staging: comedi: addi_apci_3120: move apci3120_interrupt_dma() to driver

Move this function from the included source file to the main driver
source file.

Remove the now empty included source file.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 52 insertions, 1 deletions

diff --git a/drivers/staging/comedi/drivers/addi_apci_3120.c b/drivers/staging/comedi/drivers/addi_apci_3120.c
index fce177bd2db2..9bdd7277caa1 100644
--- a/drivers/staging/comedi/drivers/addi_apci_3120.c
+++ b/drivers/staging/comedi/drivers/addi_apci_3120.c
@@ -435,7 +435,58 @@ static void apci3120_set_chanlist(struct comedi_device *dev,
 		devpriv->mode |= APCI3120_MODE_SCAN_ENA;
 }
 
-#include "addi-data/hwdrv_apci3120.c"
+static void apci3120_interrupt_dma(int irq, void *d)
+{
+	struct comedi_device *dev = d;
+	struct apci3120_private *devpriv = dev->private;
+	struct comedi_subdevice *s = dev->read_subdev;
+	struct comedi_async *async = s->async;
+	struct comedi_cmd *cmd = &async->cmd;
+	struct apci3120_dmabuf *dmabuf;
+	unsigned int nbytes;
+	unsigned int nsamples;
+
+	dmabuf = &devpriv->dmabuf[devpriv->cur_dmabuf];
+
+	nbytes = dmabuf->use_size - inl(devpriv->amcc + AMCC_OP_REG_MWTC);
+
+	if (nbytes < dmabuf->use_size)
+		dev_err(dev->class_dev, "Interrupted DMA transfer!\n");
+	if (nbytes & 1) {
+		dev_err(dev->class_dev, "Odd count of bytes in DMA ring!\n");
+		async->events |= COMEDI_CB_ERROR;
+		return;
+	}
+	nsamples = comedi_bytes_to_samples(s, nbytes);
+
+	if (devpriv->use_double_buffer) {
+		struct apci3120_dmabuf *next_dmabuf;
+
+		next_dmabuf = &devpriv->dmabuf[!devpriv->cur_dmabuf];
+
+		/* start DMA on next buffer */
+		apci3120_init_dma(dev, next_dmabuf);
+	}
+
+	if (nsamples) {
+		comedi_buf_write_samples(s, dmabuf->virt, nsamples);
+
+		if (!(cmd->flags & CMDF_WAKE_EOS))
+			async->events |= COMEDI_CB_EOS;
+	}
+
+	if ((async->events & COMEDI_CB_CANCEL_MASK) ||
+	    (cmd->stop_src == TRIG_COUNT && async->scans_done >= cmd->stop_arg))
+		return;
+
+	if (devpriv->use_double_buffer) {
+		/* switch dma buffers for next interrupt */
+		devpriv->cur_dmabuf = !devpriv->cur_dmabuf;
+	} else {
+		/* restart DMA if is not using double buffering */
+		apci3120_init_dma(dev, dmabuf);
+	}
+}
 
 static irqreturn_t apci3120_interrupt(int irq, void *d)
 {