![Bastian Hecht](/assets/img/avatar_default.png)
Add the lighest possible sleep mode on Cortex-A9 cores: CPU sleep. It is entered by a simple dsb and wfi instruction via cpu_do_idle(). As just clocks are stopped there is no need to save or restore any state of the system. Signed-off-by: Bastian Hecht <hechtb+renesas@gmail.com> Acked-by: Magnus Damm <damm@opensource.se> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
33 lines
666 B
C
33 lines
666 B
C
/*
|
|
* sh73a0 Power management support
|
|
*
|
|
* Copyright (C) 2012 Bastian Hecht <hechtb+renesas@gmail.com>
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*/
|
|
|
|
#include <linux/suspend.h>
|
|
#include <mach/common.h>
|
|
|
|
#ifdef CONFIG_SUSPEND
|
|
static int sh73a0_enter_suspend(suspend_state_t suspend_state)
|
|
{
|
|
cpu_do_idle();
|
|
return 0;
|
|
}
|
|
|
|
static void sh73a0_suspend_init(void)
|
|
{
|
|
shmobile_suspend_ops.enter = sh73a0_enter_suspend;
|
|
}
|
|
#else
|
|
static void sh73a0_suspend_init(void) {}
|
|
#endif
|
|
|
|
void __init sh73a0_pm_init(void)
|
|
{
|
|
sh73a0_suspend_init();
|
|
}
|