diff mbox series

[1/2] backlight: gpio_backlight: add new property default-brightness-level

Message ID 20230519200520.10657-1-alex@shruggie.ro (mailing list archive)
State Handled Elsewhere
Headers show
Series [1/2] backlight: gpio_backlight: add new property default-brightness-level | expand

Commit Message

Alexandru Ardelean May 19, 2023, 8:05 p.m. UTC
From: Yannick Fertre <yannick.fertre@foss.st.com>

Add new property to set a brightness by default at probe.

Reviewed-by: Philippe CORNU <philippe.cornu@foss.st.com>
Signed-off-by: Yannick Fertre <yannick.fertre@foss.st.com>
Signed-off-by: Alexandru Ardelean <alex@shruggie.ro>
---

Link to original patch:
  https://github.com/STMicroelectronics/linux/commit/c4067d7bd883c6fa14ffd49892c4ce663cdafe98

 drivers/video/backlight/gpio_backlight.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

Comments

Daniel Thompson May 26, 2023, 10:27 a.m. UTC | #1
On Fri, May 19, 2023 at 11:05:19PM +0300, Alexandru Ardelean wrote:
> From: Yannick Fertre <yannick.fertre@foss.st.com>
>
> Add new property to set a brightness by default at probe.
>
> Reviewed-by: Philippe CORNU <philippe.cornu@foss.st.com>
> Signed-off-by: Yannick Fertre <yannick.fertre@foss.st.com>
> Signed-off-by: Alexandru Ardelean <alex@shruggie.ro>

Patch order should be reversed for v2. Nevertheless:
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>


Daniel.

>  	struct backlight_device *bl;
>  	struct gpio_backlight *gbl;
>  	int ret, init_brightness, def_value;
> +	u32 value;
>
>  	gbl = devm_kzalloc(dev, sizeof(*gbl), GFP_KERNEL);
>  	if (gbl == NULL)
> @@ -93,7 +94,11 @@ static int gpio_backlight_probe(struct platform_device *pdev)
>  	else
>  		bl->props.power = FB_BLANK_UNBLANK;
>
> -	bl->props.brightness = 1;
> +	ret = device_property_read_u32(dev, "default-brightness-level", &value);
> +	if (!ret && value <= props.max_brightness)
> +		bl->props.brightness = value;
> +	else
> +		bl->props.brightness = 1;
>
>  	init_brightness = backlight_get_brightness(bl);
>  	ret = gpiod_direction_output(gbl->gpiod, init_brightness);
> --
> 2.40.1
>
Philippe CORNU May 26, 2023, 12:04 p.m. UTC | #2
On 5/19/23 22:05, Alexandru Ardelean wrote:
> From: Yannick Fertre <yannick.fertre@foss.st.com>
> 
> Add new property to set a brightness by default at probe.
> 
> Reviewed-by: Philippe CORNU <philippe.cornu@foss.st.com>

Hi Alexandru,

Many thanks for your patch.

You have sent a patch originally pushed on the STMicroelectronics github 
as mentioned in your commit message (no problem with that :-). But, the 
"Reviewed-by" inside this github patch is linked to our gerrit STM 
internal server so you can not use it directly for mainlining this patch.

So please, re-send your this patch without my "Reviewed-by".

Many thanks
Philippe :-)


