mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-05 10:29:37 +00:00
![Arnd Bergmann](/assets/img/avatar_default.png)
mx27_pm_init() uses its own initcall, unlike all of the other functions like it. Replacing the initcall with a .init_late() callback makes imx27 more like the others and lets us remove the last caller of cpu_is_mx27(). Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
43 lines
893 B
C
43 lines
893 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 = imx_readl(MX27_IO_ADDRESS(MX27_CCM_BASE_ADDR));
|
|
cscr &= 0xFFFFFFFC;
|
|
imx_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,
|
|
};
|
|
|
|
void __init imx27_pm_init(void)
|
|
{
|
|
suspend_set_ops(&mx27_suspend_ops);
|
|
}
|