drivers/staging/comedi/drivers/ni_daq

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This source file includes following definitions.
daq700_dio_insn_bits
daq700_dio_insn_config
daq700_ai_eoc
daq700_ai_rinsn
daq700_ai_config
daq700_auto_attach
daq700_cs_attach
   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  *     comedi/drivers/ni_daq_700.c
   4  *     Driver for DAQCard-700 DIO/AI
   5  *     copied from 8255
   6  *
   7  *     COMEDI - Linux Control and Measurement Device Interface
   8  *     Copyright (C) 1998 David A. Schleef <ds@schleef.org>
   9  */
  10 
  11 /*
  12  * Driver: ni_daq_700
  13  * Description: National Instruments PCMCIA DAQCard-700
  14  * Author: Fred Brooks <nsaspook@nsaspook.com>,
  15  *   based on ni_daq_dio24 by Daniel Vecino Castel <dvecino@able.es>
  16  * Devices: [National Instruments] PCMCIA DAQ-Card-700 (ni_daq_700)
  17  * Status: works
  18  * Updated: Wed, 21 May 2014 12:07:20 +0000
  19  *
  20  * The daqcard-700 appears in Comedi as a  digital I/O subdevice (0) with
  21  * 16 channels and a analog input subdevice (1) with 16 single-ended channels
  22  * or 8 differential channels, and three input ranges.
  23  *
  24  * Digital:  The channel 0 corresponds to the daqcard-700's output
  25  * port, bit 0; channel 8 corresponds to the input port, bit 0.
  26  *
  27  * Digital direction configuration: channels 0-7 output, 8-15 input.
  28  *
  29  * Analog: The input  range is 0 to 4095 with a default of -10 to +10 volts.
  30  * Valid ranges:
  31  *       0 for -10 to 10V bipolar
  32  *       1 for -5 to 5V bipolar
  33  *       2 for -2.5 to 2.5V bipolar
  34  *
  35  * IRQ is assigned but not used.
  36  *
  37  * Manuals:     Register level: http://www.ni.com/pdf/manuals/340698.pdf
  38  *              User Manual:    http://www.ni.com/pdf/manuals/320676d.pdf
  39  */
  40 
  41 #include <linux/module.h>
  42 #include <linux/delay.h>
  43 #include <linux/interrupt.h>
  44 
  45 #include "../comedi_pcmcia.h"
  46 
  47 /* daqcard700 registers */
  48 #define DIO_W           0x04    /* WO 8bit */
  49 #define DIO_R           0x05    /* RO 8bit */
  50 #define CMD_R1          0x00    /* WO 8bit */
  51 #define CMD_R2          0x07    /* RW 8bit */
  52 #define CMD_R3          0x05    /* W0 8bit */
  53 #define STA_R1          0x00    /* RO 8bit */
  54 #define STA_R2          0x01    /* RO 8bit */
  55 #define ADFIFO_R        0x02    /* RO 16bit */
  56 #define ADCLEAR_R       0x01    /* WO 8bit */
  57 #define CDA_R0          0x08    /* RW 8bit */
  58 #define CDA_R1          0x09    /* RW 8bit */
  59 #define CDA_R2          0x0A    /* RW 8bit */
  60 #define CMO_R           0x0B    /* RO 8bit */
  61 #define TIC_R           0x06    /* WO 8bit */
  62 /* daqcard700 modes */
  63 #define CMD_R3_DIFF     0x04    /* diff mode */
  64 
  65 static const struct comedi_lrange range_daq700_ai = {
  66         3,
  67         {
  68                 BIP_RANGE(10),
  69                 BIP_RANGE(5),
  70                 BIP_RANGE(2.5)
  71         }
  72 };
  73 
  74 static int daq700_dio_insn_bits(struct comedi_device *dev,
  75                                 struct comedi_subdevice *s,
  76                                 struct comedi_insn *insn,
  77                                 unsigned int *data)
  78 {
  79         unsigned int mask;
  80         unsigned int val;
  81 
  82         mask = comedi_dio_update_state(s, data);
  83         if (mask) {
  84                 if (mask & 0xff)
  85                         outb(s->state & 0xff, dev->iobase + DIO_W);
  86         }
  87 
  88         val = s->state & 0xff;
  89         val |= inb(dev->iobase + DIO_R) << 8;
  90 
  91         data[1] = val;
  92 
  93         return insn->n;
  94 }
  95 
  96 static int daq700_dio_insn_config(struct comedi_device *dev,
