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staging: comedi: aio_iiro_16: read intial state of the digital outputs

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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>
This commit is contained in:
H Hartley Sweeten
2015-01-07 17:19:30 -07:00
committed by Greg Kroah-Hartman
parent 9cdb432c6d
commit 21f1801fcb
1 changed files with 4 additions and 0 deletions
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4
drivers/staging/comedi/drivers/aio_iiro_16.c
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@@ -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;