// SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2016, NVIDIA CORPORATION. */ #include <common.h> #include <dm.h> #include <power-domain.h> #include <power-domain-uclass.h> static inline struct power_domain_ops *power_domain_dev_ops(struct udevice *dev) { return (struct power_domain_ops *)dev->driver->ops; } static int power_domain_of_xlate_default(struct power_domain *power_domain, struct ofnode_phandle_args *args) { debug("%s(power_domain=%p)\n", __func__, power_domain); if (args->args_count != 1) { debug("Invalid args_count: %d\n", args->args_count); return -EINVAL; } power_domain->id = args->args[0]; return 0; } int power_domain_get(struct udevice *dev, struct power_domain *power_domain) { struct ofnode_phandle_args args; int ret; struct udevice *dev_power_domain; struct power_domain_ops *ops; debug("%s(dev=%p, power_domain=%p)\n", __func__, dev, power_domain); ret = dev_read_phandle_with_args(dev, "power-domains", "#power-domain-cells", 0, 0, &args); if (ret) { debug("%s: dev_read_phandle_with_args failed: %d\n", __func__, ret); return ret; } ret = uclass_get_device_by_ofnode(UCLASS_POWER_DOMAIN, args.node, &dev_power_domain); if (ret) { debug("%s: uclass_get_device_by_ofnode failed: %d\n", __func__, ret); return ret; } ops = power_domain_dev_ops(dev_power_domain); power_domain->dev = dev_power_domain; if (ops->of_xlate) ret = ops->of_xlate(power_domain, &args); else ret = power_domain_of_xlate_default(power_domain, &args); if (ret) { debug("of_xlate() failed: %d\n", ret); return ret; } ret = ops->request(power_domain); if (ret) { debug("ops->request() failed: %d\n", ret); return ret; } return 0; } int power_domain_free(struct power_domain *power_domain) { struct power_domain_ops *ops = power_domain_dev_ops(power_domain->dev); debug("%s(power_domain=%p)\n", __func__, power_domain); return ops->free(power_domain); } int power_domain_on(struct power_domain *power_domain) { struct power_domain_ops *ops = power_domain_dev_ops(power_domain->dev); debug("%s(power_domain=%p)\n", __func__, power_domain); return ops->on(power_domain); } int power_domain_off(struct power_domain *power_domain) { struct power_domain_ops *ops = power_domain_dev_ops(power_domain->dev); debug("%s(power_domain=%p)\n", __func__, power_domain); return ops->off(power_domain); } UCLASS_DRIVER(power_domain) = { .id = UCLASS_POWER_DOMAIN, .name = "power_domain", };