1 /*
2 * comedi/drivers/adl_pci8164.c
3 *
4 * Hardware comedi driver for PCI-8164 Adlink card
5 * Copyright (C) 2004 Michel Lachine <mike@mikelachaine.ca>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 */
17
18 /*
19 * Driver: adl_pci8164
20 * Description: Driver for the Adlink PCI-8164 4 Axes Motion Control board
21 * Devices: [ADLink] PCI-8164 (adl_pci8164)
22 * Author: Michel Lachaine <mike@mikelachaine.ca>
23 * Status: experimental
24 * Updated: Mon, 14 Apr 2008 15:10:32 +0100
25 *
26 * Configuration Options: not applicable, uses PCI auto config
27 */
28
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31
32 #include "../comedi_pci.h"
33
34 #define PCI8164_AXIS(x) ((x) * 0x08)
35 #define PCI8164_CMD_MSTS_REG 0x00
36 #define PCI8164_OTP_SSTS_REG 0x02
37 #define PCI8164_BUF0_REG 0x04
38 #define PCI8164_BUF1_REG 0x06
39
adl_pci8164_insn_read(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)40 static int adl_pci8164_insn_read(struct comedi_device *dev,
41 struct comedi_subdevice *s,
42 struct comedi_insn *insn,
43 unsigned int *data)
44 {
45 unsigned long offset = (unsigned long)s->private;
46 unsigned int chan = CR_CHAN(insn->chanspec);
47 int i;
48
49 for (i = 0; i < insn->n; i++)
50 data[i] = inw(dev->iobase + PCI8164_AXIS(chan) + offset);
51
52 return insn->n;
53 }
54
adl_pci8164_insn_write(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)55 static int adl_pci8164_insn_write(struct comedi_device *dev,
56 struct comedi_subdevice *s,
57 struct comedi_insn *insn,
58 unsigned int *data)
59 {
60 unsigned long offset = (unsigned long)s->private;
61 unsigned int chan = CR_CHAN(insn->chanspec);
62 int i;
63
64 for (i = 0; i < insn->n; i++)
65 outw(data[i], dev->iobase + PCI8164_AXIS(chan) + offset);
66
67 return insn->n;
68 }
69
adl_pci8164_auto_attach(struct comedi_device * dev,unsigned long context_unused)70 static int adl_pci8164_auto_attach(struct comedi_device *dev,
71 unsigned long context_unused)
72 {
73 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
74 struct comedi_subdevice *s;
75 int ret;
76
77 ret = comedi_pci_enable(dev);
78 if (ret)
79 return ret;
80 dev->iobase = pci_resource_start(pcidev, 2);
81
82 ret = comedi_alloc_subdevices(dev, 4);
83 if (ret)
84 return ret;
85
86 /* read MSTS register / write CMD register for each axis (channel) */
87 s = &dev->subdevices[0];
88 s->type = COMEDI_SUBD_PROC;
89 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
90 s->n_chan = 4;
91 s->maxdata = 0xffff;
92 s->len_chanlist = 4;
93 s->insn_read = adl_pci8164_insn_read;
94 s->insn_write = adl_pci8164_insn_write;
95 s->private = (void *)PCI8164_CMD_MSTS_REG;
96
97 /* read SSTS register / write OTP register for each axis (channel) */
98 s = &dev->subdevices[1];
99 s->type = COMEDI_SUBD_PROC;
100 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
101 s->n_chan = 4;
102 s->maxdata = 0xffff;
103 s->len_chanlist = 4;
104 s->insn_read = adl_pci8164_insn_read;
105 s->insn_write = adl_pci8164_insn_write;
106 s->private = (void *)PCI8164_OTP_SSTS_REG;
107
108 /* read/write BUF0 register for each axis (channel) */
109 s = &dev->subdevices[2];
110 s->type = COMEDI_SUBD_PROC;
111 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
112 s->n_chan = 4;
113 s->maxdata = 0xffff;
114 s->len_chanlist = 4;
115 s->insn_read = adl_pci8164_insn_read;
116 s->insn_write = adl_pci8164_insn_write;
117 s->private = (void *)PCI8164_BUF0_REG;
118
119 /* read/write BUF1 register for each axis (channel) */
120 s = &dev->subdevices[3];
121 s->type = COMEDI_SUBD_PROC;
122 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
123 s->n_chan = 4;
124 s->maxdata = 0xffff;
125 s->len_chanlist = 4;
126 s->insn_read = adl_pci8164_insn_read;
127 s->insn_write = adl_pci8164_insn_write;
128 s->private = (void *)PCI8164_BUF1_REG;
129
130 return 0;
131 }
132
133 static struct comedi_driver adl_pci8164_driver = {
134 .driver_name = "adl_pci8164",
135 .module = THIS_MODULE,
136 .auto_attach = adl_pci8164_auto_attach,
137 .detach = comedi_pci_detach,
138 };
139
adl_pci8164_pci_probe(struct pci_dev * dev,const struct pci_device_id * id)140 static int adl_pci8164_pci_probe(struct pci_dev *dev,
141 const struct pci_device_id *id)
142 {
143 return comedi_pci_auto_config(dev, &adl_pci8164_driver,
144 id->driver_data);
145 }
146
147 static const struct pci_device_id adl_pci8164_pci_table[] = {
148 { PCI_DEVICE(PCI_VENDOR_ID_ADLINK, 0x8164) },
149 { 0 }
150 };
151 MODULE_DEVICE_TABLE(pci, adl_pci8164_pci_table);
152
153 static struct pci_driver adl_pci8164_pci_driver = {
154 .name = "adl_pci8164",
155 .id_table = adl_pci8164_pci_table,
156 .probe = adl_pci8164_pci_probe,
157 .remove = comedi_pci_auto_unconfig,
158 };
159 module_comedi_pci_driver(adl_pci8164_driver, adl_pci8164_pci_driver);
160
161 MODULE_AUTHOR("Comedi http://www.comedi.org");
162 MODULE_DESCRIPTION("Comedi low-level driver");
163 MODULE_LICENSE("GPL");
164