1 /*
2 comedi/drivers/pcl724.c
3
4 Michal Dobes <dobes@tesnet.cz>
5
6 hardware driver for Advantech cards:
7 card: PCL-724, PCL-722, PCL-731
8 driver: pcl724, pcl722, pcl731
9 and ADLink cards:
10 card: ACL-7122, ACL-7124, PET-48DIO
11 driver: acl7122, acl7124, pet48dio
12
13 Options for PCL-724, PCL-731, ACL-7124 and PET-48DIO:
14 [0] - IO Base
15
16 Options for PCL-722 and ACL-7122:
17 [0] - IO Base
18 [1] - IRQ (0=disable IRQ) IRQ isn't supported at this time!
19 [2] -number of DIO:
20 0, 144: 144 DIO configuration
21 1, 96: 96 DIO configuration
22 */
23 /*
24 Driver: pcl724
25 Description: Advantech PCL-724, PCL-722, PCL-731 ADLink ACL-7122, ACL-7124,
26 PET-48DIO
27 Author: Michal Dobes <dobes@tesnet.cz>
28 Devices: [Advantech] PCL-724 (pcl724), PCL-722 (pcl722), PCL-731 (pcl731),
29 [ADLink] ACL-7122 (acl7122), ACL-7124 (acl7124), PET-48DIO (pet48dio)
30 Status: untested
31
32 This is driver for digital I/O boards PCL-722/724/731 with 144/24/48 DIO
33 and for digital I/O boards ACL-7122/7124/PET-48DIO with 144/24/48 DIO.
34 It need 8255.o for operations and only immediate mode is supported.
35 See the source for configuration details.
36 */
37 /*
38 * check_driver overrides:
39 * struct comedi_insn
40 */
41
42 #include "../comedidev.h"
43
44 #include <linux/ioport.h>
45 #include <linux/delay.h>
46
47 #include "8255.h"
48
49 #define PCL722_SIZE 32
50 #define PCL722_96_SIZE 16
51 #define PCL724_SIZE 4
52 #define PCL731_SIZE 8
53 #define PET48_SIZE 2
54
55 #define SIZE_8255 4
56
57 /* #define PCL724_IRQ 1 no IRQ support now */
58
59 static int pcl724_attach(struct comedi_device *dev, struct comedi_devconfig *it);
60 static int pcl724_detach(struct comedi_device *dev);
61
62 struct pcl724_board {
63
64 const char *name; /* board name */
65 int dio; /* num of DIO */
66 int numofports; /* num of 8255 subdevices */
67 unsigned int IRQbits; /* allowed interrupts */
68 unsigned int io_range; /* len of IO space */
69 char can_have96;
70 char is_pet48;
71 };
72
73
74 static const struct pcl724_board boardtypes[] = {
75 {"pcl724", 24, 1, 0x00fc, PCL724_SIZE, 0, 0,},
76 {"pcl722", 144, 6, 0x00fc, PCL722_SIZE, 1, 0,},
77 {"pcl731", 48, 2, 0x9cfc, PCL731_SIZE, 0, 0,},
78 {"acl7122", 144, 6, 0x9ee8, PCL722_SIZE, 1, 0,},
79 {"acl7124", 24, 1, 0x00fc, PCL724_SIZE, 0, 0,},
80 {"pet48dio", 48, 2, 0x9eb8, PET48_SIZE, 0, 1,},
81 };
82
83 #define n_boardtypes (sizeof(boardtypes)/sizeof(struct pcl724_board))
84 #define this_board ((const struct pcl724_board *)dev->board_ptr)
85
86 static struct comedi_driver driver_pcl724 = {
87 .driver_name = "pcl724",
88 .module = THIS_MODULE,
89 .attach = pcl724_attach,
90 .detach = pcl724_detach,
91 .board_name = &boardtypes[0].name,
92 .num_names = n_boardtypes,
93 .offset = sizeof(struct pcl724_board),
94 };
95
96 COMEDI_INITCLEANUP(driver_pcl724);
97
98 static int subdev_8255_cb(int dir, int port, int data, unsigned long arg)
99 {
100 unsigned long iobase = arg;
101
102 if (dir) {
