As per bspec the LOBF is allowed when running in fixed refresh rate mode i.e. when flipline = vmin = vmax. Apparently this means we can allow LOBF only when VRR timing generator is running in fixed refresh rate mode.
Use the check intel_vrr_always_use_vrr_tg() to avoid LOBF with legacy timing generator. Also use intel_vrr_is_fixed_rr() to check for fixed refresh rate mode. Signed-off-by: Ankit Nautiyal <[email protected]> --- drivers/gpu/drm/i915/display/intel_alpm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_alpm.c b/drivers/gpu/drm/i915/display/intel_alpm.c index 686e4d13f864..5cfb9345776a 100644 --- a/drivers/gpu/drm/i915/display/intel_alpm.c +++ b/drivers/gpu/drm/i915/display/intel_alpm.c @@ -344,8 +344,8 @@ 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) + if (!intel_vrr_always_use_vrr_tg(display) || + !intel_vrr_is_fixed_rr(crtc_state)) return; if (!(intel_alpm_aux_wake_supported(intel_dp) || -- 2.45.2
