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

#define this_board ((const struct rti800_board *)dev->board_ptr)

static int rti800_attach(struct comedi_device *dev, struct comedi_devconfig *it);
static int rti800_detach(struct comedi_device *dev);
static struct comedi_driver driver_rti800 = {
	.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),
};

COMEDI_INITCLEANUP(driver_rti800);

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));
			comedi_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) {
				rt_printk("rti800: a/d overrun\n");
				outb(0, dev->iobase + RTI800_CLRFLAGS);
				return -EIO;
			}
			if (status & RTI800_DONE)
				break;
			comedi_udelay(1);
		}
		if (t == 0) {
			rt_printk("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)
{
	if (insn->n != 2)
		return -EINVAL;
	data[1] = inb(dev->iobase + RTI800_DI);
	return 2;
}

static int rti800_do_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s,
	struct comedi_insn *insn, unsigned int *data)
{
	if (insn->n != 2)
		return -EINVAL;

	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 2;
}

/*
   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)
{
	unsigned int irq;
	unsigned long iobase;
	int ret;
	struct comedi_subdevice *s;

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

#ifdef DEBUG
	printk("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("( irq = %u )", irq);
		ret = comedi_request_irq(irq, rti800_interrupt, 0,
					 "rti800", dev);
		if (ret < 0) {
			printk(" Failed to allocate IRQ\n");
			return ret;
		}
		dev->irq = irq;
	} else {
		printk("( no irq )");
	}

	dev->board_name = this_board->name;

	ret = alloc_subdevices(dev, 4);
	if (ret < 0)
		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++;
	if (this_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++;
	/* 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++;
	/* 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++;
	/* do */
	s->type = COMEDI_SUBD_TIMER;
#endif

	printk("\n");

	return 0;
}

static int rti800_detach(struct comedi_device *dev)
{
	printk("comedi%d: rti800: remove\n", dev->minor);

	if (dev->iobase)
		release_region(dev->iobase, RTI800_SIZE);

	if (dev->irq)
		comedi_free_irq(dev->irq, dev);

