[deliverable/linux.git] / drivers / staging / comedi / drivers / rti800.c

/*
   comedi/drivers/rti800.c
   Hardware driver for Analog Devices RTI-800/815 board

   COMEDI - Linux Control and Measurement Device Interface
   Copyright (C) 1998 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.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

 */
/*
Driver: rti800
Description: Analog Devices RTI-800/815
Author: ds
Status: unknown
Updated: Fri, 05 Sep 2008 14:50:44 +0100
Devices: [Analog Devices] RTI-800 (rti800), RTI-815 (rti815)

Configuration options:
  [0] - I/O port base address
  [1] - IRQ
  [2] - A/D reference
	0 = differential
	1 = pseudodifferential (common)
	2 = single-ended
  [3] - A/D range
	0 = [-10,10]
	1 = [-5,5]
	2 = [0,10]
  [4] - A/D encoding
	0 = two's complement
	1 = straight binary
  [5] - DAC 0 range
	0 = [-10,10]
	1 = [0,10]
  [6] - DAC 0 encoding
	0 = two's complement
	1 = straight binary
  [7] - DAC 1 range (same as DAC 0)
  [8] - DAC 1 encoding (same as DAC 0)
*/

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

#include <linux/ioport.h>

#define RTI800_SIZE 16

#define RTI800_CSR 0
#define RTI800_MUXGAIN 1
#define RTI800_CONVERT 2
#define RTI800_ADCLO 3
#define RTI800_ADCHI 4
#define RTI800_DAC0LO 5
#define RTI800_DAC0HI 6
#define RTI800_DAC1LO 7
#define RTI800_DAC1HI 8
#define RTI800_CLRFLAGS 9
#define RTI800_DI 10
#define RTI800_DO 11
#define RTI800_9513A_DATA 12
#define RTI800_9513A_CNTRL 13
#define RTI800_9513A_STATUS 13

/*
 * flags for CSR register
 */

#define RTI800_BUSY		0x80
#define RTI800_DONE		0x40
#define RTI800_OVERRUN		0x20
#define RTI800_TCR		0x10
#define RTI800_DMA_ENAB		0x08
#define RTI800_INTR_TC		0x04
#define RTI800_INTR_EC		0x02
#define RTI800_INTR_OVRN	0x01

#define Am9513_8BITBUS

#define Am9513_output_control(a)	outb(a, dev->iobase+RTI800_9513A_CNTRL)
#define Am9513_output_data(a)		outb(a, dev->iobase+RTI800_9513A_DATA)
#define Am9513_input_data()		inb(dev->iobase+RTI800_9513A_DATA)
#define Am9513_input_status()		inb(dev->iobase+RTI800_9513A_STATUS)

#include "am9513.h"

static const struct comedi_lrange range_rti800_ai_10_bipolar = { 4, {
								     BIP_RANGE
								     (10),
								     BIP_RANGE
								     (1),
								     BIP_RANGE
								     (0.1),
								     BIP_RANGE
								     (0.02)
								     }
};

static const struct comedi_lrange range_rti800_ai_5_bipolar = { 4, {
								    BIP_RANGE
								    (5),
								    BIP_RANGE
								    (0.5),
								    BIP_RANGE
								    (0.05),
								    BIP_RANGE
								    (0.01)
								    }
};

static const struct comedi_lrange range_rti800_ai_unipolar = { 4, {
								   UNI_RANGE
								   (10),
								   UNI_RANGE(1),
								   UNI_RANGE
								   (0.1),
								   UNI_RANGE
								   (0.02)
								   }
};

struct rti800_board {

	const char *name;
	int has_ao;
};

static irqreturn_t rti800_interrupt(int irq, void *dev);

struct rti800_private {
	enum {
		adc_diff, adc_pseudodiff, adc_singleended
	} adc_mux;
	enum {
		adc_bipolar10, adc_bipolar5, adc_unipolar10
	} adc_range;
	enum {
		adc_2comp, adc_straight
	} adc_coding;
	enum {
		dac_bipolar10, dac_unipolar10
	} dac0_range, dac1_range;
	enum {
		dac_2comp, dac_straight
	} dac0_coding, dac1_coding;
	const struct comedi_lrange *ao_range_type_list[2];
	unsigned int ao_readback[2];
	int muxgain_bits;
};

