release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/staging/comedi/drivers/ni_670x.c

   1 /*
   2     comedi/drivers/ni_670x.c
   3     Hardware driver for NI 670x devices
   4
   5     COMEDI - Linux Control and Measurement Device Interface
   6     Copyright (C) 1997-2001 David A. Schleef <ds@schleef.org>
   7
   8     This program is free software; you can redistribute it and/or modify
   9     it under the terms of the GNU General Public License as published by
  10     the Free Software Foundation; either version 2 of the License, or
  11     (at your option) any later version.
  12
  13     This program is distributed in the hope that it will be useful,
  14     but WITHOUT ANY WARRANTY; without even the implied warranty of
  15     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16     GNU General Public License for more details.
  17
  18     You should have received a copy of the GNU General Public License
  19     along with this program; if not, write to the Free Software
  20     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21
  22 */
  23 /*
  24 Driver: ni_670x
  25 Description: National Instruments 670x
  26 Author: Bart Joris <bjoris@advalvas.be>
  27 Updated: Wed, 11 Dec 2002 18:25:35 -0800
  28 Devices: [National Instruments] PCI-6703 (ni_670x), PCI-6704
  29 Status: unknown
  30
  31 Commands are not supported.
  32 */
  33
  34 /*
  35         Bart Joris <bjoris@advalvas.be> Last updated on 20/08/2001
  36
  37         Manuals:
  38
  39         322110a.pdf     PCI/PXI-6704 User Manual
  40         322110b.pdf     PCI/PXI-6703/6704 User Manual
  41
  42 */
  43
  44 #include <linux/interrupt.h>
  45 #include <linux/slab.h>
  46 #include "../comedidev.h"
  47
  48 #include "mite.h"
  49
  50 #define AO_VALUE_OFFSET                 0x00
  51 #define AO_CHAN_OFFSET                  0x0c
  52 #define AO_STATUS_OFFSET                0x10
  53 #define AO_CONTROL_OFFSET               0x10
  54 #define DIO_PORT0_DIR_OFFSET    0x20
  55 #define DIO_PORT0_DATA_OFFSET   0x24
  56 #define DIO_PORT1_DIR_OFFSET    0x28
  57 #define DIO_PORT1_DATA_OFFSET   0x2c
  58 #define MISC_STATUS_OFFSET              0x14
  59 #define MISC_CONTROL_OFFSET             0x14
  60
  61 /* Board description*/
  62
  63 struct ni_670x_board {
  64         unsigned short dev_id;
  65         const char *name;
  66         unsigned short ao_chans;
  67         unsigned short ao_bits;
  68 };
  69
  70 static const struct ni_670x_board ni_670x_boards[] = {
  71         {
  72          .dev_id = 0x2c90,
  73          .name = "PCI-6703",
  74          .ao_chans = 16,
  75          .ao_bits = 16,
  76          },
  77         {
  78          .dev_id = 0x1920,
  79          .name = "PXI-6704",
  80          .ao_chans = 32,
  81          .ao_bits = 16,
  82          },
  83         {
  84          .dev_id = 0x1290,
  85          .name = "PCI-6704",
  86          .ao_chans = 32,
  87          .ao_bits = 16,
  88          },
  89 };
  90
  91 static DEFINE_PCI_DEVICE_TABLE(ni_670x_pci_table) = {
  92         {PCI_DEVICE(PCI_VENDOR_ID_NI, 0x2c90)},
  93         {PCI_DEVICE(PCI_VENDOR_ID_NI, 0x1920)},
  94         {0}
  95 };
  96
  97 MODULE_DEVICE_TABLE(pci, ni_670x_pci_table);
  98
  99 #define thisboard ((struct ni_670x_board *)dev->board_ptr)
 100
 101 struct ni_670x_private {
 102
 103         struct mite_struct *mite;
 104         int boardtype;
 105         int dio;
 106         unsigned int ao_readback[32];
 107 };
 108
 109 #define devpriv ((struct ni_670x_private *)dev->private)
 110 #define n_ni_670x_boards ARRAY_SIZE(ni_670x_boards)
 111
 112 static int ni_670x_attach(struct comedi_device *dev,
 113                           struct comedi_devconfig *it);
 114 static int ni_670x_detach(struct comedi_device *dev);
 115
 116 static struct comedi_driver driver_ni_670x = {
 117         .driver_name = "ni_670x",
 118         .module = THIS_MODULE,
 119         .attach = ni_670x_attach,
 120         .detach = ni_670x_detach,
 121 };
 122
 123 static int __devinit driver_ni_670x_pci_probe(struct pci_dev *dev,
 124                                               const struct pci_device_id *ent)
 125 {
 126         return comedi_pci_auto_config(dev, driver_ni_670x.driver_name);
 127 }
 128
 129 static void __devexit driver_ni_670x_pci_remove(struct pci_dev *dev)
 130 {
 131         comedi_pci_auto_unconfig(dev);
 132 }
 133
 134 static struct pci_driver driver_ni_670x_pci_driver = {
 135         .id_table = ni_670x_pci_table,
 136         .probe = &driver_ni_670x_pci_probe,
 137         .remove = __devexit_p(&driver_ni_670x_pci_remove)
 138 };
 139
 140 static int __init driver_ni_670x_init_module(void)
 141 {
 142         int retval;
 143
 144         retval = comedi_driver_register(&driver_ni_670x);
 145         if (retval < 0)
 146                 return retval;
 147
 148         driver_ni_670x_pci_driver.name = (char *)driver_ni_670x.driver_name;
 149         return pci_register_driver(&driver_ni_670x_pci_driver);
 150 }
 151
 152 static void __exit driver_ni_670x_cleanup_module(void)
 153 {
