static int wdt_disable(void)
{
wdt_ctrl(0);
return 0;
}
static int
wdt_ctrl(enum wdt_ctrl ctrl, enum wdt_event type, unsigned int timeout)
{
u16 val;
int ret;
struct ec_message msg = {
.rlen = 0,
.wlen = 0,
};
u8 *fevent = &msg.u.data[0];
struct wdt_event_delay *event =
(struct wdt_event_delay *)&msg.u.data[1];
switch (ctrl) {
case SET_TIMEOUT:
memset(event, 0xff, sizeof(*event));
msg.wlen = sizeof(*event);
*fevent = 0;
val = (!timeout) ? 0xffff : swab16(timeout * WDT_FREQ);
switch (type) {
case DELAY:
event->delay = val;
break;
case PWRBTN:
event->pwrbtn = val;
break;
case NMI:
event->nmi = val;
break;
case RESET:
event->reset = val;
break;
case WDPIN:
event->wdpin = val;
break;
case SCI:
event->sci = val;
break;
default:
return -EINVAL;
}
ret = imanager_msg_write(EC_CMD_WDT_CTRL, SET_TIMEOUT, &msg);
if (ret < 0) {
pr_err("Failed to set timeout\n");
return ret;
}
break;
case START:
case STOP:
case RST:
case STOPBOOT:
/* simple command, no data */
return imanager_msg_write(EC_CMD_WDT_CTRL, ctrl, NULL);
default:
return -EINVAL;
}
return timeout;
}
int wdt_core_start_timer(void)
{
return set_timer(START);
}
int wdt_core_stop_timer(void)
{
return set_timer(STOP);
}
int wdt_core_reset_timer(void)
{
return set_timer(RST);
}
int wdt_core_stop_boot_timer(void)
{
return set_timer(STOPBOOT);
}
inline int wdt_core_set_timeout(enum wdt_event type, u32 timeout)
{
return wdt_ctrl(SET_TIMEOUT, type, timeout);
}
int wdt_core_disable_all(void)
{
struct ec_message msg = {
.rlen = 0,
.wlen = sizeof(struct wdt_event_delay),
};
struct wdt_event_delay *event =
(struct wdt_event_delay *)&msg.u.data[1];
memset(event, 0xff, sizeof(*event));
return (wdt_core_stop_timer() ||
wdt_core_stop_boot_timer() ||
imanager_msg_write(EC_CMD_WDT_CTRL, SET_TIMEOUT, &msg));
}
int wdt_core_init(void)
{
wd = imanager_get_watchdog_device();
if (!wd)
return -ENODEV;
return 0;
}
static int wdt_ping(void)
{
wdt_ctrl(timeout);
return 0;
}