#define devpriv ((struct rti800_private *)dev->private)

#define RTI800_TIMEOUT 100

static irqreturn_t rti800_interrupt(int irq, void *dev)
{
	return IRQ_HANDLED;
}

/* settling delay times in usec for different gains */
static const int gaindelay[] = { 10, 20, 40, 80 };

static int rti800_ai_insn_read(struct comedi_device *dev,
			       struct comedi_subdevice *s,
			       struct comedi_insn *insn, unsigned int *data)
{
	int i, t;
	int status;
	int chan = CR_CHAN(insn->chanspec);
	unsigned gain = CR_RANGE(insn->chanspec);
	unsigned muxgain_bits;

	inb(dev->iobase + RTI800_ADCHI);
	outb(0, dev->iobase + RTI800_CLRFLAGS);

	muxgain_bits = chan | (gain << 5);
	if (muxgain_bits != devpriv->muxgain_bits) {
		devpriv->muxgain_bits = muxgain_bits;
		outb(devpriv->muxgain_bits, dev->iobase + RTI800_MUXGAIN);
		/* without a delay here, the RTI_OVERRUN bit
		 * gets set, and you will have an error. */
		if (insn->n > 0) {
			BUG_ON(gain >= ARRAY_SIZE(gaindelay));
			udelay(gaindelay[gain]);
		}
	}

	for (i = 0; i < insn->n; i++) {
		outb(0, dev->iobase + RTI800_CONVERT);
		for (t = RTI800_TIMEOUT; t; t--) {
			status = inb(dev->iobase + RTI800_CSR);
			if (status & RTI800_OVERRUN) {
				printk(KERN_WARNING "rti800: a/d overrun\n");
				outb(0, dev->iobase + RTI800_CLRFLAGS);
				return -EIO;
			}
			if (status & RTI800_DONE)
				break;
			udelay(1);
		}
		if (t == 0) {
			printk(KERN_WARNING "rti800: timeout\n");
			return -ETIME;
		}
		data[i] = inb(dev->iobase + RTI800_ADCLO);
		data[i] |= (0xf & inb(dev->iobase + RTI800_ADCHI)) << 8;

		if (devpriv->adc_coding == adc_2comp)
			data[i] ^= 0x800;
	}

	return i;
}

static int rti800_ao_insn_read(struct comedi_device *dev,
			       struct comedi_subdevice *s,
			       struct comedi_insn *insn, unsigned int *data)
{
	int i;
	int chan = CR_CHAN(insn->chanspec);

	for (i = 0; i < insn->n; i++)
		data[i] = devpriv->ao_readback[chan];

	return i;
}

static int rti800_ao_insn_write(struct comedi_device *dev,
				struct comedi_subdevice *s,
				struct comedi_insn *insn, unsigned int *data)
{
	int chan = CR_CHAN(insn->chanspec);
	int d;
	int i;

	for (i = 0; i < insn->n; i++) {
		devpriv->ao_readback[chan] = d = data[i];
		if (devpriv->dac0_coding == dac_2comp)
			d ^= 0x800;

		outb(d & 0xff,
		     dev->iobase + (chan ? RTI800_DAC1LO : RTI800_DAC0LO));
		outb(d >> 8,
		     dev->iobase + (chan ? RTI800_DAC1HI : RTI800_DAC0HI));
	}
	return i;
}

static int rti800_di_insn_bits(struct comedi_device *dev,
			       struct comedi_subdevice *s,
			       struct comedi_insn *insn, unsigned int *data)
{
	data[1] = inb(dev->iobase + RTI800_DI);
	return insn->n;
}

static int rti800_do_insn_bits(struct comedi_device *dev,
			       struct comedi_subdevice *s,
			       struct comedi_insn *insn, unsigned int *data)
{
	if (data[0]) {
		s->state &= ~data[0];
		s->state |= data[0] & data[1];
		/* Outputs are inverted... */
		outb(s->state ^ 0xff, dev->iobase + RTI800_DO);
	}

	data[1] = s->state;

