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| author | Colin Cross <ccross@android.com> | 2011-02-10 02:04:45 -0800 |
|---|---|---|
| committer | Christian Neumüller <cn00@gmx.at> | 2014-12-30 12:53:25 +0100 |
| commit | 3787bae4c393e3cc65e759005b154953f6c080b7 (patch) | |
| tree | e49ae7ebcced7703f3d9c1f1ac985c0575b61b0d /kernel/power | |
| parent | c1e60df3d5d285e38e16e201933f1716b0da0af2 (diff) | |
| download | kernel_samsung_smdk4412-3787bae4c393e3cc65e759005b154953f6c080b7.zip kernel_samsung_smdk4412-3787bae4c393e3cc65e759005b154953f6c080b7.tar.gz kernel_samsung_smdk4412-3787bae4c393e3cc65e759005b154953f6c080b7.tar.bz2 | |
cpu_pm: Add cpu power management notifiers
During some CPU power modes entered during idle, hotplug and
suspend, peripherals located in the CPU power domain, such as
the GIC, localtimers, and VFP, may be powered down. Add a
notifier chain that allows drivers for those peripherals to
be notified before and after they may be reset.
Notified drivers can include VFP co-processor, interrupt controller
and it's PM extensions, local CPU timers context save/restore which
shouldn't be interrupted. Hence CPU PM event APIs must be called
with interrupts disabled.
Change-Id: I2918473962a75cd55c148f91a3c09a773c99162c
Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Tested-and-Acked-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Kevin Hilman <khilman@ti.com>
Tested-by: Vishwanath BS <vishwanath.bs@ti.com>
Signed-off-by: Lanchon <lanchon@gmail.com>
Diffstat (limited to 'kernel/power')
| -rw-r--r-- | kernel/power/Kconfig | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig index 9fda331..ee93757 100644 --- a/kernel/power/Kconfig +++ b/kernel/power/Kconfig @@ -338,3 +338,7 @@ config SUSPEND_TIME Prints the time spent in suspend in the kernel log, and keeps statistics on the time spent in suspend in /sys/kernel/debug/suspend_time + +config CPU_PM + bool + depends on SUSPEND || CPU_IDLE |