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/*
* Copyright (C) 2012 Freescale Semiconductor, Inc. All Rights Reserved.
*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
#include <linux/io.h>
#include "common.h"
#include "crmregs-imx3.h"
#include "devices/devices-common.h"
#include "hardware.h"
/*
* Set cpu low power mode before WFI instruction. This function is called
* mx3 because it can be used for mx31 and mx35.
* Currently only WAIT_MODE is supported.
*/
void mx3_cpu_lp_set(enum mx3_cpu_pwr_mode mode)
{
int reg = imx_readl(mx3_ccm_base + MXC_CCM_CCMR);
reg &= ~MXC_CCM_CCMR_LPM_MASK;
switch (mode) {
case MX3_WAIT:
if (cpu_is_mx35())
reg |= MXC_CCM_CCMR_LPM_WAIT_MX35;
imx_writel(reg, mx3_ccm_base + MXC_CCM_CCMR);
break;
default:
pr_err("Unknown cpu power mode: %d\n", mode);
return;
}
}
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