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drm/i915/display: Wait for VRR PUSH status update

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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
This commit is contained in:
Mitul Golani
2025-12-23 16:15:36 +05:30
committed by Ankit Nautiyal
parent 5bb6250c34
commit c4aba65c26
1 changed files with 13 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
drivers/gpu/drm/i915/display/intel_vrr.c
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@@ -1095,10 +1095,21 @@ int intel_vrr_safe_window_start(const struct intel_crtc_state *crtc_state)
return crtc_state->hw.adjusted_mode.crtc_vdisplay;
}
static int
intel_vrr_dcb_vmin_vblank_start(const struct intel_crtc_state *crtc_state)
{
return (intel_vrr_dcb_vmin_vblank_start_next(crtc_state) < 0) ?
intel_vrr_dcb_vmin_vblank_start_final(crtc_state) :
intel_vrr_dcb_vmin_vblank_start_next(crtc_state);
}
int intel_vrr_vmin_safe_window_end(const struct intel_crtc_state *crtc_state)
{
return intel_vrr_vmin_vblank_start(crtc_state) -
crtc_state->set_context_latency;
int vmin_vblank_start = crtc_state->vrr.dc_balance.enable ?
intel_vrr_dcb_vmin_vblank_start(crtc_state) :
intel_vrr_vmin_vblank_start(crtc_state);
return vmin_vblank_start - crtc_state->set_context_latency;
}
int intel_vrr_dcb_vmin_vblank_start_next(const struct intel_crtc_state *crtc_state)