Re: [PATCH 04/10] drm/i915/vrr: Compute vrr vsync if platforms support it

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On 7/16/2024 9:36 AM, Golani, Mitulkumar Ajitkumar wrote:

-----Original Message-----
From: Nautiyal, Ankit K <ankit.k.nautiyal@xxxxxxxxx>
Sent: Tuesday, July 9, 2024 8:57 AM
To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
Cc: jani.nikula@xxxxxxxxxxxxxxx; ville.syrjala@xxxxxxxxxxxxxxx; Golani,
Mitulkumar Ajitkumar <mitulkumar.ajitkumar.golani@xxxxxxxxx>
Subject: [PATCH 04/10] drm/i915/vrr: Compute vrr vsync if platforms support it

Previously, TRANS_VRR_VSYNC was exclusively used for panels with adaptive-
sync SDP support in VRR scenarios. However, to drive fixed refresh rates using
the VRR Timing generator, we now need to program TRANS_VRR_VSYNC
regardless of adaptive sync SDP support. Therefore, let's remove the adaptive
In this case still do we need to add source check for HAS_AS_SDP(i915) ?

We still need to ensure that we do not write this for platforms where it is not supported.

I have added the check, as this was introduced for AS SDP originally for DISPLAY >= 13

Regards,

Ankit


Regards,
Mitul

sync SDP check and program TRANS_VRR_VSYNC for platforms where VRR
timing generator is used.

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@xxxxxxxxx>
---
  drivers/gpu/drm/i915/display/intel_vrr.c | 3 +--
  1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c
b/drivers/gpu/drm/i915/display/intel_vrr.c
index 24568dae717a..43b772f91556 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.c
+++ b/drivers/gpu/drm/i915/display/intel_vrr.c
@@ -233,8 +233,7 @@ intel_vrr_compute_config(struct intel_crtc_state
*crtc_state,
  		crtc_state->mode_flags |= I915_MODE_FLAG_VRR;
  	}

-	if (intel_dp_as_sdp_supported(intel_dp) &&
-	    crtc_state->vrr.enable) {
+	if (HAS_AS_SDP(i915) && crtc_state->vrr.enable) {
  		crtc_state->vrr.vsync_start =
  			(crtc_state->hw.adjusted_mode.crtc_vtotal -
  			 crtc_state->hw.adjusted_mode.vsync_start);
--
2.40.1



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