diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/arm/mach-omap2/wd_timer.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/arm/mach-omap2/wd_timer.c | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/ANDROID_3.4.5/arch/arm/mach-omap2/wd_timer.c b/ANDROID_3.4.5/arch/arm/mach-omap2/wd_timer.c deleted file mode 100644 index 4067669d..00000000 --- a/ANDROID_3.4.5/arch/arm/mach-omap2/wd_timer.c +++ /dev/null @@ -1,56 +0,0 @@ -/* - * OMAP2+ MPU WD_TIMER-specific code - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#include <linux/kernel.h> -#include <linux/io.h> -#include <linux/err.h> - -#include <plat/omap_hwmod.h> - -#include "wd_timer.h" - -/* - * In order to avoid any assumptions from bootloader regarding WDT - * settings, WDT module is reset during init. This enables the watchdog - * timer. Hence it is required to disable the watchdog after the WDT reset - * during init. Otherwise the system would reboot as per the default - * watchdog timer registers settings. - */ -#define OMAP_WDT_WPS 0x34 -#define OMAP_WDT_SPR 0x48 - - -int omap2_wd_timer_disable(struct omap_hwmod *oh) -{ - void __iomem *base; - - if (!oh) { - pr_err("%s: Could not look up wdtimer_hwmod\n", __func__); - return -EINVAL; - } - - base = omap_hwmod_get_mpu_rt_va(oh); - if (!base) { - pr_err("%s: Could not get the base address for %s\n", - oh->name, __func__); - return -EINVAL; - } - - /* sequence required to disable watchdog */ - __raw_writel(0xAAAA, base + OMAP_WDT_SPR); - while (__raw_readl(base + OMAP_WDT_WPS) & 0x10) - cpu_relax(); - - __raw_writel(0x5555, base + OMAP_WDT_SPR); - while (__raw_readl(base + OMAP_WDT_WPS) & 0x10) - cpu_relax(); - - return 0; -} - |