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/pci.h>
  45 #include <linux/interrupt.h>
  46 #include <linux/slab.h>
  47
  48 #include "../comedidev.h"
  49
  50 #include "mite.h"
  51
  52 #define AO_VALUE_OFFSET                 0x00
  53 #define AO_CHAN_OFFSET                  0x0c
  54 #define AO_STATUS_OFFSET                0x10
  55 #define AO_CONTROL_OFFSET               0x10
  56 #define DIO_PORT0_DIR_OFFSET    0x20
  57 #define DIO_PORT0_DATA_OFFSET   0x24
  58 #define DIO_PORT1_DIR_OFFSET    0x28
  59 #define DIO_PORT1_DATA_OFFSET   0x2c
  60 #define MISC_STATUS_OFFSET              0x14
  61 #define MISC_CONTROL_OFFSET             0x14
  62
  63 enum ni_670x_boardid {
  64         BOARD_PCI6703,
  65         BOARD_PXI6704,
  66         BOARD_PCI6704,
  67 };
  68
  69 struct ni_670x_board {
  70         const char *name;
  71         unsigned short ao_chans;
  72 };
  73
  74 static const struct ni_670x_board ni_670x_boards[] = {
  75         [BOARD_PCI6703] = {
  76                 .name           = "PCI-6703",
  77                 .ao_chans       = 16,
  78         },
  79         [BOARD_PXI6704] = {
  80                 .name           = "PXI-6704",
  81                 .ao_chans       = 32,
  82         },
  83         [BOARD_PCI6704] = {
  84                 .name           = "PCI-6704",
  85                 .ao_chans       = 32,
  86         },
  87 };
  88
  89 struct ni_670x_private {
  90
  91         struct mite_struct *mite;
  92         int boardtype;
  93         int dio;
  94         unsigned int ao_readback[32];
  95 };
  96
  97 static int ni_670x_ao_winsn(struct comedi_device *dev,
  98                             struct comedi_subdevice *s,
  99                             struct comedi_insn *insn, unsigned int *data)
 100 {
 101         struct ni_670x_private *devpriv = dev->private;
 102         int i;
 103         int chan = CR_CHAN(insn->chanspec);
 104
 105         /* Channel number mapping :
 106
 107            NI 6703/ NI 6704     | NI 6704 Only
 108            ----------------------------------------------------
 109            vch(0)       :       0       | ich(16)       :       1
 110            vch(1)       :       2       | ich(17)       :       3
 111            .    :       .       |   .                   .
 112            .    :       .       |   .                   .
 113            .    :       .       |   .                   .
 114            vch(15)      :       30      | ich(31)       :       31      */
 115
 116         for (i = 0; i < insn->n; i++) {
 117                 /* First write in channel register which channel to use */
 118                 writel(((chan & 15) << 1) | ((chan & 16) >> 4),
 119                        devpriv->mite->daq_io_addr + AO_CHAN_OFFSET);
 120                 /* write channel value */
 121                 writel(data[i], devpriv->mite->daq_io_addr + AO_VALUE_OFFSET);
 122                 devpriv->ao_readback[chan] = data[i];
 123         }
 124
 125         return i;
 126 }
 127
 128 static int ni_670x_ao_rinsn(struct comedi_device *dev,
 129                             struct comedi_subdevice *s,
 130                             struct comedi_insn *insn, unsigned int *data)
 131 {
 132         struct ni_670x_private *devpriv = dev->private;
 133         int i;
 134         int chan = CR_CHAN(insn->chanspec);
 135
 136         for (i = 0; i < insn->n; i++)
 137                 data[i] = devpriv->ao_readback[chan];
 138
 139         return i;
 140 }
 141
 142 static int ni_670x_dio_insn_bits(struct comedi_device *dev,
 143                                  struct comedi_subdevice *s,
 144                                  struct comedi_insn *insn, unsigned int *data)
 145 {
 146         struct ni_670x_private *devpriv = dev->private;
 147         void __iomem *io_addr = devpriv->mite->daq_io_addr +
 148                                         DIO_PORT0_DATA_OFFSET;
 149         unsigned int mask = data[0];
 150         unsigned int bits = data[1];
 151
 152         if (mask) {
 153                 s->state &= ~mask;
 154                 s->state |= (bits & mask);
 155
 156                 writel(s->state, io_addr);
 157         }
 158
 159         data[1] = readl(io_addr);
 160
 161         return insn->n;
 162 }
 163
 164 static int ni_670x_dio_insn_config(struct comedi_device *dev,
 165                                    struct comedi_subdevice *s,
 166                                    struct comedi_insn *insn, unsigned int *data)
 167 {
 168         struct ni_670x_private *devpriv = dev->private;
 169         int chan = CR_CHAN(insn->chanspec);
 170
 171         switch (data[0]) {
 172         case INSN_CONFIG_DIO_OUTPUT:
 173                 s->io_bits |= 1 << chan;
 174                 break;
 175         case INSN_CONFIG_DIO_INPUT:
 176                 s->io_bits &= ~(1 << chan);
 177                 break;
 178         case INSN_CONFIG_DIO_QUERY:
 179                 data[1] =
 180                     (s->io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT;
 181                 return insn->n;
 182                 break;
 183         default:
 184                 return -EINVAL;
 185                 break;
