drivers/staging/comedi/drivers/adv_pci1723.c

   1 /*******************************************************************************
   2    comedi/drivers/pci1723.c
   3
   4    COMEDI - Linux Control and Measurement Device Interface
   5    Copyright (C) 2000 David A. Schleef <ds@schleef.org>
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20
  21 *******************************************************************************/
  22 /*
  23 Driver: adv_pci1723
  24 Description: Advantech PCI-1723
  25 Author: yonggang <rsmgnu@gmail.com>, Ian Abbott <abbotti@mev.co.uk>
  26 Devices: [Advantech] PCI-1723 (adv_pci1723)
  27 Updated: Mon, 14 Apr 2008 15:12:56 +0100
  28 Status: works
  29
  30 Configuration Options:
  31   [0] - PCI bus of device (optional)
  32   [1] - PCI slot of device (optional)
  33
  34   If bus/slot is not specified, the first supported
  35   PCI device found will be used.
  36
  37 Subdevice 0 is 8-channel AO, 16-bit, range +/- 10 V.
  38
  39 Subdevice 1 is 16-channel DIO.  The channels are configurable as input or
  40 output in 2 groups (0 to 7, 8 to 15).  Configuring any channel implicitly
  41 configures all channels in the same group.
  42
  43 TODO:
  44
  45 1. Add the two milliamp ranges to the AO subdevice (0 to 20 mA, 4 to 20 mA).
  46 2. Read the initial ranges and values of the AO subdevice at start-up instead
  47    of reinitializing them.
  48 3. Implement calibration.
  49 */
  50
  51 #include "../comedidev.h"
  52
  53 #include "comedi_pci.h"
  54
  55 #define PCI_VENDOR_ID_ADVANTECH         0x13fe  /* Advantech PCI vendor ID */
  56
  57 /* hardware types of the cards */
  58 #define TYPE_PCI1723 0
  59
  60 #define IORANGE_1723  0x2A
  61
  62 /* all the registers for the pci1723 board */
  63 #define PCI1723_DA(N)   ((N)<<1)        /* W: D/A register N (0 to 7) */
  64
  65 #define PCI1723_SYN_SET  0x12           /* synchronized set register */
  66 #define PCI1723_ALL_CHNNELE_SYN_STROBE  0x12
  67                                         /* synchronized status register */
  68
  69 #define PCI1723_RANGE_CALIBRATION_MODE 0x14
  70                                         /* range and calibration mode */
  71 #define PCI1723_RANGE_CALIBRATION_STATUS 0x14
  72                                         /* range and calibration status */
  73
  74 #define PCI1723_CONTROL_CMD_CALIBRATION_FUN 0x16
  75                                                 /*
  76                                                  * SADC control command for
  77                                                  * calibration function
  78                                                  */
  79 #define PCI1723_STATUS_CMD_CALIBRATION_FUN 0x16
  80                                                 /*
  81                                                  * SADC control status for
  82                                                  * calibration function
  83                                                  */
  84
  85 #define PCI1723_CALIBRATION_PARA_STROBE 0x18
  86                                         /* Calibration parameter strobe */
  87
  88 #define PCI1723_DIGITAL_IO_PORT_SET 0x1A        /* Digital I/O port setting */
  89 #define PCI1723_DIGITAL_IO_PORT_MODE 0x1A       /* Digital I/O port mode */
  90
  91 #define PCI1723_WRITE_DIGITAL_OUTPUT_CMD 0x1C
  92                                         /* Write digital output command */
  93 #define PCI1723_READ_DIGITAL_INPUT_DATA 0x1C    /* Read digital input data */
  94
  95 #define PCI1723_WRITE_CAL_CMD 0x1E              /* Write calibration command */
  96 #define PCI1723_READ_CAL_STATUS 0x1E            /* Read calibration status */
  97
  98 #define PCI1723_SYN_STROBE 0x20                 /* Synchronized strobe */
  99
 100 #define PCI1723_RESET_ALL_CHN_STROBE 0x22
 101                                         /* Reset all D/A channels strobe */
 102
 103 #define PCI1723_RESET_CAL_CONTROL_STROBE 0x24
 104                                                 /*
 105                                                  * Reset the calibration
 106                                                  * controller strobe
 107                                                  */
 108
 109 #define PCI1723_CHANGE_CHA_OUTPUT_TYPE_STROBE 0x26
 110                                                 /*
 111                                                  * Change D/A channels output
 112                                                  * type strobe
 113                                                  */
 114
 115 #define PCI1723_SELECT_CALIBRATION 0x28 /* Select the calibration Ref_V */
 116
 117 /* static unsigned short pci_list_builded=0;      =1 list of card is know */
 118
 119 static const struct comedi_lrange range_pci1723 = { 1, {
 120                                                         BIP_RANGE(10)
 121                                                         }
 122 };
 123
 124 /*
 125  * Board descriptions for pci1723 boards.
