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