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);