 126  */
 127 struct pci1723_board {
 128         const char *name;
 129         int vendor_id;          /* PCI vendor a device ID of card */
 130         int device_id;
 131         int iorange;
 132         char cardtype;
 133         int n_aochan;           /* num of D/A chans */
 134         int n_diochan;          /* num of DIO chans */
 135         int ao_maxdata;         /* resolution of D/A */
 136         const struct comedi_lrange *rangelist_ao;       /* rangelist for D/A */
 137 };
 138
 139 static const struct pci1723_board boardtypes[] = {
 140         {
 141          .name = "pci1723",
 142          .vendor_id = PCI_VENDOR_ID_ADVANTECH,
 143          .device_id = 0x1723,
 144          .iorange = IORANGE_1723,
 145          .cardtype = TYPE_PCI1723,
 146          .n_aochan = 8,
 147          .n_diochan = 16,
 148          .ao_maxdata = 0xffff,
 149          .rangelist_ao = &range_pci1723,
 150          },
 151 };
 152
 153 /*
 154  * This is used by modprobe to translate PCI IDs to drivers.
 155  * Should only be used for PCI and ISA-PnP devices
 156  */
 157 static DEFINE_PCI_DEVICE_TABLE(pci1723_pci_table) = {
 158         {
 159         PCI_VENDOR_ID_ADVANTECH, 0x1723, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, {
 160         0}
 161 };
 162
 163 MODULE_DEVICE_TABLE(pci, pci1723_pci_table);
 164
 165 /*
 166  * The struct comedi_driver structure tells the Comedi core module
 167  * which functions to call to configure/deconfigure (attach/detach)
 168  * the board, and also about the kernel module that contains
 169  * the device code.
 170  */
 171 static int pci1723_attach(struct comedi_device *dev,
 172                           struct comedi_devconfig *it);
 173 static int pci1723_detach(struct comedi_device *dev);
 174
 175 #define n_boardtypes (sizeof(boardtypes)/sizeof(struct pci1723_board))
 176
 177 static struct comedi_driver driver_pci1723 = {
 178         .driver_name = "adv_pci1723",
 179         .module = THIS_MODULE,
 180         .attach = pci1723_attach,
 181         .detach = pci1723_detach,
 182 };
 183
 184 /* This structure is for data unique to this hardware driver. */
 185 struct pci1723_private {
 186         int valid;              /* card is usable; */
 187
 188         struct pci_dev *pcidev;
 189         unsigned char da_range[8];      /* D/A output range for each channel */
 190
 191         short ao_data[8];       /* data output buffer */
 192 };
 193
 194 /* The following macro to make it easy to access the private structure. */
 195 #define devpriv ((struct pci1723_private *)dev->private)
 196
 197 #define this_board boardtypes
 198
 199 /*
 200  * The pci1723 card reset;
 201  */
 202 static int pci1723_reset(struct comedi_device *dev)
 203 {
 204         int i;
 205         DPRINTK("adv_pci1723 EDBG: BGN: pci1723_reset(...)\n");
 206
 207         outw(0x01, dev->iobase + PCI1723_SYN_SET);
 208                                                /* set synchronous output mode */
 209
 210         for (i = 0; i < 8; i++) {
 211                 /* set all outputs to 0V */
 212                 devpriv->ao_data[i] = 0x8000;
 213                 outw(devpriv->ao_data[i], dev->iobase + PCI1723_DA(i));
 214                 /* set all ranges to +/- 10V */
 215                 devpriv->da_range[i] = 0;
 216                 outw(((devpriv->da_range[i] << 4) | i),
 217                      PCI1723_RANGE_CALIBRATION_MODE);
 218         }
 219
 220         outw(0, dev->iobase + PCI1723_CHANGE_CHA_OUTPUT_TYPE_STROBE);
 221                                                             /* update ranges */
