[PATCH v2 08/10] drm/rockchip: analogix_dp: correct the connector display color format and bpc

Yakir Yang
2016-05-24T05:02:56Z

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>
---
Changes in v2: None

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 f29ca3d..910cceb 100644
--- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
+++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
@@ -97,6 +97,24 @@ 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,
@@ -306,6 +324,7 @@ static int rockchip_dp_bind(struct device *dev, struct device *master,
dp->plat_data.subdev_type = dp_data->chip_type;
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