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 };
23
24 /* Group (0..3) -- when multiple keys are pressed, only the
25 * keys pressed in the same group are considered as pressed. This is
26 * in order to workaround certain crappy HW designs that produce ghost
27 * keypresses. Two free bits, not used by neither row/col nor keynum,
28 * must be available for use as group bits. The below GROUP_SHIFT
29 * macro definition is based on some prior knowledge of the
30 * matrix_keypad defined KEY() macro internals.
31 */
32 #define GROUP_SHIFT 14
33 #define GROUP_0 (0 << GROUP_SHIFT)
34 #define GROUP_1 (1 << GROUP_SHIFT)
35 #define GROUP_2 (2 << GROUP_SHIFT)
36 #define GROUP_3 (3 << GROUP_SHIFT)
37 #define GROUP_MASK GROUP_3
38 #if KEY_MAX & GROUP_MASK
39 #error Group bits in conflict with keynum bits
40 #endif
41
42
43 #endif
44
45
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