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Tom Rini10e47792018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Peng Fan6f4f6d22015-08-14 11:36:16 +02002/*
3 * Copyright (C) 2015 Freescale Semiconductor, Inc
4 * Peng Fan <Peng.Fan@freescale.com>
Peng Fan6f4f6d22015-08-14 11:36:16 +02005 */
6
7#include <common.h>
8#include <fdtdec.h>
9#include <errno.h>
10#include <dm.h>
11#include <i2c.h>
12#include <power/pmic.h>
13#include <power/regulator.h>
14#include <power/pfuze100_pmic.h>
Trent Piepho3713c9b2018-04-25 10:06:00 -070015#include <power/pfuze3000_pmic.h>
Peng Fan6f4f6d22015-08-14 11:36:16 +020016
Peng Fan6f4f6d22015-08-14 11:36:16 +020017static const struct pmic_child_info pmic_children_info[] = {
18 /* sw[x], swbst */
19 { .prefix = "s", .driver = PFUZE100_REGULATOR_DRIVER },
20 /* vgen[x], vsnvs, vcc, v33, vcc_sd */
21 { .prefix = "v", .driver = PFUZE100_REGULATOR_DRIVER },
22 { },
23};
24
25static int pfuze100_reg_count(struct udevice *dev)
26{
Trent Piepho3713c9b2018-04-25 10:06:00 -070027 return dev->driver_data == PFUZE3000 ? PFUZE3000_NUM_OF_REGS : PFUZE100_NUM_OF_REGS;
Peng Fan6f4f6d22015-08-14 11:36:16 +020028}
29
30static int pfuze100_write(struct udevice *dev, uint reg, const uint8_t *buff,
31 int len)
32{
33 if (dm_i2c_write(dev, reg, buff, len)) {
Simon Glass73126ac2018-11-18 08:14:28 -070034 pr_err("write error to device: %p register: %#x!\n", dev, reg);
Peng Fan6f4f6d22015-08-14 11:36:16 +020035 return -EIO;
36 }
37
38 return 0;
39}
40
41static int pfuze100_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
42{
43 if (dm_i2c_read(dev, reg, buff, len)) {
Simon Glass73126ac2018-11-18 08:14:28 -070044 pr_err("read error from device: %p register: %#x!\n", dev, reg);
Peng Fan6f4f6d22015-08-14 11:36:16 +020045 return -EIO;
46 }
47
48 return 0;
49}
50
51static int pfuze100_bind(struct udevice *dev)
52{
Simon Glass2c2d2c22017-05-18 20:09:32 -060053 ofnode regulators_node;
Peng Fan6f4f6d22015-08-14 11:36:16 +020054 int children;
Peng Fan6f4f6d22015-08-14 11:36:16 +020055
Simon Glass2c2d2c22017-05-18 20:09:32 -060056 regulators_node = dev_read_subnode(dev, "regulators");
57 if (!ofnode_valid(regulators_node)) {
Simon Glass73126ac2018-11-18 08:14:28 -070058 debug("%s: %s regulators subnode not found!\n", __func__,
Peng Fan6f4f6d22015-08-14 11:36:16 +020059 dev->name);
60 return -ENXIO;
61 }
62
63 debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
64
65 children = pmic_bind_children(dev, regulators_node, pmic_children_info);
66 if (!children)
67 debug("%s: %s - no child found\n", __func__, dev->name);
68
69 /* Always return success for this device */
70 return 0;
71}
72
73static struct dm_pmic_ops pfuze100_ops = {
74 .reg_count = pfuze100_reg_count,
75 .read = pfuze100_read,
76 .write = pfuze100_write,
77};
78
79static const struct udevice_id pfuze100_ids[] = {
80 { .compatible = "fsl,pfuze100", .data = PFUZE100, },
81 { .compatible = "fsl,pfuze200", .data = PFUZE200, },
82 { .compatible = "fsl,pfuze3000", .data = PFUZE3000, },
83 { }
84};
85
86U_BOOT_DRIVER(pmic_pfuze100) = {
87 .name = "pfuze100 pmic",
88 .id = UCLASS_PMIC,
89 .of_match = pfuze100_ids,
90 .bind = pfuze100_bind,
91 .ops = &pfuze100_ops,
92};