	return 0;
}
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
	35	0 = differential
	36	1 = pseudodifferential (common)
	37	2 = single-ended
	38	[3] - A/D range
	39	0 = [-10,10]
	40	1 = [-5,5]
	41	2 = [0,10]
	42	[4] - A/D encoding
	43	0 = two's complement
	44	1 = straight binary
	45	[5] - DAC 0 range
	46	0 = [-10,10]
	47	1 = [0,10]
	48	[6] - DAC 0 encoding
	49	0 = two's complement
	50	1 = straight binary
	51	[7] - DAC 1 range (same as DAC 0)
	52	[8] - DAC 1 encoding (same as DAC 0)
	53	*/
	54
	55	#include "../comedidev.h"
	56
	57	#include <linux/ioport.h>
	58
	59	#define RTI800_SIZE 16
	60
	61	#define RTI800_CSR 0
	62	#define RTI800_MUXGAIN 1
	63	#define RTI800_CONVERT 2
	64	#define RTI800_ADCLO 3
65	#define RTI800_ADCHI 4
66	#define RTI800_DAC0LO 5
67	#define RTI800_DAC0HI 6
68	#define RTI800_DAC1LO 7
69	#define RTI800_DAC1HI 8
70	#define RTI800_CLRFLAGS 9
71	#define RTI800_DI 10
72	#define RTI800_DO 11
73	#define RTI800_9513A_DATA 12
74	#define RTI800_9513A_CNTRL 13
75	#define RTI800_9513A_STATUS 13
76
77	/*
78	* flags for CSR register
79	*/
80
81	#define RTI800_BUSY 0x80
82	#define RTI800_DONE 0x40
83	#define RTI800_OVERRUN 0x20
84	#define RTI800_TCR 0x10
85	#define RTI800_DMA_ENAB 0x08
86	#define RTI800_INTR_TC 0x04
87	#define RTI800_INTR_EC 0x02
88	#define RTI800_INTR_OVRN 0x01
89
90	#define Am9513_8BITBUS
91
f7cbd7aa BP	92	#define Am9513_output_control(a) outb(a, dev->iobase+RTI800_9513A_CNTRL)
f7cbd7aa BP	93	#define Am9513_output_data(a) outb(a, dev->iobase+RTI800_9513A_DATA)
fc59905e DS	94	#define Am9513_input_data() inb(dev->iobase+RTI800_9513A_DATA)
	95	#define Am9513_input_status() inb(dev->iobase+RTI800_9513A_STATUS)
	96
	97	#include "am9513.h"
	98
9ced1de6	99	static const struct comedi_lrange range_rti800_ai_10_bipolar = { 4, {
fc59905e DS	100	BIP_RANGE(10),
	101	BIP_RANGE(1),
	102	BIP_RANGE(0.1),
	103	BIP_RANGE(0.02)
	104	}
	105	};
9ced1de6	106	static const struct comedi_lrange range_rti800_ai_5_bipolar = { 4, {
fc59905e DS	107	BIP_RANGE(5),
	108	BIP_RANGE(0.5),
	109	BIP_RANGE(0.05),
	110	BIP_RANGE(0.01)
	111	}
	112	};
9ced1de6	113	static const struct comedi_lrange range_rti800_ai_unipolar = { 4, {
fc59905e DS	114	UNI_RANGE(10),
	115	UNI_RANGE(1),
	116	UNI_RANGE(0.1),
	117	UNI_RANGE(0.02)
	118	}
	119	};
	120
1de6a6fd BP	121	struct rti800_board {
1de6a6fd BP	122
fc59905e DS	123	const char *name;
fc59905e DS	124	int has_ao;
1de6a6fd BP	125	};
	126
	127	static const struct rti800_board boardtypes[] = {
fc59905e DS	128	{"rti800", 0},
	129	{"rti815", 1},
	130	};
	131
1de6a6fd	132	#define this_board ((const struct rti800_board *)dev->board_ptr)
fc59905e	133
da91b269 BP	134	static int rti800_attach(struct comedi_device dev, struct comedi_devconfig it);
da91b269 BP	135	static int rti800_detach(struct comedi_device *dev);
139dfbdf	136	static struct comedi_driver driver_rti800 = {
68c3dbff BP	137	.driver_name = "rti800",
	138	.module = THIS_MODULE,
	139	.attach = rti800_attach,
	140	.detach = rti800_detach,
8629efa4	141	.num_names = ARRAY_SIZE(boardtypes),
68c3dbff BP	142	.board_name = &boardtypes[0].name,
68c3dbff BP	143	.offset = sizeof(struct rti800_board),
fc59905e DS	144	};
	145
	146	COMEDI_INITCLEANUP(driver_rti800);
	147
70265d24	148	static irqreturn_t rti800_interrupt(int irq, void *dev);
fc59905e	149
9335f261	150	struct rti800_private {
fc59905e DS	151	enum {
	152	adc_diff, adc_pseudodiff, adc_singleended
	153	} adc_mux;
	154	enum {
	155	adc_bipolar10, adc_bipolar5, adc_unipolar10
	156	} adc_range;
	157	enum {
	158	adc_2comp, adc_straight
	159	} adc_coding;
	160	enum {
	161	dac_bipolar10, dac_unipolar10
	162	} dac0_range, dac1_range;
	163	enum {
	164	dac_2comp, dac_straight
	165	} dac0_coding, dac1_coding;
9ced1de6	166	const struct comedi_lrange *ao_range_type_list[2];
790c5541	167	unsigned int ao_readback[2];
fc59905e	168	int muxgain_bits;
9335f261	169	};
fc59905e	170
9335f261	171	#define devpriv ((struct rti800_private *)dev->private)
fc59905e DS	172
	173	#define RTI800_TIMEOUT 100
	174
70265d24	175	static irqreturn_t rti800_interrupt(int irq, void *dev)
