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staging: comedi: das800: remove forward declarations
Move the das800_cancel() and das800_interrupt() functions to remove the need for the remaining forward declarations. 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>
This commit is contained in:
H Hartley Sweeten
Greg Kroah-Hartman
parent
62c3b4bf66
commit
fe9b0850ab
@ -228,122 +228,6 @@ struct das800_private {
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volatile int do_bits; /* digital output bits */
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};
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static int das800_cancel(struct comedi_device *dev, struct comedi_subdevice *s);
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static irqreturn_t das800_interrupt(int irq, void *d);
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static void enable_das800(struct comedi_device *dev);
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static void disable_das800(struct comedi_device *dev);
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/* interrupt service routine */
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static irqreturn_t das800_interrupt(int irq, void *d)
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{
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short i; /* loop index */
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short dataPoint = 0;
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struct comedi_device *dev = d;
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const struct das800_board *thisboard = comedi_board(dev);
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struct das800_private *devpriv = dev->private;
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struct comedi_subdevice *s = dev->read_subdev; /* analog input subdevice */
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struct comedi_async *async;
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int status;
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unsigned long irq_flags;
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static const int max_loops = 128; /* half-fifo size for cio-das802/16 */
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/* flags */
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int fifo_empty = 0;
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int fifo_overflow = 0;
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status = inb(dev->iobase + DAS800_STATUS);
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/* if interrupt was not generated by board or driver not attached, quit */
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if (!(status & IRQ))
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return IRQ_NONE;
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if (!(dev->attached))
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return IRQ_HANDLED;
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/* wait until here to initialize async, since we will get null dereference
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* if interrupt occurs before driver is fully attached!
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*/
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async = s->async;
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/* if hardware conversions are not enabled, then quit */
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spin_lock_irqsave(&dev->spinlock, irq_flags);
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outb(CONTROL1, dev->iobase + DAS800_GAIN); /* select base address + 7 to be STATUS2 register */
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status = inb(dev->iobase + DAS800_STATUS2) & STATUS2_HCEN;
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/* don't release spinlock yet since we want to make sure no one else disables hardware conversions */
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if (status == 0) {
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spin_unlock_irqrestore(&dev->spinlock, irq_flags);
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return IRQ_HANDLED;
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}
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/* loop while card's fifo is not empty (and limit to half fifo for cio-das802/16) */
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for (i = 0; i < max_loops; i++) {
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/* read 16 bits from dev->iobase and dev->iobase + 1 */
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dataPoint = inb(dev->iobase + DAS800_LSB);
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dataPoint += inb(dev->iobase + DAS800_MSB) << 8;
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if (thisboard->resolution == 12) {
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fifo_empty = dataPoint & FIFO_EMPTY;
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fifo_overflow = dataPoint & FIFO_OVF;
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if (fifo_overflow)
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break;
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} else {
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fifo_empty = 0; /* cio-das802/16 has no fifo empty status bit */
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}
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if (fifo_empty)
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break;
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/* strip off extraneous bits for 12 bit cards */
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if (thisboard->resolution == 12)
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dataPoint = (dataPoint >> 4) & 0xfff;
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/* if there are more data points to collect */
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if (devpriv->count > 0 || devpriv->forever == 1) {
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/* write data point to buffer */
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cfc_write_to_buffer(s, dataPoint);
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if (devpriv->count > 0)
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devpriv->count--;
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}
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}
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async->events |= COMEDI_CB_BLOCK;
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/* check for fifo overflow */
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if (thisboard->resolution == 12) {
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fifo_overflow = dataPoint & FIFO_OVF;
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/* else cio-das802/16 */
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} else {
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fifo_overflow = inb(dev->iobase + DAS800_GAIN) & CIO_FFOV;
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}
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if (fifo_overflow) {
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spin_unlock_irqrestore(&dev->spinlock, irq_flags);
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comedi_error(dev, "DAS800 FIFO overflow");
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das800_cancel(dev, s);
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async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA;
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comedi_event(dev, s);
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async->events = 0;
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return IRQ_HANDLED;
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}
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if (devpriv->count > 0 || devpriv->forever == 1) {
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/* Re-enable card's interrupt.