 222         outw(0, dev->iobase + PCI1723_SYN_STROBE);          /* update outputs */
 223
 224         /* set asynchronous output mode */
 225         outw(0, dev->iobase + PCI1723_SYN_SET);
 226
 227         DPRINTK("adv_pci1723 EDBG: END: pci1723_reset(...)\n");
 228         return 0;
 229 }
 230
 231 static int pci1723_insn_read_ao(struct comedi_device *dev,
 232                                 struct comedi_subdevice *s,
 233                                 struct comedi_insn *insn, unsigned int *data)
 234 {
 235         int n, chan;
 236
 237         chan = CR_CHAN(insn->chanspec);
 238         DPRINTK(" adv_PCI1723 DEBUG: pci1723_insn_read_ao() ----- \n");
 239         for (n = 0; n < insn->n; n++)
 240                 data[n] = devpriv->ao_data[chan];
 241
 242         return n;
 243 }
 244
 245 /*
 246   analog data output;
 247 */
 248 static int pci1723_ao_write_winsn(struct comedi_device *dev,
 249                                   struct comedi_subdevice *s,
 250                                   struct comedi_insn *insn, unsigned int *data)
 251 {
 252         int n, chan;
 253         chan = CR_CHAN(insn->chanspec);
 254
 255         DPRINTK("PCI1723: the pci1723_ao_write_winsn() ------\n");
 256
 257         for (n = 0; n < insn->n; n++) {
 258
 259                 devpriv->ao_data[chan] = data[n];
 260                 outw(data[n], dev->iobase + PCI1723_DA(chan));
 261         }
 262
 263         return n;
 264 }
 265
 266 /*
 267   digital i/o config/query
 268 */
 269 static int pci1723_dio_insn_config(struct comedi_device *dev,
 270                                    struct comedi_subdevice *s,
 271                                    struct comedi_insn *insn, unsigned int *data)
 272 {
 273         unsigned int mask;
 274         unsigned int bits;
 275         unsigned short dio_mode;
 276
 277         mask = 1 << CR_CHAN(insn->chanspec);
 278         if (mask & 0x00FF)
 279                 bits = 0x00FF;
 280         else
 281                 bits = 0xFF00;
 282
 283         switch (data[0]) {
 284         case INSN_CONFIG_DIO_INPUT:
 285                 s->io_bits &= ~bits;
 286                 break;
 287         case INSN_CONFIG_DIO_OUTPUT:
 288                 s->io_bits |= bits;
 289                 break;
 290         case INSN_CONFIG_DIO_QUERY:
 291                 data[1] = (s->io_bits & bits) ? COMEDI_OUTPUT : COMEDI_INPUT;
 292                 return insn->n;
 293         default:
 294                 return -EINVAL;
 295         }
 296
 297         /* update hardware DIO mode */
 298         dio_mode = 0x0000;      /* low byte output, high byte output */
 299         if ((s->io_bits & 0x00FF) == 0)
 300                 dio_mode |= 0x0001;     /* low byte input */
 301         if ((s->io_bits & 0xFF00) == 0)
 302                 dio_mode |= 0x0002;     /* high byte input */
 303         outw(dio_mode, dev->iobase + PCI1723_DIGITAL_IO_PORT_SET);
 304         return 1;
 305 }
 306
 307 /*
 308   digital i/o bits read/write
 309 */
 310 static int pci1723_dio_insn_bits(struct comedi_device *dev,
 311                                  struct comedi_subdevice *s,
 312                                  struct comedi_insn *insn, unsigned int *data)
 313 {
 314         if (data[0]) {
 315                 s->state &= ~data[0];
 316                 s->state |= (data[0] & data[1]);
 317                 outw(s->state, dev->iobase + PCI1723_WRITE_DIGITAL_OUTPUT_CMD);
 318         }
 319         data[1] = inw(dev->iobase + PCI1723_READ_DIGITAL_INPUT_DATA);
 320         return 2;
 321 }
 322
 323 /*
 324  * Attach is called by the Comedi core to configure the driver
 325  * for a pci1723 board.
