With the introduction of the supported_formats member in the dw-hdmi-qp platform data struct, drivers that have access to this information should now set it.
Set it in the rockchip dw_hdmi_qp glue driver, where such a bitmask of supported color formats already exists. It just needs to be converted to the appropriate HDMI_COLORSPACE_ mask. This allows this information to be passed down to the dw-hdmi-qp core, which sets it in the bridge it creates, and consequently will allow the common HDMI bridge code to act on it. Signed-off-by: Nicolas Frattaroli <[email protected]> --- drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c index c9fe6aa3e3e3..7c294751de19 100644 --- a/drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c +++ b/drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c @@ -468,6 +468,28 @@ static const struct of_device_id dw_hdmi_qp_rockchip_dt_ids[] = { }; MODULE_DEVICE_TABLE(of, dw_hdmi_qp_rockchip_dt_ids); +static const u32 supported_colorformats = DRM_COLOR_FORMAT_AUTO | + DRM_COLOR_FORMAT_RGB444 | + DRM_COLOR_FORMAT_YCBCR444; + +static unsigned int __pure drm_to_hdmi_fmts(const u32 fmt) +{ + unsigned int res = 0; + + if (fmt & DRM_COLOR_FORMAT_AUTO) + res |= BIT(HDMI_COLORSPACE_RGB); + if (fmt & DRM_COLOR_FORMAT_RGB444) + res |= BIT(HDMI_COLORSPACE_RGB); + if (fmt & DRM_COLOR_FORMAT_YCBCR444) + res |= BIT(HDMI_COLORSPACE_YUV444); + if (fmt & DRM_COLOR_FORMAT_YCBCR422) + res |= BIT(HDMI_COLORSPACE_YUV422); + if (fmt & DRM_COLOR_FORMAT_YCBCR420) + res |= BIT(HDMI_COLORSPACE_YUV420); + + return res; +} + static int dw_hdmi_qp_rockchip_bind(struct device *dev, struct device *master, void *data) { @@ -521,6 +543,8 @@ static int dw_hdmi_qp_rockchip_bind(struct device *dev, struct device *master, plat_data.phy_data = hdmi; plat_data.max_bpc = 10; + plat_data.supported_formats = drm_to_hdmi_fmts(supported_colorformats); + encoder = &hdmi->encoder.encoder; encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node); -- 2.51.2
