Commit | Line | Data |
---|---|---|
9e27db79 AG |
1 | /* |
2 | comedi/drivers/fl512.c | |
3 | Anders Gnistrup <ex18@kalman.iau.dtu.dk> | |
4 | */ | |
5 | ||
6 | /* | |
7 | Driver: fl512 | |
8 | Description: unknown | |
9 | Author: Anders Gnistrup <ex18@kalman.iau.dtu.dk> | |
10 | Devices: [unknown] FL512 (fl512) | |
11 | Status: unknown | |
12 | ||
13 | Digital I/O is not supported. | |
14 | ||
15 | Configuration options: | |
16 | [0] - I/O port base address | |
17 | */ | |
18 | ||
19 | #define DEBUG 0 | |
20 | ||
21 | #include "../comedidev.h" | |
22 | ||
23 | #include <linux/delay.h> | |
24 | #include <linux/ioport.h> | |
25 | ||
26 | #define FL512_SIZE 16 /* the size of the used memory */ | |
fa11f7a9 BP |
27 | struct fl512_private { |
28 | ||
790c5541 | 29 | short ao_readback[2]; |
fa11f7a9 BP |
30 | }; |
31 | ||
32 | #define devpriv ((struct fl512_private *) dev->private) | |
9e27db79 | 33 | |
9ced1de6 | 34 | static const struct comedi_lrange range_fl512 = { 4, { |
0a85b6f0 MT |
35 | BIP_RANGE(0.5), |
36 | BIP_RANGE(1), | |
37 | BIP_RANGE(5), | |
38 | BIP_RANGE(10), | |
39 | UNI_RANGE(1), | |
40 | UNI_RANGE(5), | |
41 | UNI_RANGE(10), | |
42 | } | |
9e27db79 AG |
43 | }; |
44 | ||
da91b269 BP |
45 | static int fl512_attach(struct comedi_device *dev, struct comedi_devconfig *it); |
46 | static int fl512_detach(struct comedi_device *dev); | |
9e27db79 | 47 | |
139dfbdf | 48 | static struct comedi_driver driver_fl512 = { |
68c3dbff BP |
49 | .driver_name = "fl512", |
50 | .module = THIS_MODULE, | |
51 | .attach = fl512_attach, | |
52 | .detach = fl512_detach, | |
9e27db79 AG |
53 | }; |
54 | ||
55 | COMEDI_INITCLEANUP(driver_fl512); | |
56 | ||
da91b269 | 57 | static int fl512_ai_insn(struct comedi_device *dev, |
0a85b6f0 MT |
58 | struct comedi_subdevice *s, struct comedi_insn *insn, |
59 | unsigned int *data); | |
60 | static int fl512_ao_insn(struct comedi_device *dev, struct comedi_subdevice *s, | |
61 | struct comedi_insn *insn, unsigned int *data); | |
da91b269 | 62 | static int fl512_ao_insn_readback(struct comedi_device *dev, |
0a85b6f0 MT |
63 | struct comedi_subdevice *s, |
64 | struct comedi_insn *insn, unsigned int *data); | |
9e27db79 AG |
65 | |
66 | /* | |
67 | * fl512_ai_insn : this is the analog input function | |
68 | */ | |
da91b269 | 69 | static int fl512_ai_insn(struct comedi_device *dev, |
0a85b6f0 MT |
70 | struct comedi_subdevice *s, struct comedi_insn *insn, |
71 | unsigned int *data) | |
9e27db79 AG |
72 | { |
73 | int n; | |
74 | unsigned int lo_byte, hi_byte; | |
75 | char chan = CR_CHAN(insn->chanspec); | |
76 | unsigned long iobase = dev->iobase; | |
77 | ||
78 | for (n = 0; n < insn->n; n++) { /* sample n times on selected channel */ | |
27aa7320 BA |
79 | /* XXX probably can move next step out of for() loop -- will |
80 | * make AI a little bit faster. */ | |
9e27db79 AG |
81 | outb(chan, iobase + 2); /* select chan */ |
82 | outb(0, iobase + 3); /* start conversion */ | |
83 | /* XXX should test "done" flag instead of delay */ | |
5f74ea14 | 84 | udelay(30); /* sleep 30 usec */ |
9e27db79 | 85 | lo_byte = inb(iobase + 2); /* low 8 byte */ |
27aa7320 | 86 | hi_byte = inb(iobase + 3) & 0xf; /* high 4 bit and mask */ |
9e27db79 AG |
87 | data[n] = lo_byte + (hi_byte << 8); |
88 | } | |
89 | return n; | |
90 | } | |
91 | ||
92 | /* | |
93 | * fl512_ao_insn : used to write to a DA port n times | |
94 | */ | |
da91b269 | 95 | static int fl512_ao_insn(struct comedi_device *dev, |
0a85b6f0 MT |
96 | struct comedi_subdevice *s, struct comedi_insn *insn, |
97 | unsigned int *data) | |
9e27db79 AG |
98 | { |
99 | int n; | |
100 | int chan = CR_CHAN(insn->chanspec); /* get chan to write */ | |
101 | unsigned long iobase = dev->iobase; /* get base address */ | |
102 | ||
103 | for (n = 0; n < insn->n; n++) { /* write n data set */ | |
27aa7320 BA |
104 | /* write low byte */ |
105 | outb(data[n] & 0x0ff, iobase + 4 + 2 * chan); | |
106 | /* write high byte */ | |