 326  */
 327 static int pci1723_attach(struct comedi_device *dev,
 328                           struct comedi_devconfig *it)
 329 {
 330         struct comedi_subdevice *s;
 331         int ret, subdev, n_subdevices;
 332         struct pci_dev *pcidev;
 333         unsigned int iobase;
 334         unsigned char pci_bus, pci_slot, pci_func;
 335         int opt_bus, opt_slot;
 336         const char *errstr;
 337
 338         printk(KERN_ERR "comedi%d: adv_pci1723: board=%s",
 339                                                 dev->minor, this_board->name);
 340
 341         opt_bus = it->options[0];
 342         opt_slot = it->options[1];
 343
 344         ret = alloc_private(dev, sizeof(struct pci1723_private));
 345         if (ret < 0) {
 346                 printk(" - Allocation failed!\n");
 347                 return -ENOMEM;
 348         }
 349
 350         /* Look for matching PCI device */
 351         errstr = "not found!";
 352         pcidev = NULL;
 353         while (NULL != (pcidev =
 354                         pci_get_device(PCI_VENDOR_ID_ADVANTECH,
 355                                        this_board->device_id, pcidev))) {
 356                 /* Found matching vendor/device. */
 357                 if (opt_bus || opt_slot) {
 358                         /* Check bus/slot. */
 359                         if (opt_bus != pcidev->bus->number
 360                             || opt_slot != PCI_SLOT(pcidev->devfn))
 361                                 continue;       /* no match */
 362                 }
 363                 /*
 364                  * Look for device that isn't in use.
 365                  * Enable PCI device and request regions.
 366                  */
 367                 if (comedi_pci_enable(pcidev, "adv_pci1723")) {
 368                         errstr =
 369                             "failed to enable PCI device and request regions!";
 370                         continue;
 371                 }
 372                 break;
 373         }
 374
 375         if (!pcidev) {
 376                 if (opt_bus || opt_slot) {
 377                         printk(KERN_ERR " - Card at b:s %d:%d %s\n",
 378                                                      opt_bus, opt_slot, errstr);
 379                 } else {
 380                         printk(KERN_ERR " - Card %s\n", errstr);
 381                 }
 382                 return -EIO;
 383         }
 384
 385         pci_bus = pcidev->bus->number;
 386         pci_slot = PCI_SLOT(pcidev->devfn);
 387         pci_func = PCI_FUNC(pcidev->devfn);
 388         iobase = pci_resource_start(pcidev, 2);
 389
 390         printk(KERN_ERR ", b:s:f=%d:%d:%d, io=0x%4x",
 391                                            pci_bus, pci_slot, pci_func, iobase);
 392
 393         dev->iobase = iobase;
 394
 395         dev->board_name = this_board->name;
 396         devpriv->pcidev = pcidev;
 397
 398         n_subdevices = 0;
 399
 400         if (this_board->n_aochan)
 401                 n_subdevices++;
 402         if (this_board->n_diochan)
 403                 n_subdevices++;
 404
 405         ret = alloc_subdevices(dev, n_subdevices);
 406         if (ret < 0) {
 407                 printk(" - Allocation failed!\n");
 408                 return ret;
 409         }
 410
 411         pci1723_reset(dev);
 412         subdev = 0;
 413         if (this_board->n_aochan) {
 414                 s = dev->subdevices + subdev;
 415                 dev->write_subdev = s;
 416                 s->type = COMEDI_SUBD_AO;
