--- /dev/null
+/*
+ * 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 <ds@schleef.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.
+ */
+
+/*
+ * Driver: ni_daq_700
+ * Description: National Instruments PCMCIA DAQCard-700
+ * Author: Fred Brooks <nsaspook@nsaspook.com>,
+ * based on ni_daq_dio24 by Daniel Vecino Castel <dvecino@able.es>
+ * 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: http://www.ni.com/pdf/manuals/340698.pdf
+ * User Manual: http://www.ni.com/pdf/manuals/320676d.pdf
+ */
+
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+
+#include "../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 = (1 << 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 <nsaspook@nsaspook.com>");
+MODULE_DESCRIPTION(
+ "Comedi driver for National Instruments PCMCIA DAQCard-700 DIO/AI");
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff