Staging
v0.5.1
v0.5.1
https://github.com/torvalds/linux
Tip revision: c7208164e66f63e3ec1759b98087849286410741 authored by Linus Torvalds on 25 May 2014, 23:06:00 UTC
Linux 3.15-rc7
Linux 3.15-rc7
Tip revision: c720816
daqboard2000.c
/*
comedi/drivers/daqboard2000.c
hardware driver for IOtech DAQboard/2000
COMEDI - Linux Control and Measurement Device Interface
Copyright (C) 1999 Anders Blomdell <anders.blomdell@control.lth.se>
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.
*/
/*
Driver: daqboard2000
Description: IOTech DAQBoard/2000
Author: Anders Blomdell <anders.blomdell@control.lth.se>
Status: works
Updated: Mon, 14 Apr 2008 15:28:52 +0100
Devices: [IOTech] DAQBoard/2000 (daqboard2000)
Much of the functionality of this driver was determined from reading
the source code for the Windows driver.
The FPGA on the board requires fimware, which is available from
http://www.comedi.org in the comedi_nonfree_firmware tarball.
Configuration options: not applicable, uses PCI auto config
*/
/*
This card was obviously never intended to leave the Windows world,
since it lacked all kind of hardware documentation (except for cable
pinouts, plug and pray has something to catch up with yet).
With some help from our swedish distributor, we got the Windows sourcecode
for the card, and here are the findings so far.
1. A good document that describes the PCI interface chip is 9080db-106.pdf
available from http://www.plxtech.com/products/io/pci9080
2. The initialization done so far is:
a. program the FPGA (windows code sans a lot of error messages)
b.
3. Analog out seems to work OK with DAC's disabled, if DAC's are enabled,
you have to output values to all enabled DAC's until result appears, I
guess that it has something to do with pacer clocks, but the source
gives me no clues. I'll keep it simple so far.
4. Analog in.
Each channel in the scanlist seems to be controlled by four
control words:
Word0:
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! | | | ! | | | ! | | | ! | | | !
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Word1:
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! | | | ! | | | ! | | | ! | | | !
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | | | | | |
+------+------+ | | | | +-- Digital input (??)
| | | | +---- 10 us settling time
| | | +------ Suspend acquisition (last to scan)
| | +-------- Simultaneous sample and hold
| +---------- Signed data format
+------------------------- Correction offset low
Word2:
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! | | | ! | | | ! | | | ! | | | !
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | | | | | | | | |
+-----+ +--+--+ +++ +++ +--+--+
| | | | +----- Expansion channel
| | | +----------- Expansion gain
| | +--------------- Channel (low)
| +--------------------- Correction offset high
+----------------------------- Correction gain low
Word3:
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! | | | ! | | | ! | | | ! | | | !
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | | | | | | | |
+------+------+ | | +-+-+ | | +-- Low bank enable
| | | | | +---- High bank enable
| | | | +------ Hi/low select
| | | +---------- Gain (1,?,2,4,8,16,32,64)
| | +-------------- differential/single ended
| +---------------- Unipolar
+------------------------- Correction gain high
999. The card seems to have an incredible amount of capabilities, but
trying to reverse engineer them from the Windows source is beyond my
patience.
