// SPDX-License-Identifier: GPL-2.0+ /* * (C) 2018 Theobroma Systems Design und Consulting GmbH */ #include <common.h> #include <dm.h> #include <dm/device-internal.h> #include <dm/lists.h> #include <i2c.h> #include <power/pmic.h> #include <power/regulator.h> static int pmic_fan53555_reg_count(struct udevice *dev) { return 1; }; static int pmic_fan53555_read(struct udevice *dev, uint reg, u8 *buff, int len) { if (dm_i2c_read(dev, reg, buff, len)) { pr_err("%s: read error for register: %#x!", dev->name, reg); return -EIO; } return 0; } static int pmic_fan53555_write(struct udevice *dev, uint reg, const u8 *buff, int len) { if (dm_i2c_write(dev, reg, buff, len)) { pr_err("%s: write error for register: %#x!", dev->name, reg); return -EIO; } return 0; } static int pmic_fan53555_bind(struct udevice *dev) { /* * The FAN53555 has only a single regulator and therefore doesn't * have a subnode. So we have to rebind a child device (the one * regulator) here. */ const char *regulator_driver_name = "fan53555_regulator"; struct udevice *child; struct driver *drv; debug("%s\n", __func__); drv = lists_driver_lookup_name(regulator_driver_name); if (!drv) { dev_err(dev, "no driver '%s'\n", regulator_driver_name); return -ENOENT; } return device_bind_with_driver_data(dev, drv, "SW", 0, dev_ofnode(dev), &child); }; static struct dm_pmic_ops pmic_fan53555_ops = { .reg_count = pmic_fan53555_reg_count, .read = pmic_fan53555_read, .write = pmic_fan53555_write, }; static const struct udevice_id pmic_fan53555_match[] = { { .compatible = "fcs,fan53555" }, { }, }; U_BOOT_DRIVER(pmic_fan53555) = { .name = "pmic_fan53555", .id = UCLASS_PMIC, .of_match = pmic_fan53555_match, .bind = pmic_fan53555_bind, .ops = &pmic_fan53555_ops, };