mipi-panel: RPI: avoid the flicker of rpi panel when shutdown/reboot/resume.

1. this issue only occurs at the particulare rpi panel.

Change-Id: I8d1d1d081b98a6b2ab1c52135b6327c35d5637d7

Author: singhomelee

drivers/miniarm/dsi/panel-toshiba-tc358762.c

@@ -184,7 +184,12 @@ static int tc358762_of_get_native_mode(struct tc358762 *panel)
 	return 1;
 }
 
+extern struct backlight_device * tinker_mcu_get_backlightdev(void);
 extern int tinker_mcu_set_bright(int bright);
+extern int tinker_mcu_screen_power_up(void);
+extern int tinker_mcu_screen_power_off(void);
+extern void tinker_ft5406_start_polling(void);
+
 static int tc358762_disable(struct drm_panel *panel)
 {
 	struct tc358762 *p = to_tc358762(panel);
@@ -205,6 +210,8 @@ static int tc358762_disable(struct drm_panel *panel)
 	if (p->desc && p->desc->delay.disable)
 		msleep(p->desc->delay.disable);
 
+	tinker_mcu_screen_power_off();
+
 	p->enabled = false;
 
 	return 0;
@@ -296,9 +303,6 @@ static int tc358762_prepare(struct drm_panel *panel)
 	return 0;
 }
 
-extern struct backlight_device * tinker_mcu_get_backlightdev(void);
-extern void tinker_mcu_screen_power_up(void);
-extern void tinker_ft5406_start_polling(void);
 static int tc358762_enable(struct drm_panel *panel)
 {
 	struct tc358762 *p = to_tc358762(panel);
@@ -311,9 +315,13 @@ static int tc358762_enable(struct drm_panel *panel)
 	if(trigger_bridge) {
 		pr_info("tinker_mcu_screen_power_up");
 		tinker_mcu_screen_power_up();
+
+                /*Some particulare rpi panel need powering on/off during sususpned/resume to avoid
+		 the flicker about 7 seconds */
+                //trigger_bridge = 0;
+
 		msleep(100);
 		tinker_ft5406_start_polling();
-		trigger_bridge = 0;
 	}
 
 	tc358762_dsi_init(p);

drivers/misc/tinker_mcu.c

@@ -136,14 +136,27 @@ static int init_cmd_check(struct tinker_mcu_data *mcu_data)
 	return ret;
 }
 
-int tinker_mcu_screen_power_up(void)
+int tinker_mcu_screen_power_off(void)
 {
 	if (!connected)
 		return -ENODEV;
 
 	LOG_INFO("\n");
 	send_cmds(g_mcu_data->client, "8500");
-	msleep(800);
+	msleep(10);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(tinker_mcu_screen_power_off);
+
+int tinker_mcu_screen_power_up(void)
+{
+	if (!connected)
+		return -ENODEV;
+
+	LOG_INFO("\n");
+	//send_cmds(g_mcu_data->client, "8500");
+	//msleep(800);
 	send_cmds(g_mcu_data->client, "8501");
 	send_cmds(g_mcu_data->client, "8104");
 
@@ -300,6 +313,8 @@ static int tinker_mcu_probe(struct i2c_client *client,
 		return ret;
 	}
 
+	tinker_mcu_screen_power_off();
+
 	return 0;
 
 error: