Merge "msm: mdss: serialize dynamic fps and dynamic bit clock updates"

drivers/video/fbdev/msm/mdss_dsi.c

@@ -2370,6 +2370,49 @@ end_update:
 	return rc;
 }
 
+static int mdss_dsi_dynamic_bitclk_config(struct mdss_panel_data *pdata)
+{
+	int rc = 0;
+	struct mdss_dsi_ctrl_pdata *ctrl_pdata = NULL;
+	struct mdss_panel_info *pinfo;
+
+	pr_debug("%s+:\n", __func__);
+
+	if (pdata == NULL) {
+		pr_err("%s: Invalid input data\n", __func__);
+		return -EINVAL;
+	}
+
+	ctrl_pdata = container_of(pdata, struct mdss_dsi_ctrl_pdata,
+			panel_data);
+
+	if (!ctrl_pdata->panel_data.panel_info.dynamic_bitclk) {
+		pr_err("Dynamic bitclk not enabled for this panel\n");
+		return -EINVAL;
+	}
+
+	pinfo = &pdata->panel_info;
+
+	if (!pinfo->new_clk_rate || (pinfo->clk_rate == pinfo->new_clk_rate)) {
+		pr_debug("Bit clock update is not needed\n");
+		return 0;
+	}
+
+	rc = __mdss_dsi_dynamic_clock_switch(&ctrl_pdata->panel_data,
+		pinfo->new_clk_rate);
+	if (!rc && mdss_dsi_is_hw_config_split(ctrl_pdata->shared_data)) {
+		struct mdss_dsi_ctrl_pdata *octrl =
+			mdss_dsi_get_other_ctrl(ctrl_pdata);
+		rc = __mdss_dsi_dynamic_clock_switch(&octrl->panel_data,
+			pinfo->new_clk_rate);
+		if (rc)
+			pr_err("failed to switch DSI bitclk for sctrl\n");
+	} else if (rc) {
+		pr_err("failed to switch DSI bitclk\n");
+	}
+	return rc;
+}
+
 static int mdss_dsi_dfps_config(struct mdss_panel_data *pdata, int new_fps)
 {
 	int rc = 0;
@@ -2821,19 +2864,14 @@ static ssize_t dynamic_bitclk_sysfs_wta(struct device *dev,
 		return -EINVAL;
 	}
 
-	rc = __mdss_dsi_dynamic_clock_switch(&ctrl_pdata->panel_data,
-		clk_rate);
-	if (!rc && mdss_dsi_is_hw_config_split(ctrl_pdata->shared_data)) {
+	pinfo->new_clk_rate = clk_rate;
+	if (mdss_dsi_is_hw_config_split(ctrl_pdata->shared_data)) {
 		struct mdss_dsi_ctrl_pdata *octrl =
 			mdss_dsi_get_other_ctrl(ctrl_pdata);
-		rc = __mdss_dsi_dynamic_clock_switch(&octrl->panel_data,
-			clk_rate);
-		if (rc)
-			pr_err("failed to switch DSI bitclk for sctrl\n");
-	} else if (rc) {
-		pr_err("failed to switch DSI bitclk\n");
-	}
+		struct mdss_panel_info *opinfo = &octrl->panel_data.panel_info;
 
+		opinfo->new_clk_rate = clk_rate;
+	}
 	return count;
 } /* dynamic_bitclk_sysfs_wta */
 
@@ -3061,6 +3099,14 @@ static int mdss_dsi_event_handler(struct mdss_panel_data *pdata,
 	case MDSS_EVENT_AVR_MODE:
 		mdss_dsi_avr_config(ctrl_pdata, (int)(unsigned long) arg);
 		break;
+	case MDSS_EVENT_DSI_DYNAMIC_BITCLK:
+		if (ctrl_pdata->panel_data.panel_info.dynamic_bitclk) {
+			rc = mdss_dsi_dynamic_bitclk_config(pdata);
+			if (rc)
+				pr_err("unable to change bitclk error-%d\n",
+					rc);
+		}
+		break;
 	default:
 		pr_debug("%s: unhandled event=%d\n", __func__, event);
 		break;

drivers/video/fbdev/msm/mdss_mdp_overlay.c

@@ -2659,6 +2659,13 @@ int mdss_mdp_overlay_kickoff(struct msm_fb_data_type *mfd,
 		goto commit_fail;
 	}
 
+	ret = mdss_mdp_ctl_intf_event(ctl, MDSS_EVENT_DSI_DYNAMIC_BITCLK,
+		NULL, CTL_INTF_EVENT_FLAG_SKIP_BROADCAST);
+	if (IS_ERR_VALUE(ret)) {
+		pr_err("failed to update dynamic bit clk!\n");
+		goto commit_fail;
+	}
+
 	mutex_lock(&mdp5_data->ov_lock);
 
 	/* Disable secure display/camera for video mode panels */

drivers/video/fbdev/msm/mdss_panel.h

@@ -308,6 +308,7 @@ enum mdss_intf_events {
 	MDSS_EVENT_DSI_TIMING_DB_CTRL,
 	MDSS_EVENT_AVR_MODE,
 	MDSS_EVENT_REGISTER_CLAMP_HANDLER,
+	MDSS_EVENT_DSI_DYNAMIC_BITCLK,
 	MDSS_EVENT_MAX,
 };
 
@@ -814,6 +815,8 @@ struct mdss_panel_info {
 	bool esd_check_enabled;
 	bool allow_phy_power_off;
 	char dfps_update;
+	/* new requested bitclk before it is updated in hw */
+	int new_clk_rate;
 	/* new requested fps before it is updated in hw */
 	int new_fps;
 	/* stores initial fps after boot */