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