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