drivers/staging/comedi/drivers/adv

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This source file includes following definitions.
pci1723_ao_insn_write
pci1723_dio_insn_config
pci1723_dio_insn_bits
pci1723_auto_attach
adv_pci1723_pci_probe
   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * adv_pci1723.c
   4  * Comedi driver for the Advantech PCI-1723 card.
   5  *
   6  * COMEDI - Linux Control and Measurement Device Interface
   7  * Copyright (C) 2000 David A. Schleef <ds@schleef.org>
   8  */
   9 
  10 /*
  11  * Driver: adv_pci1723
  12  * Description: Advantech PCI-1723
  13  * Author: yonggang <rsmgnu@gmail.com>, Ian Abbott <abbotti@mev.co.uk>
  14  * Devices: [Advantech] PCI-1723 (adv_pci1723)
  15  * Updated: Mon, 14 Apr 2008 15:12:56 +0100
  16  * Status: works
  17  *
  18  * Configuration Options: not applicable, uses comedi PCI auto config
  19  *
  20  * Subdevice 0 is 8-channel AO, 16-bit, range +/- 10 V.
  21  *
  22  * Subdevice 1 is 16-channel DIO.  The channels are configurable as
  23  * input or output in 2 groups (0 to 7, 8 to 15). Configuring any
  24  * channel implicitly configures all channels in the same group.
  25  *
  26  * TODO:
  27  * 1. Add the two milliamp ranges to the AO subdevice (0 to 20 mA,
  28  *    4 to 20 mA).
  29  * 2. Read the initial ranges and values of the AO subdevice at
  30  *    start-up instead of reinitializing them.
  31  * 3. Implement calibration.
  32  */
  33 
  34 #include <linux/module.h>
  35 
  36 #include "../comedi_pci.h"
  37 
  38 /*
  39  * PCI Bar 2 I/O Register map (dev->iobase)
  40  */
  41 #define PCI1723_AO_REG(x)               (0x00 + ((x) * 2))
  42 #define PCI1723_BOARD_ID_REG            0x10
  43 #define PCI1723_BOARD_ID_MASK           (0xf << 0)
  44 #define PCI1723_SYNC_CTRL_REG           0x12
  45 #define PCI1723_SYNC_CTRL(x)            (((x) & 0x1) << 0)
  46 #define PCI1723_SYNC_CTRL_ASYNC         PCI1723_SYNC_CTRL(0)
  47 #define PCI1723_SYNC_CTRL_SYNC          PCI1723_SYNC_CTRL(1)
  48 #define PCI1723_CTRL_REG                0x14
  49 #define PCI1723_CTRL_BUSY               BIT(15)
  50 #define PCI1723_CTRL_INIT               BIT(14)
  51 #define PCI1723_CTRL_SELF               BIT(8)
  52 #define PCI1723_CTRL_IDX(x)             (((x) & 0x3) << 6)
  53 #define PCI1723_CTRL_RANGE(x)           (((x) & 0x3) << 4)
  54 #define PCI1723_CTRL_SEL(x)             (((x) & 0x1) << 3)
  55 #define PCI1723_CTRL_GAIN               PCI1723_CTRL_SEL(0)
  56 #define PCI1723_CTRL_OFFSET             PCI1723_CTRL_SEL(1)
  57 #define PCI1723_CTRL_CHAN(x)            (((x) & 0x7) << 0)
  58 #define PCI1723_CALIB_CTRL_REG          0x16
  59 #define PCI1723_CALIB_CTRL_CS           BIT(2)
  60 #define PCI1723_CALIB_CTRL_DAT          BIT(1)
  61 #define PCI1723_CALIB_CTRL_CLK          BIT(0)
  62 #define PCI1723_CALIB_STROBE_REG        0x18
  63 #define PCI1723_DIO_CTRL_REG            0x1a
  64 #define PCI1723_DIO_CTRL_HDIO           BIT(1)
  65 #define PCI1723_DIO_CTRL_LDIO           BIT(0)
  66 #define PCI1723_DIO_DATA_REG            0x1c
  67 #define PCI1723_CALIB_DATA_REG          0x1e
  68 #define PCI1723_SYNC_STROBE_REG         0x20
  69 #define PCI1723_RESET_AO_STROBE_REG     0x22
