disp: msm: dsi: enable dfps trigger at mdp intf flush

This change allows dynamic refresh trigger to sw trigger
and mdp intf flush. With this we can make sure that DSI
timing/clock update and mdp intf timings are updated in
one vsync.

Change-Id: Ic807f498e2e47be6dd0f1e11ff1fc0896a8ec758
Signed-off-by: Vara Reddy <varar@codeaurora.org>

msm/dsi/dsi_drm.c

@@ -990,8 +990,9 @@ int dsi_conn_post_kickoff(struct drm_connector *connector,
 	struct dsi_display_mode adj_mode;
 	struct dsi_display *display;
 	struct dsi_display_ctrl *m_ctrl, *ctrl;
-	int i, rc = 0;
+	int i, rc = 0, ctrl_version;
 	bool enable;
+	struct dsi_dyn_clk_caps *dyn_clk_caps;
 
 	if (!connector || !connector->state) {
 		DSI_ERR("invalid connector or connector state\n");
@@ -1007,9 +1008,11 @@ int dsi_conn_post_kickoff(struct drm_connector *connector,
 	c_bridge = to_dsi_bridge(encoder->bridge);
 	adj_mode = c_bridge->dsi_mode;
 	display = c_bridge->display;
+	dyn_clk_caps = &(display->panel->dyn_clk_caps);
 
 	if (adj_mode.dsi_mode_flags & DSI_MODE_FLAG_VRR) {
 		m_ctrl = &display->ctrl[display->clk_master_idx];
+		ctrl_version = m_ctrl->ctrl->version;
 		rc = dsi_ctrl_timing_db_update(m_ctrl->ctrl, false);
 		if (rc) {
 			DSI_ERR("[%s] failed to dfps update  rc=%d\n",
@@ -1017,6 +1020,17 @@ int dsi_conn_post_kickoff(struct drm_connector *connector,
 			return -EINVAL;
 		}
 
+		if ((ctrl_version >= DSI_CTRL_VERSION_2_5) &&
+				(dyn_clk_caps->maintain_const_fps)) {
+			display_for_each_ctrl(i, display) {
+				ctrl = &display->ctrl[i];
+				rc = dsi_ctrl_wait4dynamic_refresh_done(
+						ctrl->ctrl);
+				if (rc)
+					DSI_ERR("wait4dfps refresh failed\n");
+			}
+		}
+
 		/* Update the rest of the controllers */
 		display_for_each_ctrl(i, display) {
 			ctrl = &display->ctrl[i];