iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

staging: comedi: ke_counter: add digital output support

Browse Source 
The hardware has three digital output channels. Add the subdevice
support for these channels.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H Hartley Sweeten 2014-03-03 16:47:41 -07:00 committed by Greg Kroah-Hartman
parent 7556dc3731
commit 661b9dbbc3
1 changed files with 22 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
drivers/staging/comedi/drivers/ke_counter.c
View File

@ -95,6 +95,19 @@ static int ke_counter_insn_read(struct comedi_device *dev,
return insn->n;
}
static int ke_counter_do_insn_bits(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
if (comedi_dio_update_state(s, data))
outb(s->state, dev->iobase + KE_DO_REG);
data[1] = s->state;
return insn->n;
}
static int ke_counter_auto_attach(struct comedi_device *dev,
unsigned long context_unused)
{
@ -107,7 +120,7 @@ static int ke_counter_auto_attach(struct comedi_device *dev,
return ret;
dev->iobase = pci_resource_start(pcidev, 0);
ret = comedi_alloc_subdevices(dev, 1);
ret = comedi_alloc_subdevices(dev, 2);
if (ret)
return ret;
@ -120,6 +133,14 @@ static int ke_counter_auto_attach(struct comedi_device *dev,
s->insn_read = ke_counter_insn_read;
s->insn_write = ke_counter_insn_write;
s = &dev->subdevices[1];
s->type = COMEDI_SUBD_DO;
s->subdev_flags = SDF_WRITABLE;
s->n_chan = 3;
s->maxdata = 1;
s->range_table = &range_digital;
s->insn_bits = ke_counter_do_insn_bits;
outb(KE_OSC_SEL_20MHZ, dev->iobase + KE_OSC_SEL_REG);
outb(0, dev->iobase + KE_RESET_REG(0));