[linux-2.6-block.git] / drivers / staging / comedi / drivers / fl512.c

/*
 * fl512.c
 * Anders Gnistrup <ex18@kalman.iau.dtu.dk>
 *
 * COMEDI - Linux Control and Measurement Device Interface
 * Copyright (C) 2000 David A. Schleef <ds@schleef.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

/*
 * Driver: fl512
 * Description: unknown
 * Author: Anders Gnistrup <ex18@kalman.iau.dtu.dk>
 * Devices: [unknown] FL512 (fl512)
 * Status: unknown
 *
 * Digital I/O is not supported.
 *
 * Configuration options:
 *   [0] - I/O port base address
 */

#include <linux/module.h>
#include "../comedidev.h"

#include <linux/delay.h>

/*
 * Register I/O map
 */
#define FL512_AI_LSB_REG		0x02
#define FL512_AI_MSB_REG		0x03
#define FL512_AI_MUX_REG		0x02
#define FL512_AI_START_CONV_REG		0x03
#define FL512_AO_DATA_REG(x)		(0x04 + ((x) * 2))
#define FL512_AO_TRIG_REG(x)		(0x04 + ((x) * 2))

static const struct comedi_lrange range_fl512 = {
	4, {
		BIP_RANGE(0.5),
		BIP_RANGE(1),
		BIP_RANGE(5),
		BIP_RANGE(10),
		UNI_RANGE(1),
		UNI_RANGE(5),
		UNI_RANGE(10)
	}
};

static int fl512_ai_insn_read(struct comedi_device *dev,
			      struct comedi_subdevice *s,
			      struct comedi_insn *insn,
			      unsigned int *data)
{
	unsigned int chan = CR_CHAN(insn->chanspec);
	unsigned int val;
	int i;

	outb(chan, dev->iobase + FL512_AI_MUX_REG);

	for (i = 0; i < insn->n; i++) {
		outb(0, dev->iobase + FL512_AI_START_CONV_REG);

		/* XXX should test "done" flag instead of delay */
		udelay(30);

		val = inb(dev->iobase + FL512_AI_LSB_REG);
		val |= (inb(dev->iobase + FL512_AI_MSB_REG) << 8);
		val &= s->maxdata;

		data[i] = val;
	}

	return insn->n;
}

static int fl512_ao_insn_write(struct comedi_device *dev,
			       struct comedi_subdevice *s,
			       struct comedi_insn *insn,
			       unsigned int *data)
{
	unsigned int chan = CR_CHAN(insn->chanspec);
	unsigned int val = s->readback[chan];
	int i;

	for (i = 0; i < insn->n; i++) {
		val = data[i];

		/* write LSB, MSB then trigger conversion */
		outb(val & 0x0ff, dev->iobase + FL512_AO_DATA_REG(chan));
		outb((val >> 8) & 0xf, dev->iobase + FL512_AO_DATA_REG(chan));
		inb(dev->iobase + FL512_AO_TRIG_REG(chan));
	}
	s->readback[chan] = val;

	return insn->n;
}

static int fl512_attach(struct comedi_device *dev, struct comedi_devconfig *it)
{
	struct comedi_subdevice *s;
	int ret;

	ret = comedi_request_region(dev, it->options[0], 0x10);
	if (ret)
		return ret;

	ret = comedi_alloc_subdevices(dev, 2);
	if (ret)
		return ret;

	/* Analog Input subdevice */
	s = &dev->subdevices[0];
	s->type		= COMEDI_SUBD_AI;
	s->subdev_flags	= SDF_READABLE | SDF_GROUND;
	s->n_chan	= 16;
	s->maxdata	= 0x0fff;
	s->range_table	= &range_fl512;
	s->insn_read	= fl512_ai_insn_read;

	/* Analog Output subdevice */
	s = &dev->subdevices[1];
	s->type		= COMEDI_SUBD_AO;
	s->subdev_flags	= SDF_WRITABLE;
	s->n_chan	= 2;
	s->maxdata	= 0x0fff;
	s->range_table	= &range_fl512;
	s->insn_write	= fl512_ao_insn_write;

	ret = comedi_alloc_subdev_readback(s);
	if (ret)
		return ret;

	return 0;
}

static struct comedi_driver fl512_driver = {
	.driver_name	= "fl512",
	.module		= THIS_MODULE,
	.attach		= fl512_attach,
	.detach		= comedi_legacy_detach,
};
module_comedi_driver(fl512_driver);

MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_DESCRIPTION("Comedi low-level driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
9e27db79	1	/*
884c015f HS	2	* fl512.c
	3	* Anders Gnistrup <ex18@kalman.iau.dtu.dk>
	4	*
	5	* COMEDI - Linux Control and Measurement Device Interface
	6	* Copyright (C) 2000 David A. Schleef <ds@schleef.org>
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*/
9e27db79 AG	18
9e27db79 AG	19	/*
884c015f HS	20	* Driver: fl512
	21	* Description: unknown
	22	* Author: Anders Gnistrup <ex18@kalman.iau.dtu.dk>
	23	* Devices: [unknown] FL512 (fl512)
	24	* Status: unknown
	25	*
	26	* Digital I/O is not supported.
	27	*
	28	* Configuration options:
	29	* [0] - I/O port base address
	30	*/
9e27db79	31
ce157f80	32	#include <linux/module.h>
9e27db79 AG	33	#include "../comedidev.h"
	34
	35	#include <linux/delay.h>
9e27db79	36
96653ed6 HS	37	/*
	38	* Register I/O map
	39	*/
	40	#define FL512_AI_LSB_REG 0x02
	41	#define FL512_AI_MSB_REG 0x03
	42	#define FL512_AI_MUX_REG 0x02
	43	#define FL512_AI_START_CONV_REG 0x03
	44	#define FL512_AO_DATA_REG(x) (0x04 + ((x) * 2))
	45	#define FL512_AO_TRIG_REG(x) (0x04 + ((x) * 2))
	46
170341e4 HS	47	static const struct comedi_lrange range_fl512 = {
	48	4, {
	49	BIP_RANGE(0.5),
	50	BIP_RANGE(1),
	51	BIP_RANGE(5),
	52	BIP_RANGE(10),
	53	UNI_RANGE(1),
	54	UNI_RANGE(5),
	55	UNI_RANGE(10)
	56	}
9e27db79 AG	57	};
9e27db79 AG	58
6a083a68 HS	59	static int fl512_ai_insn_read(struct comedi_device *dev,
	60	struct comedi_subdevice *s,
	61	struct comedi_insn *insn,
	62	unsigned int *data)
9e27db79	63	{
6632d65e HS	64	unsigned int chan = CR_CHAN(insn->chanspec);
	65	unsigned int val;
	66	int i;
	67
	68	outb(chan, dev->iobase + FL512_AI_MUX_REG);
	69
	70	for (i = 0; i < insn->n; i++) {
96653ed6	71	outb(0, dev->iobase + FL512_AI_START_CONV_REG);
6632d65e	72
9e27db79	73	/* XXX should test "done" flag instead of delay */
6632d65e HS	74	udelay(30);
	75
	76	val = inb(dev->iobase + FL512_AI_LSB_REG);
	77	val \|= (inb(dev->iobase + FL512_AI_MSB_REG) << 8);
	78	val &= s->maxdata;
	79
	80	data[i] = val;
9e27db79	81	}
6632d65e HS	82
6632d65e HS	83	return insn->n;
9e27db79 AG	84	}
9e27db79 AG	85
6a083a68 HS	86	static int fl512_ao_insn_write(struct comedi_device *dev,
	87	struct comedi_subdevice *s,
	88	struct comedi_insn *insn,
	89	unsigned int *data)
9e27db79	90	{
3ecbbb56	91	unsigned int chan = CR_CHAN(insn->chanspec);
ec00fdc8	92	unsigned int val = s->readback[chan];
3ecbbb56 HS	93	int i;
	94
	95	for (i = 0; i < insn->n; i++) {
	96	val = data[i];
9e27db79	97
3ecbbb56 HS	98	/* write LSB, MSB then trigger conversion */
	99	outb(val & 0x0ff, dev->iobase + FL512_AO_DATA_REG(chan));
	100	outb((val >> 8) & 0xf, dev->iobase + FL512_AO_DATA_REG(chan));
	101	inb(dev->iobase + FL512_AO_TRIG_REG(chan));
9e27db79	102	}
ec00fdc8	103	s->readback[chan] = val;
9e27db79	104
18c4110e	105	return insn->n;
9e27db79 AG	106	}
9e27db79 AG	107
da91b269	108	static int fl512_attach(struct comedi_device dev, struct comedi_devconfig it)
9e27db79	109	{
27aa7320	110	struct comedi_subdevice *s;
efe4567c	111	int ret;
9e27db79	112
8f28c9d9	113	ret = comedi_request_region(dev, it->options[0], 0x10);
efe4567c HS	114	if (ret)
efe4567c HS	115	return ret;
9a1a6cf8	116
8b6c5694 HS	117	ret = comedi_alloc_subdevices(dev, 2);
	118	if (ret)
	119	return ret;
9e27db79	120
638622a2	121	/* Analog Input subdevice */
6fc01d32	122	s = &dev->subdevices[0];
638622a2 HS	123	s->type = COMEDI_SUBD_AI;
	124	s->subdev_flags = SDF_READABLE \| SDF_GROUND;
	125	s->n_chan = 16;
	126	s->maxdata = 0x0fff;
	127	s->range_table = &range_fl512;
6a083a68	128	s->insn_read = fl512_ai_insn_read;
638622a2 HS	129
638622a2 HS	130	/* Analog Output subdevice */
6fc01d32	131	s = &dev->subdevices[1];
638622a2 HS	132	s->type = COMEDI_SUBD_AO;
	133	s->subdev_flags = SDF_WRITABLE;
	134	s->n_chan = 2;
	135	s->maxdata = 0x0fff;
	136	s->range_table = &range_fl512;
6a083a68	137	s->insn_write = fl512_ao_insn_write;
ec00fdc8 HS	138
	139	ret = comedi_alloc_subdev_readback(s);
	140	if (ret)
	141	return ret;
9e27db79	142
fb780d21	143	return 0;
9e27db79 AG	144	}
9e27db79 AG	145
294f930d	146	static struct comedi_driver fl512_driver = {
a39eb906 HS	147	.driver_name = "fl512",
	148	.module = THIS_MODULE,
	149	.attach = fl512_attach,
21208519	150	.detach = comedi_legacy_detach,
a39eb906	151	};
294f930d	152	module_comedi_driver(fl512_driver);
a39eb906	153
90f703d3 AT	154	MODULE_AUTHOR("Comedi http://www.comedi.org");
	155	MODULE_DESCRIPTION("Comedi low-level driver");
	156	MODULE_LICENSE("GPL");