 186         }
 187         writel(s->io_bits, devpriv->mite->daq_io_addr + DIO_PORT0_DIR_OFFSET);
 188
 189         return insn->n;
 190 }
 191
 192 static int ni_670x_auto_attach(struct comedi_device *dev,
 193                                unsigned long context)
 194 {
 195         struct pci_dev *pcidev = comedi_to_pci_dev(dev);
 196         const struct ni_670x_board *thisboard = NULL;
 197         struct ni_670x_private *devpriv;
 198         struct comedi_subdevice *s;
 199         int ret;
 200         int i;
 201
 202         if (context < ARRAY_SIZE(ni_670x_boards))
 203                 thisboard = &ni_670x_boards[context];
 204         if (!thisboard)
 205                 return -ENODEV;
 206         dev->board_ptr = thisboard;
 207         dev->board_name = thisboard->name;
 208
 209         ret = comedi_pci_enable(dev);
 210         if (ret)
 211                 return ret;
 212
 213         devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL);
 214         if (!devpriv)
 215                 return -ENOMEM;
 216         dev->private = devpriv;
 217
 218         devpriv->mite = mite_alloc(pcidev);
 219         if (!devpriv->mite)
 220                 return -ENOMEM;
 221
 222         ret = mite_setup(devpriv->mite);
 223         if (ret < 0) {
 224                 dev_warn(dev->class_dev, "error setting up mite\n");
 225                 return ret;
 226         }
 227
 228         ret = comedi_alloc_subdevices(dev, 2);
 229         if (ret)
 230                 return ret;
 231
 232         s = &dev->subdevices[0];
 233         /* analog output subdevice */
 234         s->type = COMEDI_SUBD_AO;
 235         s->subdev_flags = SDF_WRITABLE;
 236         s->n_chan = thisboard->ao_chans;
 237         s->maxdata = 0xffff;
 238         if (s->n_chan == 32) {
 239                 const struct comedi_lrange **range_table_list;
 240
 241                 range_table_list = kmalloc(sizeof(struct comedi_lrange *) * 32,
 242                                            GFP_KERNEL);
 243                 if (!range_table_list)
 244                         return -ENOMEM;
 245                 s->range_table_list = range_table_list;
 246                 for (i = 0; i < 16; i++) {
 247                         range_table_list[i] = &range_bipolar10;
 248                         range_table_list[16 + i] = &range_0_20mA;
 249                 }
 250         } else {
 251                 s->range_table = &range_bipolar10;
 252         }
 253         s->insn_write = &ni_670x_ao_winsn;
 254         s->insn_read = &ni_670x_ao_rinsn;
 255
 256         s = &dev->subdevices[1];
 257         /* digital i/o subdevice */
 258         s->type = COMEDI_SUBD_DIO;
 259         s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
 260         s->n_chan = 8;
 261         s->maxdata = 1;
 262         s->range_table = &range_digital;
 263         s->insn_bits = ni_670x_dio_insn_bits;
 264         s->insn_config = ni_670x_dio_insn_config;
 265
 266         /* Config of misc registers */
 267         writel(0x10, devpriv->mite->daq_io_addr + MISC_CONTROL_OFFSET);
 268         /* Config of ao registers */
 269         writel(0x00, devpriv->mite->daq_io_addr + AO_CONTROL_OFFSET);
 270
 271         dev_info(dev->class_dev, "%s: %s attached\n",
 272                 dev->driver->driver_name, dev->board_name);
 273
 274         return 0;
 275 }
 276
 277 static void ni_670x_detach(struct comedi_device *dev)
 278 {
 279         struct ni_670x_private *devpriv = dev->private;
 280         struct comedi_subdevice *s;
 281
 282         if (dev->n_subdevices) {
 283                 s = &dev->subdevices[0];
 284                 if (s)
 285                         kfree(s->range_table_list);
 286         }
 287         if (devpriv && devpriv->mite) {
 288                 mite_unsetup(devpriv->mite);
 289                 mite_free(devpriv->mite);
 290         }
 291         comedi_pci_disable(dev);
 292 }
 293
 294 static struct comedi_driver ni_670x_driver = {
 295         .driver_name    = "ni_670x",
 296         .module         = THIS_MODULE,
 297         .auto_attach    = ni_670x_auto_attach,
 298         .detach         = ni_670x_detach,
 299 };
 300
 301 static int ni_670x_pci_probe(struct pci_dev *dev,
 302                              const struct pci_device_id *id)
 303 {
 304         return comedi_pci_auto_config(dev, &ni_670x_driver, id->driver_data);
 305 }
 306
 307 static DEFINE_PCI_DEVICE_TABLE(ni_670x_pci_table) = {
 308         { PCI_VDEVICE(NI, 0x1290), BOARD_PCI6704 },
 309         { PCI_VDEVICE(NI, 0x1920), BOARD_PXI6704 },
 310         { PCI_VDEVICE(NI, 0x2c90), BOARD_PCI6703 },
 311         { 0 }
 312 };
 313 MODULE_DEVICE_TABLE(pci, ni_670x_pci_table);
 314
 315 static struct pci_driver ni_670x_pci_driver = {
 316         .name           = "ni_670x",
 317         .id_table       = ni_670x_pci_table,
 318         .probe          = ni_670x_pci_probe,
 319         .remove         = comedi_pci_auto_unconfig,
 320 };
 321 module_comedi_pci_driver(ni_670x_driver, ni_670x_pci_driver);
 322
 323 MODULE_AUTHOR("Comedi http://www.comedi.org");
 324 MODULE_DESCRIPTION("Comedi low-level driver");
 325 MODULE_LICENSE("GPL");