// SPDX-License-Identifier: GPL-2.0+
/*
* comedi/drivers/ni_daq_700.c
* Driver for DAQCard-700 DIO/AI
* copied from 8255
*
* COMEDI - Linux Control and Measurement Device Interface
* Copyright (C) 1998 David A. Schleef <[email protected]>
*/
/*
* Driver: ni_daq_700
* Description: National Instruments PCMCIA DAQCard-700
* Author: Fred Brooks <[email protected]>,
* based on ni_daq_dio24 by Daniel Vecino Castel <[email protected]>
* Devices: [National Instruments] PCMCIA DAQ-Card-700 (ni_daq_700)
* Status: works
* Updated: Wed, 21 May 2014 12:07:20 +0000
*
* The daqcard-700 appears in Comedi as a digital I/O subdevice (0) with
* 16 channels and a analog input subdevice (1) with 16 single-ended channels
* or 8 differential channels, and three input ranges.
*
* Digital: The channel 0 corresponds to the daqcard-700's output
* port, bit 0; channel 8 corresponds to the input port, bit 0.
*
* Digital direction configuration: channels 0-7 output, 8-15 input.
*
* Analog: The input range is 0 to 4095 with a default of -10 to +10 volts.
* Valid ranges:
* 0 for -10 to 10V bipolar
* 1 for -5 to 5V bipolar
* 2 for -2.5 to 2.5V bipolar
*
* IRQ is assigned but not used.
*
* Manuals: Register level: https://www.ni.com/pdf/manuals/340698.pdf
* User Manual: https://www.ni.com/pdf/manuals/320676d.pdf
*/
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/comedi/comedi_pcmcia.h>
/* daqcard700 registers */
#define DIO_W 0x04 /* WO 8bit */
#define DIO_R 0x05 /* RO 8bit */
#define CMD_R1 0x00 /* WO 8bit */
#define CMD_R2 0x07 /* RW 8bit */
#define CMD_R3 0x05 /* W0 8bit */
#define STA_R1 0x00 /* RO 8bit */
#define STA_R2 0x01 /* RO 8bit */
#define ADFIFO_R 0x02 /* RO 16bit */
#define ADCLEAR_R 0x01 /* WO 8bit */
#define CDA_R0 0x08 /* RW 8bit */
#define CDA_R1 0x09 /* RW 8bit */
#define CDA_R2 0x0A /* RW 8bit */
#define CMO_R 0x0B /* RO 8bit */
#define TIC_R 0x06 /* WO 8bit */
/* daqcard700 modes */
#define CMD_R3_DIFF 0x04 /* diff mode */
static const struct comedi_lrange range_daq700_ai = {
3,
{
BIP_RANGE(10),
BIP_RANGE(5),
BIP_RANGE(2.5)
}
};
static int daq700_dio_insn_bits(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
unsigned int mask;
unsigned int val;
mask = comedi_dio_update_state(s, data);
if (mask) {
if (mask & 0xff)
outb(s->state & 0xff, dev->iobase + DIO_W);
}
val = s->state & 0xff;
val |= inb(dev->iobase + DIO_R) << 8;
data[1] = val;
return insn->n;
}
static int daq700_dio_insn_config(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
int ret;
ret = comedi_dio_insn_config(dev, s, insn, data, 0);
if (ret)
return ret;
/* The DIO channels are not configurable, fix the io_bits */
s->io_bits = 0x00ff;
return insn->n;
}
static int daq700_ai_eoc(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned long context)
{
unsigned int status;
status = inb(dev->iobase + STA_R2);
if ((status & 0x03))
return -EOVERFLOW;
status = inb(dev->iobase + STA_R1);
if ((status & 0x02))
return -ENODATA;
if ((status & 0x11) == 0x01)
return 0;
return -EBUSY;
}
static int daq700_ai_rinsn(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
int n;
int d;
int ret;
unsigned int chan = CR_CHAN(insn->chanspec);
unsigned int aref = CR_AREF(insn->chanspec);
unsigned int range = CR_RANGE(insn->chanspec);
unsigned int r3_bits = 0;
/* set channel input modes */
if (aref == AREF_DIFF)
r3_bits |= CMD_R3_DIFF;
/* write channel mode/range */
if (range >= 1)
range++; /* convert range to hardware value */
outb(r3_bits | (range & 0x03), dev->iobase + CMD_R3);
/* write channel to multiplexer */
/* set mask scan bit high to disable scanning */
outb(chan | 0x80, dev->iobase + CMD_R1);
/* mux needs 2us to really settle [Fred Brooks]. */
udelay(2);
/* convert n samples */
for (n = 0; n < insn->n; n++) {
/* trigger conversion with out0 L to H */
outb(0x00, dev->iobase + CMD_R2); /* enable ADC conversions */
outb(0x30, dev->iobase + CMO_R); /* mode 0 out0 L, from H */
outb(0x00, dev->iobase + ADCLEAR_R); /* clear the ADC FIFO */
/* read 16bit junk from FIFO to clear */
inw(dev->iobase + ADFIFO_R);
/* mode 1 out0 H, L to H, start conversion */
outb(0x32, dev->iobase + CMO_R);
/* wait for conversion to end */
ret = comedi_timeout(dev, s, insn, daq700_ai_eoc, 0);
if (ret)
return ret;
/* read data */
d = inw(dev->iobase + ADFIFO_R);
/* mangle the data as necessary */
/* Bipolar Offset Binary: 0 to 4095 for -10 to +10 */
d &= 0x0fff;
d ^= 0x0800;
data[n] = d;
}
return n;
}
/*
* Data acquisition is enabled.
