Version:  2.0.40 2.2.26 2.4.37 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1

Linux/drivers/staging/comedi/drivers/adv_pci1723.c

  1 /*
  2  * adv_pci1723.c
  3  * Comedi driver for the Advantech PCI-1723 card.
  4  *
  5  * COMEDI - Linux Control and Measurement Device Interface
  6  * Copyright (C) 2000 David A. Schleef <ds@schleef.org>
  7  *
  8  * This program is free software; you can redistribute it and/or modify
  9  * it under the terms of the GNU General Public License as published by
 10  * the Free Software Foundation; either version 2 of the License, or
 11  * (at your option) any later version.
 12  *
 13  * This program is distributed in the hope that it will be useful,
 14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 16  * GNU General Public License for more details.
 17  */
 18 
 19 /*
 20  * Driver: adv_pci1723
 21  * Description: Advantech PCI-1723
 22  * Author: yonggang <rsmgnu@gmail.com>, Ian Abbott <abbotti@mev.co.uk>
 23  * Devices: [Advantech] PCI-1723 (adv_pci1723)
 24  * Updated: Mon, 14 Apr 2008 15:12:56 +0100
 25  * Status: works
 26  *
 27  * Configuration Options: not applicable, uses comedi PCI auto config
 28  *
 29  * Subdevice 0 is 8-channel AO, 16-bit, range +/- 10 V.
 30  *
 31  * Subdevice 1 is 16-channel DIO.  The channels are configurable as
 32  * input or output in 2 groups (0 to 7, 8 to 15). Configuring any
 33  * channel implicitly configures all channels in the same group.
 34  *
 35  * TODO:
 36  * 1. Add the two milliamp ranges to the AO subdevice (0 to 20 mA,
 37  *    4 to 20 mA).
 38  * 2. Read the initial ranges and values of the AO subdevice at
 39  *    start-up instead of reinitializing them.
 40  * 3. Implement calibration.
 41  */
 42 
 43 #include <linux/module.h>
 44 
 45 #include "../comedi_pci.h"
 46 
 47 /*
 48  * PCI Bar 2 I/O Register map (dev->iobase)
 49  */
 50 #define PCI1723_AO_REG(x)               (0x00 + ((x) * 2))
 51 #define PCI1723_BOARD_ID_REG            0x10
 52 #define PCI1723_BOARD_ID_MASK           (0xf << 0)
 53 #define PCI1723_SYNC_CTRL_REG           0x12
 54 #define PCI1723_SYNC_CTRL_ASYNC         (0 << 0)
 55 #define PCI1723_SYNC_CTRL_SYNC          (1 << 0)
 56 #define PCI1723_CTRL_REG                0x14
 57 #define PCI1723_CTRL_BUSY               (1 << 15)
 58 #define PCI1723_CTRL_INIT               (1 << 14)
 59 #define PCI1723_CTRL_SELF               (1 << 8)
 60 #define PCI1723_CTRL_IDX(x)             (((x) & 0x3) << 6)
 61 #define PCI1723_CTRL_RANGE(x)           (((x) & 0x3) << 4)
 62 #define PCI1723_CTRL_GAIN               (0 << 3)
 63 #define PCI1723_CTRL_OFFSET             (1 << 3)
 64 #define PCI1723_CTRL_CHAN(x)            (((x) & 0x7) << 0)
 65 #define PCI1723_CALIB_CTRL_REG          0x16
 66 #define PCI1723_CALIB_CTRL_CS           (1 << 2)
 67 #define PCI1723_CALIB_CTRL_DAT          (1 << 1)
 68 #define PCI1723_CALIB_CTRL_CLK          (1 << 0)
 69 #define PCI1723_CALIB_STROBE_REG        0x18
 70 #define PCI1723_DIO_CTRL_REG            0x1a
 71 #define PCI1723_DIO_CTRL_HDIO           (1 << 1)
 72 #define PCI1723_DIO_CTRL_LDIO           (1 << 0)
 73 #define PCI1723_DIO_DATA_REG            0x1c
 74 #define PCI1723_CALIB_DATA_REG          0x1e
 75 #define PCI1723_SYNC_STROBE_REG         0x20
 76 #define PCI1723_RESET_AO_STROBE_REG     0x22
 77 #define PCI1723_RESET_CALIB_STROBE_REG  0x24
 78 #define PCI1723_RANGE_STROBE_REG        0x26
 79 #define PCI1723_VREF_REG                0x28
 80 #define PCI1723_VREF_NEG10V             (0 << 0)
 81 #define PCI1723_VREF_0V                 (1 << 0)
 82 #define PCI1723_VREF_POS10V             (3 << 0)
 83 
 84 static int pci1723_ao_insn_write(struct comedi_device *dev,
 85                                  struct comedi_subdevice *s,
 86                                  struct comedi_insn *insn,
 87                                  unsigned int *data)
 88 {
 89         unsigned int chan = CR_CHAN(insn->chanspec);
 90         int i;
 91 
 92         for (i = 0; i < insn->n; i++) {
 93                 unsigned int val = data[i];
 94 
 95                 outw(val, dev->iobase + PCI1723_AO_REG(chan));
 96                 s->readback[chan] = val;
 97         }
 98 
 99         return insn->n;
100 }
101 
102 static int pci1723_dio_insn_config(struct comedi_device *dev,
103                                    struct comedi_subdevice *s,
104                                    struct comedi_insn *insn,
105                                    unsigned int *data)
106 {
107         unsigned int chan = CR_CHAN(insn->chanspec);
108         unsigned int mask = (chan < 8) ? 0x00ff : 0xff00;
109         unsigned short mode = 0x0000;           /* assume output */
110         int ret;
111 
112         ret = comedi_dio_insn_config(dev, s, insn, data, mask);
