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Commit f0e32df3 authored by H Hartley Sweeten's avatar H Hartley Sweeten Committed by Greg Kroah-Hartman
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staging: comedi: ii_pci20kc.c: tidy up the subdevice module init 

Use the carrier board id to determine if a module is installed for
a given subdevice.

Consolidate the module init code into ii20k_init_module().

For aesthetic reasons, rename the subdevice functions to remove
'pci' from them.
Signed-off-by: default avatarH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 9abeb196
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Showing with 104 additions and 93 deletions
drivers/staging/comedi/drivers/ii_pci20kc.c
View file @ f0e32df3
......@@ -83,6 +83,7 @@ options for PCI-20341M:
/*
* Register I/O map
*/
#define II20K_MOD_OFFSET 0x100
#define II20K_ID_REG 0x00
#define II20K_ID_MOD1_EMPTY (1 << 7)
#define II20K_ID_MOD2_EMPTY (1 << 6)
......@@ -120,8 +121,6 @@ options for PCI-20341M:
#define PCI20006_ID 0xe3
#define PCI20xxx_EMPTY_ID 0xff
#define PCI20000_OFFSET 0x100
#define PCI20006_LCHAN0 0x0d
#define PCI20006_STROBE0 0x0b
#define PCI20006_LCHAN1 0x15
......@@ -130,7 +129,6 @@ options for PCI-20341M:
#define PCI20341_INIT 0x04
#define PCI20341_REPMODE 0x00 /* single shot mode */
#define PCI20341_PACER 0x00 /* Hardware Pacer disabled */
#define PCI20341_CHAN_NR 0x04 /* number of input channels */
#define PCI20341_CONFIG_REG 0x10
#define PCI20341_MOD_STATUS 0x01
#define PCI20341_OPT_REG 0x11
......@@ -164,13 +162,13 @@ static const struct comedi_lrange range_bipolar0_025 = {
}
};
static const struct comedi_lrange *pci20006_range_list[] = {
static const struct comedi_lrange *ii20k_ao_ranges[] = {
&range_bipolar10,
&range_unipolar10,
&range_bipolar5,
};
static const struct comedi_lrange *const pci20341_ranges[] = {
static const struct comedi_lrange *const ii20k_ai_ranges[] = {
&range_bipolar5,
&range_bipolar0_5,
&range_bipolar0_05,
......@@ -200,11 +198,10 @@ struct pci20xxx_private {
void __iomem *ioaddr;
};
/* pci20006m */
static int pci20006_insn_read(struct comedi_device *dev,
static int ii20k_ao_insn_read(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
struct comedi_insn *insn,
unsigned int *data)
{
union pci20xxx_subdev_private *sdp = s->private;
......@@ -213,9 +210,10 @@ static int pci20006_insn_read(struct comedi_device *dev,
return 1;
}
static int pci20006_insn_write(struct comedi_device *dev,
static int ii20k_ao_insn_write(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
struct comedi_insn *insn,
unsigned int *data)
{
union pci20xxx_subdev_private *sdp = s->private;
int hi, lo;
......@@ -246,36 +244,10 @@ static int pci20006_insn_write(struct comedi_device *dev,
return 1;
}
static int pci20006_init(struct comedi_device *dev, struct comedi_subdevice *s,
int opt0, int opt1)
{
union pci20xxx_subdev_private *sdp = s->private;
if (opt0 < 0 || opt0 > 2)
opt0 = 0;
if (opt1 < 0 || opt1 > 2)
opt1 = 0;
sdp->pci20006.ao_range_list[0] = pci20006_range_list[opt0];
sdp->pci20006.ao_range_list[1] = pci20006_range_list[opt1];
/* ao subdevice */
s->type = COMEDI_SUBD_AO;
s->subdev_flags = SDF_WRITABLE;
s->n_chan = 2;
s->len_chanlist = 2;
s->insn_read = pci20006_insn_read;
s->insn_write = pci20006_insn_write;
s->maxdata = 0xffff;
s->range_table_list = sdp->pci20006.ao_range_list;
return 0;
}
/* PCI20341M */
static int pci20341_insn_read(struct comedi_device *dev,
static int ii20k_ai_insn_read(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
struct comedi_insn *insn,
unsigned int *data)
{
union pci20xxx_subdev_private *sdp = s->private;
unsigned int i = 0, j = 0;
......@@ -328,26 +300,11 @@ static int pci20341_insn_read(struct comedi_device *dev,
return i;
}
static int pci20341_init(struct comedi_device *dev, struct comedi_subdevice *s,
int opt0, int opt1)
static void ii20k_ai_init(struct comedi_device *dev,
struct comedi_subdevice *s)
{
union pci20xxx_subdev_private *sdp = s->private;
int option;
/* options handling */
if (opt0 < 0 || opt0 > 3)
opt0 = 0;
sdp->pci20341.timebase = pci20341_timebase[opt0];
