staging: comedi: pcl812: factor analog input range selection out of (*attach)

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 pcl812_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>

diff --git a/drivers/staging/comedi/drivers/pcl812.c b/drivers/staging/comedi/drivers/pcl812.c
index cc8efa2..1d8366e 100644 (file)
--- a/drivers/staging/comedi/drivers/pcl812.c
+++ b/drivers/staging/comedi/drivers/pcl812.c
@@ -1271,6 +1271,96 @@ static void pcl812_reset(struct comedi_device *dev)
        udelay(5);
 }
 
+static void pcl812_set_ai_range_table(struct comedi_device *dev,
+                                     struct comedi_subdevice *s,
+                                     struct comedi_devconfig *it)
+{
+       const struct pcl812_board *board = comedi_board(dev);
+       struct pcl812_private *devpriv = dev->private;
+
+       /* default to the range table from the boardinfo */
+       s->range_table = board->rangelist_ai;
+
+       /* now check the user config option based on the boardtype */
+       switch (board->board_type) {
+       case boardPCL812PG:
+               if (it->options[4] == 1)
+                       s->range_table = &range_pcl812pg2_ai;
+               break;
+       case boardPCL812:
+               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 = &range812_bipolar1_25;
+                       break;
+               case 4:
+                       s->range_table = &range812_bipolar0_625;
+                       break;
+               case 5:
+                       s->range_table = &range812_bipolar0_3125;
+                       break;
+               default:
+                       s->range_table = &range_bipolar10;
+                       break;
+               }
+               break;
+       case boardPCL813B:
+               if (it->options[1] == 1)
+                       s->range_table = &range_pcl813b2_ai;
+               break;
+       case boardISO813:
+               switch (it->options[1]) {
+               case 0:
+                       s->range_table = &range_iso813_1_ai;
+                       break;
+               case 1:
+                       s->range_table = &range_iso813_1_2_ai;
+                       break;
+               case 2:
+                       s->range_table = &range_iso813_2_ai;
+                       devpriv->range_correction = 1;
+                       break;
+               case 3:
+                       s->range_table = &range_iso813_2_2_ai;
+                       devpriv->range_correction = 1;
+                       break;
+               default:
+                       s->range_table = &range_iso813_1_ai;
+                       break;
+               }
+               break;
+       case boardACL8113:
+               switch (it->options[1]) {
+               case 0:
+                       s->range_table = &range_acl8113_1_ai;
+                       break;
+               case 1:
+                       s->range_table = &range_acl8113_1_2_ai;
+                       break;
+               case 2:
+                       s->range_table = &range_acl8113_2_ai;
+                       devpriv->range_correction = 1;
+                       break;
+               case 3:
+                       s->range_table = &range_acl8113_2_2_ai;
+                       devpriv->range_correction = 1;
+                       break;
+               default:
+                       s->range_table = &range_acl8113_1_ai;
+                       break;
+               }
+               break;
+       }
+}
+
 static int pcl812_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 {
        const struct pcl812_board *board = comedi_board(dev);
@@ -1379,7 +1469,9 @@ static int pcl812_attach(struct comedi_device *dev, struct comedi_devconfig *it)
                        break;
                }
                s->maxdata = board->ai_maxdata;
-               s->range_table = board->rangelist_ai;
+
+               pcl812_set_ai_range_table(dev, s, it);
+
                if (board->board_type == boardACL8216)
                        s->insn_read = acl8216_ai_insn_read;
                else
@@ -1395,84 +1487,6 @@ static int pcl812_attach(struct comedi_device *dev, struct comedi_devconfig *it)
                        s->poll = pcl812_ai_poll;
                        s->cancel = pcl812_ai_cancel;
                }
-               switch (board->board_type) {
-               case boardPCL812PG:
-                       if (it->options[4] == 1)
-                               s->range_table = &range_pcl812pg2_ai;
-                       break;
-               case boardPCL812:
-                       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 = &range812_bipolar1_25;
-                               break;
-                       case 4:
-                               s->range_table = &range812_bipolar0_625;
-                               break;
-                       case 5:
-                               s->range_table = &range812_bipolar0_3125;
-                               break;
-                       default:
-                               s->range_table = &range_bipolar10;
-                               break;
-                       }
-                       break;
-                       break;
-               case boardPCL813B:
-                       if (it->options[1] == 1)
-                               s->range_table = &range_pcl813b2_ai;
-                       break;
-               case boardISO813:
-                       switch (it->options[1]) {
-                       case 0:
-                               s->range_table = &range_iso813_1_ai;
-                               break;
-                       case 1:
-                               s->range_table = &range_iso813_1_2_ai;
-                               break;
-                       case 2:
-                               s->range_table = &range_iso813_2_ai;
-                               devpriv->range_correction = 1;
-                               break;
-                       case 3:
-                               s->range_table = &range_iso813_2_2_ai;
-                               devpriv->range_correction = 1;
-                               break;
-                       default:
-                               s->range_table = &range_iso813_1_ai;
-                               break;
-                       }
-                       break;
-               case boardACL8113:
-                       switch (it->options[1]) {
-                       case 0:
-                               s->range_table = &range_acl8113_1_ai;
-                               break;
-                       case 1:
-                               s->range_table = &range_acl8113_1_2_ai;
-                               break;
-                       case 2:
-                               s->range_table = &range_acl8113_2_ai;
-                               devpriv->range_correction = 1;
-                               break;
-                       case 3:
-                               s->range_table = &range_acl8113_2_2_ai;
-                               devpriv->range_correction = 1;
-                               break;
-                       default:
-                               s->range_table = &range_acl8113_1_ai;
-                               break;
-                       }
-                       break;
-               }
                subdev++;
        }