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author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-14 13:42:43 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-14 13:42:43 -0700 |
commit | 2cf4d4514d5b43c1f3b64bd0ec8b9853bde8f1dc (patch) | |
tree | e35a625496acc6ac852846d40b8851186b9d1ac4 /arch/arm/plat-s3c/include/plat/watchdog-reset.h | |
parent | 44b7532b8b464f606053562400719c9c21276037 (diff) | |
parent | ce53895a5d24e0ee19fb92f56c17323fb4c9ab27 (diff) | |
download | op-kernel-dev-2cf4d4514d5b43c1f3b64bd0ec8b9853bde8f1dc.zip op-kernel-dev-2cf4d4514d5b43c1f3b64bd0ec8b9853bde8f1dc.tar.gz |
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (417 commits)
MAINTAINERS: EB110ATX is not ebsa110
MAINTAINERS: update Eric Miao's email address and status
fb: add support of LCD display controller on pxa168/910 (base layer)
[ARM] 5552/1: ep93xx get_uart_rate(): use EP93XX_SYSCON_PWRCNT and EP93XX_SYSCON_PWRCN
[ARM] pxa/sharpsl_pm: zaurus needs generic pxa suspend/resume routines
[ARM] 5544/1: Trust PrimeCell resource sizes
[ARM] pxa/sharpsl_pm: cleanup of gpio-related code.
[ARM] pxa/sharpsl_pm: drop set_irq_type calls
[ARM] pxa/sharpsl_pm: merge pxa-specific code into generic one
[ARM] pxa/sharpsl_pm: merge the two sharpsl_pm.c since it's now pxa specific
[ARM] sa1100: remove unused collie_pm.c
[ARM] pxa: fix the conflicting non-static declarations of global_gpios[]
[ARM] 5550/1: Add default configure file for w90p910 platform
[ARM] 5549/1: Add clock api for w90p910 platform.
[ARM] 5548/1: Add gpio api for w90p910 platform
[ARM] 5551/1: Add multi-function pin api for w90p910 platform.
[ARM] Make ARM_VIC_NR depend on ARM_VIC
[ARM] 5546/1: ARM PL022 SSP/SPI driver v3
ARM: OMAP4: SMP: Update defconfig for OMAP4430
ARM: OMAP4: SMP: Enable SMP support for OMAP4430
...
Diffstat (limited to 'arch/arm/plat-s3c/include/plat/watchdog-reset.h')
-rw-r--r-- | arch/arm/plat-s3c/include/plat/watchdog-reset.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/arch/arm/plat-s3c/include/plat/watchdog-reset.h b/arch/arm/plat-s3c/include/plat/watchdog-reset.h new file mode 100644 index 0000000..54b762a --- /dev/null +++ b/arch/arm/plat-s3c/include/plat/watchdog-reset.h @@ -0,0 +1,49 @@ +/* arch/arm/plat-s3c/include/plat/watchdog-reset.h + * + * Copyright (c) 2008 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * S3C2410 - System define for arch_reset() function + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <plat/regs-watchdog.h> +#include <mach/map.h> + +#include <linux/clk.h> +#include <linux/err.h> +#include <linux/io.h> + +static inline void arch_wdt_reset(void) +{ + struct clk *wdtclk; + + printk("arch_reset: attempting watchdog reset\n"); + + __raw_writel(0, S3C2410_WTCON); /* disable watchdog, to be safe */ + + wdtclk = clk_get(NULL, "watchdog"); + if (!IS_ERR(wdtclk)) { + clk_enable(wdtclk); + } else + printk(KERN_WARNING "%s: warning: cannot get watchdog clock\n", __func__); + + /* put initial values into count and data */ + __raw_writel(0x80, S3C2410_WTCNT); + __raw_writel(0x80, S3C2410_WTDAT); + + /* set the watchdog to go and reset... */ + __raw_writel(S3C2410_WTCON_ENABLE|S3C2410_WTCON_DIV16|S3C2410_WTCON_RSTEN | + S3C2410_WTCON_PRESCALE(0x20), S3C2410_WTCON); + + /* wait for reset to assert... */ + mdelay(500); + + printk(KERN_ERR "Watchdog reset failed to assert reset\n"); + + /* delay to allow the serial port to show the message */ + mdelay(50); +} |