1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Copyright (C) 2015 Samsung Electronics
3*4882a593Smuzhiyun * Przemyslaw Marczak <p.marczak@samsung.com>
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include <common.h>
9*4882a593Smuzhiyun #include <fdtdec.h>
10*4882a593Smuzhiyun #include <errno.h>
11*4882a593Smuzhiyun #include <dm.h>
12*4882a593Smuzhiyun #include <i2c.h>
13*4882a593Smuzhiyun #include <power/pmic.h>
14*4882a593Smuzhiyun #include <power/regulator.h>
15*4882a593Smuzhiyun #include <power/sandbox_pmic.h>
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun DECLARE_GLOBAL_DATA_PTR;
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun static const struct pmic_child_info pmic_children_info[] = {
20*4882a593Smuzhiyun { .prefix = SANDBOX_OF_LDO_PREFIX, .driver = SANDBOX_LDO_DRIVER },
21*4882a593Smuzhiyun { .prefix = SANDBOX_OF_BUCK_PREFIX, .driver = SANDBOX_BUCK_DRIVER },
22*4882a593Smuzhiyun { },
23*4882a593Smuzhiyun };
24*4882a593Smuzhiyun
sandbox_pmic_reg_count(struct udevice * dev)25*4882a593Smuzhiyun static int sandbox_pmic_reg_count(struct udevice *dev)
26*4882a593Smuzhiyun {
27*4882a593Smuzhiyun return SANDBOX_PMIC_REG_COUNT;
28*4882a593Smuzhiyun }
29*4882a593Smuzhiyun
sandbox_pmic_write(struct udevice * dev,uint reg,const uint8_t * buff,int len)30*4882a593Smuzhiyun static int sandbox_pmic_write(struct udevice *dev, uint reg,
31*4882a593Smuzhiyun const uint8_t *buff, int len)
32*4882a593Smuzhiyun {
33*4882a593Smuzhiyun if (dm_i2c_write(dev, reg, buff, len)) {
34*4882a593Smuzhiyun pr_err("write error to device: %p register: %#x!", dev, reg);
35*4882a593Smuzhiyun return -EIO;
36*4882a593Smuzhiyun }
37*4882a593Smuzhiyun
38*4882a593Smuzhiyun return 0;
39*4882a593Smuzhiyun }
40*4882a593Smuzhiyun
sandbox_pmic_read(struct udevice * dev,uint reg,uint8_t * buff,int len)41*4882a593Smuzhiyun static int sandbox_pmic_read(struct udevice *dev, uint reg,
42*4882a593Smuzhiyun uint8_t *buff, int len)
43*4882a593Smuzhiyun {
44*4882a593Smuzhiyun if (dm_i2c_read(dev, reg, buff, len)) {
45*4882a593Smuzhiyun pr_err("read error from device: %p register: %#x!", dev, reg);
46*4882a593Smuzhiyun return -EIO;
47*4882a593Smuzhiyun }
48*4882a593Smuzhiyun
49*4882a593Smuzhiyun return 0;
50*4882a593Smuzhiyun }
51*4882a593Smuzhiyun
sandbox_pmic_bind(struct udevice * dev)52*4882a593Smuzhiyun static int sandbox_pmic_bind(struct udevice *dev)
53*4882a593Smuzhiyun {
54*4882a593Smuzhiyun if (!pmic_bind_children(dev, dev_ofnode(dev), pmic_children_info))
55*4882a593Smuzhiyun pr_err("%s:%d PMIC: %s - no child found!", __func__, __LINE__,
56*4882a593Smuzhiyun dev->name);
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun /* Always return success for this device - allows for PMIC I/O */
59*4882a593Smuzhiyun return 0;
60*4882a593Smuzhiyun }
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun static struct dm_pmic_ops sandbox_pmic_ops = {
63*4882a593Smuzhiyun .reg_count = sandbox_pmic_reg_count,
64*4882a593Smuzhiyun .read = sandbox_pmic_read,
65*4882a593Smuzhiyun .write = sandbox_pmic_write,
66*4882a593Smuzhiyun };
67*4882a593Smuzhiyun
68*4882a593Smuzhiyun static const struct udevice_id sandbox_pmic_ids[] = {
69*4882a593Smuzhiyun { .compatible = "sandbox,pmic" },
70*4882a593Smuzhiyun { }
71*4882a593Smuzhiyun };
72*4882a593Smuzhiyun
73*4882a593Smuzhiyun U_BOOT_DRIVER(sandbox_pmic) = {
74*4882a593Smuzhiyun .name = "sandbox_pmic",
75*4882a593Smuzhiyun .id = UCLASS_PMIC,
76*4882a593Smuzhiyun .of_match = sandbox_pmic_ids,
77*4882a593Smuzhiyun .bind = sandbox_pmic_bind,
78*4882a593Smuzhiyun .ops = &sandbox_pmic_ops,
79*4882a593Smuzhiyun };
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