linux-kernel - Re: [PATCH v2 3/3] video: of: display_timing: Add support for syncclk-active property

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Date:   Thu, 29 Sep 2016 13:55:36 +0300
From:   Tomi Valkeinen <tomi.valkeinen@...com>
To:     Peter Ujfalusi <peter.ujfalusi@...com>, <robh+dt@...nel.org>,
        <airlied@...ux.ie>, <thierry.reding@...il.com>
CC:     <linux-fbdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <daniel.vetter@...ll.ch>, <dri-devel@...ts.freedesktop.org>,
        <devicetree@...r.kernel.org>
Subject: Re: [PATCH v2 3/3] video: of: display_timing: Add support for
 syncclk-active property

On 22/09/16 13:35, Peter Ujfalusi wrote:
> Configure the DISPLAY_FLAGS_SYNC_POSEDGE/NEGEDGE flags according to the
> binding document.
> If the syncclk-active is present in DT, configure the flags accordingly, if
> it is omitted it means that the SYNC edge is following the pixdata
> configuration.
> 
> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
> CC: Rob Herring <robh+dt@...nel.org>
> CC: Mark Rutland <mark.rutland@....com>
> CC: devicetree@...r.kernel.org
> ---
>  drivers/video/of_display_timing.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/drivers/video/of_display_timing.c b/drivers/video/of_display_timing.c
> index 8a1076beecd3..db992c684f09 100644
> --- a/drivers/video/of_display_timing.c
> +++ b/drivers/video/of_display_timing.c
> @@ -88,6 +88,15 @@ static int of_parse_display_timing(const struct device_node *np,
>  		dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE :
>  				DISPLAY_FLAGS_PIXDATA_NEGEDGE;
>  
> +	if (!of_property_read_u32(np, "syncclk-active", &val))
> +		dt->flags |= val ? DISPLAY_FLAGS_SYNC_POSEDGE :
> +				DISPLAY_FLAGS_SYNC_NEGEDGE;
> +	else if (dt->flags & (DISPLAY_FLAGS_PIXDATA_POSEDGE |
> +			      DISPLAY_FLAGS_PIXDATA_NEGEDGE))
> +		dt->flags |= dt->flags & DISPLAY_FLAGS_PIXDATA_POSEDGE ?
> +				DISPLAY_FLAGS_SYNC_POSEDGE :
> +				DISPLAY_FLAGS_SYNC_NEGEDGE;
> +
>  	if (of_property_read_bool(np, "interlaced"))
>  		dt->flags |= DISPLAY_FLAGS_INTERLACED;
>  	if (of_property_read_bool(np, "doublescan"))
> 

Reviewed-by: Tomi Valkeinen <tomi.valkeinen@...com>

 Tomi



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