  97                                   struct comedi_subdevice *s,
  98                                   struct comedi_insn *insn,
  99                                   unsigned int *data)
 100 {
 101         int ret;
 102 
 103         ret = comedi_dio_insn_config(dev, s, insn, data, 0);
 104         if (ret)
 105                 return ret;
 106 
 107         /* The DIO channels are not configurable, fix the io_bits */
 108         s->io_bits = 0x00ff;
 109 
 110         return insn->n;
 111 }
 112 
 113 static int daq700_ai_eoc(struct comedi_device *dev,
 114                          struct comedi_subdevice *s,
 115                          struct comedi_insn *insn,
 116                          unsigned long context)
 117 {
 118         unsigned int status;
 119 
 120         status = inb(dev->iobase + STA_R2);
 121         if ((status & 0x03))
 122                 return -EOVERFLOW;
 123         status = inb(dev->iobase + STA_R1);
 124         if ((status & 0x02))
 125                 return -ENODATA;
 126         if ((status & 0x11) == 0x01)
 127                 return 0;
 128         return -EBUSY;
 129 }
 130 
 131 static int daq700_ai_rinsn(struct comedi_device *dev,
 132                            struct comedi_subdevice *s,
 133                            struct comedi_insn *insn, unsigned int *data)
 134 {
 135         int n;
 136         int d;
 137         int ret;
 138         unsigned int chan       = CR_CHAN(insn->chanspec);
 139         unsigned int aref       = CR_AREF(insn->chanspec);
 140         unsigned int range      = CR_RANGE(insn->chanspec);
 141         unsigned int r3_bits    = 0;
 142 
 143         /* set channel input modes */
 144         if (aref == AREF_DIFF)
 145                 r3_bits |= CMD_R3_DIFF;
 146         /* write channel mode/range */
 147         if (range >= 1)
 148                 range++;        /* convert range to hardware value */
 149         outb(r3_bits | (range & 0x03), dev->iobase + CMD_R3);
 150 
 151         /* write channel to multiplexer */
 152         /* set mask scan bit high to disable scanning */
 153         outb(chan | 0x80, dev->iobase + CMD_R1);
 154         /* mux needs 2us to really settle [Fred Brooks]. */
 155         udelay(2);
 156 
 157         /* convert n samples */
 158         for (n = 0; n < insn->n; n++) {
 159                 /* trigger conversion with out0 L to H */
 160                 outb(0x00, dev->iobase + CMD_R2); /* enable ADC conversions */
 161                 outb(0x30, dev->iobase + CMO_R); /* mode 0 out0 L, from H */
 162                 outb(0x00, dev->iobase + ADCLEAR_R);    /* clear the ADC FIFO */
 163                 /* read 16bit junk from FIFO to clear */
 164                 inw(dev->iobase + ADFIFO_R);
 165                 /* mode 1 out0 H, L to H, start conversion */
 166                 outb(0x32, dev->iobase + CMO_R);
 167 
 168                 /* wait for conversion to end */
 169                 ret = comedi_timeout(dev, s, insn, daq700_ai_eoc, 0);
 170                 if (ret)
 171                         return ret;
 172 
 173                 /* read data */
 174                 d = inw(dev->iobase + ADFIFO_R);
 175                 /* mangle the data as necessary */
 176                 /* Bipolar Offset Binary: 0 to 4095 for -10 to +10 */
 177                 d &= 0x0fff;
 178                 d ^= 0x0800;
 179                 data[n] = d;
 180         }
 181         return n;
 182 }
 183 
 184 /*
 185  * Data acquisition is enabled.
 186  * The counter 0 output is high.
 187  * The I/O connector pin CLK1 drives counter 1 source.
 188  * Multiple-channel scanning is disabled.
 189  * All interrupts are disabled.
 190  * The analog input range is set to +-10 V
 191  * The analog input mode is single-ended.
