[PATCH v3 09/10] drm/rockchip: analogix_dp: update the comments about why need to hardcode VOP output mode
seanpaul at chromium.org
Thu Jun 23 07:22:58 PDT 2016
On Tue, Jun 14, 2016 at 7:46 AM, Yakir Yang <ykk at rock-chips.com> wrote:
> The hardware IC designed that VOP must output the RGB10 video format to
> eDP contoller, and if eDP panel only support RGB8, then eDP contoller
> should cut down the video data, not via VOP contoller, that's why we need
> to hardcode the VOP output mode to RGA10 here.
> Signed-off-by: Yakir Yang <ykk at rock-chips.com>
> Acked-by: Mark Yao <mark.yao at rock-chips.com>
> Reviewed-by: Tomasz Figa <tomasz.figa at chromium.com>
> Changes in v3:
> - Add the reviewed flag from Tomasz.
> - Add the acked flag from Mark.
> Changes in v2:
> - new patch in v2
> drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 16 +++++-----------
> 1 file changed, 5 insertions(+), 11 deletions(-)
> diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
> index 95a6f60..2ceb3f9 100644
> --- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
> +++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
> @@ -173,17 +173,11 @@ rockchip_dp_drm_encoder_atomic_check(struct drm_encoder *encoder,
> int ret;
> - * FIXME(Yakir): driver should configure the CRTC output video
> - * mode with the display information which indicated the monitor
> - * support colorimetry.
> - *
> - * But don't know why the CRTC driver seems could only output the
> - * RGBaaa rightly. For example, if connect the "innolux,n116bge"
> - * eDP screen, EDID would indicated that screen only accepted the
> - * 6bpc mode. But if I configure CRTC to RGB666 output, then eDP
> - * screen would show a blue picture (RGB888 show a green picture).
> - * But if I configure CTRC to RGBaaa, and eDP driver still keep
> - * RGB666 input video mode, then screen would works prefect.
> + * The hardware IC designed that VOP must output the RGB10 video
> + * format to eDP contoller, and if eDP panel only support RGB8,
> + * then eDP contoller should cut down the video data, not via VOP
> + * contoller, that's why we need to hardcode the VOP output mode
> + * to RGA10 here.
> ret = drm_of_encoder_active_endpoint_id(dp->dev->of_node, encoder);
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