> -----Original Message----- > From: Hogander, Jouni <[email protected]> > Sent: Wednesday, June 5, 2024 3:56 PM > To: [email protected] > Cc: Manna, Animesh <[email protected]>; Kahola, Mika > <[email protected]>; Hogander, Jouni <[email protected]> > Subject: [PATCH v6 12/26] drm/i915/psr: Take into account SU SDP scanline > indication in vblank check > > 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 <[email protected]>
Reviewed-by: Animesh Manna <[email protected]> > --- > 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 23c3fed1f983..471b60032304 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 vblank_length_valid(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; > -- > 2.34.1
