1 /* SPDX-License-Identifier: GPL-2.0 */ <<
2 #ifndef __ASM_ARCH_PXA27x_KEYPAD_H 1 #ifndef __ASM_ARCH_PXA27x_KEYPAD_H
3 #define __ASM_ARCH_PXA27x_KEYPAD_H 2 #define __ASM_ARCH_PXA27x_KEYPAD_H
4 3
5 #include <linux/input.h> 4 #include <linux/input.h>
6 #include <linux/input/matrix_keypad.h> 5 #include <linux/input/matrix_keypad.h>
7 6
8 #define MAX_MATRIX_KEY_ROWS (8) 7 #define MAX_MATRIX_KEY_ROWS (8)
9 #define MAX_MATRIX_KEY_COLS (8) 8 #define MAX_MATRIX_KEY_COLS (8)
10 #define MATRIX_ROW_SHIFT (3) 9 #define MATRIX_ROW_SHIFT (3)
11 #define MAX_DIRECT_KEY_NUM (8) 10 #define MAX_DIRECT_KEY_NUM (8)
12 11
13 /* pxa3xx keypad platform specific parameters 12 /* pxa3xx keypad platform specific parameters
14 * 13 *
15 * NOTE: 14 * NOTE:
16 * 1. direct_key_num indicates the number of k 15 * 1. direct_key_num indicates the number of keys in the direct keypad
17 * _plus_ the number of rotary-encoder sens 16 * _plus_ the number of rotary-encoder sensor inputs, this can be
18 * left as 0 if only rotary encoders are en 17 * left as 0 if only rotary encoders are enabled, the driver will
19 * automatically calculate this 18 * automatically calculate this
20 * 19 *
21 * 2. direct_key_map is the key code map for t 20 * 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 21 * encoder(s) are enabled, direct key 0/1(2/3) will be ignored
23 * 22 *
24 * 3. rotary can be either interpreted as a re 23 * 3. rotary can be either interpreted as a relative input event (e.g.
25 * REL_WHEEL/REL_HWHEEL) or specific keys ( 24 * REL_WHEEL/REL_HWHEEL) or specific keys (e.g. UP/DOWN/LEFT/RIGHT)
26 * 25 *
27 * 4. matrix key and direct key will use the s 26 * 4. matrix key and direct key will use the same debounce_interval by
28 * default, which should be sufficient in m 27 * default, which should be sufficient in most cases
29 * 28 *
30 * pxa168 keypad platform specific parameter 29 * pxa168 keypad platform specific parameter
31 * 30 *
32 * NOTE: 31 * NOTE:
33 * clear_wakeup_event callback is a workaround 32 * clear_wakeup_event callback is a workaround required to clear the
34 * keypad interrupt. The keypad wake must be c 33 * keypad interrupt. The keypad wake must be cleared in addition to
35 * reading the MI/DI bits in the KPC register. 34 * reading the MI/DI bits in the KPC register.
36 */ 35 */
37 struct pxa27x_keypad_platform_data { 36 struct pxa27x_keypad_platform_data {
38 37
39 /* code map for the matrix keys */ 38 /* code map for the matrix keys */
40 const struct matrix_keymap_data *matri 39 const struct matrix_keymap_data *matrix_keymap_data;
41 unsigned int matrix_key_rows; 40 unsigned int matrix_key_rows;
42 unsigned int matrix_key_cols; 41 unsigned int matrix_key_cols;
43 42
44 /* direct keys */ 43 /* direct keys */
45 int direct_key_num; 44 int direct_key_num;
46 unsigned int direct_key_map[MAX_DIR 45 unsigned int direct_key_map[MAX_DIRECT_KEY_NUM];
47 /* the key output may be low active */ 46 /* the key output may be low active */
48 int direct_key_low_active; 47 int direct_key_low_active;
49 /* give board a chance to choose the s 48 /* give board a chance to choose the start direct key */
50 unsigned int direct_key_mask; 49 unsigned int direct_key_mask;
51 50
52 /* rotary encoders 0 */ 51 /* rotary encoders 0 */
53 int enable_rotary0; 52 int enable_rotary0;
54 int rotary0_rel_code; 53 int rotary0_rel_code;
55 int rotary0_up_key; 54 int rotary0_up_key;
56 int rotary0_down_key; 55 int rotary0_down_key;
57 56
58 /* rotary encoders 1 */ 57 /* rotary encoders 1 */
59 int enable_rotary1; 58 int enable_rotary1;
60 int rotary1_rel_code; 59 int rotary1_rel_code;
61 int rotary1_up_key; 60 int rotary1_up_key;
62 int rotary1_down_key; 61 int rotary1_down_key;
63 62
64 /* key debounce interval */ 63 /* key debounce interval */
65 unsigned int debounce_interval; 64 unsigned int debounce_interval;
66 65
67 /* clear wakeup event requirement for 66 /* clear wakeup event requirement for pxa168 */
68 void (*clear_wakeup_event)( 67 void (*clear_wakeup_event)(void);
69 }; 68 };
70 69
71 extern void pxa_set_keypad_info(struct pxa27x_ 70 extern void pxa_set_keypad_info(struct pxa27x_keypad_platform_data *info);
72 71
73 #endif /* __ASM_ARCH_PXA27x_KEYPAD_H */ 72 #endif /* __ASM_ARCH_PXA27x_KEYPAD_H */
74 73
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