[PATCH v3 8/9] backlight: atmel-pwm-bl: refactor gpio_on handling

From: Johan Hovold
Date: Thu Oct 31 2013 - 13:59:50 EST


Add helper function to control the gpio_on signal.

Acked-by: Jingoo Han <jg1.han@xxxxxxxxxxx>
Signed-off-by: Johan Hovold <jhovold@xxxxxxxxx>
---
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 c254209..bd1ed34 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);

--
1.8.4.2

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/