  70 #define PCI1723_RESET_CALIB_STROBE_REG  0x24
  71 #define PCI1723_RANGE_STROBE_REG        0x26
  72 #define PCI1723_VREF_REG                0x28
  73 #define PCI1723_VREF(x)                 (((x) & 0x3) << 0)
  74 #define PCI1723_VREF_NEG10V             PCI1723_VREF(0)
  75 #define PCI1723_VREF_0V                 PCI1723_VREF(1)
  76 #define PCI1723_VREF_POS10V             PCI1723_VREF(3)
  77 
  78 static int pci1723_ao_insn_write(struct comedi_device *dev,
  79                                  struct comedi_subdevice *s,
  80                                  struct comedi_insn *insn,
  81                                  unsigned int *data)
  82 {
  83         unsigned int chan = CR_CHAN(insn->chanspec);
  84         int i;
  85 
  86         for (i = 0; i < insn->n; i++) {
  87                 unsigned int val = data[i];
  88 
  89                 outw(val, dev->iobase + PCI1723_AO_REG(chan));
  90                 s->readback[chan] = val;
  91         }
  92 
  93         return insn->n;
  94 }
  95 
  96 static int pci1723_dio_insn_config(struct comedi_device *dev,
  97                                    struct comedi_subdevice *s,
  98                                    struct comedi_insn *insn,
  99                                    unsigned int *data)
 100 {
 101         unsigned int chan = CR_CHAN(insn->chanspec);
 102         unsigned int mask = (chan < 8) ? 0x00ff : 0xff00;
 103         unsigned short mode = 0x0000;           /* assume output */
 104         int ret;
 105 
 106         ret = comedi_dio_insn_config(dev, s, insn, data, mask);
 107         if (ret)
 108                 return ret;
 109 
 110         if (!(s->io_bits & 0x00ff))
 111                 mode |= PCI1723_DIO_CTRL_LDIO;  /* low byte input */
 112         if (!(s->io_bits & 0xff00))
 113                 mode |= PCI1723_DIO_CTRL_HDIO;  /* high byte input */
 114         outw(mode, dev->iobase + PCI1723_DIO_CTRL_REG);
 115 
 116         return insn->n;
 117 }
 118 
 119 static int pci1723_dio_insn_bits(struct comedi_device *dev,
 120                                  struct comedi_subdevice *s,
 121                                  struct comedi_insn *insn,
 122                                  unsigned int *data)
 123 {
 124         if (comedi_dio_update_state(s, data))
 125                 outw(s->state, dev->iobase + PCI1723_DIO_DATA_REG);
 126 
 127         data[1] = inw(dev->iobase + PCI1723_DIO_DATA_REG);
 128 
 129         return insn->n;
 130 }
 131 
 132 static int pci1723_auto_attach(struct comedi_device *dev,
 133                                unsigned long context_unused)
 134 {
 135         struct pci_dev *pcidev = comedi_to_pci_dev(dev);
 136         struct comedi_subdevice *s;
 137         unsigned int val;
 138         int ret;
 139         int i;
 140 
 141         ret = comedi_pci_enable(dev);
 142         if (ret)
 143                 return ret;
 144         dev->iobase = pci_resource_start(pcidev, 2);
 145 
 146         ret = comedi_alloc_subdevices(dev, 2);
 147         if (ret)
 148                 return ret;
 149 
 150         s = &dev->subdevices[0];
 151         s->type         = COMEDI_SUBD_AO;
 152         s->subdev_flags = SDF_WRITABLE | SDF_GROUND | SDF_COMMON;
