|
Regards Shashank On 10/31/2018 5:35 PM, Uma Shankar
wrote:
We must also set the date byte 2 bits C1-C0 (colorimetry part) to indicate the use of extended colorimetry bits, so that monitor will refer to extended colorimetry data, else it wont even bother looking at it:This patch attaches the colorspace connector property to the hdmi connector. Based on colorspace change, modeset will be triggered to switch to new colorspace. Based on colorspace property value create an infoframe with appropriate colorspace. This can be used to send an infoframe packet with proper colorspace value set which will help to enable wider color gamut like BT2020 on sink. v2: Merged the changes of creating infoframe as well to this patch as per Maarten's suggestion. Signed-off-by: Uma Shankar <uma.shankar@xxxxxxxxx> --- drivers/gpu/drm/i915/intel_atomic.c | 1 + drivers/gpu/drm/i915/intel_hdmi.c | 5 +++++ 2 files changed, 6 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_atomic.c b/drivers/gpu/drm/i915/intel_atomic.c index a5a2c8f..35ef70a 100644 --- a/drivers/gpu/drm/i915/intel_atomic.c +++ b/drivers/gpu/drm/i915/intel_atomic.c @@ -125,6 +125,7 @@ int intel_digital_connector_atomic_check(struct drm_connector *conn, */ if (new_conn_state->force_audio != old_conn_state->force_audio || new_conn_state->broadcast_rgb != old_conn_state->broadcast_rgb || + new_state->colorspace != old_state->colorspace || new_conn_state->base.picture_aspect_ratio != old_conn_state->base.picture_aspect_ratio || new_conn_state->base.content_type != old_conn_state->base.content_type || new_conn_state->base.scaling_mode != old_conn_state->base.scaling_mode) diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c index 129b880..8a41fb3 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -486,6 +486,8 @@ static void intel_hdmi_set_avi_infoframe(struct intel_encoder *encoder, else frame.avi.colorspace = HDMI_COLORSPACE_RGB; + frame.avi.extended_colorimetry = conn_state->colorspace; +
Its right now set to dafault 0-0 I guess, indicating No data We should also set it to a default value now, when we have started bothering about gamut. Regards Shashank drm_hdmi_avi_infoframe_quant_range(&frame.avi, adjusted_mode, crtc_state->limited_color_range ? HDMI_QUANTIZATION_RANGE_LIMITED : @@ -2125,6 +2127,9 @@ static void intel_hdmi_destroy(struct drm_connector *connector) intel_attach_broadcast_rgb_property(connector); intel_attach_aspect_ratio_property(connector); drm_connector_attach_content_type_property(connector); + drm_object_attach_property(&connector->base, + connector->dev->mode_config.colorspace_property, + COLORIMETRY_ITU_709); connector->state->picture_aspect_ratio = HDMI_PICTURE_ASPECT_NONE; } |
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