diff options
| author | H Hartley Sweeten <hsweeten@visionengravers.com> | 2015-01-07 17:19:31 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-01-09 17:03:55 -0800 |
| commit | ffe1cb9a3ed83c753183015b31dfb6fc148403f7 (patch) | |
| tree | e3d73b27d3d248bcfc1ff7467ab6459cf65a5896 | |
| parent | 21f1801fcbb970ed46ad4cd90585cec3b69e23cc (diff) | |
staging: comedi: aio_iiro_16: introduce aio_iiro_enable_irq()
This board supports interrupts on change of state of the digital inputs.
Introduce a helper function to enable/disable the interrupt. Use the new
helper function to ensure that interrupts are initially disabled during
the driver (*attach).
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>
| -rw-r--r-- | drivers/staging/comedi/drivers/aio_iiro_16.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/staging/comedi/drivers/aio_iiro_16.c b/drivers/staging/comedi/drivers/aio_iiro_16.c index 8cd5f116e15b..f84fb7446994 100644 --- a/drivers/staging/comedi/drivers/aio_iiro_16.c +++ b/drivers/staging/comedi/drivers/aio_iiro_16.c @@ -34,6 +34,14 @@ #define AIO_IIRO_16_RELAY_8_15 0x04 #define AIO_IIRO_16_INPUT_8_15 0x05 +static void aio_iiro_enable_irq(struct comedi_device *dev, bool enable) +{ + if (enable) + inb(dev->iobase + AIO_IIRO_16_IRQ); + else + outb(0, dev->iobase + AIO_IIRO_16_IRQ); +} + static int aio_iiro_16_do_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, @@ -72,6 +80,8 @@ static int aio_iiro_16_attach(struct comedi_device *dev, if (ret) return ret; + aio_iiro_enable_irq(dev, false); + ret = comedi_alloc_subdevices(dev, 2); if (ret) return ret; |