[PATCH 19/26] drm/i915/psr: Write the PR config DPCDs in burst mode

[Ankit Nautiyal <ankit.k.nautiyal@intel.com>]

Replace the consecutive single-byte writes to PANEL_REPLAY_CONFIG and
CONFIG2 with one drm_dp_dpcd_write() burst starting at PANEL_REPLAY_CONFIG,
reducing AUX transactions.

v2: Drop extra conditions, and optimize variables. (Ville)
v3: Drop the error check after write. (Ville)

Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_psr.c | 26 ++++++++++++------------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 257bfaed2e10..e011c15ef7d8 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -783,27 +783,27 @@ static bool psr2_su_region_et_valid(struct intel_connector *connector, bool pane
 static void _panel_replay_enable_sink(struct intel_dp *intel_dp,
 				      const struct intel_crtc_state *crtc_state)
 {
-	u8 val = DP_PANEL_REPLAY_ENABLE |
-		DP_PANEL_REPLAY_VSC_SDP_CRC_EN |
-		DP_PANEL_REPLAY_UNRECOVERABLE_ERROR_EN |
-		DP_PANEL_REPLAY_RFB_STORAGE_ERROR_EN |
-		DP_PANEL_REPLAY_ACTIVE_FRAME_CRC_ERROR_EN;
-	u8 panel_replay_config2 = DP_PANEL_REPLAY_CRC_VERIFICATION;
+	u8 panel_replay_config[2];
+
+	panel_replay_config[0] = DP_PANEL_REPLAY_ENABLE |
+				 DP_PANEL_REPLAY_VSC_SDP_CRC_EN |
+				 DP_PANEL_REPLAY_UNRECOVERABLE_ERROR_EN |
+				 DP_PANEL_REPLAY_RFB_STORAGE_ERROR_EN |
+				 DP_PANEL_REPLAY_ACTIVE_FRAME_CRC_ERROR_EN;
+	panel_replay_config[1] = DP_PANEL_REPLAY_CRC_VERIFICATION;
 
 	if (crtc_state->has_sel_update)
-		val |= DP_PANEL_REPLAY_SU_ENABLE;
+		panel_replay_config[0] |= DP_PANEL_REPLAY_SU_ENABLE;
 
 	if (crtc_state->enable_psr2_su_region_et)
-		val |= DP_PANEL_REPLAY_ENABLE_SU_REGION_ET;
+		panel_replay_config[0] |= DP_PANEL_REPLAY_ENABLE_SU_REGION_ET;
 
 	if (crtc_state->req_psr2_sdp_prior_scanline)
-		panel_replay_config2 |=
+		panel_replay_config[1] |=
 			DP_PANEL_REPLAY_SU_REGION_SCANLINE_CAPTURE;
 
-	drm_dp_dpcd_writeb(&intel_dp->aux, PANEL_REPLAY_CONFIG, val);
-
-	drm_dp_dpcd_writeb(&intel_dp->aux, PANEL_REPLAY_CONFIG2,
-			   panel_replay_config2);
+	drm_dp_dpcd_write(&intel_dp->aux, PANEL_REPLAY_CONFIG,
+			  panel_replay_config, sizeof(panel_replay_config));
 }
 
 static void _psr_enable_sink(struct intel_dp *intel_dp,
-- 
2.45.2