[PATCH v6 4/4] backlight: rt4831: Adds support for Richtek RT4831 backlight

[Daniel Thompson]

On Sun, Mar 28, 2021 at 11:24:19PM +0800, cy_huang wrote:
> From: ChiYuan Huang <cy_huang at richtek.com>
> 
> Adds support for Richtek RT4831 backlight.
> 
> Signed-off-by: ChiYuan Huang <cy_huang at richtek.com>
> ---
> since v6
> - Fix Kconfig typo.
> - Remove internal mutex lock.
> - Add the prefix for max brightness.
> - rename init_device_properties to parse_backlight_properties.
> - Remove some warning message if default value is adopted.
> - Add backlight property scale to LINEAR mapping.
> - Fix regmap get to check NULL not IS_ERR.
> ---
>  drivers/video/backlight/Kconfig            |   8 ++
>  drivers/video/backlight/Makefile           |   1 +
>  drivers/video/backlight/rt4831-backlight.c | 203 +++++++++++++++++++++++++++++
>  3 files changed, 212 insertions(+)
>  create mode 100644 drivers/video/backlight/rt4831-backlight.c
> 
> diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig
> index d83c87b..de96441 100644
> --- a/drivers/video/backlight/Kconfig
> +++ b/drivers/video/backlight/Kconfig
> @@ -289,6 +289,14 @@ config BACKLIGHT_QCOM_WLED
>  	  If you have the Qualcomm PMIC, say Y to enable a driver for the
>  	  WLED block. Currently it supports PM8941 and PMI8998.
>  
> +config BACKLIGHT_RT4831
> +	tristate "Richtek RT4831 Backlight Driver"
> +	depends on MFD_RT4831
> +	help
> +	  This enables support for Richtek RT4831 Backlight driver.
> +	  It's common used to drive the display WLED. There're four channels

Nitpicking but I was expecting the original typo be converted to
"commonly".


With that addressed:
Reviewed-by: Daniel Thompson <daniel.thompson at linaro.org>


Daniel.