Implement Read back of HDR metadata infoframes i.e Dynamic Range
and Mastering Infoframe for LSPCON devices.
v2: Added proper bitmask of enabled infoframes as per Ville's
recommendation.
v3: Dropped a redundant wrapper as per Ville's comment.
Signed-off-by: Uma Shankar <uma.shankar@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_hdmi.c | 7 +++----
drivers/gpu/drm/i915/display/intel_lspcon.c | 7 ++++++-
drivers/gpu/drm/i915/display/intel_lspcon.h | 4 ++++
3 files changed, 13 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index f1a927cdf798..81dabffbb3e6 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -555,10 +555,9 @@ void hsw_write_infoframe(struct intel_encoder *encoder,
intel_de_posting_read(dev_priv, ctl_reg);
}
-static void hsw_read_infoframe(struct intel_encoder *encoder,
- const struct intel_crtc_state *crtc_state,
- unsigned int type,
- void *frame, ssize_t len)
+void hsw_read_infoframe(struct intel_encoder *encoder,
+ const struct intel_crtc_state *crtc_state,
+ unsigned int type, void *frame, ssize_t len)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.c b/drivers/gpu/drm/i915/display/intel_lspcon.c
index d83e1d220658..8a4fd8ca8016 100644
--- a/drivers/gpu/drm/i915/display/intel_lspcon.c
+++ b/drivers/gpu/drm/i915/display/intel_lspcon.c
@@ -486,7 +486,12 @@ 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) {
+ drm_dbg_kms(encoder->base.dev, "Read HDR metadata for lspcon\n");
+ hsw_read_infoframe(encoder, crtc_state, type,
+ frame, len);
+ }
}
void lspcon_set_infoframes(struct intel_encoder *encoder,
diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.h b/drivers/gpu/drm/i915/display/intel_lspcon.h
index 42ccb21c908f..d622156d0c4e 100644
--- a/drivers/gpu/drm/i915/display/intel_lspcon.h
+++ b/drivers/gpu/drm/i915/display/intel_lspcon.h
@@ -37,5 +37,9 @@ void hsw_write_infoframe(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state,
unsigned int type,
const void *frame, ssize_t len);
+void hsw_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__ */
--
2.26.2
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