Google Git
Sign in
nest-open-source / nest-guard / 1.0 / linux / 6754b876e4c89285b30ff59800d23e21ce2dbe3f / . / linux / drivers / staging / comedi / drivers / das08.c
blob: 3141dc80fe743d4ec5e916581d4a74f471447b34 [file] [log] [blame]
/*
* comedi/drivers/das08.c
* DAS08 driver
*
* COMEDI - Linux Control and Measurement Device Interface
* Copyright (C) 2000 David A. Schleef <ds@schleef.org>
* Copyright (C) 2001,2002,2003 Frank Mori Hess <fmhess@users.sourceforge.net>
* Copyright (C) 2004 Salvador E. Tropea <set@users.sf.net> <set@ieee.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*****************************************************************
*/
/*
* Driver: das08
* Description: DAS-08 compatible boards
* Author: Warren Jasper, ds, Frank Hess
* Devices: [Keithley Metrabyte] DAS08 (isa-das08),
* [ComputerBoards] DAS08 (isa-das08), DAS08-PGM (das08-pgm),
* DAS08-PGH (das08-pgh), DAS08-PGL (das08-pgl), DAS08-AOH (das08-aoh),
* DAS08-AOL (das08-aol), DAS08-AOM (das08-aom), DAS08/JR-AO (das08/jr-ao),
* DAS08/JR-16-AO (das08jr-16-ao), PCI-DAS08 (das08),
* PC104-DAS08 (pc104-das08), DAS08/JR/16 (das08jr/16)
* Status: works
*
* This is a rewrite of the das08 and das08jr drivers.
*
* Options (for ISA cards):
* [0] - base io address
*
* Options (for pci-das08):
* [0] - bus (optional)
* [1] = slot (optional)
*
* The das08 driver doesn't support asynchronous commands, since
* the cheap das08 hardware doesn't really support them. The
* comedi_rt_timer driver can be used to emulate commands for this
* driver.
*/
#include "../comedidev.h"
#include <linux/delay.h>
#include "comedi_pci.h"
#include "8255.h"
#include "das08.h"
#define DRV_NAME "das08"
#define PCI_VENDOR_ID_COMPUTERBOARDS 0x1307
#define PCI_DEVICE_ID_PCIDAS08 0x29
#define PCIDAS08_SIZE 0x54
/* pci configuration registers */
#define INTCSR 0x4c
#define INTR1_ENABLE 0x1
#define INTR1_HIGH_POLARITY 0x2
#define PCI_INTR_ENABLE 0x40
#define INTR1_EDGE_TRIG 0x100 /* requires high polarity */
#define CNTRL 0x50
#define CNTRL_DIR 0x2
#define CNTRL_INTR 0x4
/*
cio-das08.pdf
"isa-das08"
0 a/d bits 0-3 start 8 bit
1 a/d bits 4-11 start 12 bit
2 eoc, ip1-3, irq, mux op1-4, inte, mux
3 unused unused
4567 8254
89ab 8255
requires hard-wiring for async ai
*/
#define DAS08_LSB 0
#define DAS08_MSB 1
#define DAS08_TRIG_12BIT 1
#define DAS08_STATUS 2
#define DAS08_EOC (1<<7)
#define DAS08_IRQ (1<<3)
#define DAS08_IP(x) (((x)>>4)&0x7)
#define DAS08_CONTROL 2
#define DAS08_MUX_MASK 0x7
#define DAS08_MUX(x) ((x) & DAS08_MUX_MASK)
#define DAS08_INTE (1<<3)
#define DAS08_DO_MASK 0xf0
#define DAS08_OP(x) (((x) << 4) & DAS08_DO_MASK)
/*
cio-das08jr.pdf
"das08/jr-ao"
0 a/d bits 0-3 unused
1 a/d bits 4-11 start 12 bit
2 eoc, mux mux
3 di do
4 unused ao0_lsb
5 unused ao0_msb
6 unused ao1_lsb
7 unused ao1_msb
*/
#define DAS08JR_DIO 3
#define DAS08JR_AO_LSB(x) ((x) ? 6 : 4)
#define DAS08JR_AO_MSB(x) ((x) ? 7 : 5)
/*
cio-das08_aox.pdf
"das08-aoh"
"das08-aol"
"das08-aom"
0 a/d bits 0-3 start 8 bit
1 a/d bits 4-11 start 12 bit