107 | outb((data[n] & 0xf00) >> 8, iobase + 4 + 2 * chan); | |
9e27db79 AG |
108 | inb(iobase + 4 + 2 * chan); /* trig */ |
109 | ||
110 | devpriv->ao_readback[chan] = data[n]; | |
111 | } | |
112 | return n; | |
113 | } | |
114 | ||
115 | /* | |
116 | * fl512_ao_insn_readback : used to read previous values written to | |
117 | * DA port | |
118 | */ | |
da91b269 | 119 | static int fl512_ao_insn_readback(struct comedi_device *dev, |
0a85b6f0 MT |
120 | struct comedi_subdevice *s, |
121 | struct comedi_insn *insn, unsigned int *data) | |
9e27db79 AG |
122 | { |
123 | int n; | |
124 | int chan = CR_CHAN(insn->chanspec); | |
125 | ||
27aa7320 | 126 | for (n = 0; n < insn->n; n++) |
9e27db79 | 127 | data[n] = devpriv->ao_readback[chan]; |
9e27db79 AG |
128 | |
129 | return n; | |
130 | } | |
131 | ||
132 | /* | |
133 | * start attach | |
134 | */ | |
da91b269 | 135 | static int fl512_attach(struct comedi_device *dev, struct comedi_devconfig *it) |
9e27db79 AG |
136 | { |
137 | unsigned long iobase; | |
27aa7320 BA |
138 | |
139 | /* pointer to the subdevice: Analog in, Analog out, | |
140 | (not made ->and Digital IO) */ | |
141 | struct comedi_subdevice *s; | |
9e27db79 AG |
142 | |
143 | iobase = it->options[0]; | |
27aa7320 | 144 | printk(KERN_INFO "comedi:%d fl512: 0x%04lx", dev->minor, iobase); |
9e27db79 | 145 | if (!request_region(iobase, FL512_SIZE, "fl512")) { |
27aa7320 | 146 | printk(KERN_WARNING " I/O port conflict\n"); |
9e27db79 AG |
147 | return -EIO; |
148 | } | |
149 | dev->iobase = iobase; | |
150 | dev->board_name = "fl512"; | |
fa11f7a9 | 151 | if (alloc_private(dev, sizeof(struct fl512_private)) < 0) |
9e27db79 AG |
152 | return -ENOMEM; |
153 | ||
154 | #if DEBUG | |
27aa7320 | 155 | printk(KERN_DEBUG "malloc ok\n"); |
9e27db79 AG |
156 | #endif |
157 | ||
158 | if (alloc_subdevices(dev, 2) < 0) | |
159 | return -ENOMEM; | |
160 | ||
161 | /* | |
162 | * this if the definitions of the supdevices, 2 have been defined | |
163 | */ | |
164 | /* Analog indput */ | |
165 | s = dev->subdevices + 0; | |
27aa7320 BA |
166 | /* define subdevice as Analog In */ |
167 | s->type = COMEDI_SUBD_AI; | |
168 | /* you can read it from userspace */ | |
169 | s->subdev_flags = SDF_READABLE | SDF_GROUND; | |
170 | /* Number of Analog input channels */ | |
171 | s->n_chan = 16; | |
172 | /* accept only 12 bits of data */ | |
173 | s->maxdata = 0x0fff; | |
174 | /* device use one of the ranges */ | |
175 | s->range_table = &range_fl512; | |
176 | /* function to call when read AD */ | |
177 | s->insn_read = fl512_ai_insn; | |
178 | printk(KERN_INFO "comedi: fl512: subdevice 0 initialized\n"); | |
9e27db79 AG |
179 | |
180 | /* Analog output */ | |
181 | s = dev->subdevices + 1; | |
27aa7320 BA |
182 | /* define subdevice as Analog OUT */ |
183 | s->type = COMEDI_SUBD_AO; | |
184 | /* you can write it from userspace */ | |
185 | s->subdev_flags = SDF_WRITABLE; | |
186 | /* Number of Analog output channels */ | |
187 | s->n_chan = 2; | |
188 | /* accept only 12 bits of data */ | |
189 | s->maxdata = 0x0fff; | |
190 | /* device use one of the ranges */ | |
191 | s->range_table = &range_fl512; | |
192 | /* function to call when write DA */ | |
193 | s->insn_write = fl512_ao_insn; | |
194 | /* function to call when reading DA */ | |
195 | s->insn_read = fl512_ao_insn_readback; | |
196 | printk(KERN_INFO "comedi: fl512: subdevice 1 initialized\n"); | |
9e27db79 AG |
197 | |
198 | return 1; | |
199 | } | |
200 | ||
da91b269 | 201 | static int fl512_detach(struct comedi_device *dev) |
9e27db79 AG |
202 | { |
203 | if (dev->iobase) | |
204 | release_region(dev->iobase, FL512_SIZE); | |
27aa7320 | 205 | printk(KERN_INFO "comedi%d: fl512: dummy i detach\n", dev->minor); |
9e27db79 AG |
206 | return 0; |
207 | } | |
90f703d3 AT |
208 | |
209 | MODULE_AUTHOR("Comedi http://www.comedi.org"); | |
210 | MODULE_DESCRIPTION("Comedi low-level driver"); | |
211 | MODULE_LICENSE("GPL"); |