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Subject[PATCH v1 7/8] drm: rockchip: analogix_dp: correct the connector display color format and bpc
Date
Rockchip VOP couldn't output YUV video format for eDP controller, so
when driver detect connector support YUV video format, we need to hack
it down to RGB888.

Signed-off-by: Yakir Yang <ykk@rock-chips.com>
---
drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)

diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
index adb38b2..a51e086 100644
--- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
+++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
@@ -102,6 +102,24 @@ static int rockchip_dp_powerdown(struct analogix_dp_plat_data *plat_data)
return 0;
}

+static enum drm_mode_status
+rockchip_dp_mode_valid(struct analogix_dp_plat_data *plat_data,
+ struct drm_connector *connector,
+ struct drm_display_mode *mode)
+{
+ struct drm_display_info *di = &connector->display_info;
+
+ if (di->color_formats & DRM_COLOR_FORMAT_YCRCB444 ||
+ di->color_formats & DRM_COLOR_FORMAT_YCRCB422) {
+ di->color_formats &= ~(DRM_COLOR_FORMAT_YCRCB422 |
+ DRM_COLOR_FORMAT_YCRCB444);
+ di->color_formats |= DRM_COLOR_FORMAT_RGB444;
+ di->bpc = 8;
+ }
+
+ return MODE_OK;
+}
+
static bool
rockchip_dp_drm_encoder_mode_fixup(struct drm_encoder *encoder,
const struct drm_display_mode *mode,
@@ -300,6 +318,7 @@ static int rockchip_dp_bind(struct device *dev, struct device *master,
dp->plat_data.dev_type = ROCKCHIP_DP;
dp->plat_data.power_on = rockchip_dp_poweron;
dp->plat_data.power_off = rockchip_dp_powerdown;
+ dp->plat_data.mode_valid = rockchip_dp_mode_valid;

return analogix_dp_bind(dev, dp->drm_dev, &dp->plat_data);
}
--
1.9.1

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