2 eoc, ip1-3, irq, mux op1-4, inte, mux
3 mux, gain status gain control
4567 8254
8 unused ao0_lsb
9 unused ao0_msb
a unused ao1_lsb
b unused ao1_msb
89ab
cdef 8255
*/
#define DAS08AO_GAIN_CONTROL 3
#define DAS08AO_GAIN_STATUS 3
#define DAS08AO_AO_LSB(x) ((x) ? 0xa : 8)
#define DAS08AO_AO_MSB(x) ((x) ? 0xb : 9)
#define DAS08AO_AO_UPDATE 8
/* gainlist same as _pgx_ below */
static int das08_ai_rinsn(struct comedi_device *dev, struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data);
static int das08_di_rbits(struct comedi_device *dev, struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data);
static int das08_do_wbits(struct comedi_device *dev, struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data);
static int das08jr_di_rbits(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data);
static int das08jr_do_wbits(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data);
static int das08jr_ao_winsn(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data);
static int das08ao_ao_winsn(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data);
static void i8254_set_mode_low(unsigned int base, int channel,
unsigned int mode);
static const struct comedi_lrange range_das08_pgl = { 9, {
BIP_RANGE(10),
BIP_RANGE(5),
BIP_RANGE(2.5),
BIP_RANGE(1.25),
BIP_RANGE(0.625),
UNI_RANGE(10),
UNI_RANGE(5),
UNI_RANGE(2.5),
UNI_RANGE(1.25)
}
};
static const struct comedi_lrange range_das08_pgh = { 12, {
BIP_RANGE(10),
BIP_RANGE(5),
BIP_RANGE(1),
BIP_RANGE(0.5),
BIP_RANGE(0.1),
BIP_RANGE(0.05),
BIP_RANGE(0.01),
BIP_RANGE(0.005),
UNI_RANGE(10),
UNI_RANGE(1),
UNI_RANGE(0.1),
UNI_RANGE(0.01),
}
};
static const struct comedi_lrange range_das08_pgm = { 9, {
BIP_RANGE(10),
BIP_RANGE(5),
BIP_RANGE(0.5),
BIP_RANGE(0.05),
BIP_RANGE(0.01),
UNI_RANGE(10),
UNI_RANGE(1),
UNI_RANGE(0.1),
UNI_RANGE(0.01)
}
}; /*
cio-das08jr.pdf
"das08/jr-ao"
0 a/d bits 0-3 unused
1 a/d bits 4-11 start 12 bit
2 eoc, mux mux
3 di do
4 unused ao0_lsb
5 unused ao0_msb
6 unused ao1_lsb
7 unused ao1_msb
*/
static const struct comedi_lrange *const das08_ai_lranges[] = {
&range_unknown,
&range_bipolar5,
&range_das08_pgh,
&range_das08_pgl,
&range_das08_pgm,
};
static const int das08_pgh_gainlist[] = {
8, 0, 10, 2, 12, 4, 14, 6, 1, 3, 5, 7
};
static const int das08_pgl_gainlist[] = { 8, 0, 2, 4, 6, 1, 3, 5, 7 };
static const int das08_pgm_gainlist[] = { 8, 0, 10, 12, 14, 9, 11, 13, 15 };
static const int *const das08_gainlists[] = {
NULL,
NULL,
das08_pgh_gainlist,
das08_pgl_gainlist,
das08_pgm_gainlist,
};
static const struct das08_board_struct das08_boards[] = {
{
.name = "isa-das08", /* cio-das08.pdf */
.bustype = isa,
.ai = das08_ai_rinsn,
.ai_nbits = 12,
.ai_pg = das08_pg_none,
.ai_encoding = das08_encode12,
.ao = NULL,
.ao_nbits = 12,
.di = das08_di_rbits,
.do_ = das08_do_wbits,
.do_nchan = 4,
.i8255_offset = 8,
.i8254_offset = 4,
.iosize = 16, /* unchecked */
},
{
.name = "das08-pgm", /* cio-das08pgx.pdf */
.bustype = isa,
.ai = das08_ai_rinsn,
.ai_nbits = 12,
.ai_pg = das08_pgm,
