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drm/i915/cmtg: Add a hook to make eDP transcoder secondary

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Program DDI_FUNC_CTL2 to configure the eDP transcoder as secondary
to the CMTG transcoder.

v2:
- Update commit header to be more clear. [Uma]

Bspec: 68915
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Reviewed-by: Dibin Moolakadan Subrahmanian <dibin.moolakadan.subrahmanian@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patch.msgid.link/20260615200339.885190-17-animesh.manna@intel.com
This commit is contained in:
Animesh Manna 2026-06-16 01:33:33 +05:30
parent b6261ac5d5
commit 3c6b291c29
3 changed files with 19 additions and 0 deletions
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14
drivers/gpu/drm/i915/display/intel_cmtg.c
View File

@ -310,3 +310,17 @@ void intel_cmtg_enable_sync(const struct intel_crtc_state *crtc_state)
transcoder_name(cpu_transcoder));
}
}
void intel_cmtg_enable_ddi(const struct intel_crtc_state *crtc_state)
{
struct intel_display *display = to_intel_display(crtc_state);
struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
if (!intel_cmtg_is_allowed(crtc_state))
return;
intel_de_rmw(display, TRANS_DDI_FUNC_CTL2(display, cpu_transcoder), 0, CMTG_SECONDARY_MODE);
crtc->cmtg.enabled = true;
drm_dbg_kms(display->drm, "CMTG: %s enabled\n", transcoder_name(cpu_transcoder));
}

1
drivers/gpu/drm/i915/display/intel_cmtg.h
View File

@ -16,6 +16,7 @@ enum set_timing_type {
LRR
};
void intel_cmtg_enable_ddi(const struct intel_crtc_state *crtc_state);
void intel_cmtg_enable_sync(const struct intel_crtc_state *crtc_state);
void intel_cmtg_set_m_n(const struct intel_crtc_state *crtc_state);
void intel_cmtg_set_vrr_timings(const struct intel_crtc_state *crtc_state);

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

@ -1574,6 +1574,10 @@ struct intel_crtc {
#endif
bool vblank_psr_notify;
struct {
bool enabled;
} cmtg;
};
struct intel_plane_error {