Commit 8d18373a authored by Jouni Högander's avatar Jouni Högander
Browse files

drm/i915/psr: Check that vblank is long enough for psr2 



Ensure vblank >= psr2 vblank
where
Psr2 vblank = PSR2_CTL Block Count Number maximum line count.

Bspec: 71580, 49274

v2: Use calculated block count number maximum line count

Signed-off-by: default avatarJouni Högander <jouni.hogander@intel.com>
Reviewed-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230329150703.432072-6-jouni.hogander@intel.com
parent f389e7ac

drivers/gpu/drm/i915/display/intel_psr.c

+9 −0
Original line number Diff line number Diff line
@@ -968,6 +968,15 @@ static bool intel_psr2_config_valid(struct intel_dp *intel_dp, 
		return false;

	}



	/* Vblank >= PSR2_CTL Block Count Number maximum line count */

	if (crtc_state->hw.adjusted_mode.crtc_vblank_end -

	    crtc_state->hw.adjusted_mode.crtc_vblank_start <

	    psr2_block_count_lines(intel_dp)) {

		drm_dbg_kms(&dev_priv->drm,

			    "PSR2 not enabled, too short vblank time\n");

		return false;

	}



	if (HAS_PSR2_SEL_FETCH(dev_priv)) {

		if (!intel_psr2_sel_fetch_config_valid(intel_dp, crtc_state) &&

		    !HAS_PSR_HW_TRACKING(dev_priv)) {