.ai_encoding = das08_encode12,
.ao = NULL,
.di = das08_di_rbits,
.do_ = das08_do_wbits,
.do_nchan = 4,
.i8255_offset = 0,
.i8254_offset = 0x04,
.iosize = 16, /* unchecked */
},
{
.name = "das08-pgh", /* cio-das08pgx.pdf */
.bustype = isa,
.ai = das08_ai_rinsn,
.ai_nbits = 12,
.ai_pg = das08_pgh,
.ai_encoding = das08_encode12,
.ao = NULL,
.di = das08_di_rbits,
.do_ = das08_do_wbits,
.do_nchan = 4,
.i8255_offset = 0,
.i8254_offset = 0x04,
.iosize = 16, /* unchecked */
},
{
.name = "das08-pgl", /* cio-das08pgx.pdf */
.bustype = isa,
.ai = das08_ai_rinsn,
.ai_nbits = 12,
.ai_pg = das08_pgl,
.ai_encoding = das08_encode12,
.ao = NULL,
.di = das08_di_rbits,
.do_ = das08_do_wbits,
.do_nchan = 4,
.i8255_offset = 0,
.i8254_offset = 0x04,
.iosize = 16, /* unchecked */
},
{
.name = "das08-aoh", /* cio-das08_aox.pdf */
.bustype = isa,
.ai = das08_ai_rinsn,
.ai_nbits = 12,
.ai_pg = das08_pgh,
.ai_encoding = das08_encode12,
.ao = das08ao_ao_winsn, /* 8 */
.ao_nbits = 12,
.di = das08_di_rbits,
.do_ = das08_do_wbits,
.do_nchan = 4,
.i8255_offset = 0x0c,
.i8254_offset = 0x04,
.iosize = 16, /* unchecked */
},
{
.name = "das08-aol", /* cio-das08_aox.pdf */
.bustype = isa,
.ai = das08_ai_rinsn,
.ai_nbits = 12,
.ai_pg = das08_pgl,
.ai_encoding = das08_encode12,
.ao = das08ao_ao_winsn, /* 8 */
.ao_nbits = 12,
.di = das08_di_rbits,
.do_ = das08_do_wbits,
.do_nchan = 4,
.i8255_offset = 0x0c,
.i8254_offset = 0x04,
.iosize = 16, /* unchecked */
},
{
.name = "das08-aom", /* cio-das08_aox.pdf */
.bustype = isa,
.ai = das08_ai_rinsn,
.ai_nbits = 12,
.ai_pg = das08_pgm,
.ai_encoding = das08_encode12,
.ao = das08ao_ao_winsn, /* 8 */
.ao_nbits = 12,
.di = das08_di_rbits,
.do_ = das08_do_wbits,
.do_nchan = 4,
.i8255_offset = 0x0c,
.i8254_offset = 0x04,
.iosize = 16, /* unchecked */
},
{
.name = "das08/jr-ao", /* cio-das08-jr-ao.pdf */
.bustype = isa,
.ai = das08_ai_rinsn,
.ai_nbits = 12,
.ai_pg = das08_pg_none,
.ai_encoding = das08_encode12,
.ao = das08jr_ao_winsn,
.ao_nbits = 12,
.di = das08jr_di_rbits,
.do_ = das08jr_do_wbits,
.do_nchan = 8,
.i8255_offset = 0,
.i8254_offset = 0,
.iosize = 16, /* unchecked */
},
{
.name = "das08jr-16-ao", /* cio-das08jr-16-ao.pdf */
.bustype = isa,
.ai = das08_ai_rinsn,
.ai_nbits = 16,
.ai_pg = das08_pg_none,
.ai_encoding = das08_encode12,
.ao = das08jr_ao_winsn,
.ao_nbits = 16,
.di = das08jr_di_rbits,
.do_ = das08jr_do_wbits,
.do_nchan = 8,
.i8255_offset = 0,
.i8254_offset = 0x04,
.iosize = 16, /* unchecked */
},
#ifdef CONFIG_COMEDI_PCI
{
.name = "das08", /* pci-das08 */
.id = PCI_DEVICE_ID_PCIDAS08,
.bustype = pci,
.ai = das08_ai_rinsn,
.ai_nbits = 12,
.ai_pg = das08_bipolar5,
.ai_encoding = das08_encode12,
.ao = NULL,
.ao_nbits = 0,
.di = das08_di_rbits,
.do_ = das08_do_wbits,
.do_nchan = 4,
.i8255_offset = 0,
.i8254_offset = 4,
.iosize = 8,
},
#endif
{
.name = "pc104-das08",
.bustype = pc104,
.ai = das08_ai_rinsn,
.ai_nbits = 12,
.ai_pg = das08_pg_none,
.ai_encoding = das08_encode12,
.ao = NULL,
.ao_nbits = 0,
.di = das08_di_rbits,
