Enable writing of HDR metadata infoframe to panel.
The data will be provid by usersapace compositors, based
on blending policies and passsed to driver through a blob
property.
v2: Rebase
v3: Fixed a warning message
v4: Addressed Shashank's review comments
v5: Rebase. Added infoframe calculation in compute config.
v6: Addressed Shashank's review comment. Added HDR metadata
support from GEN10 onwards as per Shashank's recommendation.
v7: Addressed Shashank's review comments
Signed-off-by: Uma Shankar <uma.shankar@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_drv.h | 1 +
drivers/gpu/drm/i915/intel_hdmi.c | 48 +++++++++++++++++++++++++++++++++++++++
2 files changed, 49 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index f8c7b29..53fc608 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1043,6 +1043,7 @@ struct intel_crtc_state {
union hdmi_infoframe avi;
union hdmi_infoframe spd;
union hdmi_infoframe hdmi;
+ union hdmi_infoframe drm;
} infoframes;
/* HDMI scrambling status */
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 88fd952..8c0698a 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -555,6 +555,7 @@ static u32 hsw_infoframes_enabled(struct intel_encoder *encoder,
HDMI_INFOFRAME_TYPE_AVI,
HDMI_INFOFRAME_TYPE_SPD,
HDMI_INFOFRAME_TYPE_VENDOR,
+ HDMI_INFOFRAME_TYPE_DRM,
};
u32 intel_hdmi_infoframe_enable(unsigned int type)
@@ -777,6 +778,30 @@ void intel_read_infoframe(struct intel_encoder *encoder,
return true;
}
+static bool
+intel_hdmi_compute_drm_infoframe(struct intel_encoder *encoder,
+ struct intel_crtc_state *crtc_state,
+ struct drm_connector_state *conn_state)
+{
+ struct hdmi_drm_infoframe *frame = &crtc_state->infoframes.drm.drm;
+ struct hdr_output_metadata *hdr_metadata;
+ int ret;
+
+ hdr_metadata = (struct hdr_output_metadata *)
+ conn_state->hdr_output_metadata_blob_ptr->data;
+
+ ret = drm_hdmi_infoframe_set_hdr_metadata(frame, hdr_metadata);
+ if (ret < 0) {
+ DRM_ERROR("couldn't set HDR metadata in infoframe\n");
+ return false;
+ }
+
+ crtc_state->infoframes.enable |=
+ intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_DRM);
+
+ return true;
+}
+
static void g4x_set_infoframes(struct intel_encoder *encoder,
bool enable,
const struct intel_crtc_state *crtc_state,
@@ -1175,6 +1200,16 @@ static void hsw_set_infoframes(struct intel_encoder *encoder,
intel_write_infoframe(encoder, crtc_state,
HDMI_INFOFRAME_TYPE_VENDOR,
&crtc_state->infoframes.hdmi);
+
+ /*
+ * Support HDR Metadata from Gen10 onwards
+ * ToDo: Gen9 also can support HDR with LSPCON.
+ * Support for the same to be enabled later.
+ */
+ if (INTEL_GEN(dev_priv) >= 10) {
+ intel_write_infoframe(encoder, crtc_state,
+ HDMI_INFOFRAME_TYPE_DRM,
+ &crtc_state->infoframes.drm);
}
void intel_dp_dual_mode_set_tmds_output(struct intel_hdmi *hdmi, bool enable)
@@ -2381,6 +2416,19 @@ int intel_hdmi_compute_config(struct intel_encoder *encoder,
return -EINVAL;
}
+ /*
+ * Support HDR Metadata from Gen10 onwards
+ * ToDo: Gen9 also can support HDR with LSPCON.
+ * Support for the same to be enabled later.
+ */
+ if (INTEL_GEN(dev_priv) >= 10) {
+ if (!intel_hdmi_compute_drm_infoframe(encoder, pipe_config,
+ conn_state)) {
+ DRM_DEBUG_KMS("bad DRM infoframe\n");
+ return -EINVAL;
+ }
+ }
+
return 0;
}
--
1.9.1
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