projects / thirdparty / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 33621d24 K |
2 | /* |
| 3 | * (C) Copyright 2016 Texas Instruments Incorporated, <www.ti.com> | |
| 4 | * Keerthy <j-keerthy@ti.com> | |
| 33621d24 K |
5 | */ |
| 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/palmas.h> | |
| 15 | #include <dm/device.h> | |
| 16 | ||
| 33621d24 K |
17 | static const struct pmic_child_info pmic_children_info[] = { |
| 18 | { .prefix = "ldo", .driver = PALMAS_LDO_DRIVER }, | |
| 19 | { .prefix = "smps", .driver = PALMAS_SMPS_DRIVER }, | |
| 20 | { }, | |
| 21 | }; | |
| 22 | ||
| 23 | static int palmas_write(struct udevice *dev, uint reg, const uint8_t *buff, | |
| 24 | int len) | |
| 25 | { | |
| 26 | if (dm_i2c_write(dev, reg, buff, len)) { | |
| 9b643e31 | 27 | pr_err("write error to device: %p register: %#x!", dev, reg); |
| 33621d24 K |
28 | return -EIO; |
| 29 | } | |
| 30 | ||
| 31 | return 0; | |
| 32 | } | |
| 33 | ||
| 34 | static int palmas_read(struct udevice *dev, uint reg, uint8_t *buff, int len) | |
| 35 | { | |
| 36 | if (dm_i2c_read(dev, reg, buff, len)) { | |
| 9b643e31 | 37 | pr_err("read error from device: %p register: %#x!", dev, reg); |
| 33621d24 K |
38 | return -EIO; |
| 39 | } | |
| 40 | ||
| 41 | return 0; | |
| 42 | } | |
| 43 | ||
| 44 | static int palmas_bind(struct udevice *dev) | |
| 45 | { | |
| 7a869e6c SG |
46 | ofnode pmic_node = ofnode_null(), regulators_node; |
| 47 | ofnode subnode; | |
| 33621d24 | 48 | int children; |
| 33621d24 | 49 | |
| 7a869e6c | 50 | dev_for_each_subnode(subnode, dev) { |
| 33621d24 K |
51 | const char *name; |
| 52 | char *temp; | |
| 53 | ||
| 7a869e6c | 54 | name = ofnode_get_name(subnode); |
| 33621d24 K |
55 | temp = strstr(name, "pmic"); |
| 56 | if (temp) { | |
| 57 | pmic_node = subnode; | |
| 58 | break; | |
| 59 | } | |
| 60 | } | |
| 61 | ||
| 7a869e6c | 62 | if (!ofnode_valid(pmic_node)) { |
| 33621d24 K |
63 | debug("%s: %s pmic subnode not found!", __func__, dev->name); |
| 64 | return -ENXIO; | |
| 65 | } | |
| 66 | ||
| 7a869e6c | 67 | regulators_node = ofnode_find_subnode(pmic_node, "regulators"); |
| 33621d24 | 68 | |
| 7a869e6c | 69 | if (!ofnode_valid(regulators_node)) { |
| 33621d24 K |
70 | debug("%s: %s reg subnode not found!", __func__, dev->name); |
| 71 | return -ENXIO; | |
| 72 | } | |
| 73 | ||
| 74 | children = pmic_bind_children(dev, regulators_node, pmic_children_info); | |
| 75 | if (!children) | |
| 76 | debug("%s: %s - no child found\n", __func__, dev->name); | |
| 77 | ||
| 78 | /* Always return success for this device */ | |
| 79 | return 0; | |
| 80 | } | |
| 81 | ||
| 82 | static struct dm_pmic_ops palmas_ops = { | |
| 83 | .read = palmas_read, | |
| 84 | .write = palmas_write, | |
| 85 | }; | |
| 86 | ||
| 87 | static const struct udevice_id palmas_ids[] = { | |
| 88 | { .compatible = "ti,tps659038", .data = TPS659038 }, | |
| 89 | { .compatible = "ti,tps65917" , .data = TPS65917 }, | |
| 90 | { } | |
| 91 | }; | |
| 92 | ||
| 93 | U_BOOT_DRIVER(pmic_palmas) = { | |
| 94 | .name = "palmas_pmic", | |
| 95 | .id = UCLASS_PMIC, | |
| 96 | .of_match = palmas_ids, | |
| 97 | .bind = palmas_bind, | |
| 98 | .ops = &palmas_ops, | |
| 99 | }; |