fc59905e DS	176	{
	177	return IRQ_HANDLED;
	178	}
	179
2696fb57	180	/* settling delay times in usec for different gains */
fc59905e DS	181	static const int gaindelay[] = { 10, 20, 40, 80 };
fc59905e DS	182
da91b269 BP	183	static int rti800_ai_insn_read(struct comedi_device dev, struct comedi_subdevice s,
da91b269 BP	184	struct comedi_insn insn, unsigned int data)
fc59905e DS	185	{
	186	int i, t;
	187	int status;
	188	int chan = CR_CHAN(insn->chanspec);
	189	unsigned gain = CR_RANGE(insn->chanspec);
	190	unsigned muxgain_bits;
	191
	192	inb(dev->iobase + RTI800_ADCHI);
	193	outb(0, dev->iobase + RTI800_CLRFLAGS);
	194
	195	muxgain_bits = chan \| (gain << 5);
	196	if (muxgain_bits != devpriv->muxgain_bits) {
	197	devpriv->muxgain_bits = muxgain_bits;
	198	outb(devpriv->muxgain_bits, dev->iobase + RTI800_MUXGAIN);
	199	/* without a delay here, the RTI_OVERRUN bit
	200	* gets set, and you will have an error. */
	201	if (insn->n > 0) {
8629efa4	202	BUG_ON(gain >= ARRAY_SIZE(gaindelay));
fc59905e DS	203	comedi_udelay(gaindelay[gain]);
	204	}
	205	}
	206
	207	for (i = 0; i < insn->n; i++) {
	208	outb(0, dev->iobase + RTI800_CONVERT);
	209	for (t = RTI800_TIMEOUT; t; t--) {
	210	status = inb(dev->iobase + RTI800_CSR);
	211	if (status & RTI800_OVERRUN) {
	212	rt_printk("rti800: a/d overrun\n");
	213	outb(0, dev->iobase + RTI800_CLRFLAGS);
	214	return -EIO;
	215	}
	216	if (status & RTI800_DONE)
	217	break;
	218	comedi_udelay(1);
	219	}
	220	if (t == 0) {
	221	rt_printk("rti800: timeout\n");
	222	return -ETIME;
	223	}
	224	data[i] = inb(dev->iobase + RTI800_ADCLO);
	225	data[i] \|= (0xf & inb(dev->iobase + RTI800_ADCHI)) << 8;
	226
	227	if (devpriv->adc_coding == adc_2comp) {
	228	data[i] ^= 0x800;
	229	}
	230	}
	231
	232	return i;
	233	}
	234
da91b269 BP	235	static int rti800_ao_insn_read(struct comedi_device dev, struct comedi_subdevice s,
da91b269 BP	236	struct comedi_insn insn, unsigned int data)
fc59905e DS	237	{
	238	int i;
	239	int chan = CR_CHAN(insn->chanspec);
	240
	241	for (i = 0; i < insn->n; i++)
	242	data[i] = devpriv->ao_readback[chan];
	243
	244	return i;
	245	}
	246
da91b269 BP	247	static int rti800_ao_insn_write(struct comedi_device dev, struct comedi_subdevice s,
da91b269 BP	248	struct comedi_insn insn, unsigned int data)
fc59905e DS	249	{
	250	int chan = CR_CHAN(insn->chanspec);
	251	int d;
	252	int i;
	253
	254	for (i = 0; i < insn->n; i++) {
	255	devpriv->ao_readback[chan] = d = data[i];
	256	if (devpriv->dac0_coding == dac_2comp) {
	257	d ^= 0x800;
	258	}
	259	outb(d & 0xff,
	260	dev->iobase + (chan ? RTI800_DAC1LO : RTI800_DAC0LO));
	261	outb(d >> 8,
	262	dev->iobase + (chan ? RTI800_DAC1HI : RTI800_DAC0HI));
	263	}
	264	return i;
	265	}
	266
da91b269 BP	267	static int rti800_di_insn_bits(struct comedi_device dev, struct comedi_subdevice s,
da91b269 BP	268	struct comedi_insn insn, unsigned int data)
fc59905e DS	269	{
	270	if (insn->n != 2)
	271	return -EINVAL;
	272	data[1] = inb(dev->iobase + RTI800_DI);
	273	return 2;
	274	}
	275
da91b269 BP	276	static int rti800_do_insn_bits(struct comedi_device dev, struct comedi_subdevice s,
da91b269 BP	277	struct comedi_insn insn, unsigned int data)
fc59905e DS	278	{
	279	if (insn->n != 2)
	280	return -EINVAL;
	281
	282	if (data[0]) {
	283	s->state &= ~data[0];
	284	s->state \|= data[0] & data[1];
	285	/* Outputs are inverted... */
	286	outb(s->state ^ 0xff, dev->iobase + RTI800_DO);
	287	}
	288
	289	data[1] = s->state;
	290
	291	return 2;
	292	}
	293
	294	/*
	295	options[0] - I/O port
	296	options[1] - irq
	297	options[2] - a/d mux
	298	0=differential, 1=pseudodiff, 2=single
	299	options[3] - a/d range
	300	0=bipolar10, 1=bipolar5, 2=unipolar10
	301	options[4] - a/d coding
	302	0=2's comp, 1=straight binary
	303	options[5] - dac0 range
	304	0=bipolar10, 1=unipolar10
	305	options[6] - dac0 coding
	306	0=2's comp, 1=straight binary
	307	options[7] - dac1 range
	308	options[8] - dac1 coding
	309	*/
	310
da91b269	311	static int rti800_attach(struct comedi_device dev, struct comedi_devconfig it)
