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staging: comedi: das16: change boardinfo 'ai_nbits' to 'ai_maxdata'

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The subdevice functions that used this boardinfo can use the subdevice
's->maxdata' value instead. Tidy up those functions.

Change the boardinfo so that the calculation is not needed during 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 2013-07-29 13:49:21 -07:00 committed by Greg Kroah-Hartman
parent 465e25b5e1
commit 0dc7c5db13
1 changed files with 36 additions and 35 deletions
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71
drivers/staging/comedi/drivers/das16.c
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@ -338,7 +338,7 @@ struct munge_info {
struct das16_board {
const char *name;
unsigned int ai_nbits;
unsigned int ai_maxdata;
unsigned int ai_speed; /* max conversion speed in nanosec */
unsigned int ai_pg;
void *ao;
@ -668,7 +668,6 @@ static int das16_ai_insn_read(struct comedi_device *dev,
int i, n;
int range;
int chan;
int msb, lsb;
/* disable interrupts and pacing */
devpriv->control_state &= ~DAS16_INTE & ~DMA_ENABLE & ~PACING_MASK;
@ -687,6 +686,8 @@ static int das16_ai_insn_read(struct comedi_device *dev,
}
for (n = 0; n < insn->n; n++) {
unsigned int val;
/* trigger conversion */
outb_p(0, dev->iobase + DAS16_TRIG);
@ -698,13 +699,14 @@ static int das16_ai_insn_read(struct comedi_device *dev,
printk("das16: timeout\n");
return -ETIME;
}
msb = inb(dev->iobase + DAS16_AI_MSB);
lsb = inb(dev->iobase + DAS16_AI_LSB);
if (board->ai_nbits == 12)
data[n] = ((lsb >> 4) & 0xf) | (msb << 4);
else
data[n] = lsb | (msb << 8);
val = inb(dev->iobase + DAS16_AI_MSB) << 8;
val |= inb(dev->iobase + DAS16_AI_LSB);
if (s->maxdata == 0x0fff)
data[n] >>= 4;
val &= s->maxdata;
data[n] = val;
}
return n;
@ -957,15 +959,14 @@ static void das16_ai_munge(struct comedi_device *dev,
unsigned int num_bytes,
unsigned int start_chan_index)
{
const struct das16_board *board = comedi_board(dev);
unsigned int i, num_samples = num_bytes / sizeof(short);
short *data = array;
for (i = 0; i < num_samples; i++) {
data[i] = le16_to_cpu(data[i]);
if (board->ai_nbits == 12)
data[i] = (data[i] >> 4) & 0xfff;
if (s->maxdata == 0x0fff)
data[i] >>= 4;
data[i] &= s->maxdata;
}
}
@ -1112,7 +1113,7 @@ static int das16_attach(struct comedi_device *dev, struct comedi_devconfig *it)
s->n_chan = 8;
}
s->len_chanlist = s->n_chan;
s->maxdata = (1 << board->ai_nbits) - 1;
s->maxdata = board->ai_maxdata;
if (devpriv->user_ai_range_table) { /* user defined ai range */
s->range_table = devpriv->user_ai_range_table;
} else if (devpriv->ai_unipolar) {
@ -1228,7 +1229,7 @@ static void das16_detach(struct comedi_device *dev)
static const struct das16_board das16_boards[] = {
{
.name = "das-16",
.ai_nbits = 12,
.ai_maxdata = 0x0fff,
.ai_speed = 15000,
.ai_pg = das16_pg_none,
.ao = das16_ao_winsn,
@ -1241,7 +1242,7 @@ static const struct das16_board das16_boards[] = {
.id = 0x00,
}, {
.name = "das-16g",
.ai_nbits = 12,
.ai_maxdata = 0x0fff,
.ai_speed = 15000,
.ai_pg = das16_pg_none,
.ao = das16_ao_winsn,
@ -1254,7 +1255,7 @@ static const struct das16_board das16_boards[] = {
.id = 0x00,
}, {
.name = "das-16f",
.ai_nbits = 12,
.ai_maxdata = 0x0fff,
.ai_speed = 8500,
.ai_pg = das16_pg_none,
.ao = das16_ao_winsn,
@ -1267,7 +1268,7 @@ static const struct das16_board das16_boards[] = {
.id = 0x00,
}, {
.name = "cio-das16",
.ai_nbits = 12,
.ai_maxdata = 0x0fff,
.ai_speed = 20000,
.ai_pg = das16_pg_none,
.ao = das16_ao_winsn,
@ -1280,7 +1281,7 @@ static const struct das16_board das16_boards[] = {
.id = 0x80,
}, {
.name = "cio-das16/f",