 154         pci_unregister_driver(&driver_ni_670x_pci_driver);
 155         comedi_driver_unregister(&driver_ni_670x);
 156 }
 157
 158 module_init(driver_ni_670x_init_module);
 159 module_exit(driver_ni_670x_cleanup_module);
 160
 161 static struct comedi_lrange range_0_20mA = { 1, {RANGE_mA(0, 20)} };
 162
 163 static int ni_670x_find_device(struct comedi_device *dev, int bus, int slot);
 164
 165 static int ni_670x_ao_winsn(struct comedi_device *dev,
 166                             struct comedi_subdevice *s,
 167                             struct comedi_insn *insn, unsigned int *data);
 168 static int ni_670x_ao_rinsn(struct comedi_device *dev,
 169                             struct comedi_subdevice *s,
 170                             struct comedi_insn *insn, unsigned int *data);
 171 static int ni_670x_dio_insn_bits(struct comedi_device *dev,
 172                                  struct comedi_subdevice *s,
 173                                  struct comedi_insn *insn, unsigned int *data);
 174 static int ni_670x_dio_insn_config(struct comedi_device *dev,
 175                                    struct comedi_subdevice *s,
 176                                    struct comedi_insn *insn,
 177                                    unsigned int *data);
 178
 179 static int ni_670x_attach(struct comedi_device *dev,
 180                           struct comedi_devconfig *it)
 181 {
 182         struct comedi_subdevice *s;
 183         int ret;
 184         int i;
 185
 186         printk(KERN_INFO "comedi%d: ni_670x: ", dev->minor);
 187
 188         ret = alloc_private(dev, sizeof(struct ni_670x_private));
 189         if (ret < 0)
 190                 return ret;
 191
 192         ret = ni_670x_find_device(dev, it->options[0], it->options[1]);
 193         if (ret < 0)
 194                 return ret;
 195
 196         ret = mite_setup(devpriv->mite);
 197         if (ret < 0) {
 198                 printk(KERN_WARNING "error setting up mite\n");
 199                 return ret;
 200         }
 201         dev->board_name = thisboard->name;
 202         dev->irq = mite_irq(devpriv->mite);
 203         printk(KERN_INFO " %s", dev->board_name);
 204
 205         if (alloc_subdevices(dev, 2) < 0)
 206                 return -ENOMEM;
 207
 208         s = dev->subdevices + 0;
 209         /* analog output subdevice */
 210         s->type = COMEDI_SUBD_AO;
 211         s->subdev_flags = SDF_WRITABLE;
 212         s->n_chan = thisboard->ao_chans;
 213         s->maxdata = 0xffff;
 214         if (s->n_chan == 32) {
 215                 const struct comedi_lrange **range_table_list;
 216
 217                 range_table_list = kmalloc(sizeof(struct comedi_lrange *) * 32,
 218                                            GFP_KERNEL);
 219                 if (!range_table_list)
 220                         return -ENOMEM;
 221                 s->range_table_list = range_table_list;
 222                 for (i = 0; i < 16; i++) {
 223                         range_table_list[i] = &range_bipolar10;
 224                         range_table_list[16 + i] = &range_0_20mA;
 225                 }
 226         } else {
 227                 s->range_table = &range_bipolar10;
 228         }
 229         s->insn_write = &ni_670x_ao_winsn;
 230         s->insn_read = &ni_670x_ao_rinsn;
 231
 232         s = dev->subdevices + 1;
 233         /* digital i/o subdevice */
 234         s->type = COMEDI_SUBD_DIO;
 235         s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
 236         s->n_chan = 8;
 237         s->maxdata = 1;
 238         s->range_table = &range_digital;
 239         s->insn_bits = ni_670x_dio_insn_bits;
 240         s->insn_config = ni_670x_dio_insn_config;
 241
 242         /* Config of misc registers */
 243         writel(0x10, devpriv->mite->daq_io_addr + MISC_CONTROL_OFFSET);
 244         /* Config of ao registers */
 245         writel(0x00, devpriv->mite->daq_io_addr + AO_CONTROL_OFFSET);
 246
 247         printk(KERN_INFO "attached\n");
 248
 249         return 1;
 250 }
 251
 252 static int ni_670x_detach(struct comedi_device *dev)
 253 {
 254         printk(KERN_INFO "comedi%d: ni_670x: remove\n", dev->minor);
 255
 256         kfree(dev->subdevices[0].range_table_list);
 257
 258         if (dev->private && devpriv->mite)
 259                 mite_unsetup(devpriv->mite);
 260
 261         if (dev->irq)
 262                 free_irq(dev->irq, dev);
 263
 264         return 0;
 265 }
 266
 267 static int ni_670x_ao_winsn(struct comedi_device *dev,
 268                             struct comedi_subdevice *s,
 269                             struct comedi_insn *insn, unsigned int *data)
 270 {
 271         int i;
 272         int chan = CR_CHAN(insn->chanspec);
 273
 274         /* Channel number mapping :
 275
 276            NI 6703/ NI 6704     | NI 6704 Only
 277            ----------------------------------------------------
 278            vch(0)       :       0       | ich(16)       :       1
 279            vch(1)       :       2       | ich(17)       :       3
 280            .    :       .       |   .                   .