*/
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include "../comedidev.h"
#include "8255.h"
#define DAQBOARD2000_FIRMWARE "daqboard2000_firmware.bin"
#define DAQBOARD2000_SUBSYSTEM_IDS2 0x0002 /* Daqboard/2000 - 2 Dacs */
#define DAQBOARD2000_SUBSYSTEM_IDS4 0x0004 /* Daqboard/2000 - 4 Dacs */
/* Initialization bits for the Serial EEPROM Control Register */
#define DAQBOARD2000_SECRProgPinHi 0x8001767e
#define DAQBOARD2000_SECRProgPinLo 0x8000767e
#define DAQBOARD2000_SECRLocalBusHi 0xc000767e
#define DAQBOARD2000_SECRLocalBusLo 0x8000767e
#define DAQBOARD2000_SECRReloadHi 0xa000767e
#define DAQBOARD2000_SECRReloadLo 0x8000767e
/* SECR status bits */
#define DAQBOARD2000_EEPROM_PRESENT 0x10000000
/* CPLD status bits */
#define DAQBOARD2000_CPLD_INIT 0x0002
#define DAQBOARD2000_CPLD_DONE 0x0004
static const struct comedi_lrange range_daqboard2000_ai = {
13, {
BIP_RANGE(10),
BIP_RANGE(5),
BIP_RANGE(2.5),
BIP_RANGE(1.25),
BIP_RANGE(0.625),
BIP_RANGE(0.3125),
BIP_RANGE(0.156),
UNI_RANGE(10),
UNI_RANGE(5),
UNI_RANGE(2.5),
UNI_RANGE(1.25),
UNI_RANGE(0.625),
UNI_RANGE(0.3125)
}
};
/*
* Register Memory Map
*/
#define acqControl 0x00 /* u16 */
#define acqScanListFIFO 0x02 /* u16 */
#define acqPacerClockDivLow 0x04 /* u32 */
#define acqScanCounter 0x08 /* u16 */
#define acqPacerClockDivHigh 0x0a /* u16 */
#define acqTriggerCount 0x0c /* u16 */
#define acqResultsFIFO 0x10 /* u16 */
#define acqResultsShadow 0x14 /* u16 */
#define acqAdcResult 0x18 /* u16 */
#define dacScanCounter 0x1c /* u16 */
#define dacControl 0x20 /* u16 */
#define dacFIFO 0x24 /* s16 */
#define dacPacerClockDiv 0x2a /* u16 */
#define refDacs 0x2c /* u16 */
#define dioControl 0x30 /* u16 */
#define dioP3hsioData 0x32 /* s16 */
#define dioP3Control 0x34 /* u16 */
#define calEepromControl 0x36 /* u16 */
#define dacSetting(x) (0x38 + (x)*2) /* s16 */
#define dioP2ExpansionIO8Bit 0x40 /* s16 */
#define ctrTmrControl 0x80 /* u16 */
#define ctrInput(x) (0x88 + (x)*2) /* s16 */
#define timerDivisor(x) (0xa0 + (x)*2) /* u16 */
#define dmaControl 0xb0 /* u16 */
#define trigControl 0xb2 /* u16 */
#define calEeprom 0xb8 /* u16 */
#define acqDigitalMark 0xba /* u16 */
#define trigDacs 0xbc /* u16 */
#define dioP2ExpansionIO16Bit(x) (0xc0 + (x)*2) /* s16 */
/* Scan Sequencer programming */
#define DAQBOARD2000_SeqStartScanList 0x0011
#define DAQBOARD2000_SeqStopScanList 0x0010
/* Prepare for acquisition */
#define DAQBOARD2000_AcqResetScanListFifo 0x0004
#define DAQBOARD2000_AcqResetResultsFifo 0x0002
#define DAQBOARD2000_AcqResetConfigPipe 0x0001
/* Acqusition status bits */
#define DAQBOARD2000_AcqResultsFIFOMore1Sample 0x0001
#define DAQBOARD2000_AcqResultsFIFOHasValidData 0x0002
#define DAQBOARD2000_AcqResultsFIFOOverrun 0x0004
#define DAQBOARD2000_AcqLogicScanning 0x0008
#define DAQBOARD2000_AcqConfigPipeFull 0x0010
#define DAQBOARD2000_AcqScanListFIFOEmpty 0x0020
#define DAQBOARD2000_AcqAdcNotReady 0x0040
#define DAQBOARD2000_ArbitrationFailure 0x0080
#define DAQBOARD2000_AcqPacerOverrun 0x0100
#define DAQBOARD2000_DacPacerOverrun 0x0200
#define DAQBOARD2000_AcqHardwareError 0x01c0
/* Scan Sequencer programming */
