C++ (Cpp) ni_pcidio_request_di_mite_channel примеры использования

Пример #1

static int setup_mite_dma(struct comedi_device *dev, struct comedi_subdevice *s)
{
	int retval;

	retval = ni_pcidio_request_di_mite_channel(dev);
	if (retval)
		return retval;

	devpriv->di_mite_chan->dir = COMEDI_INPUT;

	mite_prep_dma(devpriv->di_mite_chan, 32, 32);

	mite_dma_arm(devpriv->di_mite_chan);
	return 0;
}

Пример #2

Файл: ni_pcidio.c Проект: AllenWeb/linux

static int setup_mite_dma(struct comedi_device *dev, struct comedi_subdevice *s)
{
	int retval;
	unsigned long flags;

	retval = ni_pcidio_request_di_mite_channel(dev);
	if (retval)
		return retval;

	/* write alloc the entire buffer */
	comedi_buf_write_alloc(s->async, s->async->prealloc_bufsz);

	spin_lock_irqsave(&devpriv->mite_channel_lock, flags);
	if (devpriv->di_mite_chan) {
		mite_prep_dma(devpriv->di_mite_chan, 32, 32);
		mite_dma_arm(devpriv->di_mite_chan);
	} else
		retval = -EIO;
	spin_unlock_irqrestore(&devpriv->mite_channel_lock, flags);

	return retval;
}