linux-kernel - Re: [PATCH 12/13] video/backlight: LP855X needs PWM

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Date:	Fri, 25 Apr 2014 18:02:57 +0900
From:	Jingoo Han <jg1.han@...sung.com>
To:	'Peter Griffin' <peter.griffin@...aro.org>,
	linux-kernel@...r.kernel.org
Cc:	linaro-kernel@...ts.linaro.org, 'Arnd Bergmann' <arnd@...db.de>,
	'Milo Kim' <milo.kim@...com>, 'Bryan Wu' <cooloney@...il.com>,
	'Lee Jones' <lee.jones@...aro.org>,
	'Jean-Christophe Plagniol-Villard' <plagnioj@...osoft.com>,
	'Tomi Valkeinen' <tomi.valkeinen@...com>,
	linux-fbdev@...r.kernel.org, 'Jingoo Han' <jg1.han@...sung.com>
Subject: Re: [PATCH 12/13] video/backlight: LP855X needs PWM

On Thursday, April 24, 2014 9:28 PM, Peter Griffin wrote:
> 
> From: Arnd Bergmann <arnd@...db.de>
> 
> The LP855X driver cannot be successfully built if we don't
> enable the PWM subsystem. This patch makes that dependency
> explicit in Kconfig and prevents broken randconfig builds.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> Signed-off-by: Peter Griffin <peter.griffin@...aro.org>
> Cc: Jingoo Han <jg1.han@...sung.com>

Acked-by: Jingoo Han <jg1.han@...sung.com>

Best regards,
Jingoo Han

> Cc: Milo Kim <milo.kim@...com>
> Cc: Bryan Wu <cooloney@...il.com>
> Cc: Lee Jones <lee.jones@...aro.org>
> Cc: Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>
> Cc: Tomi Valkeinen <tomi.valkeinen@...com>
> Cc: linux-fbdev@...r.kernel.org
> ---
>  drivers/video/backlight/Kconfig |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig
> index 5675511..5d44905 100644
> --- a/drivers/video/backlight/Kconfig
> +++ b/drivers/video/backlight/Kconfig
> @@ -386,7 +386,7 @@ config BACKLIGHT_LM3639
> 
>  config BACKLIGHT_LP855X
>  	tristate "Backlight driver for TI LP855X"
> -	depends on BACKLIGHT_CLASS_DEVICE && I2C
> +	depends on BACKLIGHT_CLASS_DEVICE && I2C && PWM
>  	help
>  	  This supports TI LP8550, LP8551, LP8552, LP8553, LP8555, LP8556 and
>  	  LP8557 backlight driver.
> --
> 1.7.9.5

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