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Linux/drivers/staging/comedi/drivers/addi_apci_16xx.c

  1 /*
  2  * addi_apci_16xx.c
  3  * Copyright (C) 2004,2005  ADDI-DATA GmbH for the source code of this module.
  4  * Project manager: S. Weber
  5  *
  6  *      ADDI-DATA GmbH
  7  *      Dieselstrasse 3
  8  *      D-77833 Ottersweier
  9  *      Tel: +19(0)7223/9493-0
 10  *      Fax: +49(0)7223/9493-92
 11  *      http://www.addi-data.com
 12  *      info@addi-data.com
 13  *
 14  * This program is free software; you can redistribute it and/or modify it
 15  * under the terms of the GNU General Public License as published by the
 16  * Free Software Foundation; either version 2 of the License, or (at your
 17  * option) any later version.
 18  *
 19  * This program is distributed in the hope that it will be useful, but WITHOUT
 20  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 21  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 22  * more details.
 23  */
 24 
 25 #include <linux/module.h>
 26 
 27 #include "../comedi_pci.h"
 28 
 29 /*
 30  * Register I/O map
 31  */
 32 #define APCI16XX_IN_REG(x)              (((x) * 4) + 0x08)
 33 #define APCI16XX_OUT_REG(x)             (((x) * 4) + 0x14)
 34 #define APCI16XX_DIR_REG(x)             (((x) * 4) + 0x20)
 35 
 36 enum apci16xx_boardid {
 37         BOARD_APCI1648,
 38         BOARD_APCI1696,
 39 };
 40 
 41 struct apci16xx_boardinfo {
 42         const char *name;
 43         int n_chan;
 44 };
 45 
 46 static const struct apci16xx_boardinfo apci16xx_boardtypes[] = {
 47         [BOARD_APCI1648] = {
 48                 .name           = "apci1648",
 49                 .n_chan         = 48,           /* 2 subdevices */
 50         },
 51         [BOARD_APCI1696] = {
 52                 .name           = "apci1696",
 53                 .n_chan         = 96,           /* 3 subdevices */
 54         },
 55 };
 56 
 57 static int apci16xx_insn_config(struct comedi_device *dev,
 58                                 struct comedi_subdevice *s,
 59                                 struct comedi_insn *insn,
 60                                 unsigned int *data)
 61 {
 62         unsigned int chan = CR_CHAN(insn->chanspec);
 63         unsigned int mask;
 64         int ret;
 65 
 66         if (chan < 8)
 67                 mask = 0x000000ff;
 68         else if (chan < 16)
 69                 mask = 0x0000ff00;
 70         else if (chan < 24)
 71                 mask = 0x00ff0000;
 72         else
 73                 mask = 0xff000000;
 74 
 75         ret = comedi_dio_insn_config(dev, s, insn, data, mask);
 76         if (ret)
 77                 return ret;
 78 
 79         outl(s->io_bits, dev->iobase + APCI16XX_DIR_REG(s->index));
 80 
 81         return insn->n;
 82 }
 83 
 84 static int apci16xx_dio_insn_bits(struct comedi_device *dev,
 85                                   struct comedi_subdevice *s,
 86                                   struct comedi_insn *insn,
 87                                   unsigned int *data)
 88 {
 89         if (comedi_dio_update_state(s, data))
 90                 outl(s->state, dev->iobase + APCI16XX_OUT_REG(s->index));
 91 
 92         data[1] = inl(dev->iobase + APCI16XX_IN_REG(s->index));
 93 
 94         return insn->n;
 95 }
 96 
 97 static int apci16xx_auto_attach(struct comedi_device *dev,
 98                                 unsigned long context)
 99 {
100         struct pci_dev *pcidev = comedi_to_pci_dev(dev);
101         const struct apci16xx_boardinfo *board = NULL;
102         struct comedi_subdevice *s;
103         unsigned int n_subdevs;
104         unsigned int last;
105         int i;
106         int ret;
107 
108         if (context < ARRAY_SIZE(apci16xx_boardtypes))
109                 board = &apci16xx_boardtypes[context];
110         if (!board)
111                 return -ENODEV;
112         dev->board_ptr = board;
113         dev->board_name = board->name;
114 
115         ret = comedi_pci_enable(dev);
116         if (ret)
117                 return ret;
118 
119         dev->iobase = pci_resource_start(pcidev, 0);
120 
121         /*
122          * Work out the nubmer of subdevices needed to support all the
123          * digital i/o channels on the board. Each subdevice supports
124          * up to 32 channels.
125          */
126         n_subdevs = board->n_chan / 32;
127         if ((n_subdevs * 32) < board->n_chan) {
128                 last = board->n_chan - (n_subdevs * 32);
129                 n_subdevs++;
130         } else {
131                 last = 0;
132         }
133 
134         ret = comedi_alloc_subdevices(dev, n_subdevs);
135         if (ret)
136                 return ret;
137 
138         /* Initialize the TTL digital i/o subdevices */
139         for (i = 0; i < n_subdevs; i++) {
140                 s = &dev->subdevices[i];
141                 s->type         = COMEDI_SUBD_DIO;
142                 s->subdev_flags = SDF_WRITABLE | SDF_READABLE;
143                 s->n_chan       = ((i * 32) < board->n_chan) ? 32 : last;
144                 s->maxdata      = 1;
145                 s->range_table  = &range_digital;
146                 s->insn_config  = apci16xx_insn_config;
147                 s->insn_bits    = apci16xx_dio_insn_bits;
148 
149                 /* Default all channels to inputs */
150                 s->io_bits      = 0;
151                 outl(s->io_bits, dev->iobase + APCI16XX_DIR_REG(i));
152         }
153 
154         return 0;
155 }
156 
157 static struct comedi_driver apci16xx_driver = {
158         .driver_name    = "addi_apci_16xx",
159         .module         = THIS_MODULE,
160         .auto_attach    = apci16xx_auto_attach,
161         .detach         = comedi_pci_detach,
162 };
163 
164 static int apci16xx_pci_probe(struct pci_dev *dev,
165                               const struct pci_device_id *id)
166 {
167         return comedi_pci_auto_config(dev, &apci16xx_driver, id->driver_data);
168 }
169 
170 static const struct pci_device_id apci16xx_pci_table[] = {
171         { PCI_VDEVICE(ADDIDATA, 0x1009), BOARD_APCI1648 },
172         { PCI_VDEVICE(ADDIDATA, 0x100a), BOARD_APCI1696 },
173         { 0 }
174 };
175 MODULE_DEVICE_TABLE(pci, apci16xx_pci_table);
176 
177 static struct pci_driver apci16xx_pci_driver = {
178         .name           = "addi_apci_16xx",
179         .id_table       = apci16xx_pci_table,
180         .probe          = apci16xx_pci_probe,
181         .remove         = comedi_pci_auto_unconfig,
182 };
183 module_comedi_pci_driver(apci16xx_driver, apci16xx_pci_driver);
184 
185 MODULE_DESCRIPTION("ADDI-DATA APCI-1648/1696, TTL I/O boards");
186 MODULE_AUTHOR("Comedi http://www.comedi.org");
187 MODULE_LICENSE("GPL");
188 

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