Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/*
2 * Runtime PM support code
3 *
4 * Copyright (C) 2009-2010 Magnus Damm
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file "COPYING" in the main directory of this archive
8 * for more details.
9 */
10
11#include <linux/init.h>
12#include <linux/kernel.h>
13#include <linux/io.h>
14#include <linux/pm_runtime.h>
15#include <linux/pm_domain.h>
16#include <linux/pm_clock.h>
17#include <linux/platform_device.h>
18#include <linux/clk.h>
19#include <linux/sh_clk.h>
20#include <linux/bitmap.h>
21#include <linux/slab.h>
22
23#ifdef CONFIG_PM_RUNTIME
24
25static int default_platform_runtime_idle(struct device *dev)
26{
27 /* suspend synchronously to disable clocks immediately */
28 return pm_runtime_suspend(dev);
29}
30
31static struct dev_pm_domain default_pm_domain = {
32 .ops = {
33 .runtime_suspend = pm_clk_suspend,
34 .runtime_resume = pm_clk_resume,
35 .runtime_idle = default_platform_runtime_idle,
36 USE_PLATFORM_PM_SLEEP_OPS
37 },
38};
39
40#define DEFAULT_PM_DOMAIN_PTR (&default_pm_domain)
41
42#else
43
44#define DEFAULT_PM_DOMAIN_PTR NULL
45
46#endif /* CONFIG_PM_RUNTIME */
47
48static struct pm_clk_notifier_block platform_bus_notifier = {
49 .pm_domain = DEFAULT_PM_DOMAIN_PTR,
50 .con_ids = { NULL, },
51};
52
53static int __init sh_pm_runtime_init(void)
54{
55 pm_clk_add_notifier(&platform_bus_type, &platform_bus_notifier);
56 return 0;
57}
58core_initcall(sh_pm_runtime_init);
59
60static int __init sh_pm_runtime_late_init(void)
61{
62 pm_genpd_poweroff_unused();
63 return 0;
64}
65late_initcall(sh_pm_runtime_late_init);