	return insn->n;
}

/*
   options[0] - I/O port
   options[1] - irq
   options[2] - a/d mux
	0=differential, 1=pseudodiff, 2=single
   options[3] - a/d range
	0=bipolar10, 1=bipolar5, 2=unipolar10
   options[4] - a/d coding
	0=2's comp, 1=straight binary
   options[5] - dac0 range
	0=bipolar10, 1=unipolar10
   options[6] - dac0 coding
	0=2's comp, 1=straight binary
   options[7] - dac1 range
   options[8] - dac1 coding
 */

static int rti800_attach(struct comedi_device *dev, struct comedi_devconfig *it)
{
	const struct rti800_board *board = comedi_board(dev);
	unsigned int irq;
	unsigned long iobase;
	int ret;
	struct comedi_subdevice *s;

	iobase = it->options[0];
	printk(KERN_INFO "comedi%d: rti800: 0x%04lx\n", dev->minor, iobase);
	if (!request_region(iobase, RTI800_SIZE, "rti800")) {
		printk(KERN_WARNING "I/O port conflict\n");
		return -EIO;
	}
	dev->iobase = iobase;

#ifdef DEBUG
	printk(KERN_DEBUG "fingerprint=%x,%x,%x,%x,%x ",
	       inb(dev->iobase + 0),
	       inb(dev->iobase + 1),
	       inb(dev->iobase + 2),
	       inb(dev->iobase + 3), inb(dev->iobase + 4));
#endif

	outb(0, dev->iobase + RTI800_CSR);
	inb(dev->iobase + RTI800_ADCHI);
	outb(0, dev->iobase + RTI800_CLRFLAGS);

	irq = it->options[1];
	if (irq) {
		printk(KERN_INFO "( irq = %u )\n", irq);
		ret = request_irq(irq, rti800_interrupt, 0, "rti800", dev);
		if (ret < 0) {
			printk(KERN_WARNING " Failed to allocate IRQ\n");
			return ret;
		}
		dev->irq = irq;
	} else {
		printk(KERN_INFO "( no irq )\n");
	}

	dev->board_name = board->name;

	ret = comedi_alloc_subdevices(dev, 4);
	if (ret)
		return ret;

	ret = alloc_private(dev, sizeof(struct rti800_private));
	if (ret < 0)
		return ret;

	devpriv->adc_mux = it->options[2];
	devpriv->adc_range = it->options[3];
	devpriv->adc_coding = it->options[4];
	devpriv->dac0_range = it->options[5];
	devpriv->dac0_coding = it->options[6];
	devpriv->dac1_range = it->options[7];
	devpriv->dac1_coding = it->options[8];
	devpriv->muxgain_bits = -1;

	s = &dev->subdevices[0];
	/* ai subdevice */
	s->type = COMEDI_SUBD_AI;
	s->subdev_flags = SDF_READABLE | SDF_GROUND;
	s->n_chan = (devpriv->adc_mux ? 16 : 8);
	s->insn_read = rti800_ai_insn_read;
	s->maxdata = 0xfff;
	switch (devpriv->adc_range) {
	case adc_bipolar10:
		s->range_table = &range_rti800_ai_10_bipolar;
		break;
	case adc_bipolar5:
		s->range_table = &range_rti800_ai_5_bipolar;
		break;
	case adc_unipolar10:
		s->range_table = &range_rti800_ai_unipolar;
		break;
	}

	s = &dev->subdevices[1];
	if (board->has_ao) {
		/* ao subdevice (only on rti815) */
		s->type = COMEDI_SUBD_AO;
		s->subdev_flags = SDF_WRITABLE;
		s->n_chan = 2;
		s->insn_read = rti800_ao_insn_read;
		s->insn_write = rti800_ao_insn_write;
		s->maxdata = 0xfff;
		s->range_table_list = devpriv->ao_range_type_list;
		switch (devpriv->dac0_range) {
		case dac_bipolar10:
			devpriv->ao_range_type_list[0] = &range_bipolar10;
			break;
		case dac_unipolar10:
			devpriv->ao_range_type_list[0] = &range_unipolar10;
			break;
		}
		switch (devpriv->dac1_range) {
		case dac_bipolar10:
			devpriv->ao_range_type_list[1] = &range_bipolar10;
			break;
		case dac_unipolar10:
			devpriv->ao_range_type_list[1] = &range_unipolar10;
			break;
		}
	} else {
		s->type = COMEDI_SUBD_UNUSED;
	}

