[v4 2/3] drm: Add DP colorspace property

[Sharma, Shashank]

Regards

Shashank


On 11/27/2018 10:10 PM, Uma Shankar wrote:
> This patch adds a DP colorspace property, enabling
> userspace to switch to various supported colorspaces.
> This will help enable BT2020 along with other colorspaces.
>
> v2: Addressed Maarten and Ville's review comments. Enhanced
>      the colorspace enum to incorporate both HDMI and DP supported
>      colorspaces. Also, added a default option for colorspace.
>
> v3: Split the changes to have separate colorspace property for
> DP and HDMI.
>
> v4: Addressed Chris and Ville's review comments, and created a
> common colorspace property for DP and HDMI, filtered the list
> based on the colorspaces supported by the respective protocol
> standard.
>
> Signed-off-by: Uma Shankar <uma.shankar at intel.com>
> ---
>   drivers/gpu/drm/drm_connector.c | 31 +++++++++++++++++++++++++++++++
>   1 file changed, 31 insertions(+)
>
> diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
> index 57d36e4..30e2e6f 100644
> --- a/drivers/gpu/drm/drm_connector.c
> +++ b/drivers/gpu/drm/drm_connector.c
> @@ -850,6 +850,29 @@ int drm_display_info_set_bus_formats(struct drm_display_info *info,
>   	{ COLORIMETRY_BT2020_CYCC, "BT2020_CYCC" },
>   };
>   
> +static const struct drm_prop_enum_list dp_colorspace[] = {
> +	/* For Default case, driver will set the colorspace */
> +	{ COLORIMETRY_DEFAULT, "Default" },
> +	/* Standard Definition Colorimetry based on CEA 861 */
> +	{ COLORIMETRY_ITU_601, "ITU_601" },
> +	{ COLORIMETRY_ITU_709, "ITU_709" },
> +	/* Standard Definition Colorimetry based on IEC 61966-2-4 */
> +	{ COLORIMETRY_XV_YCC_601, "XV_YCC_601" },
> +	/* High Definition Colorimetry based on IEC 61966-2-4 */
> +	{ COLORIMETRY_XV_YCC_709, "XV_YCC_709" },
> +	/* Colorimetry based on IEC 61966-2-5 */
> +	{ COLORIMETRY_OPRGB, "opRGB" },
> +	/* DP MSA Colorimetry */
> +	{ DP_COLORIMETRY_Y_CBCR_ITU_601, "YCBCR_ITU_601" },
> +	{ DP_COLORIMETRY_Y_CBCR_ITU_709, "YCBCR_ITU_709" },
> +	{ DP_COLORIMETRY_SRGB, "sRGB" },
> +	{ DP_COLORIMETRY_RGB_WIDE_GAMUT, "RGB Wide Gamut" },
> +	{ DP_COLORIMETRY_SCRGB, "scRGB" },
> +	{ DP_COLORIMETRY_DCI_P3, "DCI-P3" },
> +	{ DP_COLORIMETRY_CUSTOM_COLOR_PROFILE, "Custom Profile" },
> +};
> +
> +
The same comments as previous patch, possibility of the platform specfic 
enum values being passed from the core driver. and DRM layer blindly 
registers it.
- Shashank
>   /**
>    * DOC: standard connector properties
>    *
> @@ -1454,6 +1477,14 @@ int drm_mode_create_colorspace_property(struct drm_connector *connector)
>   						ARRAY_SIZE(hdmi_colorspace));
>   		if (!prop)
>   			return -ENOMEM;
> +	} else if (connector->connector_type == DRM_MODE_CONNECTOR_eDP ||
> +		connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) {
> +
> +		prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM,
> +						"Colorspace", dp_colorspace,
> +						ARRAY_SIZE(dp_colorspace));
> +		if (!prop)
> +			return -ENOMEM;
>   	}
>   
>   	connector->colorspace_property = prop;