xref: /OK3568_Linux_fs/u-boot/drivers/power/charge-display-uclass.c (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun  * (C) Copyright 2017 Rockchip Electronics Co., Ltd
3*4882a593Smuzhiyun  *
4*4882a593Smuzhiyun  * SPDX-License-Identifier:     GPL-2.0+
5*4882a593Smuzhiyun  */
6*4882a593Smuzhiyun 
7*4882a593Smuzhiyun #include <command.h>
8*4882a593Smuzhiyun #include <common.h>
9*4882a593Smuzhiyun #include <dm.h>
10*4882a593Smuzhiyun #include <power/charge_display.h>
11*4882a593Smuzhiyun 
charge_display_show(struct udevice * dev)12*4882a593Smuzhiyun int charge_display_show(struct udevice *dev)
13*4882a593Smuzhiyun {
14*4882a593Smuzhiyun 	const struct dm_charge_display_ops *ops = dev_get_driver_ops(dev);
15*4882a593Smuzhiyun 
16*4882a593Smuzhiyun 	if (!ops || !ops->show)
17*4882a593Smuzhiyun 		return -ENOSYS;
18*4882a593Smuzhiyun 
19*4882a593Smuzhiyun 	return ops->show(dev);
20*4882a593Smuzhiyun }
21*4882a593Smuzhiyun 
charge_display(void)22*4882a593Smuzhiyun int charge_display(void)
23*4882a593Smuzhiyun {
24*4882a593Smuzhiyun 	struct udevice *dev;
25*4882a593Smuzhiyun 	int ret;
26*4882a593Smuzhiyun 
27*4882a593Smuzhiyun 	ret = uclass_get_device(UCLASS_CHARGE_DISPLAY, 0, &dev);
28*4882a593Smuzhiyun 	if (ret) {
29*4882a593Smuzhiyun 		debug("Get charge display failed, ret=%d\n", ret);
30*4882a593Smuzhiyun 		return ret;
31*4882a593Smuzhiyun 	}
32*4882a593Smuzhiyun 
33*4882a593Smuzhiyun 	return charge_display_show(dev);
34*4882a593Smuzhiyun }
35*4882a593Smuzhiyun 
36*4882a593Smuzhiyun UCLASS_DRIVER(charge_display) = {
37*4882a593Smuzhiyun 	.id	= UCLASS_CHARGE_DISPLAY,
38*4882a593Smuzhiyun 	.name	= "charge_display",
39*4882a593Smuzhiyun };
40