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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> | |
17 | #include <linux/platform_device.h> | |
18 | #include <linux/clk.h> | |
19 | #include <linux/sh_clk.h> | |
20 | #include <linux/bitmap.h> | |
1d2b71f6 | 21 | #include <linux/slab.h> |
f14c4f14 MD |
22 | |
23 | #ifdef CONFIG_PM_RUNTIME | |
f14c4f14 | 24 | |
38ade3a1 | 25 | static int default_platform_runtime_idle(struct device *dev) |
f14c4f14 MD |
26 | { |
27 | /* suspend synchronously to disable clocks immediately */ | |
28 | return pm_runtime_suspend(dev); | |
29 | } | |
30 | ||
564b905a | 31 | static struct dev_pm_domain default_pm_domain = { |
38ade3a1 | 32 | .ops = { |
85eb8c8d RW |
33 | .runtime_suspend = pm_runtime_clk_suspend, |
34 | .runtime_resume = pm_runtime_clk_resume, | |
38ade3a1 RW |
35 | .runtime_idle = default_platform_runtime_idle, |
36 | USE_PLATFORM_PM_SLEEP_OPS | |
37 | }, | |
38 | }; | |
39 | ||
564b905a | 40 | #define DEFAULT_PM_DOMAIN_PTR (&default_pm_domain) |
1d2b71f6 | 41 | |
85eb8c8d | 42 | #else |
f14c4f14 | 43 | |
564b905a | 44 | #define DEFAULT_PM_DOMAIN_PTR NULL |
f14c4f14 MD |
45 | |
46 | #endif /* CONFIG_PM_RUNTIME */ | |
47 | ||
85eb8c8d | 48 | static struct pm_clk_notifier_block platform_bus_notifier = { |
564b905a | 49 | .pm_domain = DEFAULT_PM_DOMAIN_PTR, |
85eb8c8d | 50 | .con_ids = { NULL, }, |
f14c4f14 MD |
51 | }; |
52 | ||
53 | static int __init sh_pm_runtime_init(void) | |
54 | { | |
85eb8c8d | 55 | pm_runtime_clk_add_notifier(&platform_bus_type, &platform_bus_notifier); |
f14c4f14 MD |
56 | return 0; |
57 | } | |
58 | core_initcall(sh_pm_runtime_init); |