projects / people / ms / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| cdad57a7 K |
1 | /* |
| 2 | * (C) Copyright 2017 Texas Instruments Incorporated, <www.ti.com> | |
| 3 | * Keerthy <j-keerthy@ti.com> | |
| 4 | * | |
| 5 | * SPDX-License-Identifier: GPL-2.0+ | |
| 6 | */ | |
| 7 | ||
| 8 | #include <common.h> | |
| 9 | #include <fdtdec.h> | |
| 10 | #include <errno.h> | |
| 11 | #include <dm.h> | |
| 12 | #include <i2c.h> | |
| 13 | #include <power/pmic.h> | |
| 14 | #include <power/regulator.h> | |
| 15 | #include <power/lp87565.h> | |
| 16 | #include <dm/device.h> | |
| 17 | ||
| 18 | DECLARE_GLOBAL_DATA_PTR; | |
| 19 | ||
| 20 | static const struct pmic_child_info pmic_children_info[] = { | |
| 21 | { .prefix = "buck", .driver = LP87565_BUCK_DRIVER }, | |
| 22 | { }, | |
| 23 | }; | |
| 24 | ||
| 25 | static int lp87565_write(struct udevice *dev, uint reg, const uint8_t *buff, | |
| 26 | int len) | |
| 27 | { | |
| 28 | int ret; | |
| 29 | ||
| 30 | ret = dm_i2c_write(dev, reg, buff, len); | |
| 31 | if (ret) | |
| 9b643e31 | 32 | pr_err("write error to device: %p register: %#x!", dev, reg); |
| cdad57a7 K |
33 | |
| 34 | return ret; | |
| 35 | } | |
| 36 | ||
| 37 | static int lp87565_read(struct udevice *dev, uint reg, uint8_t *buff, int len) | |
| 38 | { | |
| 39 | int ret; | |
| 40 | ||
| 41 | ret = dm_i2c_read(dev, reg, buff, len); | |
| 42 | if (ret) | |
| 9b643e31 | 43 | pr_err("read error from device: %p register: %#x!", dev, reg); |
| cdad57a7 K |
44 | |
| 45 | return ret; | |
| 46 | } | |
| 47 | ||
| 48 | static int lp87565_bind(struct udevice *dev) | |
| 49 | { | |
| 50 | ofnode regulators_node; | |
| 51 | int children; | |
| 52 | ||
| 53 | regulators_node = dev_read_subnode(dev, "regulators"); | |
| 54 | if (!ofnode_valid(regulators_node)) { | |
| 55 | debug("%s: %s regulators subnode not found!", __func__, | |
| 56 | dev->name); | |
| 57 | return -ENXIO; | |
| 58 | } | |
| 59 | ||
| 60 | debug("%s: '%s' - found regulators subnode\n", __func__, dev->name); | |
| 61 | ||
| 62 | children = pmic_bind_children(dev, regulators_node, pmic_children_info); | |
| 63 | if (!children) | |
| 64 | printf("%s: %s - no child found\n", __func__, dev->name); | |
| 65 | ||
| 66 | /* Always return success for this device */ | |
| 67 | return 0; | |
| 68 | } | |
| 69 | ||
| 70 | static struct dm_pmic_ops lp87565_ops = { | |
| 71 | .read = lp87565_read, | |
| 72 | .write = lp87565_write, | |
| 73 | }; | |
| 74 | ||
| 75 | static const struct udevice_id lp87565_ids[] = { | |
| 76 | { .compatible = "ti,lp87565", .data = LP87565 }, | |
| 77 | { .compatible = "ti,lp87565-q1", .data = LP87565_Q1 }, | |
| 78 | { } | |
| 79 | }; | |
| 80 | ||
| 81 | U_BOOT_DRIVER(pmic_lp87565) = { | |
| 82 | .name = "lp87565_pmic", | |
| 83 | .id = UCLASS_PMIC, | |
| 84 | .of_match = lp87565_ids, | |
| 85 | .bind = lp87565_bind, | |
| 86 | .ops = &lp87565_ops, | |
| 87 | }; |