// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2014-2015 Samsung Electronics * Przemyslaw Marczak <p.marczak@samsung.com> */ #include <common.h> #include <fdtdec.h> #include <errno.h> #include <dm.h> #include <i2c.h> #include <power/pmic.h> #include <power/regulator.h> #include <power/max77686_pmic.h> static const struct pmic_child_info pmic_children_info[] = { { .prefix = "LDO", .driver = MAX77686_LDO_DRIVER }, { .prefix = "BUCK", .driver = MAX77686_BUCK_DRIVER }, { }, }; static int max77686_reg_count(struct udevice *dev) { return MAX77686_NUM_OF_REGS; } static int max77686_write(struct udevice *dev, uint reg, const uint8_t *buff, int len) { if (dm_i2c_write(dev, reg, buff, len)) { pr_err("write error to device: %p register: %#x!", dev, reg); return -EIO; } return 0; } static int max77686_read(struct udevice *dev, uint reg, uint8_t *buff, int len) { if (dm_i2c_read(dev, reg, buff, len)) { pr_err("read error from device: %p register: %#x!", dev, reg); return -EIO; } return 0; } static int max77686_bind(struct udevice *dev) { ofnode regulators_node; int children; regulators_node = dev_read_subnode(dev, "voltage-regulators"); if (!ofnode_valid(regulators_node)) { debug("%s: %s regulators subnode not found!", __func__, dev->name); return -ENXIO; } debug("%s: '%s' - found regulators subnode\n", __func__, dev->name); children = pmic_bind_children(dev, regulators_node, pmic_children_info); if (!children) debug("%s: %s - no child found\n", __func__, dev->name); /* Always return success for this device */ return 0; } static struct dm_pmic_ops max77686_ops = { .reg_count = max77686_reg_count, .read = max77686_read, .write = max77686_write, }; static const struct udevice_id max77686_ids[] = { { .compatible = "maxim,max77686" }, { } }; U_BOOT_DRIVER(pmic_max77686) = { .name = "max77686_pmic", .id = UCLASS_PMIC, .of_match = max77686_ids, .bind = max77686_bind, .ops = &max77686_ops, };