root/drivers/staging/comedi/drivers/addi_apci_16xx.c

DEFINITIONS

1. apci16xx_insn_config
2. apci16xx_dio_insn_bits
3. apci16xx_auto_attach
4. apci16xx_pci_probe

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * addi_apci_16xx.c
   4  * Copyright (C) 2004,2005  ADDI-DATA GmbH for the source code of this module.
   5  * Project manager: S. Weber
   6  *
   7  *      ADDI-DATA GmbH
   8  *      Dieselstrasse 3
   9  *      D-77833 Ottersweier
  10  *      Tel: +19(0)7223/9493-0
  11  *      Fax: +49(0)7223/9493-92
  12  *      http://www.addi-data.com
  13  *      info@addi-data.com
  14  */
  15 
  16 #include <linux/module.h>
  17 
  18 #include "../comedi_pci.h"
  19 
  20 /*
  21  * Register I/O map
  22  */
  23 #define APCI16XX_IN_REG(x)              (((x) * 4) + 0x08)
  24 #define APCI16XX_OUT_REG(x)             (((x) * 4) + 0x14)
  25 #define APCI16XX_DIR_REG(x)             (((x) * 4) + 0x20)
  26 
  27 enum apci16xx_boardid {
  28         BOARD_APCI1648,
  29         BOARD_APCI1696,
  30 };
  31 
  32 struct apci16xx_boardinfo {
  33         const char *name;
  34         int n_chan;
  35 };
  36 
  37 static const struct apci16xx_boardinfo apci16xx_boardtypes[] = {
  38         [BOARD_APCI1648] = {
  39                 .name           = "apci1648",
  40                 .n_chan         = 48,           /* 2 subdevices */
  41         },
  42         [BOARD_APCI1696] = {
  43                 .name           = "apci1696",
  44                 .n_chan         = 96,           /* 3 subdevices */
  45         },
  46 };
  47 
  48 static int apci16xx_insn_config(struct comedi_device *dev,
  49                                 struct comedi_subdevice *s,
  50                                 struct comedi_insn *insn,
  51                                 unsigned int *data)
  52 {
  53         unsigned int chan = CR_CHAN(insn->chanspec);
  54         unsigned int mask;
  55         int ret;
  56 
  57         if (chan < 8)
  58                 mask = 0x000000ff;
  59         else if (chan < 16)
  60                 mask = 0x0000ff00;
  61         else if (chan < 24)
  62                 mask = 0x00ff0000;
  63         else
  64                 mask = 0xff000000;
  65 
  66         ret = comedi_dio_insn_config(dev, s, insn, data, mask);
  67         if (ret)
  68                 return ret;
  69 
  70         outl(s->io_bits, dev->iobase + APCI16XX_DIR_REG(s->index));
  71 
  72         return insn->n;
  73 }
  74 
  75 static int apci16xx_dio_insn_bits(struct comedi_device *dev,
  76                                   struct comedi_subdevice *s,
  77                                   struct comedi_insn *insn,
  78                                   unsigned int *data)
  79 {
  80         if (comedi_dio_update_state(s, data))
  81                 outl(s->state, dev->iobase + APCI16XX_OUT_REG(s->index));
  82 
  83         data[1] = inl(dev->iobase + APCI16XX_IN_REG(s->index));
  84 
  85         return insn->n;
  86 }
  87 
  88 static int apci16xx_auto_attach(struct comedi_device *dev,
  89                                 unsigned long context)
  90 {
  91         struct pci_dev *pcidev = comedi_to_pci_dev(dev);
  92         const struct apci16xx_boardinfo *board = NULL;
  93         struct comedi_subdevice *s;
  94         unsigned int n_subdevs;
  95         unsigned int last;
  96         int i;
  97         int ret;
  98 
  99         if (context < ARRAY_SIZE(apci16xx_boardtypes))
 100                 board = &apci16xx_boardtypes[context];
 101         if (!board)
 102                 return -ENODEV;
 103         dev->board_ptr = board;
 104         dev->board_name = board->name;
 105 
 106         ret = comedi_pci_enable(dev);
 107         if (ret)
 108                 return ret;
 109 
 110         dev->iobase = pci_resource_start(pcidev, 0);
 111 
 112         /*
 113          * Work out the nubmer of subdevices needed to support all the
 114          * digital i/o channels on the board. Each subdevice supports
 115          * up to 32 channels.
 116          */
 117         n_subdevs = board->n_chan / 32;
 118         if ((n_subdevs * 32) < board->n_chan) {
 119                 last = board->n_chan - (n_subdevs * 32);
 120                 n_subdevs++;
 121         } else {
 122                 last = 0;
 123         }
 124 
 125         ret = comedi_alloc_subdevices(dev, n_subdevs);
 126         if (ret)
 127                 return ret;
 128 
 129         /* Initialize the TTL digital i/o subdevices */
 130         for (i = 0; i < n_subdevs; i++) {
 131                 s = &dev->subdevices[i];
 132                 s->type         = COMEDI_SUBD_DIO;
 133                 s->subdev_flags = SDF_WRITABLE | SDF_READABLE;
 134                 s->n_chan       = ((i * 32) < board->n_chan) ? 32 : last;
 135                 s->maxdata      = 1;
 136                 s->range_table  = &range_digital;
 137                 s->insn_config  = apci16xx_insn_config;
 138                 s->insn_bits    = apci16xx_dio_insn_bits;
 139 
 140                 /* Default all channels to inputs */
 141                 s->io_bits      = 0;
 142                 outl(s->io_bits, dev->iobase + APCI16XX_DIR_REG(i));
 143         }
 144 
 145         return 0;
 146 }
 147 
 148 static struct comedi_driver apci16xx_driver = {
 149         .driver_name    = "addi_apci_16xx",
 150         .module         = THIS_MODULE,
 151         .auto_attach    = apci16xx_auto_attach,
 152         .detach         = comedi_pci_detach,
 153 };
 154 
 155 static int apci16xx_pci_probe(struct pci_dev *dev,
 156                               const struct pci_device_id *id)
 157 {
 158         return comedi_pci_auto_config(dev, &apci16xx_driver, id->driver_data);
 159 }
 160 
 161 static const struct pci_device_id apci16xx_pci_table[] = {
 162         { PCI_VDEVICE(ADDIDATA, 0x1009), BOARD_APCI1648 },
 163         { PCI_VDEVICE(ADDIDATA, 0x100a), BOARD_APCI1696 },
 164         { 0 }
 165 };
 166 MODULE_DEVICE_TABLE(pci, apci16xx_pci_table);
 167 
 168 static struct pci_driver apci16xx_pci_driver = {
 169         .name           = "addi_apci_16xx",
 170         .id_table       = apci16xx_pci_table,
 171         .probe          = apci16xx_pci_probe,
 172         .remove         = comedi_pci_auto_unconfig,
 173 };
 174 module_comedi_pci_driver(apci16xx_driver, apci16xx_pci_driver);
 175 
 176 MODULE_DESCRIPTION("ADDI-DATA APCI-1648/1696, TTL I/O boards");
 177 MODULE_AUTHOR("Comedi http://www.comedi.org");
 178 MODULE_LICENSE("GPL");