A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-31 12:10:52 -04:00
Code Issues Projects Releases Packages Wiki Activity

ARM: tegra: cpuidle: use firmware for power down

Browse source 
Attempt to invoke the prepare_idle() and do_idle() firmware calls
to power down a CPU so an underlying firmware gets informed of
the idle operation and performs it by itself if designed in such a way.

Signed-off-by: Alexandre Courbot <[email protected]>
Acked-by: Olof Johansson <[email protected]>
Signed-off-by: Stephen Warren <[email protected]>
This commit is contained in:
Alexandre Courbot 2014-02-12 11:43:44 +09:00 • committed by Stephen Warren
commit 338f2aadca
1 changed files with 6 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

7
arch/arm/mach-tegra/cpuidle-tegra114.c
View file

@ -19,6 +19,7 @@
#include <linux/cpuidle.h>
#include <linux/cpu_pm.h>
#include <linux/clockchips.h>
#include <asm/firmware.h>
#include <asm/cpuidle.h>
#include <asm/suspend.h>
@ -45,7 +46,11 @@ static int tegra114_idle_power_down(struct cpuidle_device *dev,
clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER, &dev->cpu);
cpu_suspend(0, tegra30_sleep_cpu_secondary_finish);
call_firmware_op(prepare_idle);
/* Do suspend by ourselves if the firmware does not implement it */
if (call_firmware_op(do_idle) == -ENOSYS)
cpu_suspend(0, tegra30_sleep_cpu_secondary_finish);
clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_EXIT, &dev->cpu);