* The counter 0 output is high.
* The I/O connector pin CLK1 drives counter 1 source.
* Multiple-channel scanning is disabled.
* All interrupts are disabled.
* The analog input range is set to +-10 V
* The analog input mode is single-ended.
* The analog input circuitry is initialized to channel 0.
* The A/D FIFO is cleared.
*/
static void daq700_ai_config(struct comedi_device *dev,
struct comedi_subdevice *s)
{
unsigned long iobase = dev->iobase;
outb(0x80, iobase + CMD_R1); /* disable scanning, ADC to chan 0 */
outb(0x00, iobase + CMD_R2); /* clear all bits */
outb(0x00, iobase + CMD_R3); /* set +-10 range */
outb(0x32, iobase + CMO_R); /* config counter mode1, out0 to H */
outb(0x00, iobase + TIC_R); /* clear counter interrupt */
outb(0x00, iobase + ADCLEAR_R); /* clear the ADC FIFO */
inw(iobase + ADFIFO_R); /* read 16bit junk from FIFO to clear */
}
static int daq700_auto_attach(struct comedi_device *dev,
unsigned long context)
{
struct pcmcia_device *link = comedi_to_pcmcia_dev(dev);
struct comedi_subdevice *s;
int ret;
link->config_flags |= CONF_AUTO_SET_IO;
ret = comedi_pcmcia_enable(dev, NULL);
if (ret)
return ret;
dev->iobase = link->resource[0]->start;
ret = comedi_alloc_subdevices(dev, 2);
if (ret)
return ret;
/* DAQCard-700 dio */
s = &dev->subdevices[0];
s->type = COMEDI_SUBD_DIO;
s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
s->n_chan = 16;
s->range_table = &range_digital;
s->maxdata = 1;
s->insn_bits = daq700_dio_insn_bits;
s->insn_config = daq700_dio_insn_config;
s->io_bits = 0x00ff;
/* DAQCard-700 ai */
s = &dev->subdevices[1];
s->type = COMEDI_SUBD_AI;
s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF;
s->n_chan = 16;
s->maxdata = BIT(12) - 1;
s->range_table = &range_daq700_ai;
s->insn_read = daq700_ai_rinsn;
daq700_ai_config(dev, s);
return 0;
}
static struct comedi_driver daq700_driver = {
.driver_name = "ni_daq_700",
.module = THIS_MODULE,
.auto_attach = daq700_auto_attach,
.detach = comedi_pcmcia_disable,
};
static int daq700_cs_attach(struct pcmcia_device *link)
{
return comedi_pcmcia_auto_config(link, &daq700_driver);
}
static const struct pcmcia_device_id daq700_cs_ids[] = {
PCMCIA_DEVICE_MANF_CARD(0x010b, 0x4743),
PCMCIA_DEVICE_NULL
};
MODULE_DEVICE_TABLE(pcmcia, daq700_cs_ids);
static struct pcmcia_driver daq700_cs_driver = {
.name = "ni_daq_700",
.owner = THIS_MODULE,
.id_table = daq700_cs_ids,
.probe = daq700_cs_attach,
.remove = comedi_pcmcia_auto_unconfig,
};
module_comedi_pcmcia_driver(daq700_driver, daq700_cs_driver);
MODULE_AUTHOR("Fred Brooks <[email protected]>");
MODULE_DESCRIPTION(
"Comedi driver for National Instruments PCMCIA DAQCard-700 DIO/AI");
MODULE_LICENSE("GPL");
Codebase Browser
linux