103 outb(data, iobase + port);
104 return 0;
105 } else {
106 return inb(iobase + port);
107 }
108 }
109
110 static int subdev_8255mapped_cb(int dir, int port, int data,
111 unsigned long iobase)
112 {
113 int movport = SIZE_8255 * (iobase >> 12);
114
115 iobase &= 0x0fff;
116
117 if (dir) {
118 outb(port + movport, iobase);
119 outb(data, iobase + 1);
120 return 0;
121 } else {
122 outb(port + movport, iobase);
123 return inb(iobase + 1);
124 }
125 }
126
127 static int pcl724_attach(struct comedi_device *dev, struct comedi_devconfig *it)
128 {
129 unsigned long iobase;
130 unsigned int iorange;
131 int ret, i, n_subdevices;
132 #ifdef PCL724_IRQ
133 unsigned int irq;
134 #endif
135
136 iobase = it->options[0];
137 iorange = this_board->io_range;
138 if ((this_board->can_have96) && ((it->options[1] == 1)
139 || (it->options[1] == 96)))
140 iorange = PCL722_96_SIZE; /* PCL-724 in 96 DIO configuration */
141 printk("comedi%d: pcl724: board=%s, 0x%03lx ", dev->minor,
142 this_board->name, iobase);
143 if (!request_region(iobase, iorange, "pcl724")) {
144 printk("I/O port conflict\n");
145 return -EIO;
146 }
147
148 dev->iobase = iobase;
149
150 dev->board_name = this_board->name;
151
152 #ifdef PCL724_IRQ
153 irq = 0;
154 if (this_board->IRQbits != 0) { /* board support IRQ */
155 irq = it->options[1];
156 if (irq) { /* we want to use IRQ */
157 if (((1 << irq) & this_board->IRQbits) == 0) {
158 printk
159 (", IRQ %u is out of allowed range, DISABLING IT",
160 irq);
161 irq = 0; /* Bad IRQ */
162 } else {
163 if (request_irq(irq, interrupt_pcl724, 0, "pcl724", dev)) {
164 printk
165 (", unable to allocate IRQ %u, DISABLING IT",
166 irq);
167 irq = 0; /* Can't use IRQ */
168 } else {
169 printk(", irq=%u", irq);
170 }
171 }
172 }
173 }
174
175 dev->irq = irq;
176 #endif
177
178 printk("\n");
179
180 n_subdevices = this_board->numofports;
181 if ((this_board->can_have96) && ((it->options[1] == 1)
182 || (it->options[1] == 96)))
183 n_subdevices = 4; /* PCL-724 in 96 DIO configuration */
184
185 ret = alloc_subdevices(dev, n_subdevices);
186 if (ret < 0)
187 return ret;
188
189 for (i = 0; i < dev->n_subdevices; i++) {
190 if (this_board->is_pet48) {
191 subdev_8255_init(dev, dev->subdevices + i,
192 subdev_8255mapped_cb,
193 (unsigned long)(dev->iobase + i * 0x1000));
194 } else
195 subdev_8255_init(dev, dev->subdevices + i,
196 subdev_8255_cb,
197 (unsigned long)(dev->iobase + SIZE_8255 * i));
198 };
199
200 return 0;
201 }
202
203 static int pcl724_detach(struct comedi_device *dev)
204 {
205 int i;
206
207 /* printk("comedi%d: pcl724: remove\n",dev->minor); */
208
209 for (i = 0; i < dev->n_subdevices; i++) {
210 subdev_8255_cleanup(dev, dev->subdevices + i);
211 }
212
213 #ifdef PCL724_IRQ
214 if (dev->irq) {
215 free_irq(dev->irq, dev);
216 }
217 #endif
218
219 release_region(dev->iobase, this_board->io_range);
220
221 return 0;
222 }
223
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