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Re: [PATCH v2 1/3] drm/fsl-dcu: use mode flags for hsync/vsync polarity

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  Re: [PATCH v2 1/3] drm/fsl-dcu: use mode flags for hsync/vsync  polarity Thierry Reding <thierry.reding@gmail.com> - 2016-02-25 17:50 +0100

#1343309 — Re: [PATCH v2 1/3] drm/fsl-dcu: use mode flags for hsync/vsync polarity

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On Mon, Feb 08, 2016 at 01:57:41PM -0800, Stefan Agner wrote:
> The current default configuration is as follows:
> - Invert VSYNC signal (active LOW)
> - Invert HSYNC signal (active LOW)
> 
> The mode flags allow to specify the required polarity per
> mode. Furthermore, none of the current driver settings is
> actually a standard polarity.
> 
> This patch applies the current driver default polarities as
> explicit flags to the display which has been introduced with
> the driver (NEC WQVGA "nec,nl4827hc19-05b"). The driver now
> also parses the flags field and applies the configuration
> accordingly, by using the following values as standard
> polarities: (e.g. when no flags are specified):
> - VSYNC signal not inverted (active HIGH)
> - HSYNC signal not inverted (active HIGH)
> 
> Signed-off-by: Stefan Agner <stefan@agner.ch>
> ---
>  drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_crtc.c | 11 ++++++++---
>  drivers/gpu/drm/panel/panel-simple.c       |  1 +
>  2 files changed, 9 insertions(+), 3 deletions(-)

Acked-by: Thierry Reding <treding@nvidia.com>

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