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| Commit | Line | Data |
|---|---|---|
| 151b223b SG |
1 | /* |
| 2 | * Copyright (c) 2015 Google, Inc | |
| 3 | * Written by Simon Glass <sjg@chromium.org> | |
| 4 | * | |
| 5 | * SPDX-License-Identifier: GPL-2.0+ | |
| 6 | */ | |
| 7 | ||
| 8 | #include <common.h> | |
| 9 | #include <dm.h> | |
| 10 | #include <errno.h> | |
| 11 | #include <fdtdec.h> | |
| 12 | #include <i2c.h> | |
| 13 | #include <power/pmic.h> | |
| 14 | #include <power/tps65090.h> | |
| 15 | ||
| 16 | DECLARE_GLOBAL_DATA_PTR; | |
| 17 | ||
| 18 | static const struct pmic_child_info pmic_children_info[] = { | |
| 19 | { .prefix = "fet", .driver = TPS65090_FET_DRIVER }, | |
| 20 | { }, | |
| 21 | }; | |
| 22 | ||
| 23 | static int tps65090_reg_count(struct udevice *dev) | |
| 24 | { | |
| 25 | return TPS65090_NUM_REGS; | |
| 26 | } | |
| 27 | ||
| 28 | static int tps65090_write(struct udevice *dev, uint reg, const uint8_t *buff, | |
| 29 | int len) | |
| 30 | { | |
| 31 | if (dm_i2c_write(dev, reg, buff, len)) { | |
| 32 | error("write error to device: %p register: %#x!", dev, reg); | |
| 33 | return -EIO; | |
| 34 | } | |
| 35 | ||
| 36 | return 0; | |
| 37 | } | |
| 38 | ||
| 39 | static int tps65090_read(struct udevice *dev, uint reg, uint8_t *buff, int len) | |
| 40 | { | |
| 41 | int ret; | |
| 42 | ||
| 43 | ret = dm_i2c_read(dev, reg, buff, len); | |
| 44 | if (ret) { | |
| 45 | error("read error %d from device: %p register: %#x!", ret, dev, | |
| 46 | reg); | |
| 47 | return -EIO; | |
| 48 | } | |
| 49 | ||
| 50 | return 0; | |
| 51 | } | |
| 52 | ||
| 53 | static int tps65090_bind(struct udevice *dev) | |
| 54 | { | |
| 55 | int regulators_node; | |
| 56 | const void *blob = gd->fdt_blob; | |
| 57 | int children; | |
| 58 | ||
| e160f7d4 | 59 | regulators_node = fdt_subnode_offset(blob, dev_of_offset(dev), |
| 151b223b SG |
60 | "regulators"); |
| 61 | if (regulators_node <= 0) { | |
| 62 | debug("%s: %s regulators subnode not found!", __func__, | |
| 63 | dev->name); | |
| 64 | return -ENXIO; | |
| 65 | } | |
| 66 | ||
| 67 | debug("%s: '%s' - found regulators subnode\n", __func__, dev->name); | |
| 68 | ||
| 69 | children = pmic_bind_children(dev, regulators_node, pmic_children_info); | |
| 70 | if (!children) | |
| 71 | debug("%s: %s - no child found\n", __func__, dev->name); | |
| 72 | ||
| 73 | /* Always return success for this device */ | |
| 74 | return 0; | |
| 75 | } | |
| 76 | ||
| 77 | static struct dm_pmic_ops tps65090_ops = { | |
| 78 | .reg_count = tps65090_reg_count, | |
| 79 | .read = tps65090_read, | |
| 80 | .write = tps65090_write, | |
| 81 | }; | |
| 82 | ||
| 83 | static const struct udevice_id tps65090_ids[] = { | |
| 84 | { .compatible = "ti,tps65090" }, | |
| 85 | { } | |
| 86 | }; | |
| 87 | ||
| 88 | U_BOOT_DRIVER(pmic_tps65090) = { | |
| 89 | .name = "tps65090 pmic", | |
| 90 | .id = UCLASS_PMIC, | |
| 91 | .of_match = tps65090_ids, | |
| 92 | .bind = tps65090_bind, | |
| 93 | .ops = &tps65090_ops, | |
| 94 | }; |