| /* |
| * 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; |
| } |
| } |