	s = &dev->subdevices[2];
	/* di */
	s->type = COMEDI_SUBD_DI;
	s->subdev_flags = SDF_READABLE;
	s->n_chan = 8;
	s->insn_bits = rti800_di_insn_bits;
	s->maxdata = 1;
	s->range_table = &range_digital;

	s = &dev->subdevices[3];
	/* do */
	s->type = COMEDI_SUBD_DO;
	s->subdev_flags = SDF_WRITABLE;
	s->n_chan = 8;
	s->insn_bits = rti800_do_insn_bits;
	s->maxdata = 1;
	s->range_table = &range_digital;

/* don't yet know how to deal with counter/timers */
#if 0
	s = &dev->subdevices[4];
	/* do */
	s->type = COMEDI_SUBD_TIMER;
#endif

	return 0;
}

static void rti800_detach(struct comedi_device *dev)
{
	if (dev->iobase)
		release_region(dev->iobase, RTI800_SIZE);
	if (dev->irq)
		free_irq(dev->irq, dev);
}

static const struct rti800_board boardtypes[] = {
	{ "rti800", 0 },
	{ "rti815", 1 },
};

static struct comedi_driver rti800_driver = {
	.driver_name	= "rti800",
	.module		= THIS_MODULE,
	.attach		= rti800_attach,
	.detach		= rti800_detach,
	.num_names	= ARRAY_SIZE(boardtypes),
	.board_name	= &boardtypes[0].name,
	.offset		= sizeof(struct rti800_board),
};
module_comedi_driver(rti800_driver);

MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_DESCRIPTION("Comedi low-level driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
fc59905e DS	1	/*
	2	comedi/drivers/rti800.c
	3	Hardware driver for Analog Devices RTI-800/815 board
	4
	5	COMEDI - Linux Control and Measurement Device Interface
	6	Copyright (C) 1998 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
	18	You should have received a copy of the GNU General Public License
	19	along with this program; if not, write to the Free Software
	20	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	21
	22	*/
	23	/*
	24	Driver: rti800
	25	Description: Analog Devices RTI-800/815
	26	Author: ds
	27	Status: unknown
	28	Updated: Fri, 05 Sep 2008 14:50:44 +0100
	29	Devices: [Analog Devices] RTI-800 (rti800), RTI-815 (rti815)
	30
	31	Configuration options:
	32	[0] - I/O port base address
	33	[1] - IRQ
	34	[2] - A/D reference
79a22d5c BA	35	0 = differential
	36	1 = pseudodifferential (common)
	37	2 = single-ended
fc59905e	38	[3] - A/D range
79a22d5c BA	39	0 = [-10,10]
	40	1 = [-5,5]
	41	2 = [0,10]
fc59905e	42	[4] - A/D encoding
79a22d5c BA	43	0 = two's complement
79a22d5c BA	44	1 = straight binary
fc59905e	45	[5] - DAC 0 range
79a22d5c BA	46	0 = [-10,10]
79a22d5c BA	47	1 = [0,10]
fc59905e	48	[6] - DAC 0 encoding
79a22d5c BA	49	0 = two's complement
79a22d5c BA	50	1 = straight binary
fc59905e DS	51	[7] - DAC 1 range (same as DAC 0)
	52	[8] - DAC 1 encoding (same as DAC 0)
	53	*/
	54
25436dc9	55	#include <linux/interrupt.h>
fc59905e DS	56	#include "../comedidev.h"
	57
	58	#include <linux/ioport.h>
	59
	60	#define RTI800_SIZE 16
	61
	62	#define RTI800_CSR 0
	63	#define RTI800_MUXGAIN 1
	64	#define RTI800_CONVERT 2
	65	#define RTI800_ADCLO 3
	66	#define RTI800_ADCHI 4
	67	#define RTI800_DAC0LO 5
	68	#define RTI800_DAC0HI 6
	69	#define RTI800_DAC1LO 7
	70	#define RTI800_DAC1HI 8
	71	#define RTI800_CLRFLAGS 9
	72	#define RTI800_DI 10
	73	#define RTI800_DO 11
	74	#define RTI800_9513A_DATA 12
	75	#define RTI800_9513A_CNTRL 13
	76	#define RTI800_9513A_STATUS 13
	77
	78	/*
	79	* flags for CSR register
	80	*/
	81
	82	#define RTI800_BUSY 0x80
	83	#define RTI800_DONE 0x40
	84	#define RTI800_OVERRUN 0x20
	85	#define RTI800_TCR 0x10
	86	#define RTI800_DMA_ENAB 0x08
	87	#define RTI800_INTR_TC 0x04
	88	#define RTI800_INTR_EC 0x02
	89	#define RTI800_INTR_OVRN 0x01
	90
	91	#define Am9513_8BITBUS
	92
f7cbd7aa BP	93	#define Am9513_output_control(a) outb(a, dev->iobase+RTI800_9513A_CNTRL)
f7cbd7aa BP	94	#define Am9513_output_data(a) outb(a, dev->iobase+RTI800_9513A_DATA)
fc59905e DS	95	#define Am9513_input_data() inb(dev->iobase+RTI800_9513A_DATA)
	96	#define Am9513_input_status() inb(dev->iobase+RTI800_9513A_STATUS)
	97
	98	#include "am9513.h"
	99
9ced1de6	100	static const struct comedi_lrange range_rti800_ai_10_bipolar = { 4, {
0a85b6f0 MT	101	BIP_RANGE
	102	(10),
	103	BIP_RANGE
	104	(1),
	105	BIP_RANGE
	106	(0.1),
	107	BIP_RANGE
	108	(0.02)
	109	}
fc59905e	110	};
0a85b6f0	111
9ced1de6	112	static const struct comedi_lrange range_rti800_ai_5_bipolar = { 4, {
0a85b6f0 MT	113	BIP_RANGE
	114	(5),
	115	BIP_RANGE
	116	(0.5),
	117	BIP_RANGE
	118	(0.05),
	119	BIP_RANGE
	120	(0.01)
	121	}
fc59905e	122	};
0a85b6f0	123
9ced1de6	124	static const struct comedi_lrange range_rti800_ai_unipolar = { 4, {
0a85b6f0 MT	125	UNI_RANGE
	126	(10),
	127	UNI_RANGE(1),
	128	UNI_RANGE
	129	(0.1),
	130	UNI_RANGE
	131	(0.02)
	132	}
fc59905e DS	133	};
fc59905e DS	134
