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f14c4f14 MD |
1 | /* |
2 | * arch/arm/mach-shmobile/pm_runtime.c | |
3 | * | |
4 | * Runtime PM support code for SuperH Mobile ARM | |
5 | * | |
6 | * Copyright (C) 2009-2010 Magnus Damm | |
7 | * | |
8 | * This file is subject to the terms and conditions of the GNU General Public | |
9 | * License. See the file "COPYING" in the main directory of this archive | |
10 | * for more details. | |
11 | */ | |
12 | ||
13 | #include <linux/init.h> | |
14 | #include <linux/kernel.h> | |
15 | #include <linux/io.h> | |
16 | #include <linux/pm_runtime.h> | |
79620414 | 17 | #include <linux/pm_domain.h> |
b5e8d269 | 18 | #include <linux/pm_clock.h> |
f14c4f14 MD |
19 | #include <linux/platform_device.h> |
20 | #include <linux/clk.h> | |
21 | #include <linux/sh_clk.h> | |
22 | #include <linux/bitmap.h> | |
1d2b71f6 | 23 | #include <linux/slab.h> |
f14c4f14 MD |
24 | |
25 | #ifdef CONFIG_PM_RUNTIME | |
f14c4f14 | 26 | |
38ade3a1 | 27 | static int default_platform_runtime_idle(struct device *dev) |
f14c4f14 MD |
28 | { |
29 | /* suspend synchronously to disable clocks immediately */ | |
30 | return pm_runtime_suspend(dev); | |
31 | } | |
32 | ||
564b905a | 33 | static struct dev_pm_domain default_pm_domain = { |
38ade3a1 | 34 | .ops = { |
3d5c3036 RW |
35 | .runtime_suspend = pm_clk_suspend, |
36 | .runtime_resume = pm_clk_resume, | |
38ade3a1 RW |
37 | .runtime_idle = default_platform_runtime_idle, |
38 | USE_PLATFORM_PM_SLEEP_OPS | |
39 | }, | |
40 | }; | |
41 | ||
564b905a | 42 | #define DEFAULT_PM_DOMAIN_PTR (&default_pm_domain) |
1d2b71f6 | 43 | |
85eb8c8d | 44 | #else |
f14c4f14 | 45 | |
564b905a | 46 | #define DEFAULT_PM_DOMAIN_PTR NULL |
f14c4f14 MD |
47 | |
48 | #endif /* CONFIG_PM_RUNTIME */ | |
49 | ||
85eb8c8d | 50 | static struct pm_clk_notifier_block platform_bus_notifier = { |
564b905a | 51 | .pm_domain = DEFAULT_PM_DOMAIN_PTR, |
85eb8c8d | 52 | .con_ids = { NULL, }, |
f14c4f14 MD |
53 | }; |
54 | ||
55 | static int __init sh_pm_runtime_init(void) | |
56 | { | |
3d5c3036 | 57 | pm_clk_add_notifier(&platform_bus_type, &platform_bus_notifier); |
f14c4f14 MD |
58 | return 0; |
59 | } | |
60 | core_initcall(sh_pm_runtime_init); | |
999a4d2a | 61 | |
999a4d2a MD |
62 | static int __init sh_pm_runtime_late_init(void) |
63 | { | |
79620414 | 64 | pm_genpd_poweroff_unused(); |
999a4d2a MD |
65 | return 0; |
66 | } | |
67 | late_initcall(sh_pm_runtime_late_init); |