.do_ = das08_do_wbits,
.do_nchan = 4,
.i8255_offset = 0,
.i8254_offset = 4,
.iosize = 16, /* unchecked */
},
#if 0
{
.name = "das08/f",
},
{
.name = "das08jr",
},
#endif
{
.name = "das08jr/16",
.bustype = isa,
.ai = das08_ai_rinsn,
.ai_nbits = 16,
.ai_pg = das08_pg_none,
.ai_encoding = das08_encode16,
.ao = NULL,
.ao_nbits = 0,
.di = das08jr_di_rbits,
.do_ = das08jr_do_wbits,
.do_nchan = 8,
.i8255_offset = 0,
.i8254_offset = 0,
.iosize = 16, /* unchecked */
},
#if 0
{
.name = "das48-pga", /* cio-das48-pga.pdf */
},
{
.name = "das08-pga-g2", /* a KM board */
},
#endif
};
#ifdef CONFIG_COMEDI_PCMCIA
struct das08_board_struct das08_cs_boards[NUM_DAS08_CS_BOARDS] = {
{
.name = "pcm-das08",
.id = 0x0, /* XXX */
.bustype = pcmcia,
.ai = das08_ai_rinsn,
.ai_nbits = 12,
.ai_pg = das08_bipolar5,
.ai_encoding = das08_pcm_encode12,
.ao = NULL,
.ao_nbits = 0,
.di = das08_di_rbits,
.do_ = das08_do_wbits,
.do_nchan = 3,
.i8255_offset = 0,
.i8254_offset = 0,
.iosize = 16,
},
/* duplicate so driver name can be used also */
{
.name = "das08_cs",
.id = 0x0, /* XXX */
.bustype = pcmcia,
.ai = das08_ai_rinsn,
.ai_nbits = 12,
.ai_pg = das08_bipolar5,
.ai_encoding = das08_pcm_encode12,
.ao = NULL,
.ao_nbits = 0,
.di = das08_di_rbits,
.do_ = das08_do_wbits,
.do_nchan = 3,
.i8255_offset = 0,
.i8254_offset = 0,
.iosize = 16,
},
};
#endif
#ifdef CONFIG_COMEDI_PCI
static DEFINE_PCI_DEVICE_TABLE(das08_pci_table) = {
{
PCI_VENDOR_ID_COMPUTERBOARDS, PCI_DEVICE_ID_PCIDAS08,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, {
0}
};
MODULE_DEVICE_TABLE(pci, das08_pci_table);
#endif
#define devpriv ((struct das08_private_struct *)dev->private)
#define thisboard ((const struct das08_board_struct *)dev->board_ptr)
#define TIMEOUT 100000
static int das08_ai_rinsn(struct comedi_device *dev, struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
int i, n;
int chan;
int range;
int lsb, msb;
chan = CR_CHAN(insn->chanspec);
range = CR_RANGE(insn->chanspec);
/* clear crap */
inb(dev->iobase + DAS08_LSB);
inb(dev->iobase + DAS08_MSB);
/* set multiplexer */
/* lock to prevent race with digital output */
spin_lock(&dev->spinlock);
devpriv->do_mux_bits &= ~DAS08_MUX_MASK;
devpriv->do_mux_bits |= DAS08_MUX(chan);
outb(devpriv->do_mux_bits, dev->iobase + DAS08_CONTROL);
spin_unlock(&dev->spinlock);
if (s->range_table->length > 1) {
/* set gain/range */
range = CR_RANGE(insn->chanspec);
outb(devpriv->pg_gainlist[range],
dev->iobase + DAS08AO_GAIN_CONTROL);
}
for (n = 0; n < insn->n; n++) {
/* clear over-range bits for 16-bit boards */
if (thisboard->ai_nbits == 16)
if (inb(dev->iobase + DAS08_MSB) & 0x80)
printk(KERN_INFO "das08: over-range\n");
/* trigger conversion */
outb_p(0, dev->iobase + DAS08_TRIG_12BIT);
for (i = 0; i < TIMEOUT; i++) {
if (!(inb(dev->iobase + DAS08_STATUS) & DAS08_EOC))
break;
}
if (i == TIMEOUT) {
printk(KERN_ERR "das08: timeout\n");
return -ETIME;
}
msb = inb(dev->iobase + DAS08_MSB);
lsb = inb(dev->iobase + DAS08_LSB);
if (thisboard->ai_encoding == das08_encode12) {
