Merge tag 'iwlwifi-next-for-kalle-2014-12-30' of https://git.kernel.org/pub/scm/linux...
[cascardo/linux.git] / arch / arm / mach-davinci / pm_domain.c
1 /*
2  * Runtime PM support code for DaVinci
3  *
4  * Author: Kevin Hilman
5  *
6  * Copyright (C) 2012 Texas Instruments, Inc.
7  *
8  * This file is licensed under the terms of the GNU General Public
9  * License version 2. This program is licensed "as is" without any
10  * warranty of any kind, whether express or implied.
11  */
12 #include <linux/init.h>
13 #include <linux/pm_runtime.h>
14 #include <linux/pm_clock.h>
15 #include <linux/platform_device.h>
16
17 #ifdef CONFIG_PM
18 static int davinci_pm_runtime_suspend(struct device *dev)
19 {
20         int ret;
21
22         dev_dbg(dev, "%s\n", __func__);
23
24         ret = pm_generic_runtime_suspend(dev);
25         if (ret)
26                 return ret;
27
28         ret = pm_clk_suspend(dev);
29         if (ret) {
30                 pm_generic_runtime_resume(dev);
31                 return ret;
32         }
33
34         return 0;
35 }
36
37 static int davinci_pm_runtime_resume(struct device *dev)
38 {
39         dev_dbg(dev, "%s\n", __func__);
40
41         pm_clk_resume(dev);
42         return pm_generic_runtime_resume(dev);
43 }
44 #endif
45
46 static struct dev_pm_domain davinci_pm_domain = {
47         .ops = {
48                 SET_RUNTIME_PM_OPS(davinci_pm_runtime_suspend,
49                                    davinci_pm_runtime_resume, NULL)
50                 USE_PLATFORM_PM_SLEEP_OPS
51         },
52 };
53
54 static struct pm_clk_notifier_block platform_bus_notifier = {
55         .pm_domain = &davinci_pm_domain,
56         .con_ids = { "fck", "master", "slave", NULL },
57 };
58
59 static int __init davinci_pm_runtime_init(void)
60 {
61         pm_clk_add_notifier(&platform_bus_type, &platform_bus_notifier);
62
63         return 0;
64 }
65 core_initcall(davinci_pm_runtime_init);