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
v8: Added Shashank's RB.
Signed-off-by: Uma Shankar uma.shankar@intel.com Reviewed-by: Shashank Sharma shashank.sharma@intel.com --- 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 a38b9cf..6a9d132 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -1051,6 +1051,7 @@ 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 d9851da..40d55b0 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -566,6 +566,7 @@ 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) @@ -788,6 +789,30 @@ 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, @@ -1186,6 +1211,16 @@ 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) @@ -2392,6 +2427,19 @@ 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 || IS_GEMINILAKE(dev_priv)) { + if (!intel_hdmi_compute_drm_infoframe(encoder, pipe_config, + conn_state)) { + DRM_DEBUG_KMS("bad DRM infoframe\n"); + return -EINVAL; + } + } + return 0; }