data[n] = (lsb >> 4) | (msb << 4);
} else if (thisboard->ai_encoding == das08_pcm_encode12) {
data[n] = (msb << 8) + lsb;
} else if (thisboard->ai_encoding == das08_encode16) {
/* FPOS 16-bit boards are sign-magnitude */
if (msb & 0x80)
data[n] = (1 << 15) | lsb | ((msb & 0x7f) << 8);
else
data[n] = (1 << 15) - (lsb | (msb & 0x7f) << 8);
} else {
comedi_error(dev, "bug! unknown ai encoding");
return -1;
}
}
return n;
}
static int das08_di_rbits(struct comedi_device *dev, struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
data[0] = 0;
data[1] = DAS08_IP(inb(dev->iobase + DAS08_STATUS));
return 2;
}
static int das08_do_wbits(struct comedi_device *dev, struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
int wbits;
/* get current settings of digital output lines */
wbits = (devpriv->do_mux_bits >> 4) & 0xf;
/* null bits we are going to set */
wbits &= ~data[0];
/* set new bit values */
wbits |= data[0] & data[1];
/* remember digital output bits */
/* prevent race with setting of analog input mux */
spin_lock(&dev->spinlock);
devpriv->do_mux_bits &= ~DAS08_DO_MASK;
devpriv->do_mux_bits |= DAS08_OP(wbits);
outb(devpriv->do_mux_bits, dev->iobase + DAS08_CONTROL);
spin_unlock(&dev->spinlock);
data[1] = wbits;
return 2;
}
static int das08jr_di_rbits(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
data[0] = 0;
data[1] = inb(dev->iobase + DAS08JR_DIO);
return 2;
}
static int das08jr_do_wbits(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
/* null bits we are going to set */
devpriv->do_bits &= ~data[0];
/* set new bit values */
devpriv->do_bits |= data[0] & data[1];
outb(devpriv->do_bits, dev->iobase + DAS08JR_DIO);
data[1] = devpriv->do_bits;
return 2;
}
static int das08jr_ao_winsn(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
int n;
int lsb, msb;
int chan;
lsb = data[0] & 0xff;
msb = (data[0] >> 8) & 0xf;
chan = CR_CHAN(insn->chanspec);
for (n = 0; n < insn->n; n++) {
#if 0
outb(lsb, dev->iobase + devpriv->ao_offset_lsb[chan]);
outb(msb, dev->iobase + devpriv->ao_offset_msb[chan]);
#else
outb(lsb, dev->iobase + DAS08JR_AO_LSB(chan));
outb(msb, dev->iobase + DAS08JR_AO_MSB(chan));
#endif
/* load DACs */
inb(dev->iobase + DAS08JR_DIO);
}
return n;
}
/*
*
* The -aox boards have the DACs at a different offset and use
* a different method to force an update.
*
*/
static int das08ao_ao_winsn(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
int n;
int lsb, msb;
int chan;
lsb = data[0] & 0xff;
msb = (data[0] >> 8) & 0xf;
chan = CR_CHAN(insn->chanspec);
for (n = 0; n < insn->n; n++) {
#if 0
outb(lsb, dev->iobase + devpriv->ao_offset_lsb[chan]);
outb(msb, dev->iobase + devpriv->ao_offset_msb[chan]);
#else
outb(lsb, dev->iobase + DAS08AO_AO_LSB(chan));
outb(msb, dev->iobase + DAS08AO_AO_MSB(chan));
#endif
/* load DACs */
inb(dev->iobase + DAS08AO_AO_UPDATE);
}
return n;
}
static unsigned int i8254_read_channel_low(unsigned int base, int chan)
{
unsigned int msb, lsb;
/* The following instructions must be in order.
