C++ (Cpp) booke_wdt_ping Examples

Example #1

File: booke_wdt.c Project: flwh/Alcatel_OT_985_kernel

static long booke_wdt_ioctl(struct file *file,
				unsigned int cmd, unsigned long arg)
{
	u32 tmp = 0;
	u32 __user *p = (u32 __user *)arg;

	switch (cmd) {
	case WDIOC_GETSUPPORT:
		if (copy_to_user((void *)arg, &ident, sizeof(ident)))
			return -EFAULT;
	case WDIOC_GETSTATUS:
		return put_user(0, p);
	case WDIOC_GETBOOTSTATUS:
		/* XXX: something is clearing TSR */
		tmp = mfspr(SPRN_TSR) & TSR_WRS(3);
		/* returns CARDRESET if last reset was caused by the WDT */
		return (tmp ? WDIOF_CARDRESET : 0);
	case WDIOC_SETOPTIONS:
		if (get_user(tmp, p))
			return -EINVAL;
		if (tmp == WDIOS_ENABLECARD) {
			booke_wdt_ping();
			break;
		} else
			return -EINVAL;
		return 0;
	case WDIOC_KEEPALIVE:
		booke_wdt_ping();
		return 0;
	case WDIOC_SETTIMEOUT:
		if (get_user(tmp, p))
			return -EFAULT;
#ifdef	CONFIG_FSL_BOOKE
		/* period of 1 gives the largest possible timeout */
		if (tmp > period_to_sec(1))
			return -EINVAL;
		booke_wdt_period = sec_to_period(tmp);
#else
		booke_wdt_period = tmp;
#endif
		mtspr(SPRN_TCR, (mfspr(SPRN_TCR) & ~WDTP_MASK) |
						WDTP(booke_wdt_period));
		return 0;
	case WDIOC_GETTIMEOUT:
		return put_user(booke_wdt_period, p);
	default:
		return -ENOTTY;
	}

	return 0;
}

Example #2

File: booke_wdt.c Project: johnny/CobraDroidBeta

static long booke_wdt_ioctl(struct file *file,
				unsigned int cmd, unsigned long arg)
{
	u32 tmp = 0;
	u32 __user *p = (u32 __user *)arg;

	switch (cmd) {
	case WDIOC_GETSUPPORT:
		if (copy_to_user(arg, &ident, sizeof(struct watchdog_info)))
			return -EFAULT;
	case WDIOC_GETSTATUS:
		return put_user(ident.options, p);
	case WDIOC_GETBOOTSTATUS:
		/* XXX: something is clearing TSR */
		tmp = mfspr(SPRN_TSR) & TSR_WRS(3);
		/* returns 1 if last reset was caused by the WDT */
		return (tmp ? 1 : 0);
	case WDIOC_SETOPTIONS:
		if (get_user(tmp, p))
			return -EINVAL;
		if (tmp == WDIOS_ENABLECARD) {
			booke_wdt_ping();
			break;
		} else
			return -EINVAL;
		return 0;
	case WDIOC_KEEPALIVE:
		booke_wdt_ping();
		return 0;
	case WDIOC_SETTIMEOUT:
		if (get_user(booke_wdt_period, p))
			return -EFAULT;
		mtspr(SPRN_TCR, (mfspr(SPRN_TCR) & ~WDTP_MASK) |
						WDTP(booke_wdt_period));
		return 0;
	case WDIOC_GETTIMEOUT:
		return put_user(booke_wdt_period, p);
	default:
		return -ENOTTY;
	}

	return 0;
}

Example #3

/*
 * booke_wdt_enable:
 */
static __inline__ void booke_wdt_enable(void)
{
    u32 val;

    booke_wdt_ping();
    val = mfspr(SPRN_TCR);
    val |= (TCR_WIE|TCR_WRC(WRC_CHIP)|WDTP(booke_wdt_period));
    atomic_set(&booke_wdt_irq, 1);

    mtspr(SPRN_TCR, val);
}

Example #4

File: booke_wdt.c Project: flwh/Alcatel_OT_985_kernel

static ssize_t booke_wdt_write(struct file *file, const char __user *buf,
				size_t count, loff_t *ppos)
{
	booke_wdt_ping();
	return count;
}