1/* 2 * Copyright 2009 Dmitriy Taychenachev <dimichxp@gmail.com> 3 * 4 * This file is released under the GPLv2 or later. 5 */ 6 7#include <linux/delay.h> 8#include <linux/io.h> 9 10#include <asm/proc-fns.h> 11#include <mach/hardware.h> 12 13#include "crm_regs.h" 14 15#define WDOG_WCR MXC91231_IO_ADDRESS(MXC91231_WDOG1_BASE_ADDR) 16#define WDOG_WCR_OUT_ENABLE (1 << 6) 17#define WDOG_WCR_ASSERT (1 << 5) 18 19void mxc91231_power_off(void) 20{ 21 u16 wcr; 22 23 wcr = __raw_readw(WDOG_WCR); 24 wcr |= WDOG_WCR_OUT_ENABLE; 25 wcr &= ~WDOG_WCR_ASSERT; 26 __raw_writew(wcr, WDOG_WCR); 27} 28 29void mxc91231_arch_reset(char mode, const char *cmd) 30{ 31 u32 amcr; 32 33 /* Reset the AP using CRM */ 34 amcr = __raw_readl(MXC_CRMAP_AMCR); 35 amcr &= ~MXC_CRMAP_AMCR_SW_AP; 36 __raw_writel(amcr, MXC_CRMAP_AMCR); 37 38 mdelay(10); 39 cpu_reset(0); 40} 41 42void mxc91231_prepare_idle(void) 43{ 44 u32 crm_ctl; 45 46 /* Go to WAIT mode after WFI */ 47 crm_ctl = __raw_readl(MXC_DSM_CRM_CONTROL); 48 crm_ctl &= ~(MXC_DSM_CRM_CTRL_LPMD0 | MXC_DSM_CRM_CTRL_LPMD1); 49 crm_ctl |= MXC_DSM_CRM_CTRL_LPMD_WAIT_MODE; 50 __raw_writel(crm_ctl, MXC_DSM_CRM_CONTROL); 51} 52