linux-kernel - [PATCH 2/3] max7359_keypad: remove code duplication

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Message-ID: <20150514023628.GB28560@fifteen>
Date:	Thu, 14 May 2015 05:36:28 +0300
From:	Evgeniy Dushistov <dushistov@...l.ru>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/3] max7359_keypad: remove code duplication

max7359_keypad: remove code duplication,
 max7359_build_keycode do the same thing as matrix_keypad_build_keymap, but
 matrix_keypad_build_keymap can also handle DT bindings, so remove
 max7359_build_keycode and use matrix_keypad_build_keymap instead. Tested on
 beagleboard-xm.

Signed-off-by: Evgeniy A. Dushistov <dushistov@...l.ru>
---
 drivers/input/keyboard/Kconfig          |  1 +
 drivers/input/keyboard/max7359_keypad.c | 30 +++++++++---------------------
 2 files changed, 10 insertions(+), 21 deletions(-)

diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index 106fbac..4d75062 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -367,6 +367,7 @@ config KEYBOARD_MAPLE
 
 config KEYBOARD_MAX7359
 	tristate "Maxim MAX7359 Key Switch Controller"
+	select INPUT_MATRIXKMAP
 	depends on I2C
 	help
 	  If you say yes here you get support for the Maxim MAX7359 Key
diff --git a/drivers/input/keyboard/max7359_keypad.c b/drivers/input/keyboard/max7359_keypad.c
index 4e35904..5091133 100644
--- a/drivers/input/keyboard/max7359_keypad.c
+++ b/drivers/input/keyboard/max7359_keypad.c
@@ -84,26 +84,6 @@ static int max7359_read_reg(struct i2c_client *client, int reg)
 	return ret;
 }
 
-static void max7359_build_keycode(struct max7359_keypad *keypad,
-				const struct matrix_keymap_data *keymap_data)
-{
-	struct input_dev *input_dev = keypad->input_dev;
-	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 int scancode = MATRIX_SCAN_CODE(row, col,
-						MAX7359_ROW_SHIFT);
-		unsigned short keycode = KEY_VAL(key);
-
-		keypad->keycodes[scancode] = keycode;
-		__set_bit(keycode, input_dev->keybit);
-	}
-	__clear_bit(KEY_RESERVED, input_dev->keybit);
-}
-
 /* runs in an IRQ thread -- can (and will!) sleep */
 static irqreturn_t max7359_interrupt(int irq, void *dev_id)
 {
@@ -232,7 +212,15 @@ static int max7359_probe(struct i2c_client *client,
 	input_set_capability(input_dev, EV_MSC, MSC_SCAN);
 	input_set_drvdata(input_dev, keypad);
 
-	max7359_build_keycode(keypad, keymap_data);
+	error = matrix_keypad_build_keymap(keymap_data, NULL,
+					   MAX7359_MAX_KEY_ROWS,
+					   MAX7359_MAX_KEY_COLS,
+					   keypad->keycodes,
+					   input_dev);
+	if (error) {
+		dev_err(&client->dev, "failed to build keymap\n");
+		return error;
+	}
 
 	error = devm_request_threaded_irq(&client->dev, client->irq, NULL,
 					  max7359_interrupt,
-- 
2.3.6

-- 
/Evgeniy
--
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