drivers/staging/comedi/drivers/adl_pci7x3x.c

   1 /*
   2  * COMEDI driver for the ADLINK PCI-723x/743x series boards.
   3  * Copyright (C) 2012 H Hartley Sweeten <hsweeten@visionengravers.com>
   4  *
   5  * Based on the adl_pci7230 driver written by:
   6  *      David Fernandez <dfcastelao@gmail.com>
   7  * and the adl_pci7432 driver written by:
   8  *      Michel Lachaine <mike@mikelachaine.ca>
   9  *
  10  * COMEDI - Linux Control and Measurement Device Interface
  11  * Copyright (C) 2000 David A. Schleef <ds@schleef.org>
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 2 of the License, or
  16  * (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  */
  23
  24 /*
  25  * Driver: adl_pci7x3x
  26  * Description: 32/64-Channel Isolated Digital I/O Boards
  27  * Devices: [ADLink] PCI-7230 (adl_pci7230), PCI-7233 (adl_pci7233),
  28  *   PCI-7234 (adl_pci7234), PCI-7432 (adl_pci7432), PCI-7433 (adl_pci7433),
  29  *   PCI-7434 (adl_pci7434)
  30  * Author: H Hartley Sweeten <hsweeten@visionengravers.com>
  31  * Updated: Thu, 02 Aug 2012 14:27:46 -0700
  32  * Status: untested
  33  *
  34  * One or two subdevices are setup by this driver depending on
  35  * the number of digital inputs and/or outputs provided by the
  36  * board. Each subdevice has a maximum of 32 channels.
  37  *
  38  *      PCI-7230 - 2 subdevices: 0 - 16 input, 1 - 16 output
  39  *      PCI-7233 - 1 subdevice: 0 - 32 input
  40  *      PCI-7234 - 1 subdevice: 0 - 32 output
  41  *      PCI-7432 - 2 subdevices: 0 - 32 input, 1 - 32 output
  42  *      PCI-7433 - 2 subdevices: 0 - 32 input, 1 - 32 input
  43  *      PCI-7434 - 2 subdevices: 0 - 32 output, 1 - 32 output
  44  *
  45  * The PCI-7230, PCI-7432 and PCI-7433 boards also support external
  46  * interrupt signals on digital input channels 0 and 1. The PCI-7233
  47  * has dual-interrupt sources for change-of-state (COS) on any 16
  48  * digital input channels of LSB and for COS on any 16 digital input
  49  * lines of MSB. Interrupts are not currently supported by this
  50  * driver.
  51  *
  52  * Configuration Options: not applicable, uses comedi PCI auto config
  53  */
  54
  55 #include <linux/module.h>
  56
  57 #include "../comedi_pci.h"
  58
  59 /*
  60  * Register I/O map (32-bit access only)
  61  */
  62 #define PCI7X3X_DIO_REG         0x00
  63 #define PCI743X_DIO_REG         0x04
  64
  65 enum apci1516_boardid {
  66         BOARD_PCI7230,
  67         BOARD_PCI7233,
  68         BOARD_PCI7234,
  69         BOARD_PCI7432,
  70         BOARD_PCI7433,
  71         BOARD_PCI7434,
  72 };
  73
  74 struct adl_pci7x3x_boardinfo {
  75         const char *name;
  76         int nsubdevs;
  77         int di_nchan;
  78         int do_nchan;
  79 };
  80
  81 static const struct adl_pci7x3x_boardinfo adl_pci7x3x_boards[] = {
  82         [BOARD_PCI7230] = {
  83                 .name           = "adl_pci7230",
  84                 .nsubdevs       = 2,
  85                 .di_nchan       = 16,
  86                 .do_nchan       = 16,
  87         },
  88         [BOARD_PCI7233] = {
  89                 .name           = "adl_pci7233",
  90                 .nsubdevs       = 1,
  91                 .di_nchan       = 32,
  92         },
  93         [BOARD_PCI7234] = {
  94                 .name           = "adl_pci7234",
  95                 .nsubdevs       = 1,
  96                 .do_nchan       = 32,
  97         },
  98         [BOARD_PCI7432] = {
  99                 .name           = "adl_pci7432",
 100                 .nsubdevs       = 2,
 101                 .di_nchan       = 32,
 102                 .do_nchan       = 32,
 103         },
 104         [BOARD_PCI7433] = {
 105                 .name           = "adl_pci7433",
 106                 .nsubdevs       = 2,
 107                 .di_nchan       = 64,
 108         },
 109         [BOARD_PCI7434] = {
 110                 .name           = "adl_pci7434",
 111                 .nsubdevs       = 2,
 112                 .do_nchan       = 64,
 113         }
 114 };
 115
 116 static int adl_pci7x3x_do_insn_bits(struct comedi_device *dev,
 117                                     struct comedi_subdevice *s,
 118                                     struct comedi_insn *insn,
 119                                     unsigned int *data)
 120 {
 121         unsigned long reg = (unsigned long)s->private;
 122
 123         if (comedi_dio_update_state(s, data))
 124                 outl(s->state, dev->iobase + reg);
 125
 126         data[1] = s->state;
 127
 128         return insn->n;
 129 }
 130
 131 static int adl_pci7x3x_di_insn_bits(struct comedi_device *dev,
 132                                     struct comedi_subdevice *s,
 133                                     struct comedi_insn *insn,
 134                                     unsigned int *data)
 135 {
 136         unsigned long reg = (unsigned long)s->private;
 137
 138         data[1] = inl(dev->iobase + reg);
 139
 140         return insn->n;
 141 }
 142
 143 static int adl_pci7x3x_auto_attach(struct comedi_device *dev,
 144                                    unsigned long context)
 145 {
