diff options
| author |   Johan Hovold <jhovold@gmail.com> | 2013-11-12 15:09:45 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2013-11-13 12:09:21 +0900 |
| commit | 81b62db56dbdfef8f3b596dc2845df7ee3ab2165 (patch) | |
| tree | d035c19baa65faeda0c3bbac854250a986ad7f6d /drivers | |
| parent | backlight: atmel-pwm-bl: use gpio_is_valid (diff) | |
| download | linux-dev-81b62db56dbdfef8f3b596dc2845df7ee3ab2165.tar.xz linux-dev-81b62db56dbdfef8f3b596dc2845df7ee3ab2165.zip | |
backlight: atmel-pwm-bl: refactor gpio_on handling
Add helper function to control the gpio_on signal.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/backlight/atmel-pwm-bl.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/drivers/video/backlight/atmel-pwm-bl.c b/drivers/video/backlight/atmel-pwm-bl.c index c2542095a04c..bd1ed342f87a 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); |