74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_ARCH_PXA27x_KEYPAD_H
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#define __ASM_ARCH_PXA27x_KEYPAD_H
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#include <linux/input.h>
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#include <linux/input/matrix_keypad.h>
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#define MAX_MATRIX_KEY_ROWS (8)
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#define MAX_MATRIX_KEY_COLS (8)
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#define MATRIX_ROW_SHIFT (3)
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#define MAX_DIRECT_KEY_NUM (8)
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/* pxa3xx keypad platform specific parameters
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*
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* NOTE:
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* 1. direct_key_num indicates the number of keys in the direct keypad
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* _plus_ the number of rotary-encoder sensor inputs, this can be
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* left as 0 if only rotary encoders are enabled, the driver will
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* automatically calculate this
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*
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* 2. direct_key_map is the key code map for the direct keys, if rotary
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* encoder(s) are enabled, direct key 0/1(2/3) will be ignored
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*
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* 3. rotary can be either interpreted as a relative input event (e.g.
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* REL_WHEEL/REL_HWHEEL) or specific keys (e.g. UP/DOWN/LEFT/RIGHT)
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*
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* 4. matrix key and direct key will use the same debounce_interval by
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* default, which should be sufficient in most cases
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*
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* pxa168 keypad platform specific parameter
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*
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* NOTE:
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* clear_wakeup_event callback is a workaround required to clear the
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* keypad interrupt. The keypad wake must be cleared in addition to
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* reading the MI/DI bits in the KPC register.
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*/
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struct pxa27x_keypad_platform_data {
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/* code map for the matrix keys */
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const struct matrix_keymap_data *matrix_keymap_data;
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unsigned int matrix_key_rows;
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unsigned int matrix_key_cols;
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/* direct keys */
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int direct_key_num;
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unsigned int direct_key_map[MAX_DIRECT_KEY_NUM];
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/* the key output may be low active */
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int direct_key_low_active;
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/* give board a chance to choose the start direct key */
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unsigned int direct_key_mask;
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/* rotary encoders 0 */
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int enable_rotary0;
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int rotary0_rel_code;
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int rotary0_up_key;
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int rotary0_down_key;
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/* rotary encoders 1 */
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int enable_rotary1;
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int rotary1_rel_code;
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int rotary1_up_key;
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int rotary1_down_key;
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/* key debounce interval */
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unsigned int debounce_interval;
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/* clear wakeup event requirement for pxa168 */
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void (*clear_wakeup_event)(void);
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};
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extern void pxa_set_keypad_info(struct pxa27x_keypad_platform_data *info);
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#endif /* __ASM_ARCH_PXA27x_KEYPAD_H */
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