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staging: comedi: adv_pci_dio: refactor 'io_access' boardinfo

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The boards supported by this driver either use 8-bit or 16-bit I/O. The
'io_access' member of the boardinfo is used by the (*auto_attach) to
determine which (*insn_bits) function to use.

Simplify the boardinfo a bit by refactoring the 'io_access' member into
a bit-field flag 'is_16bit'. Use the new flag and remove the switch ()
code in the (*auto_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 2015-11-18 10:07:09 -07:00 committed by Greg Kroah-Hartman
parent f5ceac9baa
commit 3cdddd6338
1 changed files with 13 additions and 44 deletions
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57
drivers/staging/comedi/drivers/adv_pci_dio.c
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@ -43,11 +43,6 @@ enum hw_cards_id {
TYPE_PCI1762
};
/* which I/O instructions to use */
enum hw_io_access {
IO_8b, IO_16b
};
#define MAX_DI_SUBDEVS 2 /* max number of DI subdevices per card */
#define MAX_DO_SUBDEVS 2 /* max number of DO subdevices per card */
#define MAX_DIO_SUBDEVG 2 /* max number of DIO subdevices group per
@ -147,7 +142,7 @@ struct dio_boardtype {
struct diosubd_data sdio[MAX_DIO_SUBDEVG]; /* DIO 8255 chans */
struct diosubd_data boardid; /* card supports board ID switch */
unsigned long timer_regbase;
enum hw_io_access io_access;
unsigned int is_16bit:1;
};
static const struct dio_boardtype boardtypes[] = {
@ -160,7 +155,6 @@ static const struct dio_boardtype boardtypes[] = {
.sdo[0] = { 16, PCI1730_DO, 2, },
.sdo[1] = { 16, PCI1730_IDO, 2, },
.boardid = { 4, PCI173x_BOARDID, 1, },
.io_access = IO_8b,
},
[TYPE_PCI1733] = {
.name = "pci1733",
@ -168,7 +162,6 @@ static const struct dio_boardtype boardtypes[] = {
.nsubdevs = 2,
.sdi[1] = { 32, PCI1733_IDI, 4, },
.boardid = { 4, PCI173x_BOARDID, 1, },
.io_access = IO_8b,
},
[TYPE_PCI1734] = {
.name = "pci1734",
@ -176,7 +169,6 @@ static const struct dio_boardtype boardtypes[] = {
.nsubdevs = 2,
.sdo[1] = { 32, PCI1734_IDO, 4, },
.boardid = { 4, PCI173x_BOARDID, 1, },
.io_access = IO_8b,
},
[TYPE_PCI1735] = {
.name = "pci1735",
@ -186,7 +178,6 @@ static const struct dio_boardtype boardtypes[] = {
.sdo[0] = { 32, PCI1735_DO, 4, },
.boardid = { 4, PCI1735_BOARDID, 1, },
.timer_regbase = PCI1735_C8254,
.io_access = IO_8b,
},
[TYPE_PCI1736] = {
.name = "pci1736",
@ -195,14 +186,12 @@ static const struct dio_boardtype boardtypes[] = {
.sdi[1] = { 16, PCI1736_IDI, 2, },
.sdo[1] = { 16, PCI1736_IDO, 2, },
.boardid = { 4, PCI1736_BOARDID, 1, },
.io_access = IO_8b,
},
[TYPE_PCI1739] = {
.name = "pci1739",
.cardtype = TYPE_PCI1739,
.nsubdevs = 2,
.sdio[0] = { 48, PCI1739_DIO, 2, },
.io_access = IO_8b,
},
[TYPE_PCI1750] = {
.name = "pci1750",
@ -210,7 +199,6 @@ static const struct dio_boardtype boardtypes[] = {
.nsubdevs = 2,
