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[karo-tx-linux.git] / drivers / staging / comedi / drivers / ni_labpc_pci.c
1 /*
2  * comedi/drivers/ni_labpc_pci.c
3  * Driver for National Instruments Lab-PC PCI-1200
4  * Copyright (C) 2001, 2002, 2003 Frank Mori Hess <fmhess@users.sourceforge.net>
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  */
16
17 /*
18  * Driver: ni_labpc_pci
19  * Description: National Instruments Lab-PC PCI-1200
20  * Devices: (National Instruments) PCI-1200 [ni_pci-1200]
21  * Author: Frank Mori Hess <fmhess@users.sourceforge.net>
22  * Status: works
23  *
24  * This is the PCI-specific support split off from the ni_labpc driver.
25  *
26  * Configuration Options: not applicable, uses PCI auto config
27  *
28  * NI manuals:
29  * 340914a (pci-1200)
30  */
31
32 #include <linux/module.h>
33 #include <linux/interrupt.h>
34 #include <linux/pci.h>
35
36 #include "../comedidev.h"
37
38 #include "mite.h"
39 #include "ni_labpc.h"
40
41 enum labpc_pci_boardid {
42         BOARD_NI_PCI1200,
43 };
44
45 static const struct labpc_boardinfo labpc_pci_boards[] = {
46         [BOARD_NI_PCI1200] = {
47                 .name                   = "ni_pci-1200",
48                 .ai_speed               = 10000,
49                 .ai_scan_up             = 1,
50                 .has_ao                 = 1,
51                 .is_labpc1200           = 1,
52                 .has_mmio               = 1,
53         },
54 };
55
56 static int labpc_pci_auto_attach(struct comedi_device *dev,
57                                  unsigned long context)
58 {
59         struct pci_dev *pcidev = comedi_to_pci_dev(dev);
60         const struct labpc_boardinfo *board = NULL;
61         struct labpc_private *devpriv;
62         int ret;
63
64         if (context < ARRAY_SIZE(labpc_pci_boards))
65                 board = &labpc_pci_boards[context];
66         if (!board)
67                 return -ENODEV;
68         dev->board_ptr = board;
69         dev->board_name = board->name;
70
71         ret = comedi_pci_enable(dev);
72         if (ret)
73                 return ret;
74
75         devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
76         if (!devpriv)
77                 return -ENOMEM;
78
79         devpriv->mite = mite_alloc(pcidev);
80         if (!devpriv->mite)
81                 return -ENOMEM;
82         ret = mite_setup(devpriv->mite);
83         if (ret < 0)
84                 return ret;
85         dev->iobase = (unsigned long)devpriv->mite->daq_io_addr;
86
87         return labpc_common_attach(dev, mite_irq(devpriv->mite), IRQF_SHARED);
88 }
89
90 static void labpc_pci_detach(struct comedi_device *dev)
91 {
92         struct labpc_private *devpriv = dev->private;
93
94         if (devpriv && devpriv->mite) {
95                 mite_unsetup(devpriv->mite);
96                 mite_free(devpriv->mite);
97         }
98         if (dev->irq)
99                 free_irq(dev->irq, dev);
100         comedi_pci_disable(dev);
101 }
102
103 static struct comedi_driver labpc_pci_comedi_driver = {
104         .driver_name    = "labpc_pci",
105         .module         = THIS_MODULE,
106         .auto_attach    = labpc_pci_auto_attach,
107         .detach         = labpc_pci_detach,
108 };
109
110 static DEFINE_PCI_DEVICE_TABLE(labpc_pci_table) = {
111         { PCI_VDEVICE(NI, 0x161), BOARD_NI_PCI1200 },
112         { 0 }
113 };
114 MODULE_DEVICE_TABLE(pci, labpc_pci_table);
115
116 static int labpc_pci_probe(struct pci_dev *dev,
117                            const struct pci_device_id *id)
118 {
119         return comedi_pci_auto_config(dev, &labpc_pci_comedi_driver,
120                                       id->driver_data);
121 }
122
123 static struct pci_driver labpc_pci_driver = {
124         .name           = "labpc_pci",
125         .id_table       = labpc_pci_table,
126         .probe          = labpc_pci_probe,
127         .remove         = comedi_pci_auto_unconfig,
128 };
129 module_comedi_pci_driver(labpc_pci_comedi_driver, labpc_pci_driver);
130
131 MODULE_DESCRIPTION("Comedi: National Instruments Lab-PC PCI-1200 driver");
132 MODULE_AUTHOR("Comedi http://www.comedi.org");
133 MODULE_LICENSE("GPL");