From 02a00cf672a37292c31bbdde191712bfa40a4f1d Mon Sep 17 00:00:00 2001 From: Haavard Skinnemoen Date: Sun, 24 Feb 2008 13:51:38 +0100 Subject: avr32: Power Management support ("standby" and "mem" modes) Implement Standby support. In this mode, we'll suspend all drivers, put the SDRAM in self-refresh mode and switch off the HSB bus ("frozen" mode.) Implement Suspend-to-mem support. In this mode, we suspend all drivers, put the SDRAM into self-refresh mode and switch off all internal clocks except the 32 kHz oscillator ("stop" mode.) The lowest-level suspend code runs from a small portion of SRAM allocated at startup time. This gets rid of a small potential race with the SDRAM where we might try to enter self-refresh mode in the middle of an icache burst. We also relocate all interrupt and exception handlers to SRAM during the small window when we enter and exit the low-power modes. We don't need to do any special tricks to start and stop the PLL. The main clock is automatically gated by hardware until the PLL is stable. Signed-off-by: Haavard Skinnemoen --- include/asm-avr32/thread_info.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/asm-avr32/thread_info.h') diff --git a/include/asm-avr32/thread_info.h b/include/asm-avr32/thread_info.h index 07049f6c0d41..df68631b7b27 100644 --- a/include/asm-avr32/thread_info.h +++ b/include/asm-avr32/thread_info.h @@ -88,6 +88,7 @@ static inline struct thread_info *current_thread_info(void) #define TIF_MEMDIE 6 #define TIF_RESTORE_SIGMASK 7 /* restore signal mask in do_signal */ #define TIF_CPU_GOING_TO_SLEEP 8 /* CPU is entering sleep 0 mode */ +#define TIF_FREEZE 29 #define TIF_DEBUG 30 /* debugging enabled */ #define TIF_USERSPACE 31 /* true if FS sets userspace */ -- cgit v1.2.3