disp: msm: sde: fix dcwb idx selection for pp_dither and CTL blocks

When cwb is triggered on built-in display secondary display
with (1,1,1) topology, improper dcwb_idx value is passed
to pp_dither and CTL registers. This change populates proper
dcwb_idx during pp block dt parsing and passes the same for
programming.

Change-Id: I543eede6f5fd9c2c80799503e3639ea9e89058ca
Signed-off-by: Mahadevan <quic_mahap@quicinc.com>

msm/sde/sde_encoder_phys_wb.c

@@ -551,6 +551,7 @@ static void _sde_encoder_phys_wb_setup_cwb(struct sde_encoder_phys *phys_enc, bo
 	struct sde_hw_pingpong *hw_pp = phys_enc->hw_pp;
 	struct sde_hw_dnsc_blur *hw_dnsc_blur = phys_enc->hw_dnsc_blur;
 	bool need_merge = (crtc->num_mixers > 1);
+	enum sde_dcwb;
 	int i = 0;
 	const int num_wb = 1;
 
@@ -575,10 +576,13 @@ static void _sde_encoder_phys_wb_setup_cwb(struct sde_encoder_phys *phys_enc, bo
 		intf_cfg.wb_count = num_wb;
 		intf_cfg.wb[0] = hw_wb->idx;
 
-		for (i = 0; i < crtc->num_mixers; i++)
+		for (i = 0; i < crtc->num_mixers; i++) {
-			intf_cfg.cwb[intf_cfg.cwb_count++] = (enum sde_cwb)
+			if (test_bit(SDE_WB_DCWB_CTRL, &hw_wb->caps->features))
-				(test_bit(SDE_WB_DCWB_CTRL, &hw_wb->caps->features) ?
+				intf_cfg.cwb[intf_cfg.cwb_count++] =
-					((hw_pp->idx % 2) + i) : (hw_pp->idx + i));
+						(enum sde_cwb)(hw_pp->dcwb_idx + i);
+			else
+				intf_cfg.cwb[intf_cfg.cwb_count++] = (enum sde_cwb)(hw_pp->idx + i);
+		}
 
 		if (hw_pp->merge_3d && (intf_cfg.merge_3d_count <
 				MAX_MERGE_3D_PER_CTL_V1) && need_merge)
@@ -1275,7 +1279,7 @@ static void _sde_encoder_phys_wb_update_cwb_flush(struct sde_encoder_phys *phys_
 	struct sde_hw_dnsc_blur *hw_dnsc_blur;
 	struct sde_crtc *crtc;
 	struct sde_crtc_state *crtc_state;
-	int i = 0, cwb_capture_mode = 0;
+	int cwb_capture_mode = 0;
 	enum sde_cwb cwb_idx = 0;
 	enum sde_dcwb dcwb_idx = 0;
 	enum sde_cwb src_pp_idx = 0;
@@ -1312,7 +1316,7 @@ static void _sde_encoder_phys_wb_update_cwb_flush(struct sde_encoder_phys *phys_
 	need_merge = (crtc->num_mixers > 1) ? true : false;
 
 	if (test_bit(SDE_WB_DCWB_CTRL, &hw_wb->caps->features)) {
-		dcwb_idx = (enum sde_dcwb) ((hw_pp->idx % 2) + i);
+		dcwb_idx = hw_pp->dcwb_idx;
 		if ((dcwb_idx + crtc->num_mixers) > DCWB_MAX) {
 			SDE_ERROR("[enc:%d, wb:%d] invalid DCWB config; dcwb=%d, num_lm=%d\n",
 				DRMID(phys_enc->parent), WBID(wb_enc), dcwb_idx, crtc->num_mixers);

msm/sde/sde_hw_catalog.c

@@ -3885,6 +3885,7 @@ static int sde_pp_parse_dt(struct device_node *np, struct sde_mdss_cfg *sde_cfg)
 			if (test_bit(SDE_FEATURE_DEDICATED_CWB, sde_cfg->features))
 				sde_cfg->dcwb_count++;
 		}
+		pp->dcwb_id = (sde_cfg->dcwb_count > 0) ? sde_cfg->dcwb_count : DCWB_MAX;
 
 		if (major_version < SDE_HW_MAJOR(SDE_HW_VER_700)) {
 			sblk->dsc.base = PROP_VALUE_ACCESS(prop_value,

msm/sde/sde_hw_catalog.h

@@ -1353,11 +1353,13 @@ struct sde_ds_cfg {
  * @features           bit mask identifying sub-blocks/features
  * @sblk               sub-blocks information
  * @merge_3d_id        merge_3d block id
+ * @dcwb:              ID of DCWB, DCWB_MAX if invalid
  */
 struct sde_pingpong_cfg  {
 	SDE_HW_BLK_INFO;
 	const struct sde_pingpong_sub_blks *sblk;
 	int merge_3d_id;
+	u32 dcwb_id;
 };
 
 /**

msm/sde/sde_hw_pingpong.c

@@ -515,6 +515,7 @@ struct sde_hw_blk_reg_map *sde_hw_pingpong_init(enum sde_pingpong idx,
 
 	c->idx = idx;
 	c->caps = cfg;
+	c->dcwb_idx = cfg->dcwb_id;
 	if (test_bit(SDE_PINGPONG_MERGE_3D, &cfg->features)) {
 		c->merge_3d = _sde_pp_merge_3d_init(cfg->merge_3d_id, addr, m);
 			if (IS_ERR(c->merge_3d)) {

msm/sde/sde_hw_pingpong.h

@@ -1,5 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
  * Copyright (c) 2015-2021, The Linux Foundation. All rights reserved.
  */
 
@@ -163,6 +164,9 @@ struct sde_hw_pingpong {
 	enum sde_pingpong idx;
 	const struct sde_pingpong_cfg *caps;
 
+	/* associated dcwb idx */
+	enum sde_dcwb dcwb_idx;
+
 	/* associated 3d_merge */
 	struct sde_hw_merge_3d *merge_3d;