 281            .    :       .       |   .                   .
 282            .    :       .       |   .                   .
 283            vch(15)      :       30      | ich(31)       :       31      */
 284
 285         for (i = 0; i < insn->n; i++) {
 286                 /* First write in channel register which channel to use */
 287                 writel(((chan & 15) << 1) | ((chan & 16) >> 4),
 288                        devpriv->mite->daq_io_addr + AO_CHAN_OFFSET);
 289                 /* write channel value */
 290                 writel(data[i], devpriv->mite->daq_io_addr + AO_VALUE_OFFSET);
 291                 devpriv->ao_readback[chan] = data[i];
 292         }
 293
 294         return i;
 295 }
 296
 297 static int ni_670x_ao_rinsn(struct comedi_device *dev,
 298                             struct comedi_subdevice *s,
 299                             struct comedi_insn *insn, unsigned int *data)
 300 {
 301         int i;
 302         int chan = CR_CHAN(insn->chanspec);
 303
 304         for (i = 0; i < insn->n; i++)
 305                 data[i] = devpriv->ao_readback[chan];
 306
 307         return i;
 308 }
 309
 310 static int ni_670x_dio_insn_bits(struct comedi_device *dev,
 311                                  struct comedi_subdevice *s,
 312                                  struct comedi_insn *insn, unsigned int *data)
 313 {
 314         if (insn->n != 2)
 315                 return -EINVAL;
 316
 317         /* The insn data is a mask in data[0] and the new data
 318          * in data[1], each channel cooresponding to a bit. */
 319         if (data[0]) {
 320                 s->state &= ~data[0];
 321                 s->state |= data[0] & data[1];
 322                 writel(s->state,
 323                        devpriv->mite->daq_io_addr + DIO_PORT0_DATA_OFFSET);
 324         }
 325
 326         /* on return, data[1] contains the value of the digital
 327          * input lines. */
 328         data[1] = readl(devpriv->mite->daq_io_addr + DIO_PORT0_DATA_OFFSET);
 329
 330         return 2;
 331 }
 332
 333 static int ni_670x_dio_insn_config(struct comedi_device *dev,
 334                                    struct comedi_subdevice *s,
 335                                    struct comedi_insn *insn, unsigned int *data)
 336 {
 337         int chan = CR_CHAN(insn->chanspec);
 338
 339         switch (data[0]) {
 340         case INSN_CONFIG_DIO_OUTPUT:
 341                 s->io_bits |= 1 << chan;
 342                 break;
 343         case INSN_CONFIG_DIO_INPUT:
 344                 s->io_bits &= ~(1 << chan);
 345                 break;
 346         case INSN_CONFIG_DIO_QUERY:
 347                 data[1] =
 348                     (s->io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT;
 349                 return insn->n;
 350                 break;
 351         default:
 352                 return -EINVAL;
 353                 break;
 354         }
 355         writel(s->io_bits, devpriv->mite->daq_io_addr + DIO_PORT0_DIR_OFFSET);
 356
 357         return insn->n;
 358 }
 359
 360 static int ni_670x_find_device(struct comedi_device *dev, int bus, int slot)
 361 {
 362         struct mite_struct *mite;
 363         int i;
 364
 365         for (mite = mite_devices; mite; mite = mite->next) {
 366                 if (mite->used)
 367                         continue;
 368                 if (bus || slot) {
 369                         if (bus != mite->pcidev->bus->number
 370                             || slot != PCI_SLOT(mite->pcidev->devfn))
 371                                 continue;
 372                 }
 373
 374                 for (i = 0; i < n_ni_670x_boards; i++) {
 375                         if (mite_device_id(mite) == ni_670x_boards[i].dev_id) {
 376                                 dev->board_ptr = ni_670x_boards + i;
 377                                 devpriv->mite = mite;
 378
 379                                 return 0;
 380                         }
 381                 }
 382         }
 383         printk(KERN_INFO "no device found\n");
 384         mite_list_devices();
 385         return -EIO;
 386 }