1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * comedi/drivers/adl_pci8164.c
4 *
5 * Hardware comedi driver for PCI-8164 Adlink card
6 * Copyright (C) 2004 Michel Lachine <mike@mikelachaine.ca>
7 */
8
9 /*
10 * Driver: adl_pci8164
11 * Description: Driver for the Adlink PCI-8164 4 Axes Motion Control board
12 * Devices: [ADLink] PCI-8164 (adl_pci8164)
13 * Author: Michel Lachaine <mike@mikelachaine.ca>
14 * Status: experimental
15 * Updated: Mon, 14 Apr 2008 15:10:32 +0100
16 *
17 * Configuration Options: not applicable, uses PCI auto config
18 */
19
20 #include <linux/kernel.h>
21 #include <linux/module.h>
22 #include <linux/comedi/comedi_pci.h>
23
24 #define PCI8164_AXIS(x) ((x) * 0x08)
25 #define PCI8164_CMD_MSTS_REG 0x00
26 #define PCI8164_OTP_SSTS_REG 0x02
27 #define PCI8164_BUF0_REG 0x04
28 #define PCI8164_BUF1_REG 0x06
29
adl_pci8164_insn_read(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)30 static int adl_pci8164_insn_read(struct comedi_device *dev,
31 struct comedi_subdevice *s,
32 struct comedi_insn *insn,
33 unsigned int *data)
34 {
35 unsigned long offset = (unsigned long)s->private;
36 unsigned int chan = CR_CHAN(insn->chanspec);
37 int i;
38
39 for (i = 0; i < insn->n; i++)
40 data[i] = inw(dev->iobase + PCI8164_AXIS(chan) + offset);
41
42 return insn->n;
43 }
44
adl_pci8164_insn_write(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)45 static int adl_pci8164_insn_write(struct comedi_device *dev,
46 struct comedi_subdevice *s,
47 struct comedi_insn *insn,
48 unsigned int *data)
49 {
50 unsigned long offset = (unsigned long)s->private;
51 unsigned int chan = CR_CHAN(insn->chanspec);
52 int i;
53
54 for (i = 0; i < insn->n; i++)
55 outw(data[i], dev->iobase + PCI8164_AXIS(chan) + offset);
56
57 return insn->n;
58 }
59
adl_pci8164_auto_attach(struct comedi_device * dev,unsigned long context_unused)60 static int adl_pci8164_auto_attach(struct comedi_device *dev,
61 unsigned long context_unused)
62 {
63 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
64 struct comedi_subdevice *s;
65 int ret;
66
67 ret = comedi_pci_enable(dev);
68 if (ret)
69 return ret;
70 dev->iobase = pci_resource_start(pcidev, 2);
71
72 ret = comedi_alloc_subdevices(dev, 4);
73 if (ret)
74 return ret;
75
76 /* read MSTS register / write CMD register for each axis (channel) */
77 s = &dev->subdevices[0];
78 s->type = COMEDI_SUBD_PROC;
79 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
80 s->n_chan = 4;
81 s->maxdata = 0xffff;
82 s->len_chanlist = 4;
83 s->insn_read = adl_pci8164_insn_read;
84 s->insn_write = adl_pci8164_insn_write;
85 s->private = (void *)PCI8164_CMD_MSTS_REG;
86
87 /* read SSTS register / write OTP register for each axis (channel) */
88 s = &dev->subdevices[1];
89 s->type = COMEDI_SUBD_PROC;
90 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
91 s->n_chan = 4;
92 s->maxdata = 0xffff;
93 s->len_chanlist = 4;
94 s->insn_read = adl_pci8164_insn_read;
95 s->insn_write = adl_pci8164_insn_write;
96 s->private = (void *)PCI8164_OTP_SSTS_REG;
97
98 /* read/write BUF0 register for each axis (channel) */
99 s = &dev->subdevices[2];
100 s->type = COMEDI_SUBD_PROC;
101 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
102 s->n_chan = 4;
103 s->maxdata = 0xffff;
104 s->len_chanlist = 4;
105 s->insn_read = adl_pci8164_insn_read;
106 s->insn_write = adl_pci8164_insn_write;
107 s->private = (void *)PCI8164_BUF0_REG;
108
109 /* read/write BUF1 register for each axis (channel) */
110 s = &dev->subdevices[3];
111 s->type = COMEDI_SUBD_PROC;
112 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
113 s->n_chan = 4;
114 s->maxdata = 0xffff;
115 s->len_chanlist = 4;
116 s->insn_read = adl_pci8164_insn_read;
117 s->insn_write = adl_pci8164_insn_write;
118 s->private = (void *)PCI8164_BUF1_REG;
119
120 return 0;
121 }
122
123 static struct comedi_driver adl_pci8164_driver = {
124 .driver_name = "adl_pci8164",
125 .module = THIS_MODULE,
126 .auto_attach = adl_pci8164_auto_attach,
127 .detach = comedi_pci_detach,
128 };
129
adl_pci8164_pci_probe(struct pci_dev * dev,const struct pci_device_id * id)130 static int adl_pci8164_pci_probe(struct pci_dev *dev,
131 const struct pci_device_id *id)
132 {
133 return comedi_pci_auto_config(dev, &adl_pci8164_driver,
134 id->driver_data);
135 }
136
137 static const struct pci_device_id adl_pci8164_pci_table[] = {
138 { PCI_DEVICE(PCI_VENDOR_ID_ADLINK, 0x8164) },
139 { 0 }
140 };
141 MODULE_DEVICE_TABLE(pci, adl_pci8164_pci_table);
142
143 static struct pci_driver adl_pci8164_pci_driver = {
144 .name = "adl_pci8164",
145 .id_table = adl_pci8164_pci_table,
146 .probe = adl_pci8164_pci_probe,
147 .remove = comedi_pci_auto_unconfig,
148 };
149 module_comedi_pci_driver(adl_pci8164_driver, adl_pci8164_pci_driver);
150
151 MODULE_AUTHOR("Comedi https://www.comedi.org");
152 MODULE_DESCRIPTION("Comedi low-level driver");
153 MODULE_LICENSE("GPL");
154