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* We already have spinlock, so indirect addressing is safe */
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outb(CONTROL1, dev->iobase + DAS800_GAIN); /* select dev->iobase + 2 to be control register 1 */
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outb(CONTROL1_INTE | devpriv->do_bits,
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dev->iobase + DAS800_CONTROL1);
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spin_unlock_irqrestore(&dev->spinlock, irq_flags);
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/* otherwise, stop taking data */
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} else {
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spin_unlock_irqrestore(&dev->spinlock, irq_flags);
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disable_das800(dev); /* disable hardware triggered conversions */
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async->events |= COMEDI_CB_EOA;
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}
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comedi_event(dev, s);
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async->events = 0;
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return IRQ_HANDLED;
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}
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static int das800_cancel(struct comedi_device *dev, struct comedi_subdevice *s)
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{
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struct das800_private *devpriv = dev->private;
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devpriv->forever = 0;
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devpriv->count = 0;
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disable_das800(dev);
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return 0;
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}
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/* enable_das800 makes the card start taking hardware triggered conversions */
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static void enable_das800(struct comedi_device *dev)
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{
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@ -387,6 +271,16 @@ static int das800_set_frequency(struct comedi_device *dev)
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return 0;
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}
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static int das800_cancel(struct comedi_device *dev, struct comedi_subdevice *s)
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{
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struct das800_private *devpriv = dev->private;
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devpriv->forever = 0;
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devpriv->count = 0;
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disable_das800(dev);
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return 0;
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}
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static int das800_ai_do_cmdtest(struct comedi_device *dev,
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struct comedi_subdevice *s,
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struct comedi_cmd *cmd)
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@ -564,6 +458,105 @@ static int das800_ai_do_cmd(struct comedi_device *dev,
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return 0;
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}
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static irqreturn_t das800_interrupt(int irq, void *d)
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{
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short i; /* loop index */
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short dataPoint = 0;
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struct comedi_device *dev = d;
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const struct das800_board *thisboard = comedi_board(dev);
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struct das800_private *devpriv = dev->private;
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struct comedi_subdevice *s = dev->read_subdev; /* analog input subdevice */
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struct comedi_async *async;
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int status;
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unsigned long irq_flags;
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static const int max_loops = 128; /* half-fifo size for cio-das802/16 */
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/* flags */
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int fifo_empty = 0;
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int fifo_overflow = 0;
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status = inb(dev->iobase + DAS800_STATUS);
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/* if interrupt was not generated by board or driver not attached, quit */
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if (!(status & IRQ))
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return IRQ_NONE;
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if (!(dev->attached))
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return IRQ_HANDLED;
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/* wait until here to initialize async, since we will get null dereference
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* if interrupt occurs before driver is fully attached!
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*/
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async = s->async;
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/* if hardware conversions are not enabled, then quit */
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spin_lock_irqsave(&dev->spinlock, irq_flags);
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outb(CONTROL1, dev->iobase + DAS800_GAIN); /* select base address + 7 to be STATUS2 register */
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status = inb(dev->iobase + DAS800_STATUS2) & STATUS2_HCEN;
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/* don't release spinlock yet since we want to make sure no one else disables hardware conversions */
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if (status == 0) {
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spin_unlock_irqrestore(&dev->spinlock, irq_flags);
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return IRQ_HANDLED;
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}
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/* loop while card's fifo is not empty (and limit to half fifo for cio-das802/16) */
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for (i = 0; i < max_loops; i++) {
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/* read 16 bits from dev->iobase and dev->iobase + 1 */
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dataPoint = inb(dev->iobase + DAS800_LSB);
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dataPoint += inb(dev->iobase + DAS800_MSB) << 8;
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if (thisboard->resolution == 12) {
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fifo_empty = dataPoint & FIFO_EMPTY;
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fifo_overflow = dataPoint & FIFO_OVF;
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if (fifo_overflow)
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break;
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} else {
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fifo_empty = 0; /* cio-das802/16 has no fifo empty status bit */
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}
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if (fifo_empty)
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break;
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/* strip off extraneous bits for 12 bit cards */
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if (thisboard->resolution == 12)
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dataPoint = (dataPoint >> 4) & 0xfff;
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/* if there are more data points to collect */
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if (devpriv->count > 0 || devpriv->forever == 1) {
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/* write data point to buffer */
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cfc_write_to_buffer(s, dataPoint);
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if (devpriv->count > 0)
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devpriv->count--;
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}
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}
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async->events |= COMEDI_CB_BLOCK;
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/* check for fifo overflow */
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if (thisboard->resolution == 12) {
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fifo_overflow = dataPoint & FIFO_OVF;
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/* else cio-das802/16 */
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} else {
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fifo_overflow = inb(dev->iobase + DAS800_GAIN) & CIO_FFOV;
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}
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if (fifo_overflow) {
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spin_unlock_irqrestore(&dev->spinlock, irq_flags);
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comedi_error(dev, "DAS800 FIFO overflow");
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das800_cancel(dev, s);
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async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA;
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comedi_event(dev, s);
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async->events = 0;
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return IRQ_HANDLED;
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}
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if (devpriv->count > 0 || devpriv->forever == 1) {
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/* Re-enable card's interrupt.
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* We already have spinlock, so indirect addressing is safe */
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outb(CONTROL1, dev->iobase + DAS800_GAIN); /* select dev->iobase + 2 to be control register 1 */
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outb(CONTROL1_INTE | devpriv->do_bits,
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dev->iobase + DAS800_CONTROL1);
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spin_unlock_irqrestore(&dev->spinlock, irq_flags);
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/* otherwise, stop taking data */
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} else {
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spin_unlock_irqrestore(&dev->spinlock, irq_flags);
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disable_das800(dev); /* disable hardware triggered conversions */
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async->events |= COMEDI_CB_EOA;
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}
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comedi_event(dev, s);
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async->events = 0;
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return IRQ_HANDLED;
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}
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static int das800_ai_rinsn(struct comedi_device *dev,
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struct comedi_subdevice *s, struct comedi_insn *insn,
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unsigned int *data)
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