fc59905e DS	312	{
	313	unsigned int irq;
	314	unsigned long iobase;
	315	int ret;
34c43922	316	struct comedi_subdevice *s;
fc59905e DS	317
	318	iobase = it->options[0];
	319	printk("comedi%d: rti800: 0x%04lx ", dev->minor, iobase);
	320	if (!request_region(iobase, RTI800_SIZE, "rti800")) {
	321	printk("I/O port conflict\n");
	322	return -EIO;
	323	}
	324	dev->iobase = iobase;
	325
	326	#ifdef DEBUG
	327	printk("fingerprint=%x,%x,%x,%x,%x ",
	328	inb(dev->iobase + 0),
	329	inb(dev->iobase + 1),
	330	inb(dev->iobase + 2),
	331	inb(dev->iobase + 3), inb(dev->iobase + 4));
	332	#endif
	333
	334	outb(0, dev->iobase + RTI800_CSR);
	335	inb(dev->iobase + RTI800_ADCHI);
	336	outb(0, dev->iobase + RTI800_CLRFLAGS);
	337
	338	irq = it->options[1];
	339	if (irq) {
	340	printk("( irq = %u )", irq);
c3744138 BP	341	ret = comedi_request_irq(irq, rti800_interrupt, 0,
	342	"rti800", dev);
	343	if (ret < 0) {
fc59905e DS	344	printk(" Failed to allocate IRQ\n");
	345	return ret;
	346	}
	347	dev->irq = irq;
	348	} else {
	349	printk("( no irq )");
	350	}
	351
	352	dev->board_name = this_board->name;
	353
c3744138 BP	354	ret = alloc_subdevices(dev, 4);
c3744138 BP	355	if (ret < 0)
fc59905e	356	return ret;
c3744138 BP	357
	358	ret = alloc_private(dev, sizeof(struct rti800_private));
	359	if (ret < 0)
fc59905e DS	360	return ret;
	361
	362	devpriv->adc_mux = it->options[2];
	363	devpriv->adc_range = it->options[3];
	364	devpriv->adc_coding = it->options[4];
	365	devpriv->dac0_range = it->options[5];
	366	devpriv->dac0_coding = it->options[6];
	367	devpriv->dac1_range = it->options[7];
	368	devpriv->dac1_coding = it->options[8];
	369	devpriv->muxgain_bits = -1;
	370
	371	s = dev->subdevices + 0;
	372	/* ai subdevice */
	373	s->type = COMEDI_SUBD_AI;
	374	s->subdev_flags = SDF_READABLE \| SDF_GROUND;
	375	s->n_chan = (devpriv->adc_mux ? 16 : 8);
	376	s->insn_read = rti800_ai_insn_read;
	377	s->maxdata = 0xfff;
	378	switch (devpriv->adc_range) {
	379	case adc_bipolar10:
	380	s->range_table = &range_rti800_ai_10_bipolar;
	381	break;
	382	case adc_bipolar5:
	383	s->range_table = &range_rti800_ai_5_bipolar;
	384	break;
	385	case adc_unipolar10:
	386	s->range_table = &range_rti800_ai_unipolar;
	387	break;
	388	}
	389
	390	s++;
	391	if (this_board->has_ao) {
	392	/* ao subdevice (only on rti815) */
	393	s->type = COMEDI_SUBD_AO;
	394	s->subdev_flags = SDF_WRITABLE;
	395	s->n_chan = 2;
	396	s->insn_read = rti800_ao_insn_read;
	397	s->insn_write = rti800_ao_insn_write;
	398	s->maxdata = 0xfff;
	399	s->range_table_list = devpriv->ao_range_type_list;
	400	switch (devpriv->dac0_range) {
	401	case dac_bipolar10:
	402	devpriv->ao_range_type_list[0] = &range_bipolar10;
	403	break;
	404	case dac_unipolar10:
	405	devpriv->ao_range_type_list[0] = &range_unipolar10;
	406	break;
	407	}
	408	switch (devpriv->dac1_range) {
	409	case dac_bipolar10:
	410	devpriv->ao_range_type_list[1] = &range_bipolar10;
	411	break;
	412	case dac_unipolar10:
	413	devpriv->ao_range_type_list[1] = &range_unipolar10;
	414	break;
	415	}
	416	} else {
	417	s->type = COMEDI_SUBD_UNUSED;
	418	}
	419
	420	s++;
	421	/* di */
	422	s->type = COMEDI_SUBD_DI;
	423	s->subdev_flags = SDF_READABLE;
424	s->n_chan = 8;
425	s->insn_bits = rti800_di_insn_bits;
426	s->maxdata = 1;
427	s->range_table = &range_digital;
428
429	s++;
430	/* do */
431	s->type = COMEDI_SUBD_DO;
432	s->subdev_flags = SDF_WRITABLE;
433	s->n_chan = 8;
434	s->insn_bits = rti800_do_insn_bits;
435	s->maxdata = 1;
436	s->range_table = &range_digital;
437
438	/* don't yet know how to deal with counter/timers */
439	#if 0
440	s++;
441	/* do */
442	s->type = COMEDI_SUBD_TIMER;
443	#endif
444
445	printk("\n");
446
447	return 0;
448	}
449
da91b269	450	static int rti800_detach(struct comedi_device *dev)
fc59905e DS	451	{
	452	printk("comedi%d: rti800: remove\n", dev->minor);
	453
	454	if (dev->iobase)
	455	release_region(dev->iobase, RTI800_SIZE);
	456
	457	if (dev->irq)
	458	comedi_free_irq(dev->irq, dev);
	459
	460	return 0;
	461	}