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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _MATRIX_KEYPAD_H
#define _MATRIX_KEYPAD_H
#include <linux/types.h>
struct device;
struct input_dev;
#define MATRIX_MAX_ROWS 32
#define MATRIX_MAX_COLS 32
#define KEY(row, col, val) ((((row) & (MATRIX_MAX_ROWS - 1)) << 24) |\
(((col) & (MATRIX_MAX_COLS - 1)) << 16) |\
((val) & 0xffff))
#define KEY_ROW(k) (((k) >> 24) & 0xff)
#define KEY_COL(k) (((k) >> 16) & 0xff)
#define KEY_VAL(k) ((k) & 0xffff)
#define MATRIX_SCAN_CODE(row, col, row_shift) (((row) << (row_shift)) + (col))
/**
* struct matrix_keymap_data - keymap for matrix keyboards
* @keymap: pointer to array of uint32 values encoded with KEY() macro
* representing keymap
* @keymap_size: number of entries (initialized) in this keymap
*
* This structure is supposed to be used by platform code to supply
* keymaps to drivers that implement matrix-like keypads/keyboards.
*/
struct matrix_keymap_data {
const uint32_t *keymap;
unsigned int keymap_size;
};
int matrix_keypad_build_keymap(const struct matrix_keymap_data *keymap_data,
const char *keymap_name,
unsigned int rows, unsigned int cols,
unsigned short *keymap,
struct input_dev *input_dev);
int matrix_keypad_parse_properties(struct device *dev,
unsigned int *rows, unsigned int *cols);
#endif /* _MATRIX_KEYPAD_H */
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