staging: comedi: pcl818: all board types have analog inputs

All the boards supported by this driver have 16 single-ended analog input
channels. The boards can also be configued to give 8 differential inputs.

Remove the 'n_aichan_se' and 'n_aichan_diff' members from the boardinfo and
refactor pcl818_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/pcl818.c b/drivers/staging/comedi/drivers/pcl818.c
index 000df80..4f28026 100644 (file)
--- a/drivers/staging/comedi/drivers/pcl818.c
+++ b/drivers/staging/comedi/drivers/pcl818.c
@@ -259,8 +259,6 @@ static const struct comedi_lrange range718_unipolar1 = {
 struct pcl818_board {
        const char *name;
        int n_ranges;
-       int n_aichan_se;
-       int n_aichan_diff;
        unsigned int ns_min;
        int n_aochan;
        const struct comedi_lrange *ai_range_type;
@@ -276,8 +274,6 @@ static const struct pcl818_board boardtypes[] = {
        {
                .name           = "pcl818l",
                .n_ranges       = 4,
-               .n_aichan_se    = 16,
-               .n_aichan_diff  = 8,
                .ns_min         = 25000,
                .n_aochan       = 1,
                .ai_range_type  = &range_pcl818l_l_ai,
@@ -289,8 +285,6 @@ static const struct pcl818_board boardtypes[] = {
        }, {
                .name           = "pcl818h",
                .n_ranges       = 9,
-               .n_aichan_se    = 16,
-               .n_aichan_diff  = 8,
                .ns_min         = 10000,
                .n_aochan       = 1,
                .ai_range_type  = &range_pcl818h_ai,
@@ -302,8 +296,6 @@ static const struct pcl818_board boardtypes[] = {
        }, {
                .name           = "pcl818hd",
                .n_ranges       = 9,
-               .n_aichan_se    = 16,
-               .n_aichan_diff  = 8,
                .ns_min         = 10000,
                .n_aochan       = 1,
                .ai_range_type  = &range_pcl818h_ai,
@@ -316,8 +308,6 @@ static const struct pcl818_board boardtypes[] = {
        }, {
                .name           = "pcl818hg",
                .n_ranges       = 12,
-               .n_aichan_se    = 16,
-               .n_aichan_diff  = 8,
                .ns_min         = 10000,
                .n_aochan       = 1,
                .ai_range_type  = &range_pcl818hg_ai,
@@ -330,8 +320,6 @@ static const struct pcl818_board boardtypes[] = {
        }, {
                .name           = "pcl818",
                .n_ranges       = 9,
-               .n_aichan_se    = 16,
-               .n_aichan_diff  = 8,
                .ns_min         = 10000,
                .n_aochan       = 2,
                .ai_range_type  = &range_pcl818h_ai,
@@ -343,8 +331,6 @@ static const struct pcl818_board boardtypes[] = {
        }, {
                .name           = "pcl718",
                .n_ranges       = 1,
-               .n_aichan_se    = 16,
-               .n_aichan_diff  = 8,
                .ns_min         = 16000,
                .n_aochan       = 2,
                .ai_range_type  = &range_unipolar5,
@@ -355,8 +341,6 @@ static const struct pcl818_board boardtypes[] = {
        }, {
                .name           = "pcm3718",
                .n_ranges       = 9,
-               .n_aichan_se    = 16,
-               .n_aichan_diff  = 8,
                .ns_min         = 10000,
                .ai_range_type  = &range_pcl818h_ai,
                .IRQbits        = 0x00fc,
@@ -1414,31 +1398,27 @@ static int pcl818_attach(struct comedi_device *dev, struct comedi_devconfig *it)
                return ret;
 
        s = &dev->subdevices[0];
-       if (!board->n_aichan_se) {
-               s->type = COMEDI_SUBD_UNUSED;
+       s->type         = COMEDI_SUBD_AI;
+       s->subdev_flags = SDF_READABLE;
+       if (check_single_ended(dev->iobase)) {
+               s->n_chan       = 16;
+               s->subdev_flags |= SDF_COMMON | SDF_GROUND;
        } else {
-               s->type = COMEDI_SUBD_AI;
-               s->subdev_flags = SDF_READABLE;
-               if (check_single_ended(dev->iobase)) {
-                       s->n_chan = board->n_aichan_se;
-                       s->subdev_flags |= SDF_COMMON | SDF_GROUND;
-               } else {
-                       s->n_chan = board->n_aichan_diff;
-                       s->subdev_flags |= SDF_DIFF;
-               }
-               s->maxdata = board->ai_maxdata;
-
-               pcl818_set_ai_range_table(dev, s, it);
-
-               s->insn_read = pcl818_ai_insn_read;
-               if (dev->irq) {
-                       dev->read_subdev = s;
-                       s->subdev_flags |= SDF_CMD_READ;
-                       s->len_chanlist = s->n_chan;
-                       s->do_cmdtest = ai_cmdtest;
-                       s->do_cmd = ai_cmd;
-                       s->cancel = pcl818_ai_cancel;
-               }
+               s->n_chan       = 8;
+               s->subdev_flags |= SDF_DIFF;
+       }
+       s->maxdata      = board->ai_maxdata;
+
+       pcl818_set_ai_range_table(dev, s, it);
+
+       s->insn_read    = pcl818_ai_insn_read;
+       if (dev->irq) {
+               dev->read_subdev = s;
+               s->subdev_flags |= SDF_CMD_READ;
+               s->len_chanlist = s->n_chan;
+               s->do_cmdtest   = ai_cmdtest;
+               s->do_cmd       = ai_cmd;
+               s->cancel       = pcl818_ai_cancel;
        }
 
        s = &dev->subdevices[1];