[PATCH v4 3/8] drm/i915/lobf: Add fixed refresh rate check in compute_config()

[Animesh Manna <animesh.manna@intel.com>]

LOBF can be enabled with vrr fixed rate mode, so add check
if vmin = vmax = flipline in compute_config().

Signed-off-by: Animesh Manna <animesh.manna@intel.com>
---
 drivers/gpu/drm/i915/display/intel_alpm.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_alpm.c b/drivers/gpu/drm/i915/display/intel_alpm.c
index d94c96ba46b1..1438e125cde1 100644
--- a/drivers/gpu/drm/i915/display/intel_alpm.c
+++ b/drivers/gpu/drm/i915/display/intel_alpm.c
@@ -288,6 +288,10 @@ void intel_alpm_lobf_compute_config(struct intel_dp *intel_dp,
 	if (crtc_state->has_psr)
 		return;
 
+	if (!(crtc_state->vrr.vmin == crtc_state->vrr.vmax &&
+	      crtc_state->vrr.vmin == crtc_state->vrr.flipline))
+		return;
+
 	if (!(intel_alpm_aux_wake_supported(intel_dp) ||
 	      intel_alpm_aux_less_wake_supported(intel_dp)))
 		return;
-- 
2.29.0