| /* SPDX-License-Identifier: GPL-2.0-only */ | |
| /* | |
| * Copyright (C) 2006 Komal Shah <komal_shah802003@yahoo.com> | |
| */ | |
| #ifndef __KEYPAD_OMAP_H | |
| #define __KEYPAD_OMAP_H | |
| #ifndef CONFIG_ARCH_OMAP1 | |
| #warning Please update the board to use matrix-keypad driver | |
| #define omap_readw(reg) 0 | |
| #define omap_writew(val, reg) do {} while (0) | |
| #endif | |
| #include <linux/input/matrix_keypad.h> | |
| struct omap_kp_platform_data { | |
| int rows; | |
| int cols; | |
| const struct matrix_keymap_data *keymap_data; | |
| bool rep; | |
| unsigned long delay; | |
| bool dbounce; | |
| /* specific to OMAP242x*/ | |
| unsigned int *row_gpios; | |
| unsigned int *col_gpios; | |
| }; | |
| /* Group (0..3) -- when multiple keys are pressed, only the | |
| * keys pressed in the same group are considered as pressed. This is | |
| * in order to workaround certain crappy HW designs that produce ghost | |
| * keypresses. Two free bits, not used by neither row/col nor keynum, | |
| * must be available for use as group bits. The below GROUP_SHIFT | |
| * macro definition is based on some prior knowledge of the | |
| * matrix_keypad defined KEY() macro internals. | |
| */ | |
| #define GROUP_SHIFT 14 | |
| #define GROUP_0 (0 << GROUP_SHIFT) | |
| #define GROUP_1 (1 << GROUP_SHIFT) | |
| #define GROUP_2 (2 << GROUP_SHIFT) | |
| #define GROUP_3 (3 << GROUP_SHIFT) | |
| #define GROUP_MASK GROUP_3 | |
| #if KEY_MAX & GROUP_MASK | |
| #error Group bits in conflict with keynum bits | |
| #endif | |
| #endif | |