disp: msm: dsi: allow CMD engine enable for cont-splash

Issuing a DSI command transfer while in continuous splash can
disable the CMD engine since no enable call has taken place.
Ignore updating the engine during display enable/disable paths
only for trusted VM and allow it for continuous splash.

Change-Id: I250df6a78af5558ad1e03a3931d11fd8d13e4555
Signed-off-by: Steve Cohen <[email protected]>

msm/dsi/dsi_display.c

@@ -274,7 +274,7 @@ static int dsi_display_cmd_engine_enable(struct dsi_display *display)
 	int rc = 0;
 	int i;
 	struct dsi_display_ctrl *m_ctrl, *ctrl;
-	bool skip_op = is_skip_op_required(display);
+	bool skip_op = display->trusted_vm_env;
 
 	m_ctrl = &display->ctrl[display->cmd_master_idx];
 	mutex_lock(&m_ctrl->ctrl->ctrl_lock);
@@ -316,7 +316,7 @@ static int dsi_display_cmd_engine_disable(struct dsi_display *display)
 	int rc = 0;
 	int i;
 	struct dsi_display_ctrl *m_ctrl, *ctrl;
-	bool skip_op = is_skip_op_required(display);
+	bool skip_op = display->trusted_vm_env;
 
 	m_ctrl = &display->ctrl[display->cmd_master_idx];
 	mutex_lock(&m_ctrl->ctrl->ctrl_lock);