diff options
| author | H Hartley Sweeten <hsweeten@visionengravers.com> | 2015-01-07 17:19:30 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-01-09 17:03:55 -0800 |
| commit | 21f1801fcbb970ed46ad4cd90585cec3b69e23cc (patch) | |
| tree | 379ed6513d8b5580b87c5063e0a8af6eaa6a76f1 | |
| parent | 9cdb432c6d64e967a03513de258273d01b8b1852 (diff) | |
staging: comedi: aio_iiro_16: read intial state of the digital outputs
The relay registers are readable. Read them during the attach to get
the initial state of the digital outputs.
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 | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/staging/comedi/drivers/aio_iiro_16.c b/drivers/staging/comedi/drivers/aio_iiro_16.c index 96ea174dd7db..8cd5f116e15b 100644 --- a/drivers/staging/comedi/drivers/aio_iiro_16.c +++ b/drivers/staging/comedi/drivers/aio_iiro_16.c @@ -85,6 +85,10 @@ static int aio_iiro_16_attach(struct comedi_device *dev, s->range_table = &range_digital; s->insn_bits = aio_iiro_16_do_insn_bits; + /* get the initial state of the relays */ + s->state = inb(dev->iobase + AIO_IIRO_16_RELAY_0_7) | + (inb(dev->iobase + AIO_IIRO_16_RELAY_8_15) << 8); + /* Digital Input subdevice */ s = &dev->subdevices[1]; s->type = COMEDI_SUBD_DI; |