2 * Copyright (c) 2016, NVIDIA CORPORATION.
4 * SPDX-License-Identifier: GPL-2.0
10 #include <power-domain.h>
11 #include <power-domain-uclass.h>
13 DECLARE_GLOBAL_DATA_PTR;
15 static inline struct power_domain_ops *power_domain_dev_ops(struct udevice *dev)
17 return (struct power_domain_ops *)dev->driver->ops;
20 static int power_domain_of_xlate_default(struct power_domain *power_domain,
21 struct fdtdec_phandle_args *args)
23 debug("%s(power_domain=%p)\n", __func__, power_domain);
25 if (args->args_count != 1) {
26 debug("Invalid args_count: %d\n", args->args_count);
30 power_domain->id = args->args[0];
35 int power_domain_get(struct udevice *dev, struct power_domain *power_domain)
37 struct fdtdec_phandle_args args;
39 struct udevice *dev_power_domain;
40 struct power_domain_ops *ops;
42 debug("%s(dev=%p, power_domain=%p)\n", __func__, dev, power_domain);
44 ret = fdtdec_parse_phandle_with_args(gd->fdt_blob, dev_of_offset(dev),
46 "#power-domain-cells", 0, 0,
49 debug("%s: fdtdec_parse_phandle_with_args failed: %d\n",
54 ret = uclass_get_device_by_of_offset(UCLASS_POWER_DOMAIN, args.node,
57 debug("%s: uclass_get_device_by_of_offset failed: %d\n",
61 ops = power_domain_dev_ops(dev_power_domain);
63 power_domain->dev = dev_power_domain;
65 ret = ops->of_xlate(power_domain, &args);
67 ret = power_domain_of_xlate_default(power_domain, &args);
69 debug("of_xlate() failed: %d\n", ret);
73 ret = ops->request(power_domain);
75 debug("ops->request() failed: %d\n", ret);
82 int power_domain_free(struct power_domain *power_domain)
84 struct power_domain_ops *ops = power_domain_dev_ops(power_domain->dev);
86 debug("%s(power_domain=%p)\n", __func__, power_domain);
88 return ops->free(power_domain);
91 int power_domain_on(struct power_domain *power_domain)
93 struct power_domain_ops *ops = power_domain_dev_ops(power_domain->dev);
95 debug("%s(power_domain=%p)\n", __func__, power_domain);
97 return ops->on(power_domain);
100 int power_domain_off(struct power_domain *power_domain)
102 struct power_domain_ops *ops = power_domain_dev_ops(power_domain->dev);
104 debug("%s(power_domain=%p)\n", __func__, power_domain);
106 return ops->off(power_domain);
109 UCLASS_DRIVER(power_domain) = {
110 .id = UCLASS_POWER_DOMAIN,
111 .name = "power_domain",