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         const char *name;
  65         unsigned short dev_id;
  66         unsigned short ao_chans;
  67 };
  68
  69 static const struct ni_670x_board ni_670x_boards[] = {
  70         {
  71                 .name           = "PCI-6703",
  72                 .dev_id         = 0x2c90,
  73                 .ao_chans       = 16,
  74         }, {
  75                 .name           = "PXI-6704",
  76                 .dev_id         = 0x1920,
  77                 .ao_chans       = 32,
  78         }, {
  79                 .name           = "PCI-6704",
  80                 .dev_id         = 0x1290,
  81                 .ao_chans       = 32,
  82         },
  83 };
  84
  85 struct ni_670x_private {
  86
  87         struct mite_struct *mite;
  88         int boardtype;
  89         int dio;
  90         unsigned int ao_readback[32];
  91 };
  92
  93 static struct comedi_lrange range_0_20mA = { 1, {RANGE_mA(0, 20)} };
  94
  95 static int ni_670x_ao_winsn(struct comedi_device *dev,
  96                             struct comedi_subdevice *s,
  97                             struct comedi_insn *insn, unsigned int *data)
  98 {
  99         struct ni_670x_private *devpriv = dev->private;
 100         int i;
 101         int chan = CR_CHAN(insn->chanspec);
 102
 103         /* Channel number mapping :
 104
 105            NI 6703/ NI 6704     | NI 6704 Only
 106            ----------------------------------------------------
 107            vch(0)       :       0       | ich(16)       :       1
 108            vch(1)       :       2       | ich(17)       :       3
 109            .    :       .       |   .                   .
 110            .    :       .       |   .                   .
 111            .    :       .       |   .                   .
 112            vch(15)      :       30      | ich(31)       :       31      */
 113
 114         for (i = 0; i < insn->n; i++) {
 115                 /* First write in channel register which channel to use */
 116                 writel(((chan & 15) << 1) | ((chan & 16) >> 4),
 117                        devpriv->mite->daq_io_addr + AO_CHAN_OFFSET);
 118                 /* write channel value */
 119                 writel(data[i], devpriv->mite->daq_io_addr + AO_VALUE_OFFSET);
 120                 devpriv->ao_readback[chan] = data[i];
 121         }
 122
 123         return i;
 124 }
 125
 126 static int ni_670x_ao_rinsn(struct comedi_device *dev,
 127                             struct comedi_subdevice *s,
 128                             struct comedi_insn *insn, unsigned int *data)
 129 {
 130         struct ni_670x_private *devpriv = dev->private;
 131         int i;
 132         int chan = CR_CHAN(insn->chanspec);
 133
 134         for (i = 0; i < insn->n; i++)
 135                 data[i] = devpriv->ao_readback[chan];
 136
 137         return i;
 138 }
 139
 140 static int ni_670x_dio_insn_bits(struct comedi_device *dev,
 141                                  struct comedi_subdevice *s,
 142                                  struct comedi_insn *insn, unsigned int *data)
 143 {
 144         struct ni_670x_private *devpriv = dev->private;
 145         void __iomem *io_addr = devpriv->mite->daq_io_addr +
 146                                         DIO_PORT0_DATA_OFFSET;
 147         unsigned int mask = data[0];
 148         unsigned int bits = data[1];
 149
 150         if (mask) {
 151                 s->state &= ~mask;
 152                 s->state |= (bits & mask);
 153
 154                 writel(s->state, io_addr);
 155         }
 156
 157         data[1] = readl(io_addr);
 158
 159         return insn->n;
 160 }
 161
 162 static int ni_670x_dio_insn_config(struct comedi_device *dev,
 163                                    struct comedi_subdevice *s,
 164                                    struct comedi_insn *insn, unsigned int *data)
 165 {
 166         struct ni_670x_private *devpriv = dev->private;
 167         int chan = CR_CHAN(insn->chanspec);
 168
 169         switch (data[0]) {
 170         case INSN_CONFIG_DIO_OUTPUT:
 171                 s->io_bits |= 1 << chan;
 172                 break;
 173         case INSN_CONFIG_DIO_INPUT:
 174                 s->io_bits &= ~(1 << chan);
 175                 break;
 176         case INSN_CONFIG_DIO_QUERY:
 177                 data[1] =
 178                     (s->io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT;
 179                 return insn->n;
 180                 break;
 181         default:
 182                 return -EINVAL;
 183                 break;
 184         }
 185         writel(s->io_bits, devpriv->mite->daq_io_addr + DIO_PORT0_DIR_OFFSET);
 186
 187         return insn->n;
 188 }
 189
 190 static const struct ni_670x_board *
 191 ni_670x_find_boardinfo(struct pci_dev *pcidev)
 192 {
 193         unsigned int dev_id = pcidev->device;
 194         unsigned int n;
 195
 196         for (n = 0; n < ARRAY_SIZE(ni_670x_boards); n++) {
 197                 const struct ni_670x_board *board = &ni_670x_boards[n];
