Implement Read back of HDR metadata infoframes i.e Dynamic Range
and Mastering Infoframe for LSPCON devices.
Signed-off-by: Uma Shankar <uma.shankar@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_hdmi.c | 10 ++++++++++
drivers/gpu/drm/i915/display/intel_lspcon.c | 6 +++++-
drivers/gpu/drm/i915/display/intel_lspcon.h | 4 ++++
3 files changed, 19 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 53103ef72a58..786378442dd2 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -600,6 +600,16 @@ void lspcon_drm_write_infoframe(struct intel_encoder *encoder,
hsw_write_infoframe(encoder, crtc_state, type, frame, len);
}
+void lspcon_drm_read_infoframe(struct intel_encoder *encoder,
+ const struct intel_crtc_state *crtc_state,
+ unsigned int type,
+ void *frame, ssize_t len)
+{
+ drm_dbg_kms(encoder->base.dev, "Read HDR metadata for lspcon\n");
+ /* It uses the legacy hsw implementation for the same */
+ hsw_read_infoframe(encoder, crtc_state, type, frame, len);
+}
+
static const u8 infoframe_type_to_idx[] = {
HDMI_PACKET_TYPE_GENERAL_CONTROL,
HDMI_PACKET_TYPE_GAMUT_METADATA,
diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.c b/drivers/gpu/drm/i915/display/intel_lspcon.c
index 0ebe9a700291..8d1bd2da1e73 100644
--- a/drivers/gpu/drm/i915/display/intel_lspcon.c
+++ b/drivers/gpu/drm/i915/display/intel_lspcon.c
@@ -501,7 +501,11 @@ void lspcon_read_infoframe(struct intel_encoder *encoder,
unsigned int type,
void *frame, ssize_t len)
{
- /* FIXME implement this */
+ /* FIXME implement for AVI Infoframe as well */
+ if (type == HDMI_PACKET_TYPE_GAMUT_METADATA)
+ lspcon_drm_read_infoframe(encoder, crtc_state,
+ HDMI_PACKET_TYPE_GAMUT_METADATA,
+ frame, VIDEO_DIP_DATA_SIZE);
}
/* HDMI HDR Colorspace Spec Definitions */
diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.h b/drivers/gpu/drm/i915/display/intel_lspcon.h
index b2051f236223..68d2d835bd86 100644
--- a/drivers/gpu/drm/i915/display/intel_lspcon.h
+++ b/drivers/gpu/drm/i915/display/intel_lspcon.h
@@ -38,4 +38,8 @@ void lspcon_drm_write_infoframe(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state,
unsigned int type,
const void *frame, ssize_t len);
+void lspcon_drm_read_infoframe(struct intel_encoder *encoder,
+ const struct intel_crtc_state *crtc_state,
+ unsigned int type,
+ void *frame, ssize_t len);
#endif /* __INTEL_LSPCON_H__ */
--
2.22.0
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