linux/arch/mips/include/asm/mach-au1x00
Manuel Lauss 61f9c58da5 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 <mano@roarinelk.homelinux.net>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

 create mode 100644 arch/mips/alchemy/devboards/pm.c
2009-01-11 09:57:27 +00:00
..
au1xxx.h MIPS: Move headfiles to new location below arch/mips/include 2008-10-11 16:18:52 +01:00
au1xxx_dbdma.h MIPS: Alchemy: dbdma suspend/resume support. 2009-01-11 09:57:27 +00:00
au1xxx_ide.h MIPS: Move headfiles to new location below arch/mips/include 2008-10-11 16:18:52 +01:00
au1xxx_psc.h MIPS: Move headfiles to new location below arch/mips/include 2008-10-11 16:18:52 +01:00
au1000.h MIPS: Alchemy: new userspace suspend interface for development boards. 2009-01-11 09:57:27 +00:00
au1000_dma.h MIPS: Move headfiles to new location below arch/mips/include 2008-10-11 16:18:52 +01:00
au1000_gpio.h MIPS: Move headfiles to new location below arch/mips/include 2008-10-11 16:18:52 +01:00
au1100_mmc.h MIPS: Move headfiles to new location below arch/mips/include 2008-10-11 16:18:52 +01:00
au1550_spi.h MIPS: Move headfiles to new location below arch/mips/include 2008-10-11 16:18:52 +01:00
gpio.h MIPS: Move headfiles to new location below arch/mips/include 2008-10-11 16:18:52 +01:00
ioremap.h MIPS: Move headfiles to new location below arch/mips/include 2008-10-11 16:18:52 +01:00
prom.h MIPS: Move headfiles to new location below arch/mips/include 2008-10-11 16:18:52 +01:00
war.h MIPS: Move headfiles to new location below arch/mips/include 2008-10-11 16:18:52 +01:00