diff mbox series

[v6,2/2] drm/i915: Attach colorspace property and enable modeset

Message ID 1545933158-22396-3-git-send-email-uma.shankar@intel.com (mailing list archive)
State New, archived
Headers show
Series Add Colorspace connector property interface | expand

Commit Message

Shankar, Uma Dec. 27, 2018, 5:52 p.m. UTC 
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.

This patch attaches and enables HDMI colorspace, DP will be
taken care separately.

v2: Merged the changes of creating infoframe as well to this
patch as per Maarten's suggestion.

v3: Addressed review comments from Shashank. Separated HDMI
and DP colorspaces as suggested by Ville and Maarten.

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. Handle the default case properly.

v5: Added Platform specific colorspace enums and called the
property creation helper using the same.

v6: Addressed Shashank's review comments.

Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Reviewed-by: Shashank Sharma <shashank.sharma@intel.com>
---
 drivers/gpu/drm/i915/intel_atomic.c    |  1 +
 drivers/gpu/drm/i915/intel_connector.c | 63 ++++++++++++++++++++++++++++++++++
 drivers/gpu/drm/i915/intel_drv.h       |  1 +
 drivers/gpu/drm/i915/intel_hdmi.c      | 19 ++++++++++
 4 files changed, 84 insertions(+)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/intel_atomic.c b/drivers/gpu/drm/i915/intel_atomic.c
index fdfc742..f5bf9db 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_connector.c b/drivers/gpu/drm/i915/intel_connector.c
index 18e370f..7228d1b 100644
--- a/drivers/gpu/drm/i915/intel_connector.c
+++ b/drivers/gpu/drm/i915/intel_connector.c
@@ -31,6 +31,48 @@ 
 #include "intel_drv.h"
 #include "i915_drv.h"
 
+static const struct drm_prop_enum_list gen10_hdmi_colorspaces[] = {
+	/* 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 61966-2-1/Amendment 1 */
+	{ COLORIMETRY_S_YCC_601, "S_YCC_601" },
+	/* Colorimetry based on IEC 61966-2-5 [33] */
+	{ COLORIMETRY_OPYCC_601, "opYCC_601" },
+	/* Colorimetry based on IEC 61966-2-5 */
+	{ COLORIMETRY_OPRGB, "opRGB" },
+	/* Colorimetry based on ITU-R BT.2020 */
+	{ COLORIMETRY_BT2020_RGB, "BT2020_RGB" },
+	/* Colorimetry based on ITU-R BT.2020 */
+	{ COLORIMETRY_BT2020_YCC, "BT2020_YCC" },
+	/* Colorimetry based on ITU-R BT.2020 */
+	{ COLORIMETRY_BT2020_CYCC, "BT2020_CYCC" },
+};
+
+static const struct drm_prop_enum_list legacy_hdmi_colorspaces[] = {
+	/* 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 61966-2-1/Amendment 1 */
+	{ COLORIMETRY_S_YCC_601, "S_YCC_601" },
+	/* Colorimetry based on IEC 61966-2-5 [33] */
+	{ COLORIMETRY_OPYCC_601, "opYCC_601" },
+	/* Colorimetry based on IEC 61966-2-5 */
+	{ COLORIMETRY_OPRGB, "opRGB" },
+};
+
 int intel_connector_init(struct intel_connector *connector)
 {
 	struct intel_digital_connector_state *conn_state;
@@ -262,3 +304,24 @@  int intel_ddc_get_modes(struct drm_connector *connector,
 			connector->dev->mode_config.aspect_ratio_property,
 			DRM_MODE_PICTURE_ASPECT_NONE);
 }
+
+void
+intel_attach_colorspace_property(struct drm_connector *connector)
+{
+	struct drm_device *dev = connector->dev;
+	struct drm_i915_private *dev_priv = to_i915(dev);
+
+	if (INTEL_GEN(dev_priv) >= 10) {
+		if (!drm_mode_create_colorspace_property(connector,
+			gen10_hdmi_colorspaces,
+			ARRAY_SIZE(gen10_hdmi_colorspaces)))
+			drm_object_attach_property(&connector->base,
+				connector->colorspace_property, 0);
+	} else {
+		if (!drm_mode_create_colorspace_property(connector,
+			legacy_hdmi_colorspaces,
+			ARRAY_SIZE(legacy_hdmi_colorspaces)))
+			drm_object_attach_property(&connector->base,
+				connector->colorspace_property, 0);
+	}
+}
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 1a11c2be..41fcceb 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1782,6 +1782,7 @@  int intel_connector_update_modes(struct drm_connector *connector,
 void intel_attach_force_audio_property(struct drm_connector *connector);
 void intel_attach_broadcast_rgb_property(struct drm_connector *connector);
 void intel_attach_aspect_ratio_property(struct drm_connector *connector);
+void intel_attach_colorspace_property(struct drm_connector *connector);
 
 /* intel_csr.c */
 void intel_csr_ucode_init(struct drm_i915_private *);
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 07e803a..a969b4d 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -503,6 +503,24 @@  static void intel_hdmi_set_avi_infoframe(struct intel_encoder *encoder,
 	else
 		frame.avi.colorspace = HDMI_COLORSPACE_RGB;
 
+	if (conn_state->colorspace == COLORIMETRY_DEFAULT) {
+		/* Set ITU 709 as default for HDMI */
+		frame.avi.colorimetry = COLORIMETRY_ITU_709;
+	} else if (conn_state->colorspace < COLORIMETRY_XV_YCC_601) {
+		frame.avi.colorimetry = conn_state->colorspace;
+	} else {
+		frame.avi.colorimetry = HDMI_COLORIMETRY_EXTENDED;
+		/*
+		 * Starting from extended list where COLORIMETRY_XV_YCC_601
+		 * is the first extended mode and its value is 0 as per HDMI
+		 * specification.
+		 * TODO: This needs to be extended for LSPCON implementation
+		 * as well. Will be implemented separately.
+		 */
+		frame.avi.extended_colorimetry = conn_state->colorspace -
+							COLORIMETRY_XV_YCC_601;
+	}
+
 	drm_hdmi_avi_infoframe_quant_range(&frame.avi, adjusted_mode,
 					   crtc_state->limited_color_range ?
 					   HDMI_QUANTIZATION_RANGE_LIMITED :
@@ -2152,6 +2170,7 @@  static void intel_hdmi_destroy(struct drm_connector *connector)
 	intel_attach_force_audio_property(connector);
 	intel_attach_broadcast_rgb_property(connector);
 	intel_attach_aspect_ratio_property(connector);
+	intel_attach_colorspace_property(connector);
 	drm_connector_attach_content_type_property(connector);
 	connector->state->picture_aspect_ratio = HDMI_PICTURE_ASPECT_NONE;