1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef __ASM_ARCH_PXA27x_KEYPAD_H |
3 | #define __ASM_ARCH_PXA27x_KEYPAD_H |
4 | |
5 | #include <linux/input.h> |
6 | #include <linux/input/matrix_keypad.h> |
7 | |
8 | #define MAX_MATRIX_KEY_ROWS (8) |
9 | #define MAX_MATRIX_KEY_COLS (8) |
10 | #define MATRIX_ROW_SHIFT (3) |
11 | #define MAX_DIRECT_KEY_NUM (8) |
12 | |
13 | /* pxa3xx keypad platform specific parameters |
14 | * |
15 | * NOTE: |
16 | * 1. direct_key_num indicates the number of keys in the direct keypad |
17 | * _plus_ the number of rotary-encoder sensor inputs, this can be |
18 | * left as 0 if only rotary encoders are enabled, the driver will |
19 | * automatically calculate this |
20 | * |
21 | * 2. direct_key_map is the key code map for the direct keys, if rotary |
22 | * encoder(s) are enabled, direct key 0/1(2/3) will be ignored |
23 | * |
24 | * 3. rotary can be either interpreted as a relative input event (e.g. |
25 | * REL_WHEEL/REL_HWHEEL) or specific keys (e.g. UP/DOWN/LEFT/RIGHT) |
26 | * |
27 | * 4. matrix key and direct key will use the same debounce_interval by |
28 | * default, which should be sufficient in most cases |
29 | * |
30 | * pxa168 keypad platform specific parameter |
31 | * |
32 | * NOTE: |
33 | * clear_wakeup_event callback is a workaround required to clear the |
34 | * keypad interrupt. The keypad wake must be cleared in addition to |
35 | * reading the MI/DI bits in the KPC register. |
36 | */ |
37 | struct pxa27x_keypad_platform_data { |
38 | |
39 | /* code map for the matrix keys */ |
40 | const struct matrix_keymap_data *matrix_keymap_data; |
41 | unsigned int matrix_key_rows; |
42 | unsigned int matrix_key_cols; |
43 | |
44 | /* direct keys */ |
45 | int direct_key_num; |
46 | unsigned int direct_key_map[MAX_DIRECT_KEY_NUM]; |
47 | /* the key output may be low active */ |
48 | int direct_key_low_active; |
49 | /* give board a chance to choose the start direct key */ |
50 | unsigned int direct_key_mask; |
51 | |
52 | /* rotary encoders 0 */ |
53 | int enable_rotary0; |
54 | int rotary0_rel_code; |
55 | int rotary0_up_key; |
56 | int rotary0_down_key; |
57 | |
58 | /* rotary encoders 1 */ |
59 | int enable_rotary1; |
60 | int rotary1_rel_code; |
61 | int rotary1_up_key; |
62 | int rotary1_down_key; |
63 | |
64 | /* key debounce interval */ |
65 | unsigned int debounce_interval; |
66 | |
67 | /* clear wakeup event requirement for pxa168 */ |
68 | void (*clear_wakeup_event)(void); |
69 | }; |
70 | |
71 | extern void pxa_set_keypad_info(struct pxa27x_keypad_platform_data *info); |
72 | |
73 | #endif /* __ASM_ARCH_PXA27x_KEYPAD_H */ |
74 | |