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| author |   Hans-Christian Egtvedt <hcegtvedt@atmel.com> | 2007-02-26 13:50:43 +0100 |
|---|---|---|
| committer |   Haavard Skinnemoen <hskinnemoen@atmel.com> | 2007-04-27 13:44:12 +0200 |
| commit | 19b7ce8bad718a2850ea19aeb7383f1728596c24 (patch) | |
| tree | 1fef17c37eaf90231a497b92dd49565e56986b6c /include/asm-avr32 | |
| parent | [AVR32] Change system timer from count-compare to Timer/Counter 0 (diff) | |
| download | linux-dev-19b7ce8bad718a2850ea19aeb7383f1728596c24.tar.xz linux-dev-19b7ce8bad718a2850ea19aeb7383f1728596c24.zip | |
[AVR32] Put cpu in sleep 0 when idle.
This patch puts the CPU in sleep 0 when doing nothing, idle. This will
turn of the CPU clock and thus save power. The CPU is waken again when
an interrupt occurs.
Signed-off-by: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Diffstat (limited to 'include/asm-avr32')
| -rw-r--r-- | include/asm-avr32/thread_info.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-avr32/thread_info.h b/include/asm-avr32/thread_info.h index d1f5b35ebd54..a2e606dd4f4a 100644 --- a/include/asm-avr32/thread_info.h +++ b/include/asm-avr32/thread_info.h @@ -83,6 +83,7 @@ static inline struct thread_info *current_thread_info(void) #define TIF_SINGLE_STEP 6 /* single step after next break */ #define TIF_MEMDIE 7 #define TIF_RESTORE_SIGMASK 8 /* restore signal mask in do_signal */ +#define TIF_CPU_GOING_TO_SLEEP 9 /* CPU is entering sleep 0 mode */ #define TIF_USERSPACE 31 /* true if FS sets userspace */ #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) @@ -94,6 +95,7 @@ static inline struct thread_info *current_thread_info(void) #define _TIF_SINGLE_STEP (1 << TIF_SINGLE_STEP) #define _TIF_MEMDIE (1 << TIF_MEMDIE) #define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK) +#define _TIF_CPU_GOING_TO_SLEEP (1 << TIF_CPU_GOING_TO_SLEEP) /* XXX: These two masks must never span more than 16 bits! */ /* work to do on interrupt/exception return */ |