From 61f9c58da57a80b0df1ced18a28cbbaebd4d417a Mon Sep 17 00:00:00 2001 From: Manuel Lauss Date: Sun, 21 Dec 2008 09:26:27 +0100 Subject: MIPS: Alchemy: new userspace suspend interface for development boards. Replace the current sysctl-based suspend interface with a new sysfs- based one which also uses the Linux-2.6 suspend model. To configure wakeup sources, a subtree for the demoboards is created under /sys/power/db1x: sys/ `-- power `-- db1x |-- gpio0 |-- gpio1 |-- gpio2 |-- gpio3 |-- gpio4 |-- gpio5 |-- gpio6 |-- gpio7 |-- timer |-- timer_timeout |-- wakemsk `-- wakesrc The nodes 'gpio[0-7]' and 'timer' configure the GPIO0..7 and M2 bits of the SYS_WAKEMSK (wakeup source enable) register. Writing '1' enables a wakesource, 0 disables it. The 'timer_timeout' node holds the timeout in seconds after which the TOYMATCH2 event should wake the system. The 'wakesrc' node holds the SYS_WAKESRC register after wakeup (in hex), the 'wakemsk' node can be used to get/set the wakeup mask directly. For example, to have the timer wake the system after 10 seconds of sleep, the following must be done in userspace: echo 10 > /sys/power/db1x/timer_timeout echo 1 > /sys/power/db1x/timer echo mem > /sys/power/sleep This patch also removes the homebrew CPU frequency switching code. I don't understand how it could have ever worked reliably; it does not communicate the clock changes to peripheral devices other than uarts. Signed-off-by: Manuel Lauss Signed-off-by: Ralf Baechle create mode 100644 arch/mips/alchemy/devboards/pm.c --- arch/mips/include/asm/mach-au1x00/au1000.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch/mips/include/asm') diff --git a/arch/mips/include/asm/mach-au1x00/au1000.h b/arch/mips/include/asm/mach-au1x00/au1000.h index 515373c6d4a1..62f91f50b5b5 100644 --- a/arch/mips/include/asm/mach-au1x00/au1000.h +++ b/arch/mips/include/asm/mach-au1x00/au1000.h @@ -1560,6 +1560,10 @@ enum soc_au1200_ints { #define SYS_SLPPWR 0xB1900078 #define SYS_SLEEP 0xB190007C +#define SYS_WAKEMSK_D2 (1 << 9) +#define SYS_WAKEMSK_M2 (1 << 8) +#define SYS_WAKEMSK_GPIO(x) (1 << (x)) + /* Clock Controller */ #define SYS_FREQCTRL0 0xB1900020 # define SYS_FC_FRDIV2_BIT 22 -- cgit v1.2.2