3 Anders Gnistrup <ex18@kalman.iau.dtu.dk>
9 Author: Anders Gnistrup <ex18@kalman.iau.dtu.dk>
10 Devices: [unknown] FL512 (fl512)
13 Digital I/O is not supported.
15 Configuration options:
16 [0] - I/O port base address
21 #include "../comedidev.h"
23 #include <linux/delay.h>
24 #include <linux/ioport.h>
26 #define FL512_SIZE 16 /* the size of the used memory */
27 struct fl512_private
{
32 #define devpriv ((struct fl512_private *) dev->private)
34 static const struct comedi_lrange range_fl512
= { 4, {
45 static int fl512_attach(struct comedi_device
*dev
, struct comedi_devconfig
*it
);
46 static int fl512_detach(struct comedi_device
*dev
);
48 static struct comedi_driver driver_fl512
= {
49 .driver_name
= "fl512",
50 .module
= THIS_MODULE
,
51 .attach
= fl512_attach
,
52 .detach
= fl512_detach
,
55 static int __init
driver_fl512_init_module(void)
57 return comedi_driver_register(&driver_fl512
);
60 static void __exit
driver_fl512_cleanup_module(void)
62 comedi_driver_unregister(&driver_fl512
);
65 module_init(driver_fl512_init_module
);
66 module_exit(driver_fl512_cleanup_module
);
68 static int fl512_ai_insn(struct comedi_device
*dev
,
69 struct comedi_subdevice
*s
, struct comedi_insn
*insn
,
71 static int fl512_ao_insn(struct comedi_device
*dev
, struct comedi_subdevice
*s
,
72 struct comedi_insn
*insn
, unsigned int *data
);
73 static int fl512_ao_insn_readback(struct comedi_device
*dev
,
74 struct comedi_subdevice
*s
,
75 struct comedi_insn
*insn
, unsigned int *data
);
78 * fl512_ai_insn : this is the analog input function
80 static int fl512_ai_insn(struct comedi_device
*dev
,
81 struct comedi_subdevice
*s
, struct comedi_insn
*insn
,
85 unsigned int lo_byte
, hi_byte
;
86 char chan
= CR_CHAN(insn
->chanspec
);
87 unsigned long iobase
= dev
->iobase
;
89 for (n
= 0; n
< insn
->n
; n
++) { /* sample n times on selected channel */
90 outb(chan
, iobase
+ 2); /* select chan */
91 outb(0, iobase
+ 3); /* start conversion */
92 udelay(30); /* sleep 30 usec */
93 lo_byte
= inb(iobase
+ 2); /* low 8 byte */
94 hi_byte
= inb(iobase
+ 3) & 0xf; /* high 4 bit and mask */
95 data
[n
] = lo_byte
+ (hi_byte
<< 8);
101 * fl512_ao_insn : used to write to a DA port n times
103 static int fl512_ao_insn(struct comedi_device
*dev
,
104 struct comedi_subdevice
*s
, struct comedi_insn
*insn
,
108 int chan
= CR_CHAN(insn
->chanspec
); /* get chan to write */
109 unsigned long iobase
= dev
->iobase
; /* get base address */
111 for (n
= 0; n
< insn
->n
; n
++) { /* write n data set */
113 outb(data
[n
] & 0x0ff, iobase
+ 4 + 2 * chan
);
114 /* write high byte */
115 outb((data
[n
] & 0xf00) >> 8, iobase
+ 4 + 2 * chan
);
116 inb(iobase
+ 4 + 2 * chan
); /* trig */
118 devpriv
->ao_readback
[chan
] = data
[n
];
124 * fl512_ao_insn_readback : used to read previous values written to
127 static int fl512_ao_insn_readback(struct comedi_device
*dev
,
128 struct comedi_subdevice
*s
,
129 struct comedi_insn
*insn
, unsigned int *data
)
132 int chan
= CR_CHAN(insn
->chanspec
);
134 for (n
= 0; n
< insn
->n
; n
++)
135 data
[n
] = devpriv
->ao_readback
[chan
];
143 static int fl512_attach(struct comedi_device
*dev
, struct comedi_devconfig
*it
)
145 unsigned long iobase
;
147 /* pointer to the subdevice: Analog in, Analog out,
148 (not made ->and Digital IO) */
149 struct comedi_subdevice
*s
;
151 iobase
= it
->options
[0];
152 printk(KERN_INFO
"comedi:%d fl512: 0x%04lx", dev
->minor
, iobase
);
153 if (!request_region(iobase
, FL512_SIZE
, "fl512")) {
154 printk(KERN_WARNING
" I/O port conflict\n");
157 dev
->iobase
= iobase
;
158 dev
->board_name
= "fl512";
159 if (alloc_private(dev
, sizeof(struct fl512_private
)) < 0)
163 printk(KERN_DEBUG
"malloc ok\n");
166 if (alloc_subdevices(dev
, 2) < 0)
170 * this if the definitions of the supdevices, 2 have been defined
173 s
= dev
->subdevices
+ 0;
174 /* define subdevice as Analog In */
175 s
->type
= COMEDI_SUBD_AI
;
176 /* you can read it from userspace */
177 s
->subdev_flags
= SDF_READABLE
| SDF_GROUND
;
178 /* Number of Analog input channels */
180 /* accept only 12 bits of data */
182 /* device use one of the ranges */
183 s
->range_table
= &range_fl512
;
184 /* function to call when read AD */
185 s
->insn_read
= fl512_ai_insn
;
186 printk(KERN_INFO
"comedi: fl512: subdevice 0 initialized\n");
189 s
= dev
->subdevices
+ 1;
190 /* define subdevice as Analog OUT */
191 s
->type
= COMEDI_SUBD_AO
;
192 /* you can write it from userspace */
193 s
->subdev_flags
= SDF_WRITABLE
;
194 /* Number of Analog output channels */
196 /* accept only 12 bits of data */
198 /* device use one of the ranges */
199 s
->range_table
= &range_fl512
;
200 /* function to call when write DA */
201 s
->insn_write
= fl512_ao_insn
;
202 /* function to call when reading DA */
203 s
->insn_read
= fl512_ao_insn_readback
;
204 printk(KERN_INFO
"comedi: fl512: subdevice 1 initialized\n");
209 static int fl512_detach(struct comedi_device
*dev
)
212 release_region(dev
->iobase
, FL512_SIZE
);
213 printk(KERN_INFO
"comedi%d: fl512: dummy i detach\n", dev
->minor
);
217 MODULE_AUTHOR("Comedi http://www.comedi.org");
218 MODULE_DESCRIPTION("Comedi low-level driver");
219 MODULE_LICENSE("GPL");