 198                 if (board->dev_id == dev_id)
 199                         return board;
 200         }
 201         return NULL;
 202 }
 203
 204 static int __devinit ni_670x_attach_pci(struct comedi_device *dev,
 205                                         struct pci_dev *pcidev)
 206 {
 207         const struct ni_670x_board *thisboard;
 208         struct ni_670x_private *devpriv;
 209         struct comedi_subdevice *s;
 210         int ret;
 211         int i;
 212
 213         ret = alloc_private(dev, sizeof(*devpriv));
 214         if (ret < 0)
 215                 return ret;
 216         devpriv = dev->private;
 217         dev->board_ptr = ni_670x_find_boardinfo(pcidev);
 218         if (!dev->board_ptr)
 219                 return -ENODEV;
 220         devpriv->mite = mite_alloc(pcidev);
 221         if (!devpriv->mite)
 222                 return -ENOMEM;
 223         thisboard = comedi_board(dev);
 224
 225         ret = mite_setup(devpriv->mite);
 226         if (ret < 0) {
 227                 dev_warn(dev->class_dev, "error setting up mite\n");
 228                 return ret;
 229         }
 230         dev->board_name = thisboard->name;
 231
 232         ret = comedi_alloc_subdevices(dev, 2);
 233         if (ret)
 234                 return ret;
 235
 236         s = &dev->subdevices[0];
 237         /* analog output subdevice */
 238         s->type = COMEDI_SUBD_AO;
 239         s->subdev_flags = SDF_WRITABLE;
 240         s->n_chan = thisboard->ao_chans;
 241         s->maxdata = 0xffff;
 242         if (s->n_chan == 32) {
 243                 const struct comedi_lrange **range_table_list;
 244
 245                 range_table_list = kmalloc(sizeof(struct comedi_lrange *) * 32,
 246                                            GFP_KERNEL);
 247                 if (!range_table_list)
 248                         return -ENOMEM;
 249                 s->range_table_list = range_table_list;
 250                 for (i = 0; i < 16; i++) {
 251                         range_table_list[i] = &range_bipolar10;
 252                         range_table_list[16 + i] = &range_0_20mA;
 253                 }
 254         } else {
 255                 s->range_table = &range_bipolar10;
 256         }
 257         s->insn_write = &ni_670x_ao_winsn;
 258         s->insn_read = &ni_670x_ao_rinsn;
 259
 260         s = &dev->subdevices[1];
 261         /* digital i/o subdevice */
 262         s->type = COMEDI_SUBD_DIO;
 263         s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
 264         s->n_chan = 8;
 265         s->maxdata = 1;
 266         s->range_table = &range_digital;
 267         s->insn_bits = ni_670x_dio_insn_bits;
 268         s->insn_config = ni_670x_dio_insn_config;
 269
 270         /* Config of misc registers */
 271         writel(0x10, devpriv->mite->daq_io_addr + MISC_CONTROL_OFFSET);
 272         /* Config of ao registers */
 273         writel(0x00, devpriv->mite->daq_io_addr + AO_CONTROL_OFFSET);
 274
 275         dev_info(dev->class_dev, "%s: %s attached\n",
 276                 dev->driver->driver_name, dev->board_name);
 277
 278         return 0;
 279 }
 280
 281 static void ni_670x_detach(struct comedi_device *dev)
 282 {
 283         struct ni_670x_private *devpriv = dev->private;
 284         struct comedi_subdevice *s;
 285
 286         if (dev->n_subdevices) {
 287                 s = &dev->subdevices[0];
 288                 if (s)
 289                         kfree(s->range_table_list);
 290         }
 291         if (devpriv && devpriv->mite) {
 292                 mite_unsetup(devpriv->mite);
 293                 mite_free(devpriv->mite);
 294         }
 295 }
 296
 297 static struct comedi_driver ni_670x_driver = {
 298         .driver_name    = "ni_670x",
 299         .module         = THIS_MODULE,
 300         .attach_pci     = ni_670x_attach_pci,
 301         .detach         = ni_670x_detach,
 302 };
 303
 304 static int __devinit ni_670x_pci_probe(struct pci_dev *dev,
 305                                        const struct pci_device_id *ent)
 306 {
 307         return comedi_pci_auto_config(dev, &ni_670x_driver);
 308 }
 309
 310 static void __devexit ni_670x_pci_remove(struct pci_dev *dev)
 311 {
 312         comedi_pci_auto_unconfig(dev);
 313 }
 314
 315 static DEFINE_PCI_DEVICE_TABLE(ni_670x_pci_table) = {
 316         { PCI_DEVICE(PCI_VENDOR_ID_NI, 0x2c90) },
 317         { PCI_DEVICE(PCI_VENDOR_ID_NI, 0x1920) },
 318         { 0 }
 319 };
 320 MODULE_DEVICE_TABLE(pci, ni_670x_pci_table);
 321
 322 static struct pci_driver ni_670x_pci_driver = {
 323         .name           ="ni_670x",
 324         .id_table       = ni_670x_pci_table,
 325         .probe          = ni_670x_pci_probe,
 326         .remove         = __devexit_p(ni_670x_pci_remove),
 327 };
 328 module_comedi_pci_driver(ni_670x_driver, ni_670x_pci_driver);
 329
 330 MODULE_AUTHOR("Comedi http://www.comedi.org");
 331 MODULE_DESCRIPTION("Comedi low-level driver");
 332 MODULE_LICENSE("GPL");