#define DAQBOARD2000_SeqStartScanList 0x0011
#define DAQBOARD2000_SeqStopScanList 0x0010
/* Pacer Clock Control */
#define DAQBOARD2000_AdcPacerInternal 0x0030
#define DAQBOARD2000_AdcPacerExternal 0x0032
#define DAQBOARD2000_AdcPacerEnable 0x0031
#define DAQBOARD2000_AdcPacerEnableDacPacer 0x0034
#define DAQBOARD2000_AdcPacerDisable 0x0030
#define DAQBOARD2000_AdcPacerNormalMode 0x0060
#define DAQBOARD2000_AdcPacerCompatibilityMode 0x0061
#define DAQBOARD2000_AdcPacerInternalOutEnable 0x0008
#define DAQBOARD2000_AdcPacerExternalRising 0x0100
/* DAC status */
#define DAQBOARD2000_DacFull 0x0001
#define DAQBOARD2000_RefBusy 0x0002
#define DAQBOARD2000_TrgBusy 0x0004
#define DAQBOARD2000_CalBusy 0x0008
#define DAQBOARD2000_Dac0Busy 0x0010
#define DAQBOARD2000_Dac1Busy 0x0020
#define DAQBOARD2000_Dac2Busy 0x0040
#define DAQBOARD2000_Dac3Busy 0x0080
/* DAC control */
#define DAQBOARD2000_Dac0Enable 0x0021
#define DAQBOARD2000_Dac1Enable 0x0031
#define DAQBOARD2000_Dac2Enable 0x0041
#define DAQBOARD2000_Dac3Enable 0x0051
#define DAQBOARD2000_DacEnableBit 0x0001
#define DAQBOARD2000_Dac0Disable 0x0020
#define DAQBOARD2000_Dac1Disable 0x0030
#define DAQBOARD2000_Dac2Disable 0x0040
#define DAQBOARD2000_Dac3Disable 0x0050
#define DAQBOARD2000_DacResetFifo 0x0004
#define DAQBOARD2000_DacPatternDisable 0x0060
#define DAQBOARD2000_DacPatternEnable 0x0061
#define DAQBOARD2000_DacSelectSignedData 0x0002
#define DAQBOARD2000_DacSelectUnsignedData 0x0000
/* Trigger Control */
#define DAQBOARD2000_TrigAnalog 0x0000
#define DAQBOARD2000_TrigTTL 0x0010
#define DAQBOARD2000_TrigTransHiLo 0x0004
#define DAQBOARD2000_TrigTransLoHi 0x0000
#define DAQBOARD2000_TrigAbove 0x0000
#define DAQBOARD2000_TrigBelow 0x0004
#define DAQBOARD2000_TrigLevelSense 0x0002
#define DAQBOARD2000_TrigEdgeSense 0x0000
#define DAQBOARD2000_TrigEnable 0x0001
#define DAQBOARD2000_TrigDisable 0x0000
/* Reference Dac Selection */
#define DAQBOARD2000_PosRefDacSelect 0x0100
#define DAQBOARD2000_NegRefDacSelect 0x0000
struct daq200_boardtype {
const char *name;
int id;
};
static const struct daq200_boardtype boardtypes[] = {
{"ids2", DAQBOARD2000_SUBSYSTEM_IDS2},
{"ids4", DAQBOARD2000_SUBSYSTEM_IDS4},
};
struct daqboard2000_private {
enum {
card_daqboard_2000
} card;
void __iomem *daq;
void __iomem *plx;
unsigned int ao_readback[2];
};
static void writeAcqScanListEntry(struct comedi_device *dev, u16 entry)
{
struct daqboard2000_private *devpriv = dev->private;
/* udelay(4); */
writew(entry & 0x00ff, devpriv->daq + acqScanListFIFO);
/* udelay(4); */
writew((entry >> 8) & 0x00ff, devpriv->daq + acqScanListFIFO);
}
static void setup_sampling(struct comedi_device *dev, int chan, int gain)
{
u16 word0, word1, word2, word3;
/* Channel 0-7 diff, channel 8-23 single ended */
word0 = 0;
word1 = 0x0004; /* Last scan */
word2 = (chan << 6) & 0x00c0;
switch (chan / 4) {
case 0:
word3 = 0x0001;
break;
case 1:
word3 = 0x0002;
break;
case 2:
word3 = 0x0005;
break;
case 3:
word3 = 0x0006;
break;
case 4:
word3 = 0x0041;
break;
case 5:
word3 = 0x0042;
break;
default:
word3 = 0;
break;
}
/*
dev->eeprom.correctionDACSE[i][j][k].offset = 0x800;
