keypad-omap.h

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/*
 *  arch/arm/plat-omap/include/mach/keypad.h
 *
 *  Copyright (C) 2006 Komal Shah <[email protected]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#ifndef ASMARM_ARCH_KEYPAD_H
#define ASMARM_ARCH_KEYPAD_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