[PATCH 07/38] staging: comedi: das16: all supported board have digital outputs
H Hartley Sweeten
hsweeten at visionengravers.com
Mon Jul 29 20:54:39 UTC 2013
All the boards supported by this driver have digital outputs and all
of then use the same function to handle the (*insn_bits) for the
subdevice.
Remove the 'do_' member from the boardinfo and always initialize the
digital output subdevice during the board attach.
Tidy up the subdevice init a bit as well as the (*insn_bits) function.
Remove SDF_READABLE from the subdev_flags. This is a pure digital output
subdevice and the outputs are not readable.
Signed-off-by: H Hartley Sweeten <hsweeten at visionengravers.com>
Cc: Ian Abbott <abbotti at mev.co.uk>
Cc: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
---
drivers/staging/comedi/drivers/das16.c | 74 +++++++++++-----------------------
1 file changed, 24 insertions(+), 50 deletions(-)
diff --git a/drivers/staging/comedi/drivers/das16.c b/drivers/staging/comedi/drivers/das16.c
index 3528c82..22d2bf4 100644
--- a/drivers/staging/comedi/drivers/das16.c
+++ b/drivers/staging/comedi/drivers/das16.c
@@ -343,7 +343,6 @@ struct das16_board {
unsigned int ai_pg;
void *ao;
unsigned int ao_nbits;
- void *do_;
unsigned int i8255_offset;
unsigned int i8254_offset;
@@ -721,22 +720,22 @@ static int das16_di_insn_bits(struct comedi_device *dev,
return insn->n;
}
-static int das16_do_wbits(struct comedi_device *dev, struct comedi_subdevice *s,
- struct comedi_insn *insn, unsigned int *data)
+static int das16_do_insn_bits(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
{
- unsigned int wbits;
-
- /* only set bits that have been masked */
- data[0] &= 0xf;
- wbits = s->state;
- /* zero bits that have been masked */
- wbits &= ~data[0];
- /* set masked bits */
- wbits |= data[0] & data[1];
- s->state = wbits;
- data[1] = wbits;
+ unsigned int mask = data[0];
+ unsigned int bits = data[1];
- outb(s->state, dev->iobase + DAS16_DIO);
+ if (mask) {
+ s->state &= ~mask;
+ s->state |= (bits & mask);
+
+ outb(s->state, dev->iobase + DAS16_DIO);
+ }
+
+ data[1] = s->state;
return insn->n;
}
@@ -1155,20 +1154,17 @@ static int das16_attach(struct comedi_device *dev, struct comedi_devconfig *it)
s->range_table = &range_digital;
s->insn_bits = das16_di_insn_bits;
+ /* Digital Output subdevice */
s = &dev->subdevices[3];
- /* do */
- if (board->do_) {
- s->type = COMEDI_SUBD_DO;
- s->subdev_flags = SDF_WRITABLE | SDF_READABLE;
- s->n_chan = 4;
- s->maxdata = 1;
- s->range_table = &range_digital;
- s->insn_bits = board->do_;
- /* initialize digital output lines */
- outb(s->state, dev->iobase + DAS16_DIO);
- } else {
- s->type = COMEDI_SUBD_UNUSED;
- }
+ s->type = COMEDI_SUBD_DO;
+ s->subdev_flags = SDF_WRITABLE;
+ s->n_chan = 4;
+ s->maxdata = 1;
+ s->range_table = &range_digital;
+ s->insn_bits = das16_do_insn_bits;
+
+ /* initialize digital output lines */
+ outb(s->state, dev->iobase + DAS16_DIO);
s = &dev->subdevices[4];
/* 8255 */
@@ -1227,7 +1223,6 @@ static const struct das16_board das16_boards[] = {
.ai_pg = das16_pg_none,
.ao = das16_ao_winsn,
.ao_nbits = 12,
- .do_ = das16_do_wbits,
.i8255_offset = 0x10,
.i8254_offset = 0x0c,
.size = 0x14,
@@ -1239,7 +1234,6 @@ static const struct das16_board das16_boards[] = {
.ai_pg = das16_pg_none,
.ao = das16_ao_winsn,
.ao_nbits = 12,
- .do_ = das16_do_wbits,
.i8255_offset = 0x10,
.i8254_offset = 0x0c,
.size = 0x14,
@@ -1251,7 +1245,6 @@ static const struct das16_board das16_boards[] = {
.ai_pg = das16_pg_none,
.ao = das16_ao_winsn,
.ao_nbits = 12,
- .do_ = das16_do_wbits,
.i8255_offset = 0x10,
.i8254_offset = 0x0c,
.size = 0x14,
@@ -1263,7 +1256,6 @@ static const struct das16_board das16_boards[] = {
.ai_pg = das16_pg_none,
.ao = das16_ao_winsn,
.ao_nbits = 12,
- .do_ = das16_do_wbits,
.i8255_offset = 0x10,
.i8254_offset = 0x0c,
.size = 0x14,