1de6a6fd BP	135	struct rti800_board {
1de6a6fd BP	136
fc59905e DS	137	const char *name;
fc59905e DS	138	int has_ao;
1de6a6fd BP	139	};
1de6a6fd BP	140
70265d24	141	static irqreturn_t rti800_interrupt(int irq, void *dev);
fc59905e	142
9335f261	143	struct rti800_private {
fc59905e DS	144	enum {
	145	adc_diff, adc_pseudodiff, adc_singleended
	146	} adc_mux;
	147	enum {
	148	adc_bipolar10, adc_bipolar5, adc_unipolar10
	149	} adc_range;
	150	enum {
	151	adc_2comp, adc_straight
	152	} adc_coding;
	153	enum {
	154	dac_bipolar10, dac_unipolar10
	155	} dac0_range, dac1_range;
	156	enum {
	157	dac_2comp, dac_straight
	158	} dac0_coding, dac1_coding;
9ced1de6	159	const struct comedi_lrange *ao_range_type_list[2];
790c5541	160	unsigned int ao_readback[2];
fc59905e	161	int muxgain_bits;
9335f261	162	};
fc59905e	163
9335f261	164	#define devpriv ((struct rti800_private *)dev->private)
fc59905e DS	165
	166	#define RTI800_TIMEOUT 100
	167
70265d24	168	static irqreturn_t rti800_interrupt(int irq, void *dev)
fc59905e DS	169	{
	170	return IRQ_HANDLED;
	171	}
	172
2696fb57	173	/* settling delay times in usec for different gains */
fc59905e DS	174	static const int gaindelay[] = { 10, 20, 40, 80 };
fc59905e DS	175
0a85b6f0 MT	176	static int rti800_ai_insn_read(struct comedi_device *dev,
	177	struct comedi_subdevice *s,
	178	struct comedi_insn insn, unsigned int data)
fc59905e DS	179	{
	180	int i, t;
	181	int status;
	182	int chan = CR_CHAN(insn->chanspec);
	183	unsigned gain = CR_RANGE(insn->chanspec);
	184	unsigned muxgain_bits;
	185
	186	inb(dev->iobase + RTI800_ADCHI);
	187	outb(0, dev->iobase + RTI800_CLRFLAGS);
	188
	189	muxgain_bits = chan \| (gain << 5);
	190	if (muxgain_bits != devpriv->muxgain_bits) {
	191	devpriv->muxgain_bits = muxgain_bits;
	192	outb(devpriv->muxgain_bits, dev->iobase + RTI800_MUXGAIN);
	193	/* without a delay here, the RTI_OVERRUN bit
	194	* gets set, and you will have an error. */
	195	if (insn->n > 0) {
8629efa4	196	BUG_ON(gain >= ARRAY_SIZE(gaindelay));
5f74ea14	197	udelay(gaindelay[gain]);
fc59905e DS	198	}
	199	}
	200
	201	for (i = 0; i < insn->n; i++) {
	202	outb(0, dev->iobase + RTI800_CONVERT);
	203	for (t = RTI800_TIMEOUT; t; t--) {
	204	status = inb(dev->iobase + RTI800_CSR);
	205	if (status & RTI800_OVERRUN) {
326bdc65	206	printk(KERN_WARNING "rti800: a/d overrun\n");
fc59905e DS	207	outb(0, dev->iobase + RTI800_CLRFLAGS);
	208	return -EIO;
	209	}
	210	if (status & RTI800_DONE)
	211	break;
5f74ea14	212	udelay(1);
fc59905e DS	213	}
fc59905e DS	214	if (t == 0) {
326bdc65	215	printk(KERN_WARNING "rti800: timeout\n");
fc59905e DS	216	return -ETIME;
	217	}
	218	data[i] = inb(dev->iobase + RTI800_ADCLO);
	219	data[i] \|= (0xf & inb(dev->iobase + RTI800_ADCHI)) << 8;
	220
79a22d5c	221	if (devpriv->adc_coding == adc_2comp)
fc59905e	222	data[i] ^= 0x800;
fc59905e DS	223	}
	224
	225	return i;
	226	}
	227
0a85b6f0 MT	228	static int rti800_ao_insn_read(struct comedi_device *dev,
	229	struct comedi_subdevice *s,
	230	struct comedi_insn insn, unsigned int data)
fc59905e DS	231	{
	232	int i;
	233	int chan = CR_CHAN(insn->chanspec);
	234
	235	for (i = 0; i < insn->n; i++)
	236	data[i] = devpriv->ao_readback[chan];
	237
	238	return i;
	239	}
	240
0a85b6f0 MT	241	static int rti800_ao_insn_write(struct comedi_device *dev,
	242	struct comedi_subdevice *s,
	243	struct comedi_insn insn, unsigned int data)
fc59905e DS	244	{
	245	int chan = CR_CHAN(insn->chanspec);