sdp->pci20341.settling_time = pci20341_settling_time[opt0];
/* ai subdevice */
s->type = COMEDI_SUBD_AI;
s->subdev_flags = SDF_READABLE;
s->n_chan = PCI20341_CHAN_NR;
s->len_chanlist = PCI20341_SCANLIST;
s->insn_read = pci20341_insn_read;
s->maxdata = 0xffff;
s->range_table = pci20341_ranges[opt0];
unsigned char option;
/* depends on gain, trigger, repetition mode */
option = sdp->pci20341.timebase | PCI20341_REPMODE;
......@@ -362,7 +319,6 @@ static int pci20341_init(struct comedi_device *dev, struct comedi_subdevice *s,
writeb(sdp->pci20341.settling_time,
sdp->iobase + PCI20341_SET_TIME_REG);
/* trigger not implemented */
return 0;
}
static void ii20k_dio_config(struct comedi_device *dev,
......@@ -501,16 +457,78 @@ static int ii20k_dio_insn_bits(struct comedi_device *dev,
return insn->n;
}
static int ii20k_init_module(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_devconfig *it)
{
struct pci20xxx_private *devpriv = dev->private;
union pci20xxx_subdev_private *sdp;
unsigned int opt0 = it->options[(2 * s->index) + 2];
unsigned int opt1 = it->options[(2 * s->index) + 3];
void __iomem *iobase;
unsigned char id;
sdp = comedi_alloc_spriv(s, sizeof(*sdp));
if (!sdp)
return -ENOMEM;
iobase = devpriv->ioaddr + (s->index + 1) * II20K_MOD_OFFSET;
id = readb(iobase + II20K_ID_REG);
switch (id) {
case PCI20006_ID:
if (opt0 < 0 || opt0 > 2)
opt0 = 0;
if (opt1 < 0 || opt1 > 2)
opt1 = 0;
sdp->pci20006.iobase = iobase;
sdp->pci20006.ao_range_list[0] = ii20k_ao_ranges[opt0];
sdp->pci20006.ao_range_list[1] = ii20k_ao_ranges[opt1];
/* Analog Output subdevice */
s->type = COMEDI_SUBD_AO;
s->subdev_flags = SDF_WRITABLE;
s->n_chan = 2;
s->maxdata = 0xffff;
s->range_table_list = sdp->pci20006.ao_range_list;
s->insn_read = ii20k_ao_insn_read;
s->insn_write = ii20k_ao_insn_write;
break;
case PCI20341_ID:
if (opt0 < 0 || opt0 > 3)
opt0 = 0;
sdp->pci20341.iobase = iobase;
sdp->pci20341.timebase = pci20341_timebase[opt0];
sdp->pci20341.settling_time = pci20341_settling_time[opt0];
/* Analog Input subdevice */
s->type = COMEDI_SUBD_AI;
s->subdev_flags = SDF_READABLE;
s->n_chan = 4;
s->maxdata = 0xffff;
s->range_table = ii20k_ai_ranges[opt0];
s->insn_read = ii20k_ai_insn_read;
ii20k_ai_init(dev, s);
break;
case PCI20xxx_EMPTY_ID:
default:
s->type = COMEDI_SUBD_UNUSED;
break;
}
return 0;
}
static int pci20xxx_attach(struct comedi_device *dev,
struct comedi_devconfig *it)
{
struct pci20xxx_private *devpriv;
union pci20xxx_subdev_private *sdp;
struct comedi_subdevice *s;
unsigned char id;
bool has_dio;
int ret;
int i;
devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
if (!devpriv)
......@@ -533,38 +551,31 @@ static int pci20xxx_attach(struct comedi_device *dev,
if (ret)
return ret;
for (i = 0; i < 3; i++) {
s = &dev->subdevices[i];
sdp = comedi_alloc_spriv(s, sizeof(*sdp));
if (!sdp)
return -ENOMEM;
id = readb(devpriv->ioaddr + (i + 1) * PCI20000_OFFSET);
switch (id) {
case PCI20006_ID:
sdp->pci20006.iobase =
devpriv->ioaddr + (i + 1) * PCI20000_OFFSET;
pci20006_init(dev, s, it->options[2 * i + 2],
it->options[2 * i + 3]);
dev_info(dev->class_dev,
"PCI-20006 module in slot %d\n", i + 1);
break;
case PCI20341_ID:
sdp->pci20341.iobase =
devpriv->ioaddr + (i + 1) * PCI20000_OFFSET;
pci20341_init(dev, s, it->options[2 * i + 2],
it->options[2 * i + 3]);
dev_info(dev->class_dev,
"PCI-20341 module in slot %d\n", i + 1);
break;
default:
dev_warn(dev->class_dev,
"unknown module code 0x%02x in slot %d: module disabled\n",
id, i); /* XXX this looks like a bug! i + 1 ?? */
/* fall through */
case PCI20xxx_EMPTY_ID:
s = &dev->subdevices[0];
if (id & II20K_ID_MOD1_EMPTY) {
s->type = COMEDI_SUBD_UNUSED;
break;
} else {
ret = ii20k_init_module(dev, s, it);
if (ret)
return ret;
}
s = &dev->subdevices[1];
if (id & II20K_ID_MOD2_EMPTY) {
s->type = COMEDI_SUBD_UNUSED;
} else {
ret = ii20k_init_module(dev, s, it);
if (ret)
return ret;
}
s = &dev->subdevices[2];
if (id & II20K_ID_MOD3_EMPTY) {
s->type = COMEDI_SUBD_UNUSED;
} else {
ret = ii20k_init_module(dev, s, it);
if (ret)
return ret;
}
/* Digital I/O subdevice */
......
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