mipi-panel: powertip: avoid the flicker when rebooting.

Change-Id: I61f571982ce6b607fe4903159a1fa85d2600beaf

Author: singhomelee

drivers/gpu/drm/panel/panel-asus-ili9881c.c

@@ -672,7 +672,8 @@ static const struct ili9881c_instr ili9881c_init_1[] = {//5-inch
 
 extern struct backlight_device * tinker_mcu_ili9881c_get_backlightdev(void);
 extern int tinker_mcu_ili9881c_set_bright(int bright);
-extern void tinker_mcu_ili9881c_screen_power_up(void);
+extern int tinker_mcu_ili9881c_screen_power_up(void);
+extern int tinker_mcu_ili9881c_screen_power_off(void);
 extern void tinker_ft5406_start_polling(void);
 
 static inline struct ili9881c *panel_to_ili9881c(struct drm_panel *panel)
@@ -1013,6 +1014,15 @@ int ili9881c_dsi_probe(struct mipi_dsi_device *dsi)
 	return 0;
 }
 
+void ili9881c_dsi_shutdown(struct mipi_dsi_device *dsi)
+{
+	struct ili9881c *ctx = mipi_dsi_get_drvdata(dsi);
+	pr_info("%s\n", __func__);
+
+	ili9881c_disable(&ctx->panel);
+	tinker_mcu_ili9881c_screen_power_off();
+}
+
 static const struct of_device_id ili9881c_of_match[] = {
 	{ .compatible = "asus,ili9881c" },
 	{ }
@@ -1022,6 +1032,7 @@ MODULE_DEVICE_TABLE(of, ili9881c_of_match);
 static struct mipi_dsi_driver ili9881c_dsi_driver = {
 	.probe		= ili9881c_dsi_probe,
 	.remove		= ili9881c_dsi_remove,
+	.shutdown	= ili9881c_dsi_shutdown,
 	.driver = {
 		.name		= "ili9881c-dsi",
 		.of_match_table	= ili9881c_of_match,

drivers/gpu/drm/panel/panel-asus.c

@@ -23,7 +23,6 @@
 #include <video/of_videomode.h>
 #include <video/videomode.h>
 
-
 extern int tinker_mcu_ili9881c_is_connected(void);
 extern int tinker_mcu_is_connected(void);
 
@@ -33,7 +32,8 @@ extern int tc358762_dsi_shutdown(struct mipi_dsi_device *dsi);
 
 extern int ili9881c_dsi_probe(struct mipi_dsi_device *dsi);
 extern int ili9881c_dsi_remove(struct mipi_dsi_device *dsi);
-	
+extern int ili9881c_dsi_shutdown(struct mipi_dsi_device *dsi);
+
 static int asus_dsi_probe(struct mipi_dsi_device *dsi)
 {
 	int ret = 0;
@@ -43,7 +43,7 @@ static int asus_dsi_probe(struct mipi_dsi_device *dsi)
 	else
 		ret = ili9881c_dsi_probe(dsi);
 	printk("asus_dsi_probe -\n");
-	
+
 	return ret;
 }
 
@@ -65,6 +65,8 @@ void asus_dsi_shutdown(struct mipi_dsi_device *dsi)
 	printk("asus_dsi_shutdown+\n");
 	if (tinker_mcu_is_connected())
 		tc358762_dsi_shutdown(dsi);
+         else
+		ili9881c_dsi_shutdown(dsi);
 	printk("asus_dsi_shutdown-\n");
 
 	return;

drivers/misc/tinker_mcu_ili9881c.c

@@ -144,6 +144,18 @@ static int init_cmd_check(struct tinker_mcu_data *mcu_data)
 	return ret;
 }
 
+int tinker_mcu_ili9881c_screen_power_off(void)
+{
+	if (!connected)
+		return -ENODEV;
+
+	send_cmds(g_mcu_ili9881c_data->client, "0500");
+	msleep(20);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(tinker_mcu_ili9881c_screen_power_off);
+
 int tinker_mcu_ili9881c_screen_power_up(void)
 {
 	if (!connected)