 417                 s->subdev_flags = SDF_WRITEABLE | SDF_GROUND | SDF_COMMON;
 418                 s->n_chan = this_board->n_aochan;
 419                 s->maxdata = this_board->ao_maxdata;
 420                 s->len_chanlist = this_board->n_aochan;
 421                 s->range_table = this_board->rangelist_ao;
 422
 423                 s->insn_write = pci1723_ao_write_winsn;
 424                 s->insn_read = pci1723_insn_read_ao;
 425
 426                 /* read DIO config */
 427                 switch (inw(dev->iobase + PCI1723_DIGITAL_IO_PORT_MODE)
 428                                                                        & 0x03) {
 429                 case 0x00:      /* low byte output, high byte output */
 430                         s->io_bits = 0xFFFF;
 431                         break;
 432                 case 0x01:      /* low byte input, high byte output */
 433                         s->io_bits = 0xFF00;
 434                         break;
 435                 case 0x02:      /* low byte output, high byte input */
 436                         s->io_bits = 0x00FF;
 437                         break;
 438                 case 0x03:      /* low byte input, high byte input */
 439                         s->io_bits = 0x0000;
 440                         break;
 441                 }
 442                 /* read DIO port state */
 443                 s->state = inw(dev->iobase + PCI1723_READ_DIGITAL_INPUT_DATA);
 444
 445                 subdev++;
 446         }
 447
 448         if (this_board->n_diochan) {
 449                 s = dev->subdevices + subdev;
 450                 s->type = COMEDI_SUBD_DIO;
 451                 s->subdev_flags =
 452                     SDF_READABLE | SDF_WRITABLE | SDF_GROUND | SDF_COMMON;
 453                 s->n_chan = this_board->n_diochan;
 454                 s->maxdata = 1;
 455                 s->len_chanlist = this_board->n_diochan;
 456                 s->range_table = &range_digital;
 457                 s->insn_config = pci1723_dio_insn_config;
 458                 s->insn_bits = pci1723_dio_insn_bits;
 459                 subdev++;
 460         }
 461
 462         devpriv->valid = 1;
 463
 464         pci1723_reset(dev);
 465
 466         return 0;
 467 }
 468
 469 /*
 470  * _detach is called to deconfigure a device.  It should deallocate
 471  * resources.
 472  * This function is also called when _attach() fails, so it should be
 473  * careful not to release resources that were not necessarily
 474  * allocated by _attach().  dev->private and dev->subdevices are
 475  * deallocated automatically by the core.
 476  */
 477 static int pci1723_detach(struct comedi_device *dev)
 478 {
 479         printk(KERN_ERR "comedi%d: pci1723: remove\n", dev->minor);
 480
 481         if (dev->private) {
 482                 if (devpriv->valid)
 483                         pci1723_reset(dev);
 484
 485                 if (devpriv->pcidev) {
 486                         if (dev->iobase)
 487                                 comedi_pci_disable(devpriv->pcidev);
 488                         pci_dev_put(devpriv->pcidev);
 489                 }
 490         }
 491
 492         return 0;
 493 }
 494
 495 /*
 496  * A convenient macro that defines init_module() and cleanup_module(),
 497  * as necessary.
 498  */
 499 COMEDI_PCI_INITCLEANUP(driver_pci1723, pci1723_pci_table);
 500
 501 MODULE_AUTHOR("Comedi http://www.comedi.org");
 502 MODULE_DESCRIPTION("Comedi low-level driver");
 503 MODULE_LICENSE("GPL");