.ai_nbits = 12,
.ai_maxdata = 0x0fff,
.ai_speed = 10000,
.ai_pg = das16_pg_none,
.ao = das16_ao_winsn,
@ -1293,7 +1294,7 @@ static const struct das16_board das16_boards[] = {
.id = 0x80,
}, {
.name = "cio-das16/jr",
.ai_nbits = 12,
.ai_maxdata = 0x0fff,
.ai_speed = 7692,
.ai_pg = das16_pg_16jr,
.ao = NULL,
@ -1305,7 +1306,7 @@ static const struct das16_board das16_boards[] = {
.id = 0x00,
}, {
.name = "pc104-das16jr",
.ai_nbits = 12,
.ai_maxdata = 0x0fff,
.ai_speed = 3300,
.ai_pg = das16_pg_16jr,
.ao = NULL,
@ -1317,7 +1318,7 @@ static const struct das16_board das16_boards[] = {
.id = 0x00,
}, {
.name = "cio-das16jr/16",
.ai_nbits = 16,
.ai_maxdata = 0xffff,
.ai_speed = 10000,
.ai_pg = das16_pg_16jr_16,
.ao = NULL,
@ -1329,7 +1330,7 @@ static const struct das16_board das16_boards[] = {
.id = 0x00,
}, {
.name = "pc104-das16jr/16",
.ai_nbits = 16,
.ai_maxdata = 0xffff,
.ai_speed = 10000,
.ai_pg = das16_pg_16jr_16,
.ao = NULL,
@ -1341,7 +1342,7 @@ static const struct das16_board das16_boards[] = {
.id = 0x00,
}, {
.name = "das-1201",
.ai_nbits = 12,
.ai_maxdata = 0x0fff,
.ai_speed = 20000,
.ai_pg = das16_pg_none,
.ao = NULL,
@ -1353,7 +1354,7 @@ static const struct das16_board das16_boards[] = {
.id = 0x20,
}, {
.name = "das-1202",
.ai_nbits = 12,
.ai_maxdata = 0x0fff,
.ai_speed = 10000,
.ai_pg = das16_pg_none,
.ao = NULL,
@ -1365,7 +1366,7 @@ static const struct das16_board das16_boards[] = {
.id = 0x20,
}, {
.name = "das-1401",
.ai_nbits = 12,
.ai_maxdata = 0x0fff,
.ai_speed = 10000,
.ai_pg = das16_pg_1601,
.ao = NULL,
@ -1377,7 +1378,7 @@ static const struct das16_board das16_boards[] = {
.id = 0xc0,
}, {
.name = "das-1402",
.ai_nbits = 12,
.ai_maxdata = 0x0fff,
.ai_speed = 10000,
.ai_pg = das16_pg_1602,
.ao = NULL,
@ -1389,7 +1390,7 @@ static const struct das16_board das16_boards[] = {
.id = 0xc0,
}, {
.name = "das-1601",
.ai_nbits = 12,
.ai_maxdata = 0x0fff,
.ai_speed = 10000,
.ai_pg = das16_pg_1601,
.ao = das16_ao_winsn,
@ -1402,7 +1403,7 @@ static const struct das16_board das16_boards[] = {
.id = 0xc0,
}, {
.name = "das-1602",
.ai_nbits = 12,
.ai_maxdata = 0x0fff,
.ai_speed = 10000,
.ai_pg = das16_pg_1602,
.ao = das16_ao_winsn,
@ -1415,7 +1416,7 @@ static const struct das16_board das16_boards[] = {
.id = 0xc0,
}, {
.name = "cio-das1401/12",
.ai_nbits = 12,
.ai_maxdata = 0x0fff,
.ai_speed = 6250,
.ai_pg = das16_pg_1601,
.ao = NULL,
@ -1427,7 +1428,7 @@ static const struct das16_board das16_boards[] = {
.id = 0xc0,
}, {
.name = "cio-das1402/12",
.ai_nbits = 12,
.ai_maxdata = 0x0fff,
.ai_speed = 6250,
.ai_pg = das16_pg_1602,
.ao = NULL,
@ -1439,7 +1440,7 @@ static const struct das16_board das16_boards[] = {
.id = 0xc0,
}, {
.name = "cio-das1402/16",
.ai_nbits = 16,
.ai_maxdata = 0xffff,
.ai_speed = 10000,
.ai_pg = das16_pg_1602,
.ao = NULL,
@ -1451,7 +1452,7 @@ static const struct das16_board das16_boards[] = {
.id = 0xc0,
}, {
.name = "cio-das1601/12",
.ai_nbits = 12,
.ai_maxdata = 0x0fff,
.ai_speed = 6250,
.ai_pg = das16_pg_1601,
.ao = das16_ao_winsn,
@ -1464,7 +1465,7 @@ static const struct das16_board das16_boards[] = {
.id = 0xc0,
}, {
.name = "cio-das1602/12",
.ai_nbits = 12,
.ai_maxdata = 0x0fff,
.ai_speed = 10000,
.ai_pg = das16_pg_1602,
.ao = das16_ao_winsn,
@ -1477,7 +1478,7 @@ static const struct das16_board das16_boards[] = {
.id = 0xc0,
}, {
.name = "cio-das1602/16",
.ai_nbits = 16,
.ai_maxdata = 0xffff,
.ai_speed = 10000,
.ai_pg = das16_pg_1602,
.ao = das16_ao_winsn,
@ -1490,7 +1491,7 @@ static const struct das16_board das16_boards[] = {
.id = 0xc0,
}, {
.name = "cio-das16/330",
.ai_nbits = 12,
.ai_maxdata = 0x0fff,
.ai_speed = 3030,
.ai_pg = das16_pg_16jr,
.ao = NULL,