> Signed-off-by: Yannick Fertre <yannick.fertre@foss.st.com>
> Signed-off-by: Alexandru Ardelean <alex@shruggie.ro>
> ---
> 
> Link to original patch:
>    https://github.com/STMicroelectronics/linux/commit/c4067d7bd883c6fa14ffd49892c4ce663cdafe98
> 
>   drivers/video/backlight/gpio_backlight.c | 7 ++++++-
>   1 file changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c
> index 6f78d928f054..d3fa3a8bef4d 100644
> --- a/drivers/video/backlight/gpio_backlight.c
> +++ b/drivers/video/backlight/gpio_backlight.c
> @@ -53,6 +53,7 @@ static int gpio_backlight_probe(struct platform_device *pdev)
>   	struct backlight_device *bl;
>   	struct gpio_backlight *gbl;
>   	int ret, init_brightness, def_value;
> +	u32 value;
>   
>   	gbl = devm_kzalloc(dev, sizeof(*gbl), GFP_KERNEL);
>   	if (gbl == NULL)
> @@ -93,7 +94,11 @@ static int gpio_backlight_probe(struct platform_device *pdev)
>   	else
>   		bl->props.power = FB_BLANK_UNBLANK;
>   
> -	bl->props.brightness = 1;
> +	ret = device_property_read_u32(dev, "default-brightness-level", &value);
> +	if (!ret && value <= props.max_brightness)
> +		bl->props.brightness = value;
> +	else
> +		bl->props.brightness = 1;
>   
>   	init_brightness = backlight_get_brightness(bl);
>   	ret = gpiod_direction_output(gbl->gpiod, init_brightness);
Alexandru Ardelean May 29, 2023, 7:02 a.m. UTC | #3
On Fri, May 26, 2023 at 3:04 PM Philippe CORNU
<philippe.cornu@foss.st.com> wrote:
>
>
> On 5/19/23 22:05, Alexandru Ardelean wrote:
> > From: Yannick Fertre <yannick.fertre@foss.st.com>
> >
> > Add new property to set a brightness by default at probe.
> >
> > Reviewed-by: Philippe CORNU <philippe.cornu@foss.st.com>
>
> Hi Alexandru,
>
> Many thanks for your patch.
>
> You have sent a patch originally pushed on the STMicroelectronics github
> as mentioned in your commit message (no problem with that :-). But, the
> "Reviewed-by" inside this github patch is linked to our gerrit STM
> internal server so you can not use it directly for mainlining this patch.
>
> So please, re-send your this patch without my "Reviewed-by".

ack
will do

>
> Many thanks
> Philippe :-)
>
>
> > Signed-off-by: Yannick Fertre <yannick.fertre@foss.st.com>
> > Signed-off-by: Alexandru Ardelean <alex@shruggie.ro>
> > ---
> >
> > Link to original patch:
> >    https://github.com/STMicroelectronics/linux/commit/c4067d7bd883c6fa14ffd49892c4ce663cdafe98
> >
> >   drivers/video/backlight/gpio_backlight.c | 7 ++++++-
> >   1 file changed, 6 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c
> > index 6f78d928f054..d3fa3a8bef4d 100644
> > --- a/drivers/video/backlight/gpio_backlight.c
> > +++ b/drivers/video/backlight/gpio_backlight.c
> > @@ -53,6 +53,7 @@ static int gpio_backlight_probe(struct platform_device *pdev)
> >       struct backlight_device *bl;
> >       struct gpio_backlight *gbl;
> >       int ret, init_brightness, def_value;
> > +     u32 value;
> >
> >       gbl = devm_kzalloc(dev, sizeof(*gbl), GFP_KERNEL);
> >       if (gbl == NULL)
> > @@ -93,7 +94,11 @@ static int gpio_backlight_probe(struct platform_device *pdev)
> >       else
> >               bl->props.power = FB_BLANK_UNBLANK;
> >
> > -     bl->props.brightness = 1;
> > +     ret = device_property_read_u32(dev, "default-brightness-level", &value);
> > +     if (!ret && value <= props.max_brightness)
> > +             bl->props.brightness = value;
> > +     else
> > +             bl->props.brightness = 1;
> >
> >       init_brightness = backlight_get_brightness(bl);
> >       ret = gpiod_direction_output(gbl->gpiod, init_brightness);
diff mbox series

Patch

diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c
index 6f78d928f054..d3fa3a8bef4d 100644
--- a/drivers/video/backlight/gpio_backlight.c
+++ b/drivers/video/backlight/gpio_backlight.c
@@ -53,6 +53,7 @@  static int gpio_backlight_probe(struct platform_device *pdev)
 	struct backlight_device *bl;
 	struct gpio_backlight *gbl;
 	int ret, init_brightness, def_value;
+	u32 value;
 
 	gbl = devm_kzalloc(dev, sizeof(*gbl), GFP_KERNEL);
 	if (gbl == NULL)
@@ -93,7 +94,11 @@  static int gpio_backlight_probe(struct platform_device *pdev)
 	else
 		bl->props.power = FB_BLANK_UNBLANK;
 
-	bl->props.brightness = 1;
+	ret = device_property_read_u32(dev, "default-brightness-level", &value);
+	if (!ret && value <= props.max_brightness)
+		bl->props.brightness = value;
+	else
+		bl->props.brightness = 1;
 
 	init_brightness = backlight_get_brightness(bl);
 	ret = gpiod_direction_output(gbl->gpiod, init_brightness);