linux-kernel - [PATCH 8/9] backlight: atmel-pwm-bl: refactor gpio

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Date:	Tue, 22 Oct 2013 19:26:58 +0200
From:	Johan Hovold <jhovold@...il.com>
To:	Richard Purdie <rpurdie@...ys.net>,
	Jingoo Han <jg1.han@...sung.com>
Cc:	Nicolas Ferre <nicolas.ferre@...el.com>,
	linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	Johan Hovold <jhovold@...il.com>
Subject: [PATCH 8/9] backlight: atmel-pwm-bl: refactor gpio_on handling

Add helper function to control the gpio_on signal.

Signed-off-by: Johan Hovold <jhovold@...il.com>
---
 drivers/video/backlight/atmel-pwm-bl.c | 23 +++++++++++------------
 1 file changed, 11 insertions(+), 12 deletions(-)

diff --git a/drivers/video/backlight/atmel-pwm-bl.c b/drivers/video/backlight/atmel-pwm-bl.c
index ffc30d2..1277e0c 100644
--- a/drivers/video/backlight/atmel-pwm-bl.c
+++ b/drivers/video/backlight/atmel-pwm-bl.c
@@ -26,6 +26,14 @@ struct atmel_pwm_bl {
 	int					gpio_on;
 };
 
+static void atmel_pwm_bl_set_gpio_on(struct atmel_pwm_bl *pwmbl, int on)
+{
+	if (!gpio_is_valid(pwmbl->gpio_on))
+		return;
+
+	gpio_set_value(pwmbl->gpio_on, on ^ pwmbl->pdata->on_active_low);
+}
+
 static int atmel_pwm_bl_set_intensity(struct backlight_device *bd)
 {
 	struct atmel_pwm_bl *pwmbl = bl_get_data(bd);
@@ -48,19 +56,13 @@ static int atmel_pwm_bl_set_intensity(struct backlight_device *bd)
 		pwm_duty = pwmbl->pdata->pwm_duty_min;
 
 	if (!intensity) {
-		if (gpio_is_valid(pwmbl->gpio_on)) {
-			gpio_set_value(pwmbl->gpio_on,
-					0 ^ pwmbl->pdata->on_active_low);
-		}
+		atmel_pwm_bl_set_gpio_on(pwmbl, 0);
 		pwm_channel_writel(&pwmbl->pwmc, PWM_CUPD, pwm_duty);
 		pwm_channel_disable(&pwmbl->pwmc);
 	} else {
 		pwm_channel_enable(&pwmbl->pwmc);
 		pwm_channel_writel(&pwmbl->pwmc, PWM_CUPD, pwm_duty);
-		if (gpio_is_valid(pwmbl->gpio_on)) {
-			gpio_set_value(pwmbl->gpio_on,
-					1 ^ pwmbl->pdata->on_active_low);
-		}
+		atmel_pwm_bl_set_gpio_on(pwmbl, 1);
 	}
 
 	return 0;
@@ -196,10 +198,7 @@ static int atmel_pwm_bl_remove(struct platform_device *pdev)
 {
 	struct atmel_pwm_bl *pwmbl = platform_get_drvdata(pdev);
 
-	if (gpio_is_valid(pwmbl->gpio_on)) {
-		gpio_set_value(pwmbl->gpio_on,
-					0 ^ pwmbl->pdata->on_active_low);
-	}
+	atmel_pwm_bl_set_gpio_on(pwmbl, 0);
 	pwm_channel_disable(&pwmbl->pwmc);
 	pwm_channel_free(&pwmbl->pwmc);
 
-- 
1.8.4

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