This adds colorspace information to HDMI AVI infoframe.
A helper function is added to program the same.
v2: Moved this to drm core instead of i915 driver.
v3: Exported the helper function.
Signed-off-by: Uma Shankar <uma.shankar@xxxxxxxxx>
---
drivers/gpu/drm/drm_connector.c | 2 +-
drivers/gpu/drm/drm_edid.c | 29 +++++++++++++++++++++++++++++
include/drm/drm_edid.h | 6 ++++++
3 files changed, 36 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index 4f73591..b19e867 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -862,7 +862,7 @@ int drm_display_info_set_bus_formats(struct drm_display_info *info,
{ DRM_MODE_COLORIMETRY_XVYCC_709, "XVYCC_709" },
/* Colorimetry based on IEC 61966-2-5 */
{ DRM_MODE_COLORIMETRY_OPRGB, "opRGB" },
- { DRM_MODE_COLORIMETRY_DCI_P3, "DCI-P3" },
+ { DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65, "DCI-P3_RGB_D65" },
/* DP MSA Colorimetry */
{ DRM_MODE_DP_COLORIMETRY_YCBCR_ITU_601, "YCBCR_ITU_601" },
{ DRM_MODE_DP_COLORIMETRY_YCBCR_ITU_709, "YCBCR_ITU_709" },
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 990b190..6ef9f4c 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -4925,6 +4925,35 @@ static bool is_hdmi2_sink(struct drm_connector *connector)
EXPORT_SYMBOL(drm_hdmi_avi_infoframe_from_display_mode);
/**
+ * drm_hdmi_avi_infoframe_colorspace() - fill the HDMI AVI infoframe
+ * colorspace information
+ * @frame: HDMI AVI infoframe
+ * @conn_state: connector state
+ */
+void
+drm_hdmi_avi_infoframe_colorspace(struct hdmi_avi_infoframe *frame,
+ const struct drm_connector_state *conn_state)
+{
+ if (conn_state->colorspace == DRM_MODE_COLORIMETRY_DEFAULT) {
+ /* Set No Data as default for HDMI */
+ frame->colorimetry = DRM_MODE_COLORIMETRY_NO_DATA;
+ } else if (conn_state->colorspace < DRM_MODE_COLORIMETRY_XVYCC_601) {
+ frame->colorimetry = conn_state->colorspace;
+ } else {
+ frame->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: Extend to support ACE formats defined in CTA 861.G
+ */
+ frame->extended_colorimetry = conn_state->colorspace -
+ DRM_MODE_COLORIMETRY_XVYCC_601;
+ }
+}
+EXPORT_SYMBOL(drm_hdmi_avi_infoframe_colorspace);
+
+/**
* drm_hdmi_avi_infoframe_quant_range() - fill the HDMI AVI infoframe
* quantization range information
* @frame: HDMI AVI infoframe
diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h
index 8dc1a08..9d3b5b9 100644
--- a/include/drm/drm_edid.h
+++ b/include/drm/drm_edid.h
@@ -331,6 +331,7 @@ struct cea_sad {
struct drm_encoder;
struct drm_connector;
+struct drm_connector_state;
struct drm_display_mode;
int drm_edid_to_sad(struct edid *edid, struct cea_sad **sads);
@@ -358,6 +359,11 @@ int drm_av_sync_delay(struct drm_connector *connector,
drm_hdmi_vendor_infoframe_from_display_mode(struct hdmi_vendor_infoframe *frame,
struct drm_connector *connector,
const struct drm_display_mode *mode);
+
+void
+drm_hdmi_avi_infoframe_colorspace(struct hdmi_avi_infoframe *frame,
+ const struct drm_connector_state *conn_state);
+
void
drm_hdmi_avi_infoframe_quant_range(struct hdmi_avi_infoframe *frame,
struct drm_connector *connector,
--
1.9.1
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