 192  * The analog input circuitry is initialized to channel 0.
 193  * The A/D FIFO is cleared.
 194  */
 195 static void daq700_ai_config(struct comedi_device *dev,
 196                              struct comedi_subdevice *s)
 197 {
 198         unsigned long iobase = dev->iobase;
 199 
 200         outb(0x80, iobase + CMD_R1);    /* disable scanning, ADC to chan 0 */
 201         outb(0x00, iobase + CMD_R2);    /* clear all bits */
 202         outb(0x00, iobase + CMD_R3);    /* set +-10 range */
 203         outb(0x32, iobase + CMO_R);     /* config counter mode1, out0 to H */
 204         outb(0x00, iobase + TIC_R);     /* clear counter interrupt */
 205         outb(0x00, iobase + ADCLEAR_R); /* clear the ADC FIFO */
 206         inw(iobase + ADFIFO_R);         /* read 16bit junk from FIFO to clear */
 207 }
 208 
 209 static int daq700_auto_attach(struct comedi_device *dev,
 210                               unsigned long context)
 211 {
 212         struct pcmcia_device *link = comedi_to_pcmcia_dev(dev);
 213         struct comedi_subdevice *s;
 214         int ret;
 215 
 216         link->config_flags |= CONF_AUTO_SET_IO;
 217         ret = comedi_pcmcia_enable(dev, NULL);
 218         if (ret)
 219                 return ret;
 220         dev->iobase = link->resource[0]->start;
 221 
 222         ret = comedi_alloc_subdevices(dev, 2);
 223         if (ret)
 224                 return ret;
 225 
 226         /* DAQCard-700 dio */
 227         s = &dev->subdevices[0];
 228         s->type         = COMEDI_SUBD_DIO;
 229         s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
 230         s->n_chan       = 16;
 231         s->range_table  = &range_digital;
 232         s->maxdata      = 1;
 233         s->insn_bits    = daq700_dio_insn_bits;
 234         s->insn_config  = daq700_dio_insn_config;
 235         s->io_bits      = 0x00ff;
 236 
 237         /* DAQCard-700 ai */
 238         s = &dev->subdevices[1];
 239         s->type = COMEDI_SUBD_AI;
 240         s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF;
 241         s->n_chan = 16;
 242         s->maxdata = BIT(12) - 1;
 243         s->range_table = &range_daq700_ai;
 244         s->insn_read = daq700_ai_rinsn;
 245         daq700_ai_config(dev, s);
 246 
 247         return 0;
 248 }
 249 
 250 static struct comedi_driver daq700_driver = {
 251         .driver_name    = "ni_daq_700",
 252         .module         = THIS_MODULE,
 253         .auto_attach    = daq700_auto_attach,
 254         .detach         = comedi_pcmcia_disable,
 255 };
 256 
 257 static int daq700_cs_attach(struct pcmcia_device *link)
 258 {
 259         return comedi_pcmcia_auto_config(link, &daq700_driver);
 260 }
 261 
 262 static const struct pcmcia_device_id daq700_cs_ids[] = {
 263         PCMCIA_DEVICE_MANF_CARD(0x010b, 0x4743),
 264         PCMCIA_DEVICE_NULL
 265 };
 266 MODULE_DEVICE_TABLE(pcmcia, daq700_cs_ids);
 267 
 268 static struct pcmcia_driver daq700_cs_driver = {
 269         .name           = "ni_daq_700",
 270         .owner          = THIS_MODULE,
 271         .id_table       = daq700_cs_ids,
 272         .probe          = daq700_cs_attach,
 273         .remove         = comedi_pcmcia_auto_unconfig,
 274 };
 275 module_comedi_pcmcia_driver(daq700_driver, daq700_cs_driver);
 276 
 277 MODULE_AUTHOR("Fred Brooks <nsaspook@nsaspook.com>");
 278 MODULE_DESCRIPTION(
 279         "Comedi driver for National Instruments PCMCIA DAQCard-700 DIO/AI");
 280 MODULE_LICENSE("GPL");
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/staging/comedi/drivers/ni_daq_700.c

DEFINITIONS
