| Message ID | 20230519200520.10657-1-alex@shruggie.ro |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [1/2] backlight: gpio_backlight: add new property default-brightness-level | expand |
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);
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);