113         if (ret)
114                 return ret;
115 
116         if (!(s->io_bits & 0x00ff))
117                 mode |= PCI1723_DIO_CTRL_LDIO;  /* low byte input */
118         if (!(s->io_bits & 0xff00))
119                 mode |= PCI1723_DIO_CTRL_HDIO;  /* high byte input */
120         outw(mode, dev->iobase + PCI1723_DIO_CTRL_REG);
121 
122         return insn->n;
123 }
124 
125 static int pci1723_dio_insn_bits(struct comedi_device *dev,
126                                  struct comedi_subdevice *s,
127                                  struct comedi_insn *insn,
128                                  unsigned int *data)
129 {
130         if (comedi_dio_update_state(s, data))
131                 outw(s->state, dev->iobase + PCI1723_DIO_DATA_REG);
132 
133         data[1] = inw(dev->iobase + PCI1723_DIO_DATA_REG);
134 
135         return insn->n;
136 }
137 
138 static int pci1723_auto_attach(struct comedi_device *dev,
139                                unsigned long context_unused)
140 {
141         struct pci_dev *pcidev = comedi_to_pci_dev(dev);
142         struct comedi_subdevice *s;
143         unsigned int val;
144         int ret;
145         int i;
146 
147         ret = comedi_pci_enable(dev);
148         if (ret)
149                 return ret;
150         dev->iobase = pci_resource_start(pcidev, 2);
151 
152         ret = comedi_alloc_subdevices(dev, 2);
153         if (ret)
154                 return ret;
155 
156         s = &dev->subdevices[0];
157         s->type         = COMEDI_SUBD_AO;
158         s->subdev_flags = SDF_WRITABLE | SDF_GROUND | SDF_COMMON;
159         s->n_chan       = 8;
160         s->maxdata      = 0xffff;
161         s->range_table  = &range_bipolar10;
162         s->insn_write   = pci1723_ao_insn_write;
163 
164         ret = comedi_alloc_subdev_readback(s);
165         if (ret)
166                 return ret;
167 
168         /* synchronously reset all analog outputs to 0V, +/-10V range */
169         outw(PCI1723_SYNC_CTRL_SYNC, dev->iobase + PCI1723_SYNC_CTRL_REG);
170         for (i = 0; i < s->n_chan; i++) {
171                 outw(PCI1723_CTRL_RANGE(0) | PCI1723_CTRL_CHAN(i),
172                      PCI1723_CTRL_REG);
173                 outw(0, dev->iobase + PCI1723_RANGE_STROBE_REG);
174 
175                 outw(0x8000, dev->iobase + PCI1723_AO_REG(i));
176                 s->readback[i] = 0x8000;
177         }
178         outw(0, dev->iobase + PCI1723_SYNC_STROBE_REG);
179 
180         /* disable syncronous control */
181         outw(PCI1723_SYNC_CTRL_ASYNC, dev->iobase + PCI1723_SYNC_CTRL_REG);
182 
183         s = &dev->subdevices[1];
184         s->type         = COMEDI_SUBD_DIO;
185         s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
186         s->n_chan       = 16;
187         s->maxdata      = 1;
188         s->range_table  = &range_digital;
189         s->insn_config  = pci1723_dio_insn_config;
190         s->insn_bits    = pci1723_dio_insn_bits;
191 
192         /* get initial DIO direction and state */
193         val = inw(dev->iobase + PCI1723_DIO_CTRL_REG);
194         if (!(val & PCI1723_DIO_CTRL_LDIO))
195                 s->io_bits |= 0x00ff;   /* low byte output */
196         if (!(val & PCI1723_DIO_CTRL_HDIO))
197                 s->io_bits |= 0xff00;   /* high byte output */
198         s->state = inw(dev->iobase + PCI1723_DIO_DATA_REG);
199 
200         return 0;
201 }
202 
203 static struct comedi_driver adv_pci1723_driver = {
204         .driver_name    = "adv_pci1723",
205         .module         = THIS_MODULE,
206         .auto_attach    = pci1723_auto_attach,
207         .detach         = comedi_pci_detach,
208 };
209 
210 static int adv_pci1723_pci_probe(struct pci_dev *dev,
211                                  const struct pci_device_id *id)
212 {
213         return comedi_pci_auto_config(dev, &adv_pci1723_driver,
214                                       id->driver_data);
215 }
216 
217 static const struct pci_device_id adv_pci1723_pci_table[] = {
218         { PCI_DEVICE(PCI_VENDOR_ID_ADVANTECH, 0x1723) },
219         { 0 }
220 };
221 MODULE_DEVICE_TABLE(pci, adv_pci1723_pci_table);
222 
223 static struct pci_driver adv_pci1723_pci_driver = {
224         .name           = "adv_pci1723",
225         .id_table       = adv_pci1723_pci_table,
226         .probe          = adv_pci1723_pci_probe,
227         .remove         = comedi_pci_auto_unconfig,
228 };
229 module_comedi_pci_driver(adv_pci1723_driver, adv_pci1723_pci_driver);
230 
231 MODULE_AUTHOR("Comedi http://www.comedi.org");
232 MODULE_DESCRIPTION("Advantech PCI-1723 Comedi driver");
233 MODULE_LICENSE("GPL");
234 

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us