 146         struct pci_dev *pcidev = comedi_to_pci_dev(dev);
 147         const struct adl_pci7x3x_boardinfo *board = NULL;
 148         struct comedi_subdevice *s;
 149         int subdev;
 150         int nchan;
 151         int ret;
 152
 153         if (context < ARRAY_SIZE(adl_pci7x3x_boards))
 154                 board = &adl_pci7x3x_boards[context];
 155         if (!board)
 156                 return -ENODEV;
 157         dev->board_ptr = board;
 158         dev->board_name = board->name;
 159
 160         ret = comedi_pci_enable(dev);
 161         if (ret)
 162                 return ret;
 163         dev->iobase = pci_resource_start(pcidev, 2);
 164
 165         ret = comedi_alloc_subdevices(dev, board->nsubdevs);
 166         if (ret)
 167                 return ret;
 168
 169         subdev = 0;
 170
 171         if (board->di_nchan) {
 172                 nchan = min(board->di_nchan, 32);
 173
 174                 s = &dev->subdevices[subdev];
 175                 /* Isolated digital inputs 0 to 15/31 */
 176                 s->type         = COMEDI_SUBD_DI;
 177                 s->subdev_flags = SDF_READABLE;
 178                 s->n_chan       = nchan;
 179                 s->maxdata      = 1;
 180                 s->insn_bits    = adl_pci7x3x_di_insn_bits;
 181                 s->range_table  = &range_digital;
 182
 183                 s->private      = (void *)PCI7X3X_DIO_REG;
 184
 185                 subdev++;
 186
 187                 nchan = board->di_nchan - nchan;
 188                 if (nchan) {
 189                         s = &dev->subdevices[subdev];
 190                         /* Isolated digital inputs 32 to 63 */
 191                         s->type         = COMEDI_SUBD_DI;
 192                         s->subdev_flags = SDF_READABLE;
 193                         s->n_chan       = nchan;
 194                         s->maxdata      = 1;
 195                         s->insn_bits    = adl_pci7x3x_di_insn_bits;
 196                         s->range_table  = &range_digital;
 197
 198                         s->private      = (void *)PCI743X_DIO_REG;
 199
 200                         subdev++;
 201                 }
 202         }
 203
 204         if (board->do_nchan) {
 205                 nchan = min(board->do_nchan, 32);
 206
 207                 s = &dev->subdevices[subdev];
 208                 /* Isolated digital outputs 0 to 15/31 */
 209                 s->type         = COMEDI_SUBD_DO;
 210                 s->subdev_flags = SDF_WRITABLE;
 211                 s->n_chan       = nchan;
 212                 s->maxdata      = 1;
 213                 s->insn_bits    = adl_pci7x3x_do_insn_bits;
 214                 s->range_table  = &range_digital;
 215
 216                 s->private      = (void *)PCI7X3X_DIO_REG;
 217
 218                 subdev++;
 219
 220                 nchan = board->do_nchan - nchan;
 221                 if (nchan) {
 222                         s = &dev->subdevices[subdev];
 223                         /* Isolated digital outputs 32 to 63 */
 224                         s->type         = COMEDI_SUBD_DO;
 225                         s->subdev_flags = SDF_WRITABLE;
 226                         s->n_chan       = nchan;
 227                         s->maxdata      = 1;
 228                         s->insn_bits    = adl_pci7x3x_do_insn_bits;
 229                         s->range_table  = &range_digital;
 230
 231                         s->private      = (void *)PCI743X_DIO_REG;
 232
 233                         subdev++;
 234                 }
 235         }
 236
 237         return 0;
 238 }
 239
 240 static struct comedi_driver adl_pci7x3x_driver = {
 241         .driver_name    = "adl_pci7x3x",
 242         .module         = THIS_MODULE,
 243         .auto_attach    = adl_pci7x3x_auto_attach,
 244         .detach         = comedi_pci_detach,
 245 };
 246
 247 static int adl_pci7x3x_pci_probe(struct pci_dev *dev,
 248                                  const struct pci_device_id *id)
 249 {
 250         return comedi_pci_auto_config(dev, &adl_pci7x3x_driver,
 251                                       id->driver_data);
 252 }
 253
 254 static const struct pci_device_id adl_pci7x3x_pci_table[] = {
 255         { PCI_VDEVICE(ADLINK, 0x7230), BOARD_PCI7230 },
 256         { PCI_VDEVICE(ADLINK, 0x7233), BOARD_PCI7233 },
 257         { PCI_VDEVICE(ADLINK, 0x7234), BOARD_PCI7234 },
 258         { PCI_VDEVICE(ADLINK, 0x7432), BOARD_PCI7432 },
 259         { PCI_VDEVICE(ADLINK, 0x7433), BOARD_PCI7433 },
 260         { PCI_VDEVICE(ADLINK, 0x7434), BOARD_PCI7434 },
 261         { 0 }
 262 };
 263 MODULE_DEVICE_TABLE(pci, adl_pci7x3x_pci_table);
 264
 265 static struct pci_driver adl_pci7x3x_pci_driver = {
 266         .name           = "adl_pci7x3x",
 267         .id_table       = adl_pci7x3x_pci_table,
 268         .probe          = adl_pci7x3x_pci_probe,
 269         .remove         = comedi_pci_auto_unconfig,
 270 };
 271 module_comedi_pci_driver(adl_pci7x3x_driver, adl_pci7x3x_pci_driver);
 272
 273 MODULE_DESCRIPTION("ADLINK PCI-723x/743x Isolated Digital I/O boards");
 274 MODULE_AUTHOR("H Hartley Sweeten <hsweeten@visionengravers.com>");
 275 MODULE_LICENSE("GPL");