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https://github.com/AsahiLinux/u-boot
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
91 lines
2 KiB
C
91 lines
2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Watchdog driver for the FTWDT010 Watch Dog Driver
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*
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* (c) Copyright 2004 Faraday Technology Corp. (www.faraday-tech.com)
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* Based on sa1100_wdt.c by Oleg Drokin <green@crimea.edu>
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* Based on SoftDog driver by Alan Cox <alan@redhat.com>
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*
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* Copyright (C) 2011 Andes Technology Corporation
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* Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com>
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*
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* 27/11/2004 Initial release, Faraday.
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* 12/01/2011 Port to u-boot, Macpaul Lin.
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*/
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#include <common.h>
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#include <watchdog.h>
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#include <asm/io.h>
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#include <faraday/ftwdt010_wdt.h>
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/*
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* Set the watchdog time interval.
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* Counter is 32 bit.
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*/
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int ftwdt010_wdt_settimeout(unsigned int timeout)
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{
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unsigned int reg;
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struct ftwdt010_wdt *wd = (struct ftwdt010_wdt *)CONFIG_FTWDT010_BASE;
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debug("Activating WDT..\n");
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/* Check if disabled */
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if (readl(&wd->wdcr) & ~FTWDT010_WDCR_ENABLE) {
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printf("sorry, watchdog is disabled\n");
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return -1;
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}
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/*
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* In a 66MHz system,
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* if you set WDLOAD as 0x03EF1480 (66000000)
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* the reset timer is 1 second.
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*/
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reg = FTWDT010_WDLOAD(timeout * FTWDT010_TIMEOUT_FACTOR);
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writel(reg, &wd->wdload);
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return 0;
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}
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void ftwdt010_wdt_reset(void)
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{
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struct ftwdt010_wdt *wd = (struct ftwdt010_wdt *)CONFIG_FTWDT010_BASE;
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/* clear control register */
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writel(0, &wd->wdcr);
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/* Write Magic number */
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writel(FTWDT010_WDRESTART_MAGIC, &wd->wdrestart);
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/* Enable WDT */
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writel((FTWDT010_WDCR_RST | FTWDT010_WDCR_ENABLE), &wd->wdcr);
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}
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void ftwdt010_wdt_disable(void)
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{
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struct ftwdt010_wdt *wd = (struct ftwdt010_wdt *)CONFIG_FTWDT010_BASE;
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debug("Deactivating WDT..\n");
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/*
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* It was defined with CONFIG_WATCHDOG_NOWAYOUT in Linux
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*
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* Shut off the timer.
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* Lock it in if it's a module and we defined ...NOWAYOUT
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*/
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writel(0, &wd->wdcr);
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}
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#if defined(CONFIG_HW_WATCHDOG)
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void hw_watchdog_reset(void)
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{
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ftwdt010_wdt_reset();
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}
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void hw_watchdog_init(void)
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{
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/* set timer in ms */
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ftwdt010_wdt_settimeout(CONFIG_FTWDT010_HW_TIMEOUT * 1000);
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}
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#endif
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