1 /*
2 * comedi/drivers/acl7225b.c
3 * Driver for Adlink NuDAQ ACL-7225b and clones
4 * José Luis Sánchez
5 */
6 /*
7 Driver: acl7225b
8 Description: Adlink NuDAQ ACL-7225b & compatibles
9 Author: José Luis Sánchez (jsanchezv@teleline.es)
10 Status: testing
11 Devices: [Adlink] ACL-7225b (acl7225b), [ICP] P16R16DIO (p16r16dio)
12 */
13
14 #include "../comedidev.h"
15
16 #include <linux/ioport.h>
17
18 #define ACL7225_SIZE 8 /* Requires 8 ioports, but only 4 are used */
19 #define P16R16DIO_SIZE 4
20 #define ACL7225_RIO_LO 0 /* Relays input/output low byte (R0-R7) */
21 #define ACL7225_RIO_HI 1 /* Relays input/output high byte (R8-R15) */
22 #define ACL7225_DI_LO 2 /* Digital input low byte (DI0-DI7) */
23 #define ACL7225_DI_HI 3 /* Digital input high byte (DI8-DI15) */
24
25 static int acl7225b_attach(struct comedi_device *dev,
26 struct comedi_devconfig *it);
27 static int acl7225b_detach(struct comedi_device *dev);
28
29 struct boardtype {
30 const char *name; /* driver name */
31 int io_range; /* len of I/O space */
32 };
33
34 static const struct boardtype boardtypes[] = {
35 {"acl7225b", ACL7225_SIZE,},
36 {"p16r16dio", P16R16DIO_SIZE,},
37 };
38
39 #define n_boardtypes (sizeof(boardtypes)/sizeof(struct boardtype))
40 #define this_board ((const struct boardtype *)dev->board_ptr)
41
42 static struct comedi_driver driver_acl7225b = {
43 .driver_name = "acl7225b",
44 .module = THIS_MODULE,
45 .attach = acl7225b_attach,
46 .detach = acl7225b_detach,
47 .board_name = &boardtypes[0].name,
48 .num_names = n_boardtypes,
49 .offset = sizeof(struct boardtype),
50 };
51
driver_acl7225b_init_module(void)52 static int __init driver_acl7225b_init_module(void)
53 {
54 return comedi_driver_register(&driver_acl7225b);
55 }
56
driver_acl7225b_cleanup_module(void)57 static void __exit driver_acl7225b_cleanup_module(void)
58 {
59 comedi_driver_unregister(&driver_acl7225b);
60 }
61
62 module_init(driver_acl7225b_init_module);
63 module_exit(driver_acl7225b_cleanup_module);
64
acl7225b_do_insn(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)65 static int acl7225b_do_insn(struct comedi_device *dev,
66 struct comedi_subdevice *s,
67 struct comedi_insn *insn, unsigned int *data)
68 {
69 if (insn->n != 2)
70 return -EINVAL;
71
72 if (data[0]) {
73 s->state &= ~data[0];
74 s->state |= (data[0] & data[1]);
75 }
76 if (data[0] & 0x00ff)
77 outb(s->state & 0xff, dev->iobase + (unsigned long)s->private);
78 if (data[0] & 0xff00)
79 outb((s->state >> 8),
80 dev->iobase + (unsigned long)s->private + 1);
81
82 data[1] = s->state;
83
84 return 2;
85 }
86
acl7225b_di_insn(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)87 static int acl7225b_di_insn(struct comedi_device *dev,
88 struct comedi_subdevice *s,
89 struct comedi_insn *insn, unsigned int *data)
90 {
91 if (insn->n != 2)
92 return -EINVAL;
93
94 data[1] = inb(dev->iobase + (unsigned long)s->private) |
95 (inb(dev->iobase + (unsigned long)s->private + 1) << 8);
96
97 return 2;
98 }
99
acl7225b_attach(struct comedi_device * dev,struct comedi_devconfig * it)100 static int acl7225b_attach(struct comedi_device *dev,
101 struct comedi_devconfig *it)
102 {
103 struct comedi_subdevice *s;
104 int iobase, iorange;
105
106 iobase = it->options[0];
107 iorange = this_board->io_range;
108 printk(KERN_INFO "comedi%d: acl7225b: board=%s 0x%04x\n", dev->minor,
109 this_board->name, iobase);
110 if (!request_region(iobase, iorange, "acl7225b")) {
111 printk(KERN_ERR "comedi%d: request_region failed - I/O port conflict\n",
112 dev->minor);
113 return -EIO;
114 }
115 dev->board_name = this_board->name;
116 dev->iobase = iobase;
117 dev->irq = 0;
118
119 if (alloc_subdevices(dev, 3) < 0)
120 return -ENOMEM;
121
122 s = dev->subdevices + 0;
123 /* Relays outputs */
124 s->type = COMEDI_SUBD_DO;
125 s->subdev_flags = SDF_WRITABLE;
126 s->maxdata = 1;
127 s->n_chan = 16;
128 s->insn_bits = acl7225b_do_insn;
129 s->range_table = &range_digital;
130 s->private = (void *)ACL7225_RIO_LO;
131
132 s = dev->subdevices + 1;
133 /* Relays status */
134 s->type = COMEDI_SUBD_DI;
135 s->subdev_flags = SDF_READABLE;
136 s->maxdata = 1;
137 s->n_chan = 16;
138 s->insn_bits = acl7225b_di_insn;
139 s->range_table = &range_digital;
140 s->private = (void *)ACL7225_RIO_LO;
141
142 s = dev->subdevices + 2;
143 /* Isolated digital inputs */
144 s->type = COMEDI_SUBD_DI;
145 s->subdev_flags = SDF_READABLE;
146 s->maxdata = 1;
147 s->n_chan = 16;
148 s->insn_bits = acl7225b_di_insn;
149 s->range_table = &range_digital;
150 s->private = (void *)ACL7225_DI_LO;
151
152 return 0;
153 }
154
acl7225b_detach(struct comedi_device * dev)155 static int acl7225b_detach(struct comedi_device *dev)
156 {
157 printk(KERN_INFO "comedi%d: acl7225b: remove\n", dev->minor);
158
159 if (dev->iobase)
160 release_region(dev->iobase, this_board->io_range);
161
162 return 0;
163 }
164
165 MODULE_AUTHOR("Comedi http://www.comedi.org");
166 MODULE_DESCRIPTION("Comedi low-level driver");
167 MODULE_LICENSE("GPL");
168