[PATCH RESEND 4/4] backlight: tosa: Use backlight helper

[PATCH RESEND 4/4] backlight: tosa: Use backlight helper

[Stephen Kitt]

Instead of retrieving the backlight brightness in struct
backlight_properties manually, and then checking whether the backlight
should be on at all, use backlight_get_brightness() which does all
this and insulates this from future changes.

Signed-off-by: Stephen Kitt <steve@sk2.org>
---
 drivers/video/backlight/tosa_bl.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/video/backlight/tosa_bl.c b/drivers/video/backlight/tosa_bl.c
index 77b71f6c19b5..e338b1f00f6a 100644
--- a/drivers/video/backlight/tosa_bl.c
+++ b/drivers/video/backlight/tosa_bl.c
@@ -50,13 +50,8 @@ static void tosa_bl_set_backlight(struct tosa_bl_data *data, int brightness)
 
 static int tosa_bl_update_status(struct backlight_device *dev)
 {
-	struct backlight_properties *props = &dev->props;
 	struct tosa_bl_data *data = bl_get_data(dev);
-	int power = max(props->power, props->fb_blank);
-	int brightness = props->brightness;
-
-	if (power)
-		brightness = 0;
+	int brightness = backlight_get_brightness(dev);
 
 	tosa_bl_set_backlight(data, brightness);
 
-- 
2.30.2

Re: [PATCH RESEND 4/4] backlight: tosa: Use backlight helper

[Sam Ravnborg]

On Fri, Jan 06, 2023 at 05:48:55PM +0100, Stephen Kitt wrote:
> Instead of retrieving the backlight brightness in struct
> backlight_properties manually, and then checking whether the backlight
> should be on at all, use backlight_get_brightness() which does all
> this and insulates this from future changes.
> 
> Signed-off-by: Stephen Kitt <steve@sk2.org>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
> ---
>  drivers/video/backlight/tosa_bl.c | 7 +------
>  1 file changed, 1 insertion(+), 6 deletions(-)
> 
> diff --git a/drivers/video/backlight/tosa_bl.c b/drivers/video/backlight/tosa_bl.c
> index 77b71f6c19b5..e338b1f00f6a 100644
> --- a/drivers/video/backlight/tosa_bl.c
> +++ b/drivers/video/backlight/tosa_bl.c
> @@ -50,13 +50,8 @@ static void tosa_bl_set_backlight(struct tosa_bl_data *data, int brightness)
>  
>  static int tosa_bl_update_status(struct backlight_device *dev)
>  {
> -	struct backlight_properties *props = &dev->props;
>  	struct tosa_bl_data *data = bl_get_data(dev);
> -	int power = max(props->power, props->fb_blank);
> -	int brightness = props->brightness;
> -
> -	if (power)
> -		brightness = 0;
> +	int brightness = backlight_get_brightness(dev);
>  
>  	tosa_bl_set_backlight(data, brightness);
>  
> -- 
> 2.30.2

Re: [PATCH RESEND 4/4] backlight: tosa: Use backlight helper

[Sam Ravnborg]

On Fri, Jan 06, 2023 at 05:48:55PM +0100, Stephen Kitt wrote:
> Instead of retrieving the backlight brightness in struct
> backlight_properties manually, and then checking whether the backlight
> should be on at all, use backlight_get_brightness() which does all
> this and insulates this from future changes.
> 
> Signed-off-by: Stephen Kitt <steve@sk2.org>
I just realized...

This driver is about to be deleted by Arnd's effort to remove
the PXA platform, so the patch is not relevant and can be ignored.

See https://lore.kernel.org/dri-devel/20221019161831.3864786-1-arnd@kernel.org/

	Sam

> ---
>  drivers/video/backlight/tosa_bl.c | 7 +------
>  1 file changed, 1 insertion(+), 6 deletions(-)
> 
> diff --git a/drivers/video/backlight/tosa_bl.c b/drivers/video/backlight/tosa_bl.c
> index 77b71f6c19b5..e338b1f00f6a 100644
> --- a/drivers/video/backlight/tosa_bl.c
> +++ b/drivers/video/backlight/tosa_bl.c
> @@ -50,13 +50,8 @@ static void tosa_bl_set_backlight(struct tosa_bl_data *data, int brightness)
>  
>  static int tosa_bl_update_status(struct backlight_device *dev)
>  {
> -	struct backlight_properties *props = &dev->props;
>  	struct tosa_bl_data *data = bl_get_data(dev);
> -	int power = max(props->power, props->fb_blank);
> -	int brightness = props->brightness;
> -
> -	if (power)
> -		brightness = 0;
> +	int brightness = backlight_get_brightness(dev);
>  
>  	tosa_bl_set_backlight(data, brightness);
>  
> -- 
> 2.30.2

Re: [PATCH RESEND 4/4] backlight: tosa: Use backlight helper

[Daniel Thompson]

On Fri, Jan 06, 2023 at 05:48:55PM +0100, Stephen Kitt wrote:
> Instead of retrieving the backlight brightness in struct
> backlight_properties manually, and then checking whether the backlight
> should be on at all, use backlight_get_brightness() which does all
> this and insulates this from future changes.
>
> Signed-off-by: Stephen Kitt <steve@sk2.org>

For the tools:
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>


D.