[PATCH 6.6 089/122] drm/i915/vrr: Disable VRR when using bigjoiner

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6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

commit dcd8992e47f13afb5c11a61e8d9c141c35e23751 upstream.

All joined pipes share the same transcoder/timing generator.
Currently we just do the commits per-pipe, which doesn't really
work if we need to change switch between non-VRR and VRR timings
generators on the fly, or even when sending the push to the
transcoder. For now just disable VRR when bigjoiner is needed.

Cc: stable@xxxxxxxxxxxxxxx
Tested-by: Vidya Srinivas <vidya.srinivas@xxxxxxxxx>
Reviewed-by: Vandita Kulkarni <vandita.kulkarni@xxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20240404213441.17637-6-ville.syrjala@xxxxxxxxxxxxxxx
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
(cherry picked from commit f9d5e51db65652dbd8a2102fd7619440e3599fd2)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/i915/display/intel_vrr.c |    7 +++++++
 1 file changed, 7 insertions(+)

--- a/drivers/gpu/drm/i915/display/intel_vrr.c
+++ b/drivers/gpu/drm/i915/display/intel_vrr.c
@@ -111,6 +111,13 @@ intel_vrr_compute_config(struct intel_cr
 	if (!intel_vrr_is_capable(connector))
 		return;
 
+	/*
+	 * FIXME all joined pipes share the same transcoder.
+	 * Need to account for that during VRR toggle/push/etc.
+	 */
+	if (crtc_state->bigjoiner_pipes)
+		return;
+
 	if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE)
 		return;
 






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