static enum hrtimer_restart zdtc_fn(struct hrtimer *timer)
{
struct timespec ts;
getnstimeofday(&ts);
dev_dbg(&zdtc.cset->head.dev, "%s: %9li.%09li\n", __func__,
ts.tv_sec, ts.tv_nsec);
zio_trigger_data_done(zdtc.cset);
return HRTIMER_NORESTART;
}
/* This acts as either a timer or an interrupt tasklet */
static void fd_tlet(unsigned long arg)
{
struct fd_dev *fd = (void *)arg;
struct zio_device *zdev = fd->zdev;
struct zio_channel *chan = zdev->cset[0].chan;
/* If we have no interrupt, read the hw fifo now */
if (fd_timer_period_ms) {
while (!fd_read_hw_fifo(fd))
;
mod_timer(&fd->fifo_timer, jiffies + fd_timer_period_jiffies);
}
/* FIXME: race condition */
if (!test_bit(FD_FLAG_INPUT_READY, &fd->flags))
return;
/* there is an active block, try reading an accumulated sample */
if (fd_read_sw_fifo(fd, chan) == 0) {
clear_bit(FD_FLAG_INPUT_READY, &fd->flags);
zio_trigger_data_done(chan->cset);
}
}