We must avoid other process reading the counter's value in the
middle.
The spin_lock isn't needed since ioctl calls grab the big kernel
lock automatically */
/*spin_lock(sp); */
outb(chan << 6, base + I8254_CTRL);
base += chan;
lsb = inb(base);
msb = inb(base);
/*spin_unlock(sp); */
return lsb | (msb << 8);
}
static void i8254_write_channel_low(unsigned int base, int chan,
unsigned int value)
{
unsigned int msb, lsb;
lsb = value & 0xFF;
msb = value >> 8;
/* write lsb, then msb */
base += chan;
/* See comments in i8254_read_channel_low */
/*spin_lock(sp); */
outb(lsb, base);
outb(msb, base);
/*spin_unlock(sp); */
}
static unsigned int i8254_read_channel(struct i8254_struct *st, int channel)
{
int chan = st->logic2phys[channel];
return i8254_read_channel_low(st->iobase, chan);
}
static void i8254_write_channel(struct i8254_struct *st, int channel,
unsigned int value)
{
int chan = st->logic2phys[channel];
i8254_write_channel_low(st->iobase, chan, value);
}
static void i8254_initialize(struct i8254_struct *st)
{
int i;
for (i = 0; i < 3; ++i)
i8254_set_mode_low(st->iobase, i, st->mode[i]);
}
static void i8254_set_mode_low(unsigned int base, int channel,
unsigned int mode)
{
outb((channel << 6) | 0x30 | (mode & 0x0F), base + I8254_CTRL);
}
static void i8254_set_mode(struct i8254_struct *st, int channel,
unsigned int mode)
{
int chan = st->logic2phys[channel];
st->mode[chan] = mode;
return i8254_set_mode_low(st->iobase, chan, mode);
}
static unsigned int i8254_read_status_low(unsigned int base, int channel)
{
outb(0xE0 | (2 << channel), base + I8254_CTRL);
return inb(base + channel);
}
static unsigned int i8254_read_status(struct i8254_struct *st, int channel)
{
int chan = st->logic2phys[channel];
return i8254_read_status_low(st->iobase, chan);
}
static int das08_counter_read(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
int chan = insn->chanspec;
/* printk("Reading counter channel %d ",chan); */
data[0] = i8254_read_channel(&devpriv->i8254, chan);
/* printk("=> 0x%08X\n",data[0]); */
return 1;
}
static int das08_counter_write(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
int chan = insn->chanspec;
/* printk("Writing counter channel %d with 0x%04X\n",chan,data[0]); */
i8254_write_channel(&devpriv->i8254, chan, data[0]);
return 1;
}
static int das08_counter_config(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
int chan = insn->chanspec;
if (insn->n != 2)
return -EINVAL;
switch (data[0]) {
case INSN_CONFIG_SET_COUNTER_MODE:
i8254_set_mode(&devpriv->i8254, chan, data[1]);
break;
case INSN_CONFIG_8254_READ_STATUS:
data[1] = i8254_read_status(&devpriv->i8254, chan);
break;
default:
return -EINVAL;
break;
}
return 2;
}
static int das08_attach(struct comedi_device *dev, struct comedi_devconfig *it);
static struct comedi_driver driver_das08 = {
.driver_name = DRV_NAME,
.module = THIS_MODULE,
.attach = das08_attach,
.detach = das08_common_detach,
.board_name = &das08_boards[0].name,
.num_names = sizeof(das08_boards) / sizeof(struct das08_board_struct),
.offset = sizeof(struct das08_board_struct),
};
int das08_common_attach(struct comedi_device *dev, unsigned long iobase)
{
struct comedi_subdevice *s;
int ret;
/* allocate ioports for non-pcmcia, non-pci boards */
if ((thisboard->bustype != pcmcia) && (thisboard->bustype != pci)) {
printk(KERN_INFO " iobase 0x%lx\n", iobase);
if (!request_region(iobase, thisboard->iosize, DRV_NAME)) {
printk(KERN_ERR " I/O port conflict\n");
return -EIO;
}
}
dev->iobase = iobase;
dev->board_name = thisboard->name;
ret = alloc_subdevices(dev, 6);
if (ret < 0)
return ret;
s = dev->subdevices + 0;
/* ai */
if (thisboard->ai) {
s->type = COMEDI_SUBD_AI;
/* XXX some boards actually have differential
* inputs instead of single ended.
