linux-kernel - Re: [PATCH v18 08/10] drm/omapdrm: Use backlight

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Date:   Tue, 23 Jan 2018 15:20:11 +0100
From:   Noralf Trønnes <noralf@...nnes.org>
To:     Meghana Madhyastha <meghana.madhyastha@...il.com>,
        Lee Jones <lee.jones@...aro.org>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Jingoo Han <jingoohan1@...il.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Tomi Valkeinen <tomi.valkeinen@...com>,
        Daniel Vetter <daniel.vetter@...el.com>,
        Sean Paul <seanpaul@...omium.org>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v18 08/10] drm/omapdrm: Use backlight_enable/disable
 helpers


Den 22.01.2018 15.54, skrev Meghana Madhyastha:
> Use backlight_enable/disable helpers instead of changing
> the property and calling backlight_update_status for cleaner
> and simpler code and also to avoid repetitions.
>
> Signed-off-by: Meghana Madhyastha <meghana.madhyastha@...il.com>
> ---

Reviewed-by: Noralf Trønnes<noralf@...nnes.org>


>   drivers/gpu/drm/omapdrm/displays/panel-dpi.c | 11 ++---------
>   1 file changed, 2 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dpi.c b/drivers/gpu/drm/omapdrm/displays/panel-dpi.c
> index e065f7e10..ac9596251 100644
> --- a/drivers/gpu/drm/omapdrm/displays/panel-dpi.c
> +++ b/drivers/gpu/drm/omapdrm/displays/panel-dpi.c
> @@ -87,11 +87,7 @@ static int panel_dpi_enable(struct omap_dss_device *dssdev)
>   	}
>   
>   	gpiod_set_value_cansleep(ddata->enable_gpio, 1);
> -
> -	if (ddata->backlight) {
> -		ddata->backlight->props.power = FB_BLANK_UNBLANK;
> -		backlight_update_status(ddata->backlight);
> -	}
> +	backlight_enable(ddata->backlight);
>   
>   	dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
>   
> @@ -106,10 +102,7 @@ static void panel_dpi_disable(struct omap_dss_device *dssdev)
>   	if (!omapdss_device_is_enabled(dssdev))
>   		return;
>   
> -	if (ddata->backlight) {
> -		ddata->backlight->props.power = FB_BLANK_POWERDOWN;
> -		backlight_update_status(ddata->backlight);
> -	}
> +	backlight_disable(ddata->backlight);
>   
>   	gpiod_set_value_cansleep(ddata->enable_gpio, 0);
>   	regulator_disable(ddata->vcc_supply);