dev->eeprom.correctionDACSE[i][j][k].gain = 0xc00;
*/
/* These should be read from EEPROM */
word2 |= 0x0800;
word3 |= 0xc000;
writeAcqScanListEntry(dev, word0);
writeAcqScanListEntry(dev, word1);
writeAcqScanListEntry(dev, word2);
writeAcqScanListEntry(dev, word3);
}
static int daqboard2000_ai_status(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned long context)
{
struct daqboard2000_private *devpriv = dev->private;
unsigned int status;
status = readw(devpriv->daq + acqControl);
if (status & context)
return 0;
return -EBUSY;
}
static int daqboard2000_ai_insn_read(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
struct daqboard2000_private *devpriv = dev->private;
int gain, chan;
int ret;
int i;
writew(DAQBOARD2000_AcqResetScanListFifo |
DAQBOARD2000_AcqResetResultsFifo |
DAQBOARD2000_AcqResetConfigPipe, devpriv->daq + acqControl);
/*
* If pacer clock is not set to some high value (> 10 us), we
* risk multiple samples to be put into the result FIFO.
*/
/* 1 second, should be long enough */
writel(1000000, devpriv->daq + acqPacerClockDivLow);
writew(0, devpriv->daq + acqPacerClockDivHigh);
gain = CR_RANGE(insn->chanspec);
chan = CR_CHAN(insn->chanspec);
/* This doesn't look efficient. I decided to take the conservative
* approach when I did the insn conversion. Perhaps it would be
* better to have broken it completely, then someone would have been
* forced to fix it. --ds */
for (i = 0; i < insn->n; i++) {
setup_sampling(dev, chan, gain);
/* Enable reading from the scanlist FIFO */
writew(DAQBOARD2000_SeqStartScanList,
devpriv->daq + acqControl);
ret = comedi_timeout(dev, s, insn, daqboard2000_ai_status,
DAQBOARD2000_AcqConfigPipeFull);
if (ret)
return ret;
writew(DAQBOARD2000_AdcPacerEnable, devpriv->daq + acqControl);
ret = comedi_timeout(dev, s, insn, daqboard2000_ai_status,
DAQBOARD2000_AcqLogicScanning);
if (ret)
return ret;
ret = comedi_timeout(dev, s, insn, daqboard2000_ai_status,
DAQBOARD2000_AcqResultsFIFOHasValidData);
if (ret)
return ret;
data[i] = readw(devpriv->daq + acqResultsFIFO);
writew(DAQBOARD2000_AdcPacerDisable, devpriv->daq + acqControl);
writew(DAQBOARD2000_SeqStopScanList, devpriv->daq + acqControl);
}
return i;
}
static int daqboard2000_ao_insn_read(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
struct daqboard2000_private *devpriv = dev->private;
int chan = CR_CHAN(insn->chanspec);
int i;
for (i = 0; i < insn->n; i++)
data[i] = devpriv->ao_readback[chan];
return i;
}
static int daqboard2000_ao_eoc(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned long context)
{
struct daqboard2000_private *devpriv = dev->private;
unsigned int chan = CR_CHAN(insn->chanspec);
unsigned int status;
status = readw(devpriv->daq + dacControl);
if ((status & ((chan + 1) * 0x0010)) == 0)
return 0;
return -EBUSY;
}
static int daqboard2000_ao_insn_write(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
struct daqboard2000_private *devpriv = dev->private;
int chan = CR_CHAN(insn->chanspec);
int ret;
int i;
for (i = 0; i < insn->n; i++) {
#if 0
/*
* OK, since it works OK without enabling the DAC's,
* let's keep it as simple as possible...