@@ -1275,7 +1267,6 @@ static const struct das16_board das16_boards[] = {
.ai_pg = das16_pg_none,
.ao = das16_ao_winsn,
.ao_nbits = 12,
- .do_ = das16_do_wbits,
.i8255_offset = 0x10,
.i8254_offset = 0x0c,
.size = 0x14,
@@ -1286,7 +1277,6 @@ static const struct das16_board das16_boards[] = {
.ai_speed = 7692,
.ai_pg = das16_pg_16jr,
.ao = NULL,
- .do_ = das16_do_wbits,
.i8255_offset = 0,
.i8254_offset = 0x0c,
.size = 0x10,
@@ -1297,7 +1287,6 @@ static const struct das16_board das16_boards[] = {
.ai_speed = 3300,
.ai_pg = das16_pg_16jr,
.ao = NULL,
- .do_ = das16_do_wbits,
.i8255_offset = 0,
.i8254_offset = 0x0c,
.size = 0x10,
@@ -1308,7 +1297,6 @@ static const struct das16_board das16_boards[] = {
.ai_speed = 10000,
.ai_pg = das16_pg_16jr_16,
.ao = NULL,
- .do_ = das16_do_wbits,
.i8255_offset = 0,
.i8254_offset = 0x0c,
.size = 0x10,
@@ -1319,7 +1307,6 @@ static const struct das16_board das16_boards[] = {
.ai_speed = 10000,
.ai_pg = das16_pg_16jr_16,
.ao = NULL,
- .do_ = das16_do_wbits,
.i8255_offset = 0,
.i8254_offset = 0x0c,
.size = 0x10,
@@ -1330,7 +1317,6 @@ static const struct das16_board das16_boards[] = {
.ai_speed = 20000,
.ai_pg = das16_pg_none,
.ao = NULL,
- .do_ = das16_do_wbits,
.i8255_offset = 0x400,
.i8254_offset = 0x0c,
.size = 0x408,
@@ -1341,7 +1327,6 @@ static const struct das16_board das16_boards[] = {
.ai_speed = 10000,
.ai_pg = das16_pg_none,
.ao = NULL,
- .do_ = das16_do_wbits,
.i8255_offset = 0x400,
.i8254_offset = 0x0c,
.size = 0x408,
@@ -1352,7 +1337,6 @@ static const struct das16_board das16_boards[] = {
.ai_speed = 10000,
.ai_pg = das16_pg_1601,
.ao = NULL,
- .do_ = das16_do_wbits,
.i8255_offset = 0x0,
.i8254_offset = 0x0c,
.size = 0x408,
@@ -1363,7 +1347,6 @@ static const struct das16_board das16_boards[] = {
.ai_speed = 10000,
.ai_pg = das16_pg_1602,
.ao = NULL,
- .do_ = das16_do_wbits,
.i8255_offset = 0x0,
.i8254_offset = 0x0c,
.size = 0x408,
@@ -1375,7 +1358,6 @@ static const struct das16_board das16_boards[] = {
.ai_pg = das16_pg_1601,
.ao = das16_ao_winsn,
.ao_nbits = 12,
- .do_ = das16_do_wbits,
.i8255_offset = 0x400,
.i8254_offset = 0x0c,
.size = 0x408,
@@ -1387,7 +1369,6 @@ static const struct das16_board das16_boards[] = {
.ai_pg = das16_pg_1602,
.ao = das16_ao_winsn,
.ao_nbits = 12,
- .do_ = das16_do_wbits,
.i8255_offset = 0x400,
.i8254_offset = 0x0c,
.size = 0x408,
@@ -1398,7 +1379,6 @@ static const struct das16_board das16_boards[] = {
.ai_speed = 6250,
.ai_pg = das16_pg_1601,
.ao = NULL,
- .do_ = das16_do_wbits,
.i8255_offset = 0,
.i8254_offset = 0x0c,
.size = 0x408,
@@ -1409,7 +1389,6 @@ static const struct das16_board das16_boards[] = {
.ai_speed = 6250,
.ai_pg = das16_pg_1602,
.ao = NULL,
- .do_ = das16_do_wbits,
.i8255_offset = 0,
.i8254_offset = 0x0c,
.size = 0x408,
@@ -1420,7 +1399,6 @@ static const struct das16_board das16_boards[] = {
.ai_speed = 10000,
.ai_pg = das16_pg_1602,
.ao = NULL,
- .do_ = das16_do_wbits,
.i8255_offset = 0,
.i8254_offset = 0x0c,
.size = 0x408,
@@ -1432,7 +1410,6 @@ static const struct das16_board das16_boards[] = {
.ai_pg = das16_pg_1601,
.ao = das16_ao_winsn,
.ao_nbits = 12,
- .do_ = das16_do_wbits,
.i8255_offset = 0x400,
.i8254_offset = 0x0c,
.size = 0x408,
@@ -1444,7 +1421,6 @@ static const struct das16_board das16_boards[] = {
.ai_pg = das16_pg_1602,
.ao = das16_ao_winsn,
.ao_nbits = 12,
- .do_ = das16_do_wbits,
.i8255_offset = 0x400,
.i8254_offset = 0x0c,
.size = 0x408,
@@ -1456,7 +1432,6 @@ static const struct das16_board das16_boards[] = {
.ai_pg = das16_pg_1602,
.ao = das16_ao_winsn,
.ao_nbits = 12,
- .do_ = das16_do_wbits,
.i8255_offset = 0x400,
.i8254_offset = 0x0c,
.size = 0x408,
@@ -1467,7 +1442,6 @@ static const struct das16_board das16_boards[] = {
.ai_speed = 3030,
.ai_pg = das16_pg_16jr,
.ao = NULL,
- .do_ = das16_do_wbits,
.i8255_offset = 0,
.i8254_offset = 0x0c,
.size = 0x14,
--
1.8.3.2
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