SPDX: Convert all of our single license tags to Linux Kernel style
[platform/kernel/u-boot.git] / drivers / cpu / cpu-uclass.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (C) 2015 Google, Inc
4  * Written by Simon Glass <sjg@chromium.org>
5  */
6
7 #include <common.h>
8 #include <cpu.h>
9 #include <dm.h>
10 #include <errno.h>
11 #include <dm/lists.h>
12 #include <dm/root.h>
13
14 int cpu_get_desc(struct udevice *dev, char *buf, int size)
15 {
16         struct cpu_ops *ops = cpu_get_ops(dev);
17
18         if (!ops->get_desc)
19                 return -ENOSYS;
20
21         return ops->get_desc(dev, buf, size);
22 }
23
24 int cpu_get_info(struct udevice *dev, struct cpu_info *info)
25 {
26         struct cpu_ops *ops = cpu_get_ops(dev);
27
28         if (!ops->get_info)
29                 return -ENOSYS;
30
31         return ops->get_info(dev, info);
32 }
33
34 int cpu_get_count(struct udevice *dev)
35 {
36         struct cpu_ops *ops = cpu_get_ops(dev);
37
38         if (!ops->get_count)
39                 return -ENOSYS;
40
41         return ops->get_count(dev);
42 }
43
44 int cpu_get_vendor(struct udevice *dev, char *buf, int size)
45 {
46         struct cpu_ops *ops = cpu_get_ops(dev);
47
48         if (!ops->get_vendor)
49                 return -ENOSYS;
50
51         return ops->get_vendor(dev, buf, size);
52 }
53
54 U_BOOT_DRIVER(cpu_bus) = {
55         .name   = "cpu_bus",
56         .id     = UCLASS_SIMPLE_BUS,
57         .per_child_platdata_auto_alloc_size = sizeof(struct cpu_platdata),
58 };
59
60 static int uclass_cpu_init(struct uclass *uc)
61 {
62         struct udevice *dev;
63         ofnode node;
64         int ret;
65
66         node = ofnode_path("/cpus");
67         if (!ofnode_valid(node))
68                 return 0;
69
70         ret = device_bind_driver_to_node(dm_root(), "cpu_bus", "cpus", node,
71                                          &dev);
72
73         return ret;
74 }
75
76 UCLASS_DRIVER(cpu) = {
77         .id             = UCLASS_CPU,
78         .name           = "cpu",
79         .flags          = DM_UC_FLAG_SEQ_ALIAS,
80         .init           = uclass_cpu_init,
81 };