linux/arch/arm/mach-imx/pm-imx27.c
Shawn Guo 50f2de6126 ARM: imx: include hardware.h rather than mach/hardware.h
It moves a bunch of header files included in hardware.h and itself
from mach-imx/include/mach to mach-imx, and updates users to include
hardware.h rather than mach/hardware.h.  The files in mach-imx/devices
will need to include "../hardware.h".

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
2012-10-15 10:05:43 +08:00

50 lines
979 B
C

/*
* i.MX27 Power Management Routines
*
* Based on Freescale's BSP
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License.
*/
#include <linux/kernel.h>
#include <linux/suspend.h>
#include <linux/io.h>
#include "hardware.h"
static int mx27_suspend_enter(suspend_state_t state)
{
u32 cscr;
switch (state) {
case PM_SUSPEND_MEM:
/* Clear MPEN and SPEN to disable MPLL/SPLL */
cscr = __raw_readl(MX27_IO_ADDRESS(MX27_CCM_BASE_ADDR));
cscr &= 0xFFFFFFFC;
__raw_writel(cscr, MX27_IO_ADDRESS(MX27_CCM_BASE_ADDR));
/* Executes WFI */
cpu_do_idle();
break;
default:
return -EINVAL;
}
return 0;
}
static const struct platform_suspend_ops mx27_suspend_ops = {
.enter = mx27_suspend_enter,
.valid = suspend_valid_only_mem,
};
static int __init mx27_pm_init(void)
{
if (!cpu_is_mx27())
return 0;
suspend_set_ops(&mx27_suspend_ops);
return 0;
}
device_initcall(mx27_pm_init);