.sdi[1] = { 16, PCI1750_IDI, 2, },
.sdo[1] = { 16, PCI1750_IDO, 2, },
.io_access = IO_8b,
},
[TYPE_PCI1751] = {
.name = "pci1751",
@ -218,7 +206,6 @@ static const struct dio_boardtype boardtypes[] = {
.nsubdevs = 3,
.sdio[0] = { 48, PCI1751_DIO, 2, },
.timer_regbase = PCI1751_CNT,
.io_access = IO_8b,
},
[TYPE_PCI1752] = {
.name = "pci1752",
@ -227,14 +214,13 @@ static const struct dio_boardtype boardtypes[] = {
.sdo[0] = { 32, PCI1752_IDO, 2, },
.sdo[1] = { 32, PCI1752_IDO2, 2, },
.boardid = { 4, PCI175x_BOARDID, 1, },
.io_access = IO_16b,
.is_16bit = 1,
},
[TYPE_PCI1753] = {
.name = "pci1753",
.cardtype = TYPE_PCI1753,
.nsubdevs = 4,
.sdio[0] = { 96, PCI1753_DIO, 4, },
.io_access = IO_8b,
},
[TYPE_PCI1753E] = {
.name = "pci1753e",
@ -242,7 +228,6 @@ static const struct dio_boardtype boardtypes[] = {
.nsubdevs = 8,
.sdio[0] = { 96, PCI1753_DIO, 4, },
.sdio[1] = { 96, PCI1753E_DIO, 4, },
.io_access = IO_8b,
},
[TYPE_PCI1754] = {
.name = "pci1754",
@ -251,7 +236,7 @@ static const struct dio_boardtype boardtypes[] = {
.sdi[0] = { 32, PCI1754_IDI, 2, },
.sdi[1] = { 32, PCI1754_IDI2, 2, },
.boardid = { 4, PCI175x_BOARDID, 1, },
.io_access = IO_16b,
.is_16bit = 1,
},
[TYPE_PCI1756] = {
.name = "pci1756",
@ -260,7 +245,7 @@ static const struct dio_boardtype boardtypes[] = {
.sdi[1] = { 32, PCI1756_IDI, 2, },
.sdo[1] = { 32, PCI1756_IDO, 2, },
.boardid = { 4, PCI175x_BOARDID, 1, },
.io_access = IO_16b,
.is_16bit = 1,
},
[TYPE_PCI1762] = {
.name = "pci1762",
@ -269,7 +254,7 @@ static const struct dio_boardtype boardtypes[] = {
.sdi[1] = { 16, PCI1762_IDI, 1, },
.sdo[1] = { 16, PCI1762_RO, 1, },
.boardid = { 4, PCI1762_BOARDID, 1, },
.io_access = IO_16b,
.is_16bit = 1,
},
};
@ -509,14 +494,9 @@ static int pci_dio_auto_attach(struct comedi_device *dev,
s->n_chan = d->chans;
s->maxdata = 1;
s->range_table = &range_digital;
switch (board->io_access) {
case IO_8b:
s->insn_bits = pci_dio_insn_bits_di_b;
break;
case IO_16b:
s->insn_bits = pci_dio_insn_bits_di_w;
break;
}
s->insn_bits = board->is_16bit
? pci_dio_insn_bits_di_w
: pci_dio_insn_bits_di_b;
s->private = (void *)d;
}
}
@ -530,14 +510,9 @@ static int pci_dio_auto_attach(struct comedi_device *dev,
s->n_chan = d->chans;
s->maxdata = 1;
s->range_table = &range_digital;
switch (board->io_access) {
case IO_8b:
s->insn_bits = pci_dio_insn_bits_do_b;
break;
case IO_16b:
s->insn_bits = pci_dio_insn_bits_do_w;
break;
}
s->insn_bits = board->is_16bit
? pci_dio_insn_bits_do_w
: pci_dio_insn_bits_do_b;
s->private = (void *)d;
}
}
@ -561,14 +536,8 @@ static int pci_dio_auto_attach(struct comedi_device *dev,
s->n_chan = d->chans;
s->maxdata = 1;
s->range_table = &range_digital;
switch (board->io_access) {
case IO_8b:
s->insn_bits = pci_dio_insn_bits_di_b;
break;
case IO_16b:
s->insn_bits = pci_dio_insn_bits_di_w;
break;
}
s->insn_bits = board->is_16bit ? pci_dio_insn_bits_di_w
: pci_dio_insn_bits_di_b;
s->private = (void *)d;
}