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Commit 77a53fd2 authored by Dmitry Torokhov's avatar Dmitry Torokhov
Browse files

Input: matrix-keypad - add function to build device keymap 



Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
parent 8fbac18e

drivers/input/keyboard/matrix_keypad.c

+3 −12
Original line number Diff line number Diff line
@@ -319,7 +319,6 @@ static int __devinit matrix_keypad_probe(struct platform_device *pdev) 
	struct input_dev *input_dev;

	unsigned short *keycodes;

	unsigned int row_shift;

	int i;

	int err;



	pdata = pdev->dev.platform_data;
@@ -363,18 +362,10 @@ static int __devinit matrix_keypad_probe(struct platform_device *pdev) 


	input_dev->keycode	= keycodes;

	input_dev->keycodesize	= sizeof(*keycodes);

	input_dev->keycodemax	= pdata->num_row_gpios << keypad->row_shift;



	for (i = 0; i < keymap_data->keymap_size; i++) {

		unsigned int key = keymap_data->keymap[i];

		unsigned int row = KEY_ROW(key);

		unsigned int col = KEY_COL(key);

		unsigned short code = KEY_VAL(key);

	input_dev->keycodemax	= pdata->num_row_gpios << row_shift;



		keycodes[MATRIX_SCAN_CODE(row, col, row_shift)] = code;

		__set_bit(code, input_dev->keybit);

	}

	__clear_bit(KEY_RESERVED, input_dev->keybit);

	matrix_keypad_build_keymap(keymap_data, row_shift,

				   input_dev->keycode, input_dev->keybit);



	input_set_capability(input_dev, EV_MSC, MSC_SCAN);

	input_set_drvdata(input_dev, keypad);

drivers/input/keyboard/w90p910_keypad.c

+2 −14
Original line number Diff line number Diff line
@@ -126,7 +126,6 @@ static int __devinit w90p910_keypad_probe(struct platform_device *pdev) 
	struct resource *res;

	int irq;

	int error;

	int i;



	if (!pdata) {

		dev_err(&pdev->dev, "no platform data defined\n");
@@ -197,19 +196,8 @@ static int __devinit w90p910_keypad_probe(struct platform_device *pdev) 
	input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);

	input_set_capability(input_dev, EV_MSC, MSC_SCAN);



	for (i = 0; i < keymap_data->keymap_size; i++) {

		unsigned int key = keymap_data->keymap[i];

		unsigned int row = KEY_ROW(key);

		unsigned int col = KEY_COL(key);

		unsigned short keycode = KEY_VAL(key);

		unsigned int scancode = MATRIX_SCAN_CODE(row, col,

							 W90P910_ROW_SHIFT);



		keypad->keymap[scancode] = keycode;

		__set_bit(keycode, input_dev->keybit);

	}

	__clear_bit(KEY_RESERVED, input_dev->keybit);



	matrix_keypad_build_keymap(keymap_data, W90P910_ROW_SHIFT,

				   input_dev->keycode, input_dev->keybit);



	error = request_irq(keypad->irq, w90p910_keypad_irq_handler,

			    IRQF_DISABLED, pdev->name, keypad);

include/linux/input/matrix_keypad.h

+32 −0
Original line number Diff line number Diff line
@@ -63,4 +63,36 @@ struct matrix_keypad_platform_data { 
	bool		wakeup;

};



/**

 * matrix_keypad_build_keymap - convert platform keymap into matrix keymap

 * @keymap_data: keymap supplied by the platform code

 * @row_shift: number of bits to shift row value by to advance to the next

 * line in the keymap

 * @keymap: expanded version of keymap that is suitable for use by

 * matrix keyboad driver

 * @keybit: pointer to bitmap of keys supported by input device

 *

 * This function converts platform keymap (encoded with KEY() macro) into

 * an array of keycodes that is suitable for using in a standard matrix

 * keyboard driver that uses row and col as indices.

 */

static inline void

matrix_keypad_build_keymap(const struct matrix_keymap_data *keymap_data,

			   unsigned int row_shift,

			   unsigned short *keymap, unsigned long *keybit)

{

	int i;



	for (i = 0; i < keymap_data->keymap_size; i++) {

		unsigned int key = keymap_data->keymap[i];

		unsigned int row = KEY_ROW(key);

		unsigned int col = KEY_COL(key);

		unsigned short code = KEY_VAL(key);



		keymap[MATRIX_SCAN_CODE(row, col, row_shift)] = code;

		__set_bit(code, keybit);

	}

	__clear_bit(KEY_RESERVED, keybit);

}



#endif /* _MATRIX_KEYPAD_H */