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