disp: msm: sde: Allow for overriding CP features flush mechanism

Allow for overriding color processing features that normally uses
DSPP flush to use LM flush instead. This is required on targets
where some of the DSPP features have been tied to LM flush bits.

This changes adds a field in color processing node to track if the
override is needed and enables LM flush override for rounded corner
on target requiring it.

Change-Id: I584bd7b20dfc9fc7795b1b3b10e2f17a82945ce4
Signed-off-by: Amine Najahi <[email protected]>

msm/sde/sde_color_processing.c

@@ -30,6 +30,7 @@ struct sde_cp_node {
 	struct list_head active_list;
 	struct list_head dirty_list;
 	bool is_dspp_feature;
+	bool lm_flush_override;
 	u32 prop_blob_sz;
 	struct sde_irq_callback *irq;
 };
@@ -1974,7 +1975,8 @@ void sde_cp_crtc_apply_properties(struct drm_crtc *crtc)
 			dirty_list) {
 		sde_cp_crtc_setfeature(prop_node, sde_crtc);
 		sde_cp_dspp_flush_helper(sde_crtc, prop_node->feature);
-		if (prop_node->is_dspp_feature)
+		if (prop_node->is_dspp_feature &&
+				!prop_node->lm_flush_override)
 			set_dspp_flush = true;
 		else
 			set_lm_flush = true;
@@ -2636,6 +2638,8 @@ static void dspp_rc_install_property(struct drm_crtc *crtc)
 	char feature_name[256];
 	struct sde_kms *kms = NULL;
 	struct sde_mdss_cfg *catalog = NULL;
+	struct sde_cp_node *prop_node = NULL;
+	struct sde_crtc *sde_crtc = NULL;
 	u32 version;
 
 	if (!crtc) {
@@ -2643,6 +2647,12 @@ static void dspp_rc_install_property(struct drm_crtc *crtc)
 		return;
 	}
 
+	sde_crtc = to_sde_crtc(crtc);
+	if (!sde_crtc) {
+		DRM_ERROR("invalid sde_crtc %pK\n", sde_crtc);
+		return;
+	}
+
 	kms = get_kms(crtc);
 	catalog = kms->catalog;
 	version = catalog->dspp[0].sblk->rc.version >> 16;
@@ -2654,6 +2664,19 @@ static void dspp_rc_install_property(struct drm_crtc *crtc)
 				SDE_CP_CRTC_DSPP_RC_MASK,
 				sizeof(struct drm_msm_rc_mask_cfg));
 
+		/* Override flush mechanism to use layer mixer flush bits */
+		if (!catalog->rc_lm_flush_override)
+			break;
+
+		DRM_DEBUG("rc using lm flush override\n");
+		list_for_each_entry(prop_node, &sde_crtc->feature_list,
+				feature_list) {
+			if (prop_node->feature == SDE_CP_CRTC_DSPP_RC_MASK) {
+				prop_node->lm_flush_override = true;
+				break;
+			}
+		}
+
 		break;
 	default:
 		DRM_ERROR("version %d not supported\n", version);

msm/sde/sde_hw_catalog.c

@@ -4751,6 +4751,7 @@ static int _sde_hardware_pre_caps(struct sde_mdss_cfg *sde_cfg, uint32_t hw_rev)
 		sde_cfg->has_sui_blendstage = true;
 		sde_cfg->vbif_disable_inner_outer_shareable = true;
 		sde_cfg->mdss_hw_block_size = 0x158;
+		sde_cfg->rc_lm_flush_override = true;
 	} else if (IS_SHIMA_TARGET(hw_rev)) {
 		sde_cfg->has_cwb_support = true;
 		sde_cfg->has_wb_ubwc = true;

msm/sde/sde_hw_catalog.h

@@ -1416,6 +1416,7 @@ struct sde_perf_cfg {
  * @has_3d_merge_reset Supports 3D merge reset
  * @has_decimation     Supports decimation
  * @has_trusted_vm_support	     Supported HW sharing with trusted VM
+ * @rc_lm_flush_override        Support Rounded Corner using layer mixer flush
  * @has_mixer_combined_alpha     Mixer has single register for FG & BG alpha
  * @vbif_disable_inner_outer_shareable     VBIF requires disabling shareables
  * @inline_disable_const_clr     Disable constant color during inline rotate
@@ -1494,6 +1495,7 @@ struct sde_mdss_cfg {
 	bool has_base_layer;
 	bool has_demura;
 	bool has_trusted_vm_support;
+	bool rc_lm_flush_override;
 	u32 demura_supported[SSPP_MAX][2];
 	u32 qseed_sw_lib_rev;
 	u32 qseed_hw_version;