1#ifndef _MATRIX_KEYPAD_H
2#define _MATRIX_KEYPAD_H
3
4#include <linux/types.h>
5#include <linux/input.h>
6#include <linux/of.h>
7
8#define MATRIX_MAX_ROWS 32
9#define MATRIX_MAX_COLS 32
10
11#define KEY(row, col, val) ((((row) & (MATRIX_MAX_ROWS - 1)) << 24) |\
12 (((col) & (MATRIX_MAX_COLS - 1)) << 16) |\
13 ((val) & 0xffff))
14
15#define KEY_ROW(k) (((k) >> 24) & 0xff)
16#define KEY_COL(k) (((k) >> 16) & 0xff)
17#define KEY_VAL(k) ((k) & 0xffff)
18
19#define MATRIX_SCAN_CODE(row, col, row_shift) (((row) << (row_shift)) + (col))
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30struct matrix_keymap_data {
31 const uint32_t *keymap;
32 unsigned int keymap_size;
33};
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58struct matrix_keypad_platform_data {
59 const struct matrix_keymap_data *keymap_data;
60
61 const unsigned int *row_gpios;
62 const unsigned int *col_gpios;
63
64 unsigned int num_row_gpios;
65 unsigned int num_col_gpios;
66
67 unsigned int col_scan_delay_us;
68
69
70 unsigned int debounce_ms;
71
72 unsigned int clustered_irq;
73 unsigned int clustered_irq_flags;
74
75 bool active_low;
76 bool wakeup;
77 bool no_autorepeat;
78 bool drive_inactive_cols;
79};
80
81int matrix_keypad_build_keymap(const struct matrix_keymap_data *keymap_data,
82 const char *keymap_name,
83 unsigned int rows, unsigned int cols,
84 unsigned short *keymap,
85 struct input_dev *input_dev);
86int matrix_keypad_parse_properties(struct device *dev,
87 unsigned int *rows, unsigned int *cols);
88
89#define matrix_keypad_parse_of_params matrix_keypad_parse_properties
90
91#endif
92