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.
v4: Added separate HDMI specific macro as per CTA spec.
This is separate from user exposed enum values. This is
as per Ville's suggestion.
Signed-off-by: Uma Shankar <uma.shankar@xxxxxxxxx>
---
drivers/gpu/drm/drm_edid.c | 57 +++++++++++++++++++++++++++++++++++++++++++++
include/drm/drm_connector.h | 20 ++++++++++++++++
include/drm/drm_edid.h | 6 +++++
3 files changed, 83 insertions(+)
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 990b190..7062e37 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -4925,6 +4925,63 @@ 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)
+{
+ u32 colorimetry_val = conn_state->colorspace &
+ FULL_COLORIMETRY_MASK;
+
+ switch (colorimetry_val) {
+ case DRM_MODE_COLORIMETRY_NO_DATA:
+ colorimetry_val = HDMI_COLORIMETRY_NO_DATA;
+ break;
+ case HDMI_COLORIMETRY_SMPTE_170M:
+ colorimetry_val = HDMI_COLORIMETRY_SMPTE_170M;
+ break;
+ case DRM_MODE_COLORIMETRY_BT709:
+ colorimetry_val = HDMI_COLORIMETRY_BT709;
+ break;
+ case DRM_MODE_COLORIMETRY_XVYCC_601:
+ colorimetry_val = HDMI_COLORIMETRY_XVYCC_601;
+ break;
+ case DRM_MODE_COLORIMETRY_XVYCC_709:
+ colorimetry_val = HDMI_COLORIMETRY_XVYCC_709;
+ break;
+ case DRM_MODE_COLORIMETRY_SYCC_601:
+ colorimetry_val = HDMI_COLORIMETRY_SYCC_601;
+ break;
+ case DRM_MODE_COLORIMETRY_OPYCC_601:
+ colorimetry_val = HDMI_COLORIMETRY_OPYCC_601;
+ break;
+ case DRM_MODE_COLORIMETRY_OPRGB:
+ colorimetry_val = HDMI_COLORIMETRY_OPRGB;
+ break;
+ case DRM_MODE_COLORIMETRY_BT2020_RGB:
+ case DRM_MODE_COLORIMETRY_BT2020_YCC:
+ colorimetry_val = HDMI_COLORIMETRY_BT2020_RGB;
+ break;
+ case DRM_MODE_COLORIMETRY_BT2020_CYCC:
+ colorimetry_val = HDMI_COLORIMETRY_BT2020_CYCC;
+ break;
+ default:
+ /* ToDo: DCI-P3 will be handled as part of ACE enabling */
+ colorimetry_val = HDMI_COLORIMETRY_NO_DATA;
+ break;
+ }
+
+ frame->colorimetry = colorimetry_val & NORMAL_COLORIMETRY_MASK;
+ frame->extended_colorimetry = (colorimetry_val >> 2) &
+ EXTENDED_COLORIMETRY_MASK;
+}
+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_connector.h b/include/drm/drm_connector.h
index 37d4dda..7b8062c 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -288,6 +288,26 @@ enum drm_panel_orientation {
#define DRM_MODE_DP_COLORIMETRY_RGB_WIDE_GAMUT 16
#define DRM_MODE_DP_COLORIMETRY_SCRGB 17
+/* HDMI Colorspace Spec Definitions */
+#define FULL_COLORIMETRY_MASK 0x1FF
+#define NORMAL_COLORIMETRY_MASK 0x3
+#define EXTENDED_COLORIMETRY_MASK 0x7
+#define EXTENDED_ACE_COLORIMETRY_MASK 0xF
+
+#define HDMI_COLORIMETRY_NO_DATA 0x0
+#define HDMI_COLORIMETRY_SMPTE_170M 0x1
+#define HDMI_COLORIMETRY_BT709 0x2
+#define HDMI_COLORIMETRY_XVYCC_601 0x3
+#define HDMI_COLORIMETRY_XVYCC_709 0x7
+#define HDMI_COLORIMETRY_SYCC_601 0xB
+#define HDMI_COLORIMETRY_OPYCC_601 0xF
+#define HDMI_COLORIMETRY_OPRGB 0x13
+#define HDMI_COLORIMETRY_BT2020_CYCC 0x17
+#define HDMI_COLORIMETRY_BT2020_RGB 0x1C
+#define HDMI_COLORIMETRY_BT2020_YCC 0x1C
+#define HDMI_COLORIMETRY_DCI_P3_RGB_D65 0x1F
+#define HDMI_COLORIMETRY_DCI_P3_RGB_THEATER 0x3F
+
/**
* struct drm_display_info - runtime data about the connected sink
*
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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