* The driver does nothing with arefs though,
* so it's no big deal.
*/
s->subdev_flags = SDF_READABLE | SDF_GROUND;
s->n_chan = 8;
s->maxdata = (1 << thisboard->ai_nbits) - 1;
s->range_table = das08_ai_lranges[thisboard->ai_pg];
s->insn_read = thisboard->ai;
devpriv->pg_gainlist = das08_gainlists[thisboard->ai_pg];
} else {
s->type = COMEDI_SUBD_UNUSED;
}
s = dev->subdevices + 1;
/* ao */
if (thisboard->ao) {
s->type = COMEDI_SUBD_AO;
/* XXX lacks read-back insn */
s->subdev_flags = SDF_WRITABLE;
s->n_chan = 2;
s->maxdata = (1 << thisboard->ao_nbits) - 1;
s->range_table = &range_bipolar5;
s->insn_write = thisboard->ao;
} else {
s->type = COMEDI_SUBD_UNUSED;
}
s = dev->subdevices + 2;
/* di */
if (thisboard->di) {
s->type = COMEDI_SUBD_DI;
s->subdev_flags = SDF_READABLE;
s->n_chan = (thisboard->di == das08_di_rbits) ? 3 : 8;
s->maxdata = 1;
s->range_table = &range_digital;
s->insn_bits = thisboard->di;
} else {
s->type = COMEDI_SUBD_UNUSED;
}
s = dev->subdevices + 3;
/* do */
if (thisboard->do_) {
s->type = COMEDI_SUBD_DO;
s->subdev_flags = SDF_WRITABLE | SDF_READABLE;
s->n_chan = thisboard->do_nchan;
s->maxdata = 1;
s->range_table = &range_digital;
s->insn_bits = thisboard->do_;
} else {
s->type = COMEDI_SUBD_UNUSED;
}
s = dev->subdevices + 4;
/* 8255 */
if (thisboard->i8255_offset != 0) {
subdev_8255_init(dev, s, NULL, (unsigned long)(dev->iobase +
thisboard->
i8255_offset));
} else {
s->type = COMEDI_SUBD_UNUSED;
}
s = dev->subdevices + 5;
/* 8254 */
if (thisboard->i8254_offset != 0) {
s->type = COMEDI_SUBD_COUNTER;
s->subdev_flags = SDF_WRITABLE | SDF_READABLE;
s->n_chan = 3;
s->maxdata = 0xFFFF;
s->insn_read = das08_counter_read;
s->insn_write = das08_counter_write;
s->insn_config = das08_counter_config;
/* Set-up the 8254 structure */
devpriv->i8254.channels = 3;
devpriv->i8254.logic2phys[0] = 0;
devpriv->i8254.logic2phys[1] = 1;
devpriv->i8254.logic2phys[2] = 2;
devpriv->i8254.iobase = iobase + thisboard->i8254_offset;
devpriv->i8254.mode[0] =
devpriv->i8254.mode[1] =
devpriv->i8254.mode[2] = I8254_MODE0 | I8254_BINARY;
i8254_initialize(&devpriv->i8254);
} else {
s->type = COMEDI_SUBD_UNUSED;
}
return 0;
}
EXPORT_SYMBOL_GPL(das08_common_attach);
static int das08_attach(struct comedi_device *dev, struct comedi_devconfig *it)
{
int ret;
unsigned long iobase;
#ifdef CONFIG_COMEDI_PCI
unsigned long pci_iobase = 0;
struct pci_dev *pdev = NULL;
#endif
ret = alloc_private(dev, sizeof(struct das08_private_struct));
if (ret < 0)
return ret;
printk(KERN_INFO "comedi%d: das08: ", dev->minor);
/* deal with a pci board */
if (thisboard->bustype == pci) {
#ifdef CONFIG_COMEDI_PCI
if (it->options[0] || it->options[1]) {
printk("bus %i slot %i ",
it->options[0], it->options[1]);
}
printk("\n");
/* find card */
for_each_pci_dev(pdev) {
if (pdev->vendor == PCI_VENDOR_ID_COMPUTERBOARDS
&& pdev->device == PCI_DEVICE_ID_PCIDAS08) {
if (it->options[0] || it->options[1]) {
if (pdev->bus->number == it->options[0]
&& PCI_SLOT(pdev->devfn) ==
it->options[1]) {
break;
}
} else {
break;
}
}
}
if (!pdev) {
printk(KERN_ERR "No pci das08 cards found\n");
return -EIO;
}
devpriv->pdev = pdev;
