LXR linux/drivers/staging/comedi/drivers/das08

   1/*
   2 *  das08_pci.c
   3 *  comedi driver for DAS08 PCI boards
   4 *
   5 *  COMEDI - Linux Control and Measurement Device Interface
   6 *  Copyright (C) 2000 David A. Schleef <ds@schleef.org>
   7 *  Copyright (C) 2001,2002,2003 Frank Mori Hess <fmhess@users.sourceforge.net>
   8 *  Copyright (C) 2004 Salvador E. Tropea <set@users.sf.net> <set@ieee.org>
   9 *
  10 *  This program is free software; you can redistribute it and/or modify
  11 *  it under the terms of the GNU General Public License as published by
  12 *  the Free Software Foundation; either version 2 of the License, or
  13 *  (at your option) any later version.
  14 *
  15 *  This program is distributed in the hope that it will be useful,
  16 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 *  GNU General Public License for more details.
  19 *
  20 *  You should have received a copy of the GNU General Public License
  21 *  along with this program; if not, write to the Free Software
  22 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23 */
  24
  25/*
  26 * Driver: das08_pci
  27 * Description: DAS-08 PCI compatible boards
  28 * Devices: (ComputerBoards) PCI-DAS08 [pci-das08]
  29 * Author: Warren Jasper, ds, Frank Hess
  30 * Updated: Fri, 31 Aug 2012 19:19:06 +0100
  31 * Status: works
  32 *
  33 * This is the PCI-specific support split off from the das08 driver.
  34 *
  35 * Configuration Options: not applicable, uses PCI auto config
  36 */
  37
  38#include <linux/pci.h>
  39
  40#include "../comedidev.h"
  41
  42#include "das08.h"
  43
  44#define PCI_DEVICE_ID_PCIDAS08          0x0029
  45
  46static const struct das08_board_struct das08_pci_boards[] = {
  47        {
  48                .name           = "pci-das08",
  49                .id             = PCI_DEVICE_ID_PCIDAS08,
  50                .ai_nbits       = 12,
  51                .ai_pg          = das08_bipolar5,
  52                .ai_encoding    = das08_encode12,
  53                .di_nchan       = 3,
  54                .do_nchan       = 4,
  55                .i8254_offset   = 4,
  56                .iosize         = 8,
  57        },
  58};
  59
  60static int das08_pci_auto_attach(struct comedi_device *dev,
  61                                 unsigned long context_unused)
  62{
  63        struct pci_dev *pdev = comedi_to_pci_dev(dev);
  64        struct das08_private_struct *devpriv;
  65        int ret;
  66
  67        devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL);
  68        if (!devpriv)
  69                return -ENOMEM;
  70        dev->private = devpriv;
  71
  72        /* The das08 driver needs the board_ptr */
  73        dev->board_ptr = &das08_pci_boards[0];
  74
  75        ret = comedi_pci_enable(pdev, dev->driver->driver_name);
  76        if (ret)
  77                return ret;
  78        dev->iobase = pci_resource_start(pdev, 2);
  79
  80        return das08_common_attach(dev, dev->iobase);
  81}
  82
  83static void das08_pci_detach(struct comedi_device *dev)
  84{
  85        struct pci_dev *pdev = comedi_to_pci_dev(dev);
  86
  87        das08_common_detach(dev);
  88        if (dev->iobase)
  89                comedi_pci_disable(pdev);
  90}
  91
  92static struct comedi_driver das08_pci_comedi_driver = {
  93        .driver_name    = "pci-das08",
  94        .module         = THIS_MODULE,
  95        .auto_attach    = das08_pci_auto_attach,
  96        .detach         = das08_pci_detach,
  97};
  98
  99static int das08_pci_probe(struct pci_dev *dev,
 100                           const struct pci_device_id *ent)
 101{
 102        return comedi_pci_auto_config(dev, &das08_pci_comedi_driver);
 103}
 104
 105static DEFINE_PCI_DEVICE_TABLE(das08_pci_table) = {
 106        { PCI_DEVICE(PCI_VENDOR_ID_CB, PCI_DEVICE_ID_PCIDAS08) },
 107        { 0 }
 108};
 109MODULE_DEVICE_TABLE(pci, das08_pci_table);
 110
 111static struct pci_driver das08_pci_driver = {
 112        .name           = "pci-das08",
 113        .id_table       = das08_pci_table,
 114        .probe          = das08_pci_probe,
 115        .remove         = comedi_pci_auto_unconfig,
 116};
 117module_comedi_pci_driver(das08_pci_comedi_driver, das08_pci_driver);
 118
 119MODULE_AUTHOR("Comedi http://www.comedi.org");
 120MODULE_DESCRIPTION("Comedi low-level driver");
 121MODULE_LICENSE("GPL");
 122