 153         s->n_chan       = 8;
 154         s->maxdata      = 0xffff;
 155         s->range_table  = &range_bipolar10;
 156         s->insn_write   = pci1723_ao_insn_write;
 157 
 158         ret = comedi_alloc_subdev_readback(s);
 159         if (ret)
 160                 return ret;
 161 
 162         /* synchronously reset all analog outputs to 0V, +/-10V range */
 163         outw(PCI1723_SYNC_CTRL_SYNC, dev->iobase + PCI1723_SYNC_CTRL_REG);
 164         for (i = 0; i < s->n_chan; i++) {
 165                 outw(PCI1723_CTRL_RANGE(0) | PCI1723_CTRL_CHAN(i),
 166                      PCI1723_CTRL_REG);
 167                 outw(0, dev->iobase + PCI1723_RANGE_STROBE_REG);
 168 
 169                 outw(0x8000, dev->iobase + PCI1723_AO_REG(i));
 170                 s->readback[i] = 0x8000;
 171         }
 172         outw(0, dev->iobase + PCI1723_SYNC_STROBE_REG);
 173 
 174         /* disable syncronous control */
 175         outw(PCI1723_SYNC_CTRL_ASYNC, dev->iobase + PCI1723_SYNC_CTRL_REG);
 176 
 177         s = &dev->subdevices[1];
 178         s->type         = COMEDI_SUBD_DIO;
 179         s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
 180         s->n_chan       = 16;
 181         s->maxdata      = 1;
 182         s->range_table  = &range_digital;
 183         s->insn_config  = pci1723_dio_insn_config;
 184         s->insn_bits    = pci1723_dio_insn_bits;
 185 
 186         /* get initial DIO direction and state */
 187         val = inw(dev->iobase + PCI1723_DIO_CTRL_REG);
 188         if (!(val & PCI1723_DIO_CTRL_LDIO))
 189                 s->io_bits |= 0x00ff;   /* low byte output */
 190         if (!(val & PCI1723_DIO_CTRL_HDIO))
 191                 s->io_bits |= 0xff00;   /* high byte output */
 192         s->state = inw(dev->iobase + PCI1723_DIO_DATA_REG);
 193 
 194         return 0;
 195 }
 196 
 197 static struct comedi_driver adv_pci1723_driver = {
 198         .driver_name    = "adv_pci1723",
 199         .module         = THIS_MODULE,
 200         .auto_attach    = pci1723_auto_attach,
 201         .detach         = comedi_pci_detach,
 202 };
 203 
 204 static int adv_pci1723_pci_probe(struct pci_dev *dev,
 205                                  const struct pci_device_id *id)
 206 {
 207         return comedi_pci_auto_config(dev, &adv_pci1723_driver,
 208                                       id->driver_data);
 209 }
 210 
 211 static const struct pci_device_id adv_pci1723_pci_table[] = {
 212         { PCI_DEVICE(PCI_VENDOR_ID_ADVANTECH, 0x1723) },
 213         { 0 }
 214 };
 215 MODULE_DEVICE_TABLE(pci, adv_pci1723_pci_table);
 216 
 217 static struct pci_driver adv_pci1723_pci_driver = {
 218         .name           = "adv_pci1723",
 219         .id_table       = adv_pci1723_pci_table,
 220         .probe          = adv_pci1723_pci_probe,
 221         .remove         = comedi_pci_auto_unconfig,
 222 };
 223 module_comedi_pci_driver(adv_pci1723_driver, adv_pci1723_pci_driver);
 224 
 225 MODULE_AUTHOR("Comedi http://www.comedi.org");
 226 MODULE_DESCRIPTION("Advantech PCI-1723 Comedi driver");
 227 MODULE_LICENSE("GPL");
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/staging/comedi/drivers/adv_pci1723.c

DEFINITIONS
