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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2006 Komal Shah <[email protected]>
*/
#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