1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2016, NVIDIA CORPORATION.
8 #include <power-domain.h>
9 #include <power-domain-uclass.h>
11 static inline struct power_domain_ops *power_domain_dev_ops(struct udevice *dev)
13 return (struct power_domain_ops *)dev->driver->ops;
16 static int power_domain_of_xlate_default(struct power_domain *power_domain,
17 struct ofnode_phandle_args *args)
19 debug("%s(power_domain=%p)\n", __func__, power_domain);
21 if (args->args_count != 1) {
22 debug("Invalid args_count: %d\n", args->args_count);
26 power_domain->id = args->args[0];
31 int power_domain_get(struct udevice *dev, struct power_domain *power_domain)
33 struct ofnode_phandle_args args;
35 struct udevice *dev_power_domain;
36 struct power_domain_ops *ops;
38 debug("%s(dev=%p, power_domain=%p)\n", __func__, dev, power_domain);
40 ret = dev_read_phandle_with_args(dev, "power-domains",
41 "#power-domain-cells", 0, 0, &args);
43 debug("%s: dev_read_phandle_with_args failed: %d\n",
48 ret = uclass_get_device_by_ofnode(UCLASS_POWER_DOMAIN, args.node,
51 debug("%s: uclass_get_device_by_ofnode failed: %d\n",
55 ops = power_domain_dev_ops(dev_power_domain);
57 power_domain->dev = dev_power_domain;
59 ret = ops->of_xlate(power_domain, &args);
61 ret = power_domain_of_xlate_default(power_domain, &args);
63 debug("of_xlate() failed: %d\n", ret);
67 ret = ops->request(power_domain);
69 debug("ops->request() failed: %d\n", ret);
76 int power_domain_free(struct power_domain *power_domain)
78 struct power_domain_ops *ops = power_domain_dev_ops(power_domain->dev);
80 debug("%s(power_domain=%p)\n", __func__, power_domain);
82 return ops->free(power_domain);
85 int power_domain_on(struct power_domain *power_domain)
87 struct power_domain_ops *ops = power_domain_dev_ops(power_domain->dev);
89 debug("%s(power_domain=%p)\n", __func__, power_domain);
91 return ops->on(power_domain);
94 int power_domain_off(struct power_domain *power_domain)
96 struct power_domain_ops *ops = power_domain_dev_ops(power_domain->dev);
98 debug("%s(power_domain=%p)\n", __func__, power_domain);
100 return ops->off(power_domain);
103 UCLASS_DRIVER(power_domain) = {
104 .id = UCLASS_POWER_DOMAIN,
105 .name = "power_domain",