	246	int d;
	247	int i;
	248
	249	for (i = 0; i < insn->n; i++) {
	250	devpriv->ao_readback[chan] = d = data[i];
79a22d5c	251	if (devpriv->dac0_coding == dac_2comp)
fc59905e	252	d ^= 0x800;
79a22d5c	253
fc59905e	254	outb(d & 0xff,
0a85b6f0	255	dev->iobase + (chan ? RTI800_DAC1LO : RTI800_DAC0LO));
fc59905e	256	outb(d >> 8,
0a85b6f0	257	dev->iobase + (chan ? RTI800_DAC1HI : RTI800_DAC0HI));
fc59905e DS	258	}
	259	return i;
	260	}
	261
0a85b6f0 MT	262	static int rti800_di_insn_bits(struct comedi_device *dev,
	263	struct comedi_subdevice *s,
	264	struct comedi_insn insn, unsigned int data)
fc59905e	265	{
fc59905e	266	data[1] = inb(dev->iobase + RTI800_DI);
a2714e3e	267	return insn->n;
fc59905e DS	268	}
fc59905e DS	269
0a85b6f0 MT	270	static int rti800_do_insn_bits(struct comedi_device *dev,
	271	struct comedi_subdevice *s,
	272	struct comedi_insn insn, unsigned int data)
fc59905e	273	{
fc59905e DS	274	if (data[0]) {
	275	s->state &= ~data[0];
	276	s->state \|= data[0] & data[1];
	277	/* Outputs are inverted... */
	278	outb(s->state ^ 0xff, dev->iobase + RTI800_DO);
	279	}
	280
	281	data[1] = s->state;
	282
a2714e3e	283	return insn->n;
fc59905e DS	284	}
	285
	286	/*
	287	options[0] - I/O port
	288	options[1] - irq
	289	options[2] - a/d mux
79a22d5c	290	0=differential, 1=pseudodiff, 2=single
fc59905e	291	options[3] - a/d range
79a22d5c	292	0=bipolar10, 1=bipolar5, 2=unipolar10
fc59905e	293	options[4] - a/d coding
79a22d5c	294	0=2's comp, 1=straight binary
fc59905e	295	options[5] - dac0 range
79a22d5c	296	0=bipolar10, 1=unipolar10
fc59905e	297	options[6] - dac0 coding
79a22d5c	298	0=2's comp, 1=straight binary
fc59905e DS	299	options[7] - dac1 range
	300	options[8] - dac1 coding
	301	*/
	302
da91b269	303	static int rti800_attach(struct comedi_device dev, struct comedi_devconfig it)
fc59905e	304	{
354c00a6	305	const struct rti800_board *board = comedi_board(dev);
fc59905e DS	306	unsigned int irq;
	307	unsigned long iobase;
	308	int ret;
34c43922	309	struct comedi_subdevice *s;
fc59905e DS	310
fc59905e DS	311	iobase = it->options[0];
326bdc65	312	printk(KERN_INFO "comedi%d: rti800: 0x%04lx\n", dev->minor, iobase);
fc59905e	313	if (!request_region(iobase, RTI800_SIZE, "rti800")) {
326bdc65	314	printk(KERN_WARNING "I/O port conflict\n");
fc59905e DS	315	return -EIO;
	316	}
	317	dev->iobase = iobase;
	318
	319	#ifdef DEBUG
326bdc65	320	printk(KERN_DEBUG "fingerprint=%x,%x,%x,%x,%x ",
0a85b6f0 MT	321	inb(dev->iobase + 0),
	322	inb(dev->iobase + 1),
	323	inb(dev->iobase + 2),
	324	inb(dev->iobase + 3), inb(dev->iobase + 4));
fc59905e DS	325	#endif
	326
	327	outb(0, dev->iobase + RTI800_CSR);
	328	inb(dev->iobase + RTI800_ADCHI);
	329	outb(0, dev->iobase + RTI800_CLRFLAGS);
	330
	331	irq = it->options[1];
	332	if (irq) {
326bdc65	333	printk(KERN_INFO "( irq = %u )\n", irq);
5f74ea14	334	ret = request_irq(irq, rti800_interrupt, 0, "rti800", dev);
c3744138	335	if (ret < 0) {
326bdc65	336	printk(KERN_WARNING " Failed to allocate IRQ\n");
fc59905e DS	337	return ret;
	338	}
	339	dev->irq = irq;
	340	} else {
326bdc65	341	printk(KERN_INFO "( no irq )\n");
fc59905e DS	342	}
fc59905e DS	343
354c00a6	344	dev->board_name = board->name;
fc59905e	345
2f0b9d08	346	ret = comedi_alloc_subdevices(dev, 4);
8b6c5694	347	if (ret)
fc59905e	348	return ret;
c3744138 BP	349
	350	ret = alloc_private(dev, sizeof(struct rti800_private));
	351	if (ret < 0)
fc59905e DS	352	return ret;
	353
	354	devpriv->adc_mux = it->options[2];
