static int bcm2835_restart(struct watchdog_device *wdog,
unsigned long action, void *data)
{
struct bcm2835_wdt *wdt = watchdog_get_drvdata(wdog);
__bcm2835_restart(wdt);
return 0;
}
/*
* We can't really power off, but if we do the normal reset scheme, and
* indicate to bootcode.bin not to reboot, then most of the chip will be
* powered off.
*/
static void bcm2835_power_off(void)
{
struct bcm2835_wdt *wdt = bcm2835_power_off_wdt;
u32 val;
/*
* We set the watchdog hard reset bit here to distinguish this reset
* from the normal (full) reset. bootcode.bin will not reboot after a
* hard reset.
*/
val = readl_relaxed(wdt->base + PM_RSTS);
val |= PM_PASSWORD | PM_RSTS_RASPBERRYPI_HALT;
writel_relaxed(val, wdt->base + PM_RSTS);
/* Continue with normal reset mechanism */
__bcm2835_restart(wdt);
}
/*
* We can't really power off, but if we do the normal reset scheme, and
* indicate to bootcode.bin not to reboot, then most of the chip will be
* powered off.
*/
static void bcm2835_power_off(void)
{
struct device_node *np =
of_find_compatible_node(NULL, NULL, "brcm,bcm2835-pm-wdt");
struct platform_device *pdev = of_find_device_by_node(np);
struct bcm2835_wdt *wdt = platform_get_drvdata(pdev);
u32 val;
/*
* We set the watchdog hard reset bit here to distinguish this reset
* from the normal (full) reset. bootcode.bin will not reboot after a
* hard reset.
*/
val = readl_relaxed(wdt->base + PM_RSTS);
val |= PM_PASSWORD | PM_RSTS_RASPBERRYPI_HALT;
writel_relaxed(val, wdt->base + PM_RSTS);
/* Continue with normal reset mechanism */
__bcm2835_restart(wdt);
}
