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drm/i915/display: Implement DRM infoframe read for LSPCON

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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.

v4: Dropped a redundant print, added Ville's RB.

Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201130204738.2443-14-uma.shankar@intel.com
This commit is contained in:
Uma Shankar 2020-12-01 02:17:36 +05:30
parent 34108a03e4
commit b759415020
3 changed files with 11 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/gpu/drm/i915/display/intel_hdmi.c
View File

@ -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;

5
drivers/gpu/drm/i915/display/intel_lspcon.c
View File

@ -484,7 +484,10 @@ 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)
hsw_read_infoframe(encoder, crtc_state, type,
frame, len);
}
void lspcon_set_infoframes(struct intel_encoder *encoder,

4
drivers/gpu/drm/i915/display/intel_lspcon.h
View File

@ -39,5 +39,9 @@ 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__ */