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@intel.com>
Reviewed-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240607134917.1327574-13-jouni.hogander@intel.com

diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 7ee03bf924c4b8ee1ab1421cb61b426d5478e5ce..658216d50fdd2602b9bc4edd7074d4f4fd3aa685 100644 (file)
--- 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 wake_lines_fit_into_vblank(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;