The 64 channel "hc" type boards do not support common mode analog
inputs all the other boards do.
Remove the unnecessary member from the boardinfo and use the
'has_64_ai_chan' member to determine if the SDF_COMMON flag needs
to be set for the subdevice.
Signed-off-by: H Hartley Sweeten <hswee...@visionengravers.com>
Cc: Ian Abbott <abbo...@mev.co.uk>
Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/staging/comedi/drivers/das1800.c | 19 +------------------
1 file changed, 1 insertion(+), 18 deletions(-)
diff --git a/drivers/staging/comedi/drivers/das1800.c
b/drivers/staging/comedi/drivers/das1800.c
index 1b0eb6f..69680ea 100644
--- a/drivers/staging/comedi/drivers/das1800.c
+++ b/drivers/staging/comedi/drivers/das1800.c
@@ -205,7 +205,6 @@ struct das1800_board {
const char *name;
int ai_speed; /* max conversion period in nanoseconds */
int resolution; /* bits of ai resolution */
- int common; /* supports AREF_COMMON flag */
int do_n_chan; /* number of digital output channels */
int ao_ability; /* 0 == no analog out, 1 == basic analog out, 2
== waveform analog out */
int ao_n_chan; /* number of analog out channels */
@@ -222,14 +221,12 @@ static const struct das1800_board das1800_boards[] = {
.name = "das-1701st",
.ai_speed = 6250,
.resolution = 12,
- .common = 1,
.do_n_chan = 4,
.range_ai = &range_ai_das1801,
}, {
.name = "das-1701st-da",
.ai_speed = 6250,
.resolution = 12,
- .common = 1,
.do_n_chan = 4,
.ao_ability = 1,
.ao_n_chan = 4,
@@ -238,14 +235,12 @@ static const struct das1800_board das1800_boards[] = {
.name = "das-1702st",
.ai_speed = 6250,
.resolution = 12,
- .common = 1,
.do_n_chan = 4,
.range_ai = &range_ai_das1802,
}, {
.name = "das-1702st-da",
.ai_speed = 6250,
.resolution = 12,
- .common = 1,
.do_n_chan = 4,
.ao_ability = 1,
.ao_n_chan = 4,
@@ -254,14 +249,12 @@ static const struct das1800_board das1800_boards[] = {
.name = "das-1702hr",
.ai_speed = 20000,
.resolution = 16,
- .common = 1,
.do_n_chan = 4,
.range_ai = &range_ai_das1802,
}, {
.name = "das-1702hr-da",
.ai_speed = 20000,
.resolution = 16,
- .common = 1,
.do_n_chan = 4,
.ao_ability = 1,
.ao_n_chan = 2,
@@ -270,7 +263,6 @@ static const struct das1800_board das1800_boards[] = {
.name = "das-1701ao",
.ai_speed = 6250,
.resolution = 12,
- .common = 1,
.do_n_chan = 4,
.ao_ability = 2,
.ao_n_chan = 2,
@@ -279,7 +271,6 @@ static const struct das1800_board das1800_boards[] = {
.name = "das-1702ao",
.ai_speed = 6250,
.resolution = 12,
- .common = 1,
.do_n_chan = 4,
.ao_ability = 2,
.ao_n_chan = 2,
@@ -288,14 +279,12 @@ static const struct das1800_board das1800_boards[] = {
.name = "das-1801st",
.ai_speed = 3000,
.resolution = 12,
- .common = 1,
.do_n_chan = 4,
.range_ai = &range_ai_das1801,
}, {
.name = "das-1801st-da",
.ai_speed = 3000,
.resolution = 12,
- .common = 1,
.do_n_chan = 4,
.ao_ability = 1,
.ao_n_chan = 4,
@@ -304,14 +293,12 @@ static const struct das1800_board das1800_boards[] = {
.name = "das-1802st",
.ai_speed = 3000,
.resolution = 12,
- .common = 1,
.do_n_chan = 4,
.range_ai = &range_ai_das1802,
}, {
.name = "das-1802st-da",
.ai_speed = 3000,
.resolution = 12,
- .common = 1,
.do_n_chan = 4,
.ao_ability = 1,
.ao_n_chan = 4,
@@ -320,14 +307,12 @@ static const struct das1800_board das1800_boards[] = {
.name = "das-1802hr",
.ai_speed = 10000,
.resolution = 16,
- .common = 1,
.do_n_chan = 4,
.range_ai = &range_ai_das1802,
}, {
.name = "das-1802hr-da",
.ai_speed = 10000,
.resolution = 16,
- .common = 1,
.do_n_chan = 4,
.ao_ability = 1,
.ao_n_chan = 2,
@@ -354,7 +339,6 @@ static const struct das1800_board das1800_boards[] = {
.name = "das-1801ao",
.ai_speed = 3000,
.resolution = 12,
- .common = 1,
.do_n_chan = 4,
.ao_ability = 2,
.ao_n_chan = 2,
@@ -363,7 +347,6 @@ static const struct das1800_board das1800_boards[] = {
.name = "das-1802ao",
.ai_speed = 3000,
.resolution = 12,
- .common = 1,
.do_n_chan = 4,
.ao_ability = 2,
.ao_n_chan = 2,
@@ -1305,7 +1288,7 @@ static int das1800_attach(struct comedi_device *dev,
s = &dev->subdevices[0];
s->type = COMEDI_SUBD_AI;
s->subdev_flags = SDF_READABLE | SDF_DIFF | SDF_GROUND;
- if (board->common)
+ if (!board->has_64_ai_chan)
s->subdev_flags |= SDF_COMMON;
s->n_chan = (board->has_64_ai_chan) ? 64 : 16;
s->maxdata = (1 << board->resolution) - 1;
--
2.6.3
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