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Linux/drivers/staging/comedi/drivers/addi_apci_1516.c

  1 /*
  2  * addi_apci_1516.c
  3  * Copyright (C) 2004,2005  ADDI-DATA GmbH for the source code of this module.
  4  * Project manager: Eric Stolz
  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 #include <linux/pci.h>
 27 
 28 #include "../comedidev.h"
 29 #include "addi_watchdog.h"
 30 #include "comedi_fc.h"
 31 
 32 /*
 33  * PCI bar 1 I/O Register map - Digital input/output
 34  */
 35 #define APCI1516_DI_REG                 0x00
 36 #define APCI1516_DO_REG                 0x04
 37 
 38 /*
 39  * PCI bar 2 I/O Register map - Watchdog (APCI-1516 and APCI-2016)
 40  */
 41 #define APCI1516_WDOG_REG               0x00
 42 
 43 enum apci1516_boardid {
 44         BOARD_APCI1016,
 45         BOARD_APCI1516,
 46         BOARD_APCI2016,
 47 };
 48 
 49 struct apci1516_boardinfo {
 50         const char *name;
 51         int di_nchan;
 52         int do_nchan;
 53         int has_wdog;
 54 };
 55 
 56 static const struct apci1516_boardinfo apci1516_boardtypes[] = {
 57         [BOARD_APCI1016] = {
 58                 .name           = "apci1016",
 59                 .di_nchan       = 16,
 60         },
 61         [BOARD_APCI1516] = {
 62                 .name           = "apci1516",
 63                 .di_nchan       = 8,
 64                 .do_nchan       = 8,
 65                 .has_wdog       = 1,
 66         },
 67         [BOARD_APCI2016] = {
 68                 .name           = "apci2016",
 69                 .do_nchan       = 16,
 70                 .has_wdog       = 1,
 71         },
 72 };
 73 
 74 struct apci1516_private {
 75         unsigned long wdog_iobase;
 76 };
 77 
 78 static int apci1516_di_insn_bits(struct comedi_device *dev,
 79                                  struct comedi_subdevice *s,
 80                                  struct comedi_insn *insn,
 81                                  unsigned int *data)
 82 {
 83         data[1] = inw(dev->iobase + APCI1516_DI_REG);
 84 
 85         return insn->n;
 86 }
 87 
 88 static int apci1516_do_insn_bits(struct comedi_device *dev,
 89                                  struct comedi_subdevice *s,
 90                                  struct comedi_insn *insn,
 91                                  unsigned int *data)
 92 {
 93         s->state = inw(dev->iobase + APCI1516_DO_REG);
 94 
 95         if (comedi_dio_update_state(s, data))
 96                 outw(s->state, dev->iobase + APCI1516_DO_REG);
 97 
 98         data[1] = s->state;
 99 
100         return insn->n;
101 }
102 
103 static int apci1516_reset(struct comedi_device *dev)
104 {
105         const struct apci1516_boardinfo *this_board = comedi_board(dev);
106         struct apci1516_private *devpriv = dev->private;
107 
108         if (!this_board->has_wdog)
109                 return 0;
110 
111         outw(0x0, dev->iobase + APCI1516_DO_REG);
112 
113         addi_watchdog_reset(devpriv->wdog_iobase);
114 
115         return 0;
116 }
117 
118 static int apci1516_auto_attach(struct comedi_device *dev,
119                                 unsigned long context)
120 {
121         struct pci_dev *pcidev = comedi_to_pci_dev(dev);
122         const struct apci1516_boardinfo *this_board = NULL;
123         struct apci1516_private *devpriv;
124         struct comedi_subdevice *s;
125         int ret;
126 
127         if (context < ARRAY_SIZE(apci1516_boardtypes))
128                 this_board = &apci1516_boardtypes[context];
129         if (!this_board)
130                 return -ENODEV;
131         dev->board_ptr = this_board;
132         dev->board_name = this_board->name;
133 
134         devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
135         if (!devpriv)
136                 return -ENOMEM;
137 
138         ret = comedi_pci_enable(dev);
139         if (ret)
140                 return ret;
141 
142         dev->iobase = pci_resource_start(pcidev, 1);
143         devpriv->wdog_iobase = pci_resource_start(pcidev, 2);
144 
145         ret = comedi_alloc_subdevices(dev, 3);
146         if (ret)
147                 return ret;
148 
149         /* Initialize the digital input subdevice */
150         s = &dev->subdevices[0];
151         if (this_board->di_nchan) {
152                 s->type         = COMEDI_SUBD_DI;
153                 s->subdev_flags = SDF_READABLE;
154                 s->n_chan       = this_board->di_nchan;
155                 s->maxdata      = 1;
156                 s->range_table  = &range_digital;
157                 s->insn_bits    = apci1516_di_insn_bits;
158         } else {
159                 s->type         = COMEDI_SUBD_UNUSED;
160         }
161 
162         /* Initialize the digital output subdevice */
163         s = &dev->subdevices[1];
164         if (this_board->do_nchan) {
165                 s->type         = COMEDI_SUBD_DO;
166                 s->subdev_flags = SDF_WRITEABLE;
167                 s->n_chan       = this_board->do_nchan;
168                 s->maxdata      = 1;
169                 s->range_table  = &range_digital;
170                 s->insn_bits    = apci1516_do_insn_bits;
171         } else {
172                 s->type         = COMEDI_SUBD_UNUSED;
173         }
174 
175         /* Initialize the watchdog subdevice */
176         s = &dev->subdevices[2];
177         if (this_board->has_wdog) {
178                 ret = addi_watchdog_init(s, devpriv->wdog_iobase);
179                 if (ret)
180                         return ret;
181         } else {
182                 s->type         = COMEDI_SUBD_UNUSED;
183         }
184 
185         apci1516_reset(dev);
186         return 0;
187 }
188 
189 static void apci1516_detach(struct comedi_device *dev)
190 {
191         if (dev->iobase)
192                 apci1516_reset(dev);
193         comedi_pci_disable(dev);
194 }
195 
196 static struct comedi_driver apci1516_driver = {
197         .driver_name    = "addi_apci_1516",
198         .module         = THIS_MODULE,
199         .auto_attach    = apci1516_auto_attach,
200         .detach         = apci1516_detach,
201 };
202 
203 static int apci1516_pci_probe(struct pci_dev *dev,
204                               const struct pci_device_id *id)
205 {
206         return comedi_pci_auto_config(dev, &apci1516_driver, id->driver_data);
207 }
208 
209 static const struct pci_device_id apci1516_pci_table[] = {
210         { PCI_VDEVICE(ADDIDATA, 0x1000), BOARD_APCI1016 },
211         { PCI_VDEVICE(ADDIDATA, 0x1001), BOARD_APCI1516 },
212         { PCI_VDEVICE(ADDIDATA, 0x1002), BOARD_APCI2016 },
213         { 0 }
214 };
215 MODULE_DEVICE_TABLE(pci, apci1516_pci_table);
216 
217 static struct pci_driver apci1516_pci_driver = {
218         .name           = "addi_apci_1516",
219         .id_table       = apci1516_pci_table,
220         .probe          = apci1516_pci_probe,
221         .remove         = comedi_pci_auto_unconfig,
222 };
223 module_comedi_pci_driver(apci1516_driver, apci1516_pci_driver);
224 
225 MODULE_DESCRIPTION("ADDI-DATA APCI-1016/1516/2016, 16 channel DIO boards");
226 MODULE_AUTHOR("Comedi http://www.comedi.org");
227 MODULE_LICENSE("GPL");
228 

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