12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788 |
- // 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 <log.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!\n", 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!\n", 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!\n", __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,
- };
|