*/
writew((chan + 2) * 0x0010 | 0x0001,
devpriv->daq + dacControl);
udelay(1000);
#endif
writew(data[i], devpriv->daq + dacSetting(chan));
ret = comedi_timeout(dev, s, insn, daqboard2000_ao_eoc, 0);
if (ret)
return ret;
devpriv->ao_readback[chan] = data[i];
#if 0
/*
* Since we never enabled the DAC's, we don't need
* to disable it...
*/
writew((chan + 2) * 0x0010 | 0x0000,
devpriv->daq + dacControl);
udelay(1000);
#endif
}
return i;
}
static void daqboard2000_resetLocalBus(struct comedi_device *dev)
{
struct daqboard2000_private *devpriv = dev->private;
writel(DAQBOARD2000_SECRLocalBusHi, devpriv->plx + 0x6c);
mdelay(10);
writel(DAQBOARD2000_SECRLocalBusLo, devpriv->plx + 0x6c);
mdelay(10);
}
static void daqboard2000_reloadPLX(struct comedi_device *dev)
{
struct daqboard2000_private *devpriv = dev->private;
writel(DAQBOARD2000_SECRReloadLo, devpriv->plx + 0x6c);
mdelay(10);
writel(DAQBOARD2000_SECRReloadHi, devpriv->plx + 0x6c);
mdelay(10);
writel(DAQBOARD2000_SECRReloadLo, devpriv->plx + 0x6c);
mdelay(10);
}
static void daqboard2000_pulseProgPin(struct comedi_device *dev)
{
struct daqboard2000_private *devpriv = dev->private;
writel(DAQBOARD2000_SECRProgPinHi, devpriv->plx + 0x6c);
mdelay(10);
writel(DAQBOARD2000_SECRProgPinLo, devpriv->plx + 0x6c);
mdelay(10); /* Not in the original code, but I like symmetry... */
}
static int daqboard2000_pollCPLD(struct comedi_device *dev, int mask)
{
struct daqboard2000_private *devpriv = dev->private;
int result = 0;
int i;
int cpld;
/* timeout after 50 tries -> 5ms */
for (i = 0; i < 50; i++) {
cpld = readw(devpriv->daq + 0x1000);
if ((cpld & mask) == mask) {
result = 1;
break;
}
udelay(100);
}
udelay(5);
return result;
}
static int daqboard2000_writeCPLD(struct comedi_device *dev, int data)
{
struct daqboard2000_private *devpriv = dev->private;
int result = 0;
udelay(10);
writew(data, devpriv->daq + 0x1000);
if ((readw(devpriv->daq + 0x1000) & DAQBOARD2000_CPLD_INIT) ==
DAQBOARD2000_CPLD_INIT) {
result = 1;
}
return result;
}
static int initialize_daqboard2000(struct comedi_device *dev,
const u8 *cpld_array, size_t len,
unsigned long context)
{
struct daqboard2000_private *devpriv = dev->private;
int result = -EIO;
/* Read the serial EEPROM control register */
int secr;
int retry;
size_t i;
/* Check to make sure the serial eeprom is present on the board */
secr = readl(devpriv->plx + 0x6c);
if (!(secr & DAQBOARD2000_EEPROM_PRESENT))
return -EIO;
for (retry = 0; retry < 3; retry++) {
daqboard2000_resetLocalBus(dev);
daqboard2000_reloadPLX(dev);
daqboard2000_pulseProgPin(dev);
if (daqboard2000_pollCPLD(dev, DAQBOARD2000_CPLD_INIT)) {
for (i = 0; i < len; i++) {
if (cpld_array[i] == 0xff &&
cpld_array[i + 1] == 0x20)
break;
}
for (; i < len; i += 2) {
int data =
(cpld_array[i] << 8) + cpld_array[i + 1];
