Magnus Damm | f14c4f1 | 2010-07-27 08:14:35 +0000 | [diff] [blame] | 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> |
Rafael J. Wysocki | 7962041 | 2011-07-13 12:32:07 +0200 | [diff] [blame] | 17 | #include <linux/pm_domain.h> |
Rafael J. Wysocki | b5e8d26 | 2011-08-25 15:34:19 +0200 | [diff] [blame^] | 18 | #include <linux/pm_clock.h> |
Magnus Damm | f14c4f1 | 2010-07-27 08:14:35 +0000 | [diff] [blame] | 19 | #include <linux/platform_device.h> |
| 20 | #include <linux/clk.h> |
| 21 | #include <linux/sh_clk.h> |
| 22 | #include <linux/bitmap.h> |
Rafael J. Wysocki | 1d2b71f | 2011-04-29 00:36:53 +0200 | [diff] [blame] | 23 | #include <linux/slab.h> |
Magnus Damm | f14c4f1 | 2010-07-27 08:14:35 +0000 | [diff] [blame] | 24 | |
| 25 | #ifdef CONFIG_PM_RUNTIME |
Magnus Damm | f14c4f1 | 2010-07-27 08:14:35 +0000 | [diff] [blame] | 26 | |
Rafael J. Wysocki | 38ade3a | 2011-04-29 00:36:21 +0200 | [diff] [blame] | 27 | static int default_platform_runtime_idle(struct device *dev) |
Magnus Damm | f14c4f1 | 2010-07-27 08:14:35 +0000 | [diff] [blame] | 28 | { |
| 29 | /* suspend synchronously to disable clocks immediately */ |
| 30 | return pm_runtime_suspend(dev); |
| 31 | } |
| 32 | |
Rafael J. Wysocki | 564b905 | 2011-06-23 01:52:55 +0200 | [diff] [blame] | 33 | static struct dev_pm_domain default_pm_domain = { |
Rafael J. Wysocki | 38ade3a | 2011-04-29 00:36:21 +0200 | [diff] [blame] | 34 | .ops = { |
Rafael J. Wysocki | 3d5c303 | 2011-07-01 22:13:44 +0200 | [diff] [blame] | 35 | .runtime_suspend = pm_clk_suspend, |
| 36 | .runtime_resume = pm_clk_resume, |
Rafael J. Wysocki | 38ade3a | 2011-04-29 00:36:21 +0200 | [diff] [blame] | 37 | .runtime_idle = default_platform_runtime_idle, |
| 38 | USE_PLATFORM_PM_SLEEP_OPS |
| 39 | }, |
| 40 | }; |
| 41 | |
Rafael J. Wysocki | 564b905 | 2011-06-23 01:52:55 +0200 | [diff] [blame] | 42 | #define DEFAULT_PM_DOMAIN_PTR (&default_pm_domain) |
Magnus Damm | f14c4f1 | 2010-07-27 08:14:35 +0000 | [diff] [blame] | 43 | |
Rafael J. Wysocki | 85eb8c8 | 2011-04-30 00:25:44 +0200 | [diff] [blame] | 44 | #else |
Magnus Damm | f14c4f1 | 2010-07-27 08:14:35 +0000 | [diff] [blame] | 45 | |
Rafael J. Wysocki | 564b905 | 2011-06-23 01:52:55 +0200 | [diff] [blame] | 46 | #define DEFAULT_PM_DOMAIN_PTR NULL |
Magnus Damm | f14c4f1 | 2010-07-27 08:14:35 +0000 | [diff] [blame] | 47 | |
| 48 | #endif /* CONFIG_PM_RUNTIME */ |
| 49 | |
Rafael J. Wysocki | 85eb8c8 | 2011-04-30 00:25:44 +0200 | [diff] [blame] | 50 | static struct pm_clk_notifier_block platform_bus_notifier = { |
Rafael J. Wysocki | 564b905 | 2011-06-23 01:52:55 +0200 | [diff] [blame] | 51 | .pm_domain = DEFAULT_PM_DOMAIN_PTR, |
Rafael J. Wysocki | 85eb8c8 | 2011-04-30 00:25:44 +0200 | [diff] [blame] | 52 | .con_ids = { NULL, }, |
Magnus Damm | f14c4f1 | 2010-07-27 08:14:35 +0000 | [diff] [blame] | 53 | }; |
| 54 | |
| 55 | static int __init sh_pm_runtime_init(void) |
| 56 | { |
Rafael J. Wysocki | 3d5c303 | 2011-07-01 22:13:44 +0200 | [diff] [blame] | 57 | pm_clk_add_notifier(&platform_bus_type, &platform_bus_notifier); |
Magnus Damm | f14c4f1 | 2010-07-27 08:14:35 +0000 | [diff] [blame] | 58 | return 0; |
| 59 | } |
| 60 | core_initcall(sh_pm_runtime_init); |
Magnus Damm | 999a4d2 | 2011-07-10 10:38:34 +0200 | [diff] [blame] | 61 | |
Magnus Damm | 999a4d2 | 2011-07-10 10:38:34 +0200 | [diff] [blame] | 62 | static int __init sh_pm_runtime_late_init(void) |
| 63 | { |
Rafael J. Wysocki | 7962041 | 2011-07-13 12:32:07 +0200 | [diff] [blame] | 64 | pm_genpd_poweroff_unused(); |
Magnus Damm | 999a4d2 | 2011-07-10 10:38:34 +0200 | [diff] [blame] | 65 | return 0; |
| 66 | } |
| 67 | late_initcall(sh_pm_runtime_late_init); |