rockchip: board: move charge display function to charge display uclass

Change-Id: Ib5143d8bd9beafc585438e57216f2b7c17932859
Signed-off-by: Joseph Chen <chenjh@rock-chips.com>

arch/arm/mach-rockchip/board.c

@@ -114,27 +114,6 @@ int fb_set_reboot_flag(void)
 }
 #endif
 
-#ifdef CONFIG_DM_CHARGE_DISPLAY
-static int charge_display(void)
-{
-	int ret;
-	struct udevice *dev;
-
-	ret = uclass_get_device(UCLASS_CHARGE_DISPLAY, 0, &dev);
-	if (ret) {
-		if (ret != -ENODEV) {
-			debug("Get UCLASS CHARGE DISPLAY failed: %d\n", ret);
-			return ret;
-		} else {
-			debug("Can't find charge display driver\n");
-		}
-		return 0;
-	}
-
-	return charge_display_show(dev);
-}
-#endif
-
 __weak int rk_board_init(void)
 {
 	return 0;

drivers/power/charge-display-uclass.c

@@ -9,7 +9,7 @@
 #include <dm.h>
 #include <power/charge_display.h>
 
-int charge_display_show(struct udevice *dev)
+static int charge_display_show(struct udevice *dev)
 {
 	const struct dm_charge_display_ops *ops = dev_get_driver_ops(dev);
 
@@ -19,6 +19,20 @@ int charge_display_show(struct udevice *dev)
 	return ops->show(dev);
 }
 
+int charge_display(void)
+{
+	struct udevice *dev;
+	int ret;
+
+	ret = uclass_get_device(UCLASS_CHARGE_DISPLAY, 0, &dev);
+	if (ret) {
+		debug("Get charge display failed, ret=%d\n", ret);
+		return ret;
+	}
+
+	return charge_display_show(dev);
+}
+
 UCLASS_DRIVER(charge_display) = {
 	.id	= UCLASS_CHARGE_DISPLAY,
 	.name	= "charge_display",

include/power/charge_display.h

@@ -11,6 +11,6 @@ struct dm_charge_display_ops {
 	int (*show)(struct udevice *dev);
 };
 
-int charge_display_show(struct udevice *dev);
+int charge_display(void);
 
 #endif