if (!daqboard2000_writeCPLD(dev, data))
break;
}
if (i >= len) {
daqboard2000_resetLocalBus(dev);
daqboard2000_reloadPLX(dev);
result = 0;
break;
}
}
}
return result;
}
static void daqboard2000_adcStopDmaTransfer(struct comedi_device *dev)
{
}
static void daqboard2000_adcDisarm(struct comedi_device *dev)
{
struct daqboard2000_private *devpriv = dev->private;
/* Disable hardware triggers */
udelay(2);
writew(DAQBOARD2000_TrigAnalog | DAQBOARD2000_TrigDisable,
devpriv->daq + trigControl);
udelay(2);
writew(DAQBOARD2000_TrigTTL | DAQBOARD2000_TrigDisable,
devpriv->daq + trigControl);
/* Stop the scan list FIFO from loading the configuration pipe */
udelay(2);
writew(DAQBOARD2000_SeqStopScanList, devpriv->daq + acqControl);
/* Stop the pacer clock */
udelay(2);
writew(DAQBOARD2000_AdcPacerDisable, devpriv->daq + acqControl);
/* Stop the input dma (abort channel 1) */
daqboard2000_adcStopDmaTransfer(dev);
}
static void daqboard2000_activateReferenceDacs(struct comedi_device *dev)
{
struct daqboard2000_private *devpriv = dev->private;
unsigned int val;
int timeout;
/* Set the + reference dac value in the FPGA */
writew(0x80 | DAQBOARD2000_PosRefDacSelect, devpriv->daq + refDacs);
for (timeout = 0; timeout < 20; timeout++) {
val = readw(devpriv->daq + dacControl);
if ((val & DAQBOARD2000_RefBusy) == 0)
break;
udelay(2);
}
/* Set the - reference dac value in the FPGA */
writew(0x80 | DAQBOARD2000_NegRefDacSelect, devpriv->daq + refDacs);
for (timeout = 0; timeout < 20; timeout++) {
val = readw(devpriv->daq + dacControl);
if ((val & DAQBOARD2000_RefBusy) == 0)
break;
udelay(2);
}
}
static void daqboard2000_initializeCtrs(struct comedi_device *dev)
{
}
static void daqboard2000_initializeTmrs(struct comedi_device *dev)
{
}
static void daqboard2000_dacDisarm(struct comedi_device *dev)
{
}
static void daqboard2000_initializeAdc(struct comedi_device *dev)
{
daqboard2000_adcDisarm(dev);
daqboard2000_activateReferenceDacs(dev);
daqboard2000_initializeCtrs(dev);
daqboard2000_initializeTmrs(dev);
}
static void daqboard2000_initializeDac(struct comedi_device *dev)
{
daqboard2000_dacDisarm(dev);
}
static int daqboard2000_8255_cb(int dir, int port, int data,
unsigned long ioaddr)
{
void __iomem *mmio_base = (void __iomem *)ioaddr;
if (dir) {
writew(data, mmio_base + port * 2);
return 0;
} else {
return readw(mmio_base + port * 2);
}
}
static const void *daqboard2000_find_boardinfo(struct comedi_device *dev,
struct pci_dev *pcidev)
{
const struct daq200_boardtype *board;
int i;
if (pcidev->subsystem_device != PCI_VENDOR_ID_IOTECH)
return NULL;
for (i = 0; i < ARRAY_SIZE(boardtypes); i++) {
board = &boardtypes[i];
if (pcidev->subsystem_device == board->id)
return board;
}
return NULL;
}
static int daqboard2000_auto_attach(struct comedi_device *dev,
unsigned long context_unused)
