comedi/drivers/ni_660x.c

8  * Description: National Instruments 660x counter/timer boards
293 static void ni_660x_gpct_write(struct ni_gpct *counter, unsigned int bits,
296 	struct comedi_device *dev = counter->counter_dev->dev;
298 	ni_660x_write(dev, counter->chip_index, bits, reg);
301 static unsigned int ni_660x_gpct_read(struct ni_gpct *counter,
304 	struct comedi_device *dev = counter->counter_dev->dev;
306 	return ni_660x_read(dev, counter->chip_index, reg);
311 					   struct ni_gpct *counter)
314 	unsigned int chip = counter->chip_index;
318 						     counter->counter_index);
326 					     struct ni_gpct *counter)
329 	unsigned int chip = counter->chip_index;
337 					struct ni_gpct *counter,
346 	ring = devpriv->ring[counter->chip_index][counter->counter_index];
351 			"failed to reserve mite dma channel for counter\n");
355 	ni_tio_set_mite_channel(counter, mite_chan);
356 	ni_660x_set_dma_channel(dev, mite_chan->channel, counter);
362 					 struct ni_gpct *counter)
368 	if (counter->mite_chan) {
369 		struct mite_channel *mite_chan = counter->mite_chan;
371 		ni_660x_unset_dma_channel(dev, mite_chan->channel, counter);
372 		ni_tio_set_mite_channel(counter, NULL);
380 	struct ni_gpct *counter = s->private;
383 	retval = ni_660x_request_mite_channel(dev, counter, COMEDI_INPUT);
386 			"no dma channel available for use by counter\n");
389 	ni_tio_acknowledge(counter);
396 	struct ni_gpct *counter = s->private;
399 	retval = ni_tio_cancel(counter);
400 	ni_660x_release_mite_channel(dev, counter);
423 	struct ni_gpct *counter = s->private;
425 	ni_tio_handle_interrupt(counter, s);
457 	struct ni_gpct *counter = s->private;
462 	mite_sync_dma(counter->mite_chan, s);
471 	struct ni_gpct *counter = s->private;
475 	ring = devpriv->ring[counter->chip_index][counter->counter_index];
1139 	  *   chan 8-39: counter signal inputs
1153 			struct ni_gpct *counter = &gpct_dev->counters[i];
1170 			s->private	= counter;
1172 			ni_tio_init_counter(counter);
1179 	 * To be safe, set counterswap bits on tio chips after all the counter
1253 MODULE_DESCRIPTION("Comedi driver for NI 660x counter/timer boards");