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staging: comedi: pcl818: factor analog input range selection out of (*attach)

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The analog input subdevice range is setup in this driver based on a config
option passed by the user. Factor the code that sets the range_table out
of pcl818_attach() to clarify the (*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>
This commit is contained in:
H Hartley Sweeten 2014-02-17 14:26:57 -07:00 committed by Greg Kroah-Hartman
parent 8f10ecc1c3
commit f39b8ccf7e
1 changed files with 54 additions and 38 deletions
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92
drivers/staging/comedi/drivers/pcl818.c
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@ -1294,6 +1294,57 @@ static void pcl818_reset(struct comedi_device *dev)
}
}
static void pcl818_set_ai_range_table(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_devconfig *it)
{
const struct pcl818_board *board = comedi_board(dev);
/* default to the range table from the boardinfo */
s->range_table = board->ai_range_type;
/* now check the user config option based on the boardtype */
if (board->is_818) {
if (it->options[4] == 1 || it->options[4] == 10) {
/* secondary range list jumper selectable */
s->range_table = &range_pcl818l_h_ai;
}
} else {
switch (it->options[4]) {
case 0:
s->range_table = &range_bipolar10;
break;
case 1:
s->range_table = &range_bipolar5;
break;
case 2:
s->range_table = &range_bipolar2_5;
break;
case 3:
s->range_table = &range718_bipolar1;
break;
case 4:
s->range_table = &range718_bipolar0_5;
break;
case 6:
s->range_table = &range_unipolar10;
break;
case 7:
s->range_table = &range_unipolar5;
break;
case 8:
s->range_table = &range718_unipolar2;
break;
case 9:
s->range_table = &range718_unipolar1;
break;
default:
s->range_table = &range_unknown;
break;
}
}
}
static int pcl818_attach(struct comedi_device *dev, struct comedi_devconfig *it)
{
const struct pcl818_board *board = comedi_board(dev);
@ -1376,7 +1427,9 @@ static int pcl818_attach(struct comedi_device *dev, struct comedi_devconfig *it)
s->subdev_flags |= SDF_DIFF;
}
s->maxdata = board->ai_maxdata;
s->range_table = board->ai_range_type;
pcl818_set_ai_range_table(dev, s, it);
s->insn_read = pcl818_ai_insn_read;
if (dev->irq) {
dev->read_subdev = s;
@ -1386,43 +1439,6 @@ static int pcl818_attach(struct comedi_device *dev, struct comedi_devconfig *it)
s->do_cmd = ai_cmd;
s->cancel = pcl818_ai_cancel;
}
if (board->is_818) {
if ((it->options[4] == 1) || (it->options[4] == 10))
s->range_table = &range_pcl818l_h_ai; /* secondary range list jumper selectable */
} else {
switch (it->options[4]) {
case 0:
s->range_table = &range_bipolar10;
break;
case 1:
s->range_table = &range_bipolar5;
break;
case 2:
s->range_table = &range_bipolar2_5;
break;
case 3:
s->range_table = &range718_bipolar1;
break;
case 4:
s->range_table = &range718_bipolar0_5;
break;
case 6:
s->range_table = &range_unipolar10;
break;
case 7:
s->range_table = &range_unipolar5;
break;
case 8:
s->range_table = &range718_unipolar2;
break;
case 9:
s->range_table = &range718_unipolar1;
break;
default:
s->range_table = &range_unknown;
break;
}
}
}
s = &dev->subdevices[1];