/* enable PCI device and reserve I/O spaces */
if (comedi_pci_enable(pdev, DRV_NAME)) {
printk(KERN_ERR " Error enabling PCI device and "
"requesting regions\n");
return -EIO;
}
/* read base addresses */
pci_iobase = pci_resource_start(pdev, 1);
iobase = pci_resource_start(pdev, 2);
printk(KERN_INFO "pcibase 0x%lx iobase 0x%lx\n",
pci_iobase, iobase);
devpriv->pci_iobase = pci_iobase;
#if 0
/* We could enable to pci-das08's interrupt here to make it possible
* to do timed input in this driver, but there is little point since
* conversions would have to be started by the interrupt handler
* so you might as well use comedi_rt_timer to emulate commands
*/
/* set source of interrupt trigger to counter2 output */
outb(CNTRL_INTR | CNTRL_DIR, pci_iobase + CNTRL);
/* Enable local interrupt 1 and pci interrupt */
outw(INTR1_ENABLE | PCI_INTR_ENABLE, pci_iobase + INTCSR);
#endif
#else /* CONFIG_COMEDI_PCI */
printk(KERN_ERR "this driver has not been built with PCI support.\n");
return -EINVAL;
#endif /* CONFIG_COMEDI_PCI */
} else {
iobase = it->options[0];
}
printk(KERN_INFO "\n");
return das08_common_attach(dev, iobase);
}
int das08_common_detach(struct comedi_device *dev)
{
printk(KERN_INFO "comedi%d: das08: remove\n", dev->minor);
if (dev->subdevices)
subdev_8255_cleanup(dev, dev->subdevices + 4);
/* deallocate ioports for non-pcmcia, non-pci boards */
if ((thisboard->bustype != pcmcia) && (thisboard->bustype != pci)) {
if (dev->iobase)
release_region(dev->iobase, thisboard->iosize);
}
#ifdef CONFIG_COMEDI_PCI
if (devpriv) {
if (devpriv->pdev) {
if (devpriv->pci_iobase)
comedi_pci_disable(devpriv->pdev);
pci_dev_put(devpriv->pdev);
}
}
#endif
return 0;
}
EXPORT_SYMBOL_GPL(das08_common_detach);
#ifdef CONFIG_COMEDI_PCI
static int __devinit driver_das08_pci_probe(struct pci_dev *dev,
const struct pci_device_id *ent)
{
return comedi_pci_auto_config(dev, driver_das08.driver_name);
}
static void __devexit driver_das08_pci_remove(struct pci_dev *dev)
{
comedi_pci_auto_unconfig(dev);
}
static struct pci_driver driver_das08_pci_driver = {
.id_table = das08_pci_table,
.probe = &driver_das08_pci_probe,
.remove = __devexit_p(&driver_das08_pci_remove)
};
static int __init driver_das08_init_module(void)
{
int retval;
retval = comedi_driver_register(&driver_das08);
if (retval < 0)
return retval;
driver_das08_pci_driver.name = (char *)driver_das08.driver_name;
return pci_register_driver(&driver_das08_pci_driver);
}
static void __exit driver_das08_cleanup_module(void)
{
pci_unregister_driver(&driver_das08_pci_driver);
comedi_driver_unregister(&driver_das08);
}
module_init(driver_das08_init_module);
module_exit(driver_das08_cleanup_module);
#else
static int __init driver_das08_init_module(void)
{
return comedi_driver_register(&driver_das08);
}
static void __exit driver_das08_cleanup_module(void)
{
comedi_driver_unregister(&driver_das08);
}
module_init(driver_das08_init_module);
module_exit(driver_das08_cleanup_module);
#endif
#ifdef CONFIG_COMEDI_PCMCIA
EXPORT_SYMBOL_GPL(das08_cs_boards);
#endif
MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_DESCRIPTION("Comedi low-level driver");
MODULE_LICENSE("GPL");