{
struct pci_dev *pcidev = comedi_to_pci_dev(dev);
const struct daq200_boardtype *board;
struct daqboard2000_private *devpriv;
struct comedi_subdevice *s;
int result;
board = daqboard2000_find_boardinfo(dev, pcidev);
if (!board)
return -ENODEV;
dev->board_ptr = board;
dev->board_name = board->name;
devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
if (!devpriv)
return -ENOMEM;
result = comedi_pci_enable(dev);
if (result)
return result;
devpriv->plx = pci_ioremap_bar(pcidev, 0);
devpriv->daq = pci_ioremap_bar(pcidev, 2);
if (!devpriv->plx || !devpriv->daq)
return -ENOMEM;
result = comedi_alloc_subdevices(dev, 3);
if (result)
return result;
readl(devpriv->plx + 0x6c);
result = comedi_load_firmware(dev, &comedi_to_pci_dev(dev)->dev,
DAQBOARD2000_FIRMWARE,
initialize_daqboard2000, 0);
if (result < 0)
return result;
daqboard2000_initializeAdc(dev);
daqboard2000_initializeDac(dev);
s = &dev->subdevices[0];
/* ai subdevice */
s->type = COMEDI_SUBD_AI;
s->subdev_flags = SDF_READABLE | SDF_GROUND;
s->n_chan = 24;
s->maxdata = 0xffff;
s->insn_read = daqboard2000_ai_insn_read;
s->range_table = &range_daqboard2000_ai;
s = &dev->subdevices[1];
/* ao subdevice */
s->type = COMEDI_SUBD_AO;
s->subdev_flags = SDF_WRITABLE;
s->n_chan = 2;
s->maxdata = 0xffff;
s->insn_read = daqboard2000_ao_insn_read;
s->insn_write = daqboard2000_ao_insn_write;
s->range_table = &range_bipolar10;
s = &dev->subdevices[2];
result = subdev_8255_init(dev, s, daqboard2000_8255_cb,
(unsigned long)(devpriv->daq + dioP2ExpansionIO8Bit));
if (result)
return result;
return 0;
}
static void daqboard2000_detach(struct comedi_device *dev)
{
struct daqboard2000_private *devpriv = dev->private;
if (dev->irq)
free_irq(dev->irq, dev);
if (devpriv) {
if (devpriv->daq)
iounmap(devpriv->daq);
if (devpriv->plx)
iounmap(devpriv->plx);
}
comedi_pci_disable(dev);
}
static struct comedi_driver daqboard2000_driver = {
.driver_name = "daqboard2000",
.module = THIS_MODULE,
.auto_attach = daqboard2000_auto_attach,
.detach = daqboard2000_detach,
};
static int daqboard2000_pci_probe(struct pci_dev *dev,
const struct pci_device_id *id)
{
return comedi_pci_auto_config(dev, &daqboard2000_driver,
id->driver_data);
}
static const struct pci_device_id daqboard2000_pci_table[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_IOTECH, 0x0409) },
{ 0 }
};
MODULE_DEVICE_TABLE(pci, daqboard2000_pci_table);
static struct pci_driver daqboard2000_pci_driver = {
.name = "daqboard2000",
.id_table = daqboard2000_pci_table,
.probe = daqboard2000_pci_probe,
.remove = comedi_pci_auto_unconfig,
};
module_comedi_pci_driver(daqboard2000_driver, daqboard2000_pci_driver);
MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_DESCRIPTION("Comedi low-level driver");
MODULE_LICENSE("GPL");
MODULE_FIRMWARE(DAQBOARD2000_FIRMWARE);
