
7 
8 #ifndef CONFIG_ARCH_OMAP1
9 #warning Please update the board to use matrix-keypad driver
10 #define omap_readw(reg)		0
11 #define omap_writew(val, reg)	do {} while (0)
12 #endif
13 #include <linux/input/matrix_keypad.h>
14 
15 struct omap_kp_platform_data {
16 	int rows;
17 	int cols;
18 	const struct matrix_keymap_data *keymap_data;
19 	bool rep;
20 	unsigned long delay;
21 	bool dbounce;
22 	/* specific to OMAP242x*/
23 	unsigned int *row_gpios;
24 	unsigned int *col_gpios;
25 };
26 
27 /* Group (0..3) -- when multiple keys are pressed, only the
28  * keys pressed in the same group are considered as pressed. This is
29  * in order to workaround certain crappy HW designs that produce ghost
30  * keypresses. Two free bits, not used by neither row/col nor keynum,
31  * must be available for use as group bits. The below GROUP_SHIFT
32  * macro definition is based on some prior knowledge of the
33  * matrix_keypad defined KEY() macro internals.
34  */
35 #define GROUP_SHIFT	14
36 #define GROUP_0		(0 << GROUP_SHIFT)
37 #define GROUP_1		(1 << GROUP_SHIFT)
38 #define GROUP_2		(2 << GROUP_SHIFT)
39 #define GROUP_3		(3 << GROUP_SHIFT)
40 #define GROUP_MASK	GROUP_3
41 #if KEY_MAX & GROUP_MASK
42 #error Group bits in conflict with keynum bits
43 #endif
44 
45 
46 #endif
47 
48