diff options
| author | Alex Frid <afrid@nvidia.com> | 2011-03-30 20:31:30 -0700 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2011-11-30 21:42:28 -0800 |
| commit | cb5adc3105f390b7ac569f81ce6bf7197d5953e9 (patch) | |
| tree | 0ee1d73bbd1b4af73e3072a9b51f91d1754f8f9b /arch/arm/mach-tegra/pm.h | |
| parent | c9d858f72439e17ec152664f9164c99878ce4b65 (diff) | |
ARM: tegra: power: Modify auto-hotplug locking
Use cpufreq (cpu DFS) mutex for auto-hotplug (instead of a separate
one) to serialize cpu frequency scaling, hotplug, and CPU mode switch
operations.
Original-Change-Id: I7ea865894d1676c865294ab31a903248d9437534
Reviewed-on: http://git-master/r/24893
Reviewed-by: Aleksandr Frid <afrid@nvidia.com>
Tested-by: Aleksandr Frid <afrid@nvidia.com>
Reviewed-by: Scott Williams <scwilliams@nvidia.com>
Original-Change-Id: I906a23561c1567079a41590a30b29b3d52fa5de8
Rebase-Id: R5d16154c91b41fd02f2a50af7ec6868a7958dc13
Diffstat (limited to 'arch/arm/mach-tegra/pm.h')
| -rw-r--r-- | arch/arm/mach-tegra/pm.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/arm/mach-tegra/pm.h b/arch/arm/mach-tegra/pm.h index 88a3f8fe29e0..116885ad78db 100644 --- a/arch/arm/mach-tegra/pm.h +++ b/arch/arm/mach-tegra/pm.h @@ -21,6 +21,8 @@ #ifndef _MACH_TEGRA_SUSPEND_H_ #define _MACH_TEGRA_SUSPEND_H_ +#include <linux/mutex.h> + enum tegra_suspend_mode { TEGRA_SUSPEND_NONE = 0, TEGRA_SUSPEND_LP2, /* CPU voltage off */ @@ -77,11 +79,11 @@ void __init tegra_init_suspend(struct tegra_suspend_platform_data *plat); void tegra_idle_lp2(void); #if defined(CONFIG_TEGRA_AUTO_HOTPLUG) && !defined(CONFIG_ARCH_TEGRA_2x_SOC) -int tegra_auto_hotplug_init(void); +int tegra_auto_hotplug_init(struct mutex *cpu_lock); void tegra_auto_hotplug_exit(void); void tegra_auto_hotplug_governor(unsigned int cpu_freq); #else -static inline int tegra_auto_hotplug_init(void) +static inline int tegra_auto_hotplug_init(struct mutex *cpu_lock) { return 0; } static inline void tegra_auto_hotplug_exit(void) { } |