xref: /openbmc/u-boot/drivers/power/pmic/max8998.c (revision 85231c08)
1 /*
2  *  Copyright (C) 2016 Samsung Electronics
3  *  Jaehoon Chung <jh80.chung@samsung.com>
4  *
5  * SPDX-License-Identifier:	GPL-2.0+
6  */
7 
8 #include <common.h>
9 #include <dm.h>
10 #include <errno.h>
11 #include <i2c.h>
12 #include <power/pmic.h>
13 #include <power/max8998_pmic.h>
14 
15 DECLARE_GLOBAL_DATA_PTR;
16 
17 static int max8998_reg_count(struct udevice *dev)
18 {
19 	return PMIC_NUM_OF_REGS;
20 }
21 
22 static int max8998_write(struct udevice *dev, uint reg, const uint8_t *buff,
23 		int len)
24 {
25 	int ret;
26 
27 	ret = dm_i2c_write(dev, reg, buff, len);
28 	if (ret)
29 		pr_err("write error to device: %p register: %#x!", dev, reg);
30 
31 	return ret;
32 }
33 
34 static int max8998_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
35 {
36 	int ret;
37 
38 	ret = dm_i2c_read(dev, reg, buff, len);
39 	if (ret)
40 		pr_err("read error from device: %p register: %#x!", dev, reg);
41 
42 	return ret;
43 }
44 
45 static struct dm_pmic_ops max8998_ops = {
46 	.reg_count = max8998_reg_count,
47 	.read	= max8998_read,
48 	.write	= max8998_write,
49 };
50 
51 static const struct udevice_id max8998_ids[] = {
52 	{ .compatible = "maxim,max8998" },
53 	{ }
54 };
55 
56 U_BOOT_DRIVER(pmic_max8998) = {
57 	.name		= "max8998_pmic",
58 	.id		= UCLASS_PMIC,
59 	.of_match	= max8998_ids,
60 	.ops		= &max8998_ops,
61 };
62