	355	devpriv->adc_range = it->options[3];
	356	devpriv->adc_coding = it->options[4];
	357	devpriv->dac0_range = it->options[5];
	358	devpriv->dac0_coding = it->options[6];
	359	devpriv->dac1_range = it->options[7];
	360	devpriv->dac1_coding = it->options[8];
	361	devpriv->muxgain_bits = -1;
	362
13bee03e	363	s = &dev->subdevices[0];
fc59905e DS	364	/* ai subdevice */
	365	s->type = COMEDI_SUBD_AI;
	366	s->subdev_flags = SDF_READABLE \| SDF_GROUND;
	367	s->n_chan = (devpriv->adc_mux ? 16 : 8);
	368	s->insn_read = rti800_ai_insn_read;
	369	s->maxdata = 0xfff;
	370	switch (devpriv->adc_range) {
	371	case adc_bipolar10:
	372	s->range_table = &range_rti800_ai_10_bipolar;
	373	break;
	374	case adc_bipolar5:
	375	s->range_table = &range_rti800_ai_5_bipolar;
	376	break;
	377	case adc_unipolar10:
	378	s->range_table = &range_rti800_ai_unipolar;
	379	break;
	380	}
	381
13bee03e	382	s = &dev->subdevices[1];
354c00a6	383	if (board->has_ao) {
fc59905e DS	384	/* ao subdevice (only on rti815) */
	385	s->type = COMEDI_SUBD_AO;
	386	s->subdev_flags = SDF_WRITABLE;
	387	s->n_chan = 2;
	388	s->insn_read = rti800_ao_insn_read;
	389	s->insn_write = rti800_ao_insn_write;
	390	s->maxdata = 0xfff;
	391	s->range_table_list = devpriv->ao_range_type_list;
	392	switch (devpriv->dac0_range) {
	393	case dac_bipolar10:
	394	devpriv->ao_range_type_list[0] = &range_bipolar10;
	395	break;
	396	case dac_unipolar10:
	397	devpriv->ao_range_type_list[0] = &range_unipolar10;
	398	break;
	399	}
	400	switch (devpriv->dac1_range) {
	401	case dac_bipolar10:
	402	devpriv->ao_range_type_list[1] = &range_bipolar10;
	403	break;
	404	case dac_unipolar10:
	405	devpriv->ao_range_type_list[1] = &range_unipolar10;
	406	break;
	407	}
	408	} else {
	409	s->type = COMEDI_SUBD_UNUSED;
	410	}
	411
13bee03e	412	s = &dev->subdevices[2];
fc59905e DS	413	/* di */
	414	s->type = COMEDI_SUBD_DI;
	415	s->subdev_flags = SDF_READABLE;
	416	s->n_chan = 8;
	417	s->insn_bits = rti800_di_insn_bits;
	418	s->maxdata = 1;
	419	s->range_table = &range_digital;
	420
13bee03e	421	s = &dev->subdevices[3];
fc59905e DS	422	/* do */
	423	s->type = COMEDI_SUBD_DO;
	424	s->subdev_flags = SDF_WRITABLE;
	425	s->n_chan = 8;
	426	s->insn_bits = rti800_do_insn_bits;
	427	s->maxdata = 1;
	428	s->range_table = &range_digital;
	429
	430	/* don't yet know how to deal with counter/timers */
	431	#if 0
13bee03e	432	s = &dev->subdevices[4];
fc59905e DS	433	/* do */
	434	s->type = COMEDI_SUBD_TIMER;
	435	#endif
	436
fc59905e DS	437	return 0;
	438	}
	439
484ecc95	440	static void rti800_detach(struct comedi_device *dev)
fc59905e	441	{
fc59905e DS	442	if (dev->iobase)
fc59905e DS	443	release_region(dev->iobase, RTI800_SIZE);
fc59905e	444	if (dev->irq)
5f74ea14	445	free_irq(dev->irq, dev);
fc59905e	446	}
90f703d3	447
69d7c49e HS	448	static const struct rti800_board boardtypes[] = {
	449	{ "rti800", 0 },
	450	{ "rti815", 1 },
	451	};
	452
294f930d	453	static struct comedi_driver rti800_driver = {
69d7c49e HS	454	.driver_name = "rti800",
	455	.module = THIS_MODULE,
	456	.attach = rti800_attach,
	457	.detach = rti800_detach,
	458	.num_names = ARRAY_SIZE(boardtypes),
	459	.board_name = &boardtypes[0].name,
	460	.offset = sizeof(struct rti800_board),
	461	};
294f930d	462	module_comedi_driver(rti800_driver);
69d7c49e	463
90f703d3 AT	464	MODULE_AUTHOR("Comedi http://www.comedi.org");
	465	MODULE_DESCRIPTION("Comedi low-level driver");
	466	MODULE_LICENSE("GPL");