Dmitriy Taychenachev | fd6ac7b | 2009-07-31 20:29:22 +0900 | [diff] [blame] | 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 | |
| 19 | void 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 | |
| 29 | void 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 | |
| 42 | void 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 | } |