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 DECLARE_GLOBAL_DATA_PTR;
14 static inline struct power_domain_ops *power_domain_dev_ops(struct udevice *dev)
16 return (struct power_domain_ops *)dev->driver->ops;
19 static int power_domain_of_xlate_default(struct power_domain *power_domain,
20 struct ofnode_phandle_args *args)
22 debug("%s(power_domain=%p)\n", __func__, power_domain);
24 if (args->args_count != 1) {
25 debug("Invalid args_count: %d\n", args->args_count);
29 power_domain->id = args->args[0];
34 int power_domain_get(struct udevice *dev, struct power_domain *power_domain)
36 struct ofnode_phandle_args args;
38 struct udevice *dev_power_domain;
39 struct power_domain_ops *ops;
41 debug("%s(dev=%p, power_domain=%p)\n", __func__, dev, power_domain);
43 ret = dev_read_phandle_with_args(dev, "power-domains",
44 "#power-domain-cells", 0, 0, &args);
46 debug("%s: dev_read_phandle_with_args failed: %d\n",
51 ret = uclass_get_device_by_ofnode(UCLASS_POWER_DOMAIN, args.node,
54 debug("%s: uclass_get_device_by_ofnode failed: %d\n",
58 ops = power_domain_dev_ops(dev_power_domain);
60 power_domain->dev = dev_power_domain;
62 ret = ops->of_xlate(power_domain, &args);
64 ret = power_domain_of_xlate_default(power_domain, &args);
66 debug("of_xlate() failed: %d\n", ret);
70 ret = ops->request(power_domain);
72 debug("ops->request() failed: %d\n", ret);
79 int power_domain_free(struct power_domain *power_domain)
81 struct power_domain_ops *ops = power_domain_dev_ops(power_domain->dev);
83 debug("%s(power_domain=%p)\n", __func__, power_domain);
85 return ops->free(power_domain);
88 int power_domain_on(struct power_domain *power_domain)
90 struct power_domain_ops *ops = power_domain_dev_ops(power_domain->dev);
92 debug("%s(power_domain=%p)\n", __func__, power_domain);
94 return ops->on(power_domain);
97 int power_domain_off(struct power_domain *power_domain)
99 struct power_domain_ops *ops = power_domain_dev_ops(power_domain->dev);
101 debug("%s(power_domain=%p)\n", __func__, power_domain);
103 return ops->off(power_domain);
106 UCLASS_DRIVER(power_domain) = {
107 .id = UCLASS_POWER_DOMAIN,
108 .name = "power_domain",