| 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
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| 2 | /* |
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| 3 | * Copyright (C) 2006 Komal Shah <komal_shah802003@yahoo.com> |
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| 4 | */ |
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| 5 | #ifndef __KEYPAD_OMAP_H |
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| 6 | #define __KEYPAD_OMAP_H |
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| 7 | |
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| 8 | #ifndef CONFIG_ARCH_OMAP1 |
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| 9 | #warning Please update the board to use matrix-keypad driver |
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| 10 | #define omap_readw(reg) 0 |
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| 11 | #define omap_writew(val, reg) do {} while (0) |
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| 12 | #endif |
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| 13 | #include <linux/input/matrix_keypad.h> |
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| 14 | |
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| 15 | struct omap_kp_platform_data { |
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| 16 | int rows; |
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| 17 | int cols; |
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| 18 | const struct matrix_keymap_data *keymap_data; |
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| 19 | bool rep; |
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| 20 | unsigned long delay; |
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| 21 | bool dbounce; |
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| 22 | /* specific to OMAP242x*/ |
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| 23 | unsigned int *row_gpios; |
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| 24 | unsigned int *col_gpios; |
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| 25 | }; |
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| 26 | |
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| 27 | /* Group (0..3) -- when multiple keys are pressed, only the |
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| 28 | * keys pressed in the same group are considered as pressed. This is |
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| 29 | * in order to workaround certain crappy HW designs that produce ghost |
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| 30 | * keypresses. Two free bits, not used by neither row/col nor keynum, |
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| 31 | * must be available for use as group bits. The below GROUP_SHIFT |
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| 32 | * macro definition is based on some prior knowledge of the |
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| 33 | * matrix_keypad defined KEY() macro internals. |
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| 34 | */ |
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| 35 | #define GROUP_SHIFT 14 |
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| 36 | #define GROUP_0 (0 << GROUP_SHIFT) |
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| 37 | #define GROUP_1 (1 << GROUP_SHIFT) |
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| 38 | #define GROUP_2 (2 << GROUP_SHIFT) |
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| 39 | #define GROUP_3 (3 << GROUP_SHIFT) |
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| 40 | #define GROUP_MASK GROUP_3 |
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| 41 | #if KEY_MAX & GROUP_MASK |
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| 42 | #error Group bits in conflict with keynum bits |
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| 43 | #endif |
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| 44 | |
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| 45 | |
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| 46 | #endif |
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| 47 | |
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| 48 | |
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