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