From aeafa46ee30c95dbad77db19b1400fb6fd78245f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Jouni=20H=C3=B6gander?= Date: Fri, 7 Jun 2024 16:49:15 +0300 Subject: [PATCH] drm/i915/psr: Take into account SU SDP scanline indication in vblank check MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit SU SDP scanline indication should be taken into account when checking vblank length. In Bspec we have: PSR2_CTL[ SU SDP scanline indication ] = 0: (TRANS_VBLANK Vertical Blank End- TRANS_VBLANK Vertical Blank Start) > PSR2_CTL Block Count Number value in lines PSR2_CTL[ SU SDP scanline indication ] = 1: (TRANS_VBLANK Vertical Blank End- TRANS_VBLANK Vertical Blank Start- 1) > PSR2_CTL Block Count Number value in lines Bspec: 49274 Signed-off-by: Jouni Högander Reviewed-by: Animesh Manna Link: https://patchwork.freedesktop.org/patch/msgid/20240607134917.1327574-12-jouni.hogander@intel.com --- drivers/gpu/drm/i915/display/intel_psr.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c index 8f2b8b4620bd..7ee03bf924c4 100644 --- a/drivers/gpu/drm/i915/display/intel_psr.c +++ b/drivers/gpu/drm/i915/display/intel_psr.c @@ -1250,6 +1250,9 @@ static bool wake_lines_fit_into_vblank(struct intel_dp *intel_dp, crtc_state->hw.adjusted_mode.crtc_vblank_start; int wake_lines = psr2_block_count_lines(intel_dp); + if (crtc_state->req_psr2_sdp_prior_scanline) + vblank -= 1; + /* Vblank >= PSR2_CTL Block Count Number maximum line count */ if (vblank < wake_lines) return false;