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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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drm/i915/display: Wait for VRR PUSH status update

After VRR Push is sent, need to wait till flipline decision boundary
to get Push bit to get cleared.

--v2:
- Adjust delays to vrr vmin vblank delays. (Ankit)

--v3:
- Change intel_vrr_vmin_safe_window_end() so that
intel_dsb_wait_for_delayed_vblank() uses correct delay. (Ankit)

--v4:
- Simplify intel_vrr_vmin_safe_window_end implementation. (Ankit)

Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://patch.msgid.link/20251223104542.2688548-15-mitulkumar.ajitkumar.golani@intel.com

authored by

Mitul Golani and committed by
Ankit Nautiyal c4aba65c 5bb6250c

+13 -2
+13 -2
drivers/gpu/drm/i915/display/intel_vrr.c
··· 1095 1095 return crtc_state->hw.adjusted_mode.crtc_vdisplay; 1096 1096 } 1097 1097 1098 + static int 1099 + intel_vrr_dcb_vmin_vblank_start(const struct intel_crtc_state *crtc_state) 1100 + { 1101 + return (intel_vrr_dcb_vmin_vblank_start_next(crtc_state) < 0) ? 1102 + intel_vrr_dcb_vmin_vblank_start_final(crtc_state) : 1103 + intel_vrr_dcb_vmin_vblank_start_next(crtc_state); 1104 + } 1105 + 1098 1106 int intel_vrr_vmin_safe_window_end(const struct intel_crtc_state *crtc_state) 1099 1107 { 1100 - return intel_vrr_vmin_vblank_start(crtc_state) - 1101 - crtc_state->set_context_latency; 1108 + int vmin_vblank_start = crtc_state->vrr.dc_balance.enable ? 1109 + intel_vrr_dcb_vmin_vblank_start(crtc_state) : 1110 + intel_vrr_vmin_vblank_start(crtc_state); 1111 + 1112 + return vmin_vblank_start - crtc_state->set_context_latency; 1102 1113 } 1103 1114 1104 1115 int intel_vrr_dcb_vmin_vblank_start_next(const struct intel_crtc_state *crtc_state)