2 * Copyright (c) 2016, NVIDIA CORPORATION.
4 * SPDX-License-Identifier: GPL-2.0
9 #include <power-domain.h>
10 #include <power-domain-uclass.h>
12 static inline struct power_domain_ops *power_domain_dev_ops(struct udevice *dev)
14 return (struct power_domain_ops *)dev->driver->ops;
17 static int power_domain_of_xlate_default(struct power_domain *power_domain,
18 struct ofnode_phandle_args *args)
20 debug("%s(power_domain=%p)\n", __func__, power_domain);
22 if (args->args_count != 1) {
23 debug("Invalid args_count: %d\n", args->args_count);
27 power_domain->id = args->args[0];
32 int power_domain_get(struct udevice *dev, struct power_domain *power_domain)
34 struct ofnode_phandle_args args;
36 struct udevice *dev_power_domain;
37 struct power_domain_ops *ops;
39 debug("%s(dev=%p, power_domain=%p)\n", __func__, dev, power_domain);
41 ret = dev_read_phandle_with_args(dev, "power-domains",
42 "#power-domain-cells", 0, 0, &args);
44 debug("%s: dev_read_phandle_with_args failed: %d\n",
49 ret = uclass_get_device_by_ofnode(UCLASS_POWER_DOMAIN, args.node,
52 debug("%s: uclass_get_device_by_ofnode failed: %d\n",
56 ops = power_domain_dev_ops(dev_power_domain);
58 power_domain->dev = dev_power_domain;
60 ret = ops->of_xlate(power_domain, &args);
62 ret = power_domain_of_xlate_default(power_domain, &args);
64 debug("of_xlate() failed: %d\n", ret);
68 ret = ops->request(power_domain);
70 debug("ops->request() failed: %d\n", ret);
77 int power_domain_free(struct power_domain *power_domain)
79 struct power_domain_ops *ops = power_domain_dev_ops(power_domain->dev);
81 debug("%s(power_domain=%p)\n", __func__, power_domain);
83 return ops->free(power_domain);
86 int power_domain_on(struct power_domain *power_domain)
88 struct power_domain_ops *ops = power_domain_dev_ops(power_domain->dev);
90 debug("%s(power_domain=%p)\n", __func__, power_domain);
92 return ops->on(power_domain);
95 int power_domain_off(struct power_domain *power_domain)
97 struct power_domain_ops *ops = power_domain_dev_ops(power_domain->dev);
99 debug("%s(power_domain=%p)\n", __func__, power_domain);
101 return ops->off(power_domain);
104 UCLASS_DRIVER(power_domain) = {
105 .id = UCLASS_POWER_DOMAIN,
106 .name = "power_domain",