/* * Copyright (C) 2015 Google, Inc * * SPDX-License-Identifier: GPL-2.0+ */ #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/s5m8767.h> DECLARE_GLOBAL_DATA_PTR; static const struct pmic_child_info pmic_children_info[] = { { .prefix = "LDO", .driver = S5M8767_LDO_DRIVER }, { .prefix = "BUCK", .driver = S5M8767_BUCK_DRIVER }, { }, }; static int s5m8767_reg_count(struct udevice *dev) { return S5M8767_NUM_OF_REGS; } static int s5m8767_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 s5m8767_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; } int s5m8767_enable_32khz_cp(struct udevice *dev) { return pmic_clrsetbits(dev, S5M8767_EN32KHZ_CP, 0, 1 << 1); } static int s5m8767_bind(struct udevice *dev) { int children; ofnode node; node = dev_read_subnode(dev, "regulators"); if (!ofnode_valid(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, 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 s5m8767_ops = { .reg_count = s5m8767_reg_count, .read = s5m8767_read, .write = s5m8767_write, }; static const struct udevice_id s5m8767_ids[] = { { .compatible = "samsung,s5m8767-pmic" }, { } }; U_BOOT_DRIVER(pmic_s5m8767) = { .name = "s5m8767_pmic", .id = UCLASS_PMIC, .of_match = s5m8767_ids, .bind = s5m8767_bind, .ops = &s5m8767_ops, };