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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright 2019 NXP
- */
- #include <common.h>
- #include <fdtdec.h>
- #include <errno.h>
- #include <dm.h>
- #include <i2c.h>
- #include <log.h>
- #include <asm/global_data.h>
- #include <power/pmic.h>
- #include <power/regulator.h>
- #include <power/pca9450.h>
- DECLARE_GLOBAL_DATA_PTR;
- static const struct pmic_child_info pmic_children_info[] = {
- /* buck */
- { .prefix = "b", .driver = PCA9450_REGULATOR_DRIVER},
- /* ldo */
- { .prefix = "l", .driver = PCA9450_REGULATOR_DRIVER},
- { },
- };
- static int pca9450_reg_count(struct udevice *dev)
- {
- return PCA9450_REG_NUM;
- }
- static int pca9450_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 pca9450_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 pca9450_bind(struct udevice *dev)
- {
- int children;
- ofnode regulators_node;
- regulators_node = dev_read_subnode(dev, "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 pca9450_ops = {
- .reg_count = pca9450_reg_count,
- .read = pca9450_read,
- .write = pca9450_write,
- };
- static const struct udevice_id pca9450_ids[] = {
- { .compatible = "nxp,pca9450a", .data = 0x25, },
- { .compatible = "nxp,pca9450b", .data = 0x25, },
- { }
- };
- U_BOOT_DRIVER(pmic_pca9450) = {
- .name = "pca9450 pmic",
- .id = UCLASS_PMIC,
- .of_match = pca9450_ids,
- .bind = pca9450_bind,
- .ops = &pca9450_ops,
- };
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