> -----Original Message-----
> From: Hogander, Jouni <jouni.hogander@xxxxxxxxx>
> Sent: Wednesday, June 5, 2024 3:56 PM
> To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> Cc: Manna, Animesh <animesh.manna@xxxxxxxxx>; Kahola, Mika
> <mika.kahola@xxxxxxxxx>; Hogander, Jouni <jouni.hogander@xxxxxxxxx>
> Subject: [PATCH v6 13/26] drm/i915/psr: Check vblank against IO buffer wake
> time on Lunarlake
>
> As Lunarlake doesn't have block count configuration vblank should be
> checked against IO buffer wake time.
>
> Bspec: 68920
>
> Signed-off-by: Jouni Högander <jouni.hogander@xxxxxxxxx>
Reviewed-by: Animesh Manna <animesh.manna@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/display/intel_psr.c | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_psr.c
> b/drivers/gpu/drm/i915/display/intel_psr.c
> index 471b60032304..c9fcb25184ee 100644
> --- a/drivers/gpu/drm/i915/display/intel_psr.c
> +++ b/drivers/gpu/drm/i915/display/intel_psr.c
> @@ -1246,9 +1246,13 @@ static int intel_psr_entry_setup_frames(struct
> intel_dp *intel_dp, static bool vblank_length_valid(struct intel_dp *intel_dp,
> const struct intel_crtc_state *crtc_state) {
> + struct drm_i915_private *i915 = dp_to_i915(intel_dp);
> int vblank = crtc_state->hw.adjusted_mode.crtc_vblank_end -
> crtc_state->hw.adjusted_mode.crtc_vblank_start;
> - int wake_lines = psr2_block_count_lines(intel_dp);
> + int wake_lines;
> +
> + wake_lines = DISPLAY_VER(i915) < 20 ?
> psr2_block_count_lines(intel_dp) :
> + intel_dp->alpm_parameters.io_wake_lines;
>
> if (crtc_state->req_psr2_sdp_prior_scanline)
> vblank -= 1;
> --
> 2.34.1
