[linux-2.6-block.git] / drivers / staging / comedi / drivers / cb_das16_cs.c

/*
    comedi/drivers/das16cs.c
    Driver for Computer Boards PC-CARD DAS16/16.

    COMEDI - Linux Control and Measurement Device Interface
    Copyright (C) 2000, 2001, 2002 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.

    PCMCIA support code for this driver is adapted from the dummy_cs.c
    driver of the Linux PCMCIA Card Services package.

    The initial developer of the original code is David A. Hinds
    <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
    are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.

*/
/*
Driver: cb_das16_cs
Description: Computer Boards PC-CARD DAS16/16
Devices: [ComputerBoards] PC-CARD DAS16/16 (cb_das16_cs), PC-CARD DAS16/16-AO
Author: ds
Updated: Mon, 04 Nov 2002 20:04:21 -0800
Status: experimental


*/

#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/delay.h>

#include "../comedidev.h"

#include <pcmcia/cistpl.h>
#include <pcmcia/ds.h>

#include "comedi_fc.h"
#include "8253.h"

#define DAS16CS_SIZE			18

#define DAS16CS_ADC_DATA		0
#define DAS16CS_DIO_MUX			2
#define DAS16CS_MISC1			4
#define DAS16CS_MISC2			6
#define DAS16CS_CTR0			8
#define DAS16CS_CTR1			10
#define DAS16CS_CTR2			12
#define DAS16CS_CTR_CONTROL		14
#define DAS16CS_DIO			16

struct das16cs_board {
	const char *name;
	int device_id;
	int n_ao_chans;
};

static const struct das16cs_board das16cs_boards[] = {
	{
		.name		= "PC-CARD DAS16/16-AO",
		.device_id	= 0x0039,
		.n_ao_chans	= 2,
	}, {
		.name		= "PCM-DAS16s/16",
		.device_id	= 0x4009,
		.n_ao_chans	= 0,
	}, {
		.name		= "PC-CARD DAS16/16",
		.device_id	= 0x0000,	/* unknown */
		.n_ao_chans	= 0,
	},
};

struct das16cs_private {
	unsigned int ao_readback[2];
	unsigned short status1;
	unsigned short status2;
};

static const struct comedi_lrange das16cs_ai_range = {
	4, {
		BIP_RANGE(10),
		BIP_RANGE(5),
		BIP_RANGE(2.5),
		BIP_RANGE(1.25),
	}
};

static irqreturn_t das16cs_interrupt(int irq, void *d)
{
	/* struct comedi_device *dev = d; */
	return IRQ_HANDLED;
}

static int das16cs_ai_rinsn(struct comedi_device *dev,
			    struct comedi_subdevice *s,
			    struct comedi_insn *insn, unsigned int *data)
{
	struct das16cs_private *devpriv = dev->private;
	int chan = CR_CHAN(insn->chanspec);
	int range = CR_RANGE(insn->chanspec);
	int aref = CR_AREF(insn->chanspec);
	int i;
	int to;

	outw(chan, dev->iobase + DAS16CS_DIO_MUX);

	devpriv->status1 &= ~0xf320;
	devpriv->status1 |= (aref == AREF_DIFF) ? 0 : 0x0020;
	outw(devpriv->status1, dev->iobase + DAS16CS_MISC1);

	devpriv->status2 &= ~0xff00;
	switch (range) {
	case 0:
		devpriv->status2 |= 0x800;
		break;
	case 1:
		devpriv->status2 |= 0x000;
		break;
	case 2:
		devpriv->status2 |= 0x100;
		break;
	case 3:
		devpriv->status2 |= 0x200;
		break;
	}
	outw(devpriv->status2, dev->iobase + DAS16CS_MISC2);

	for (i = 0; i < insn->n; i++) {
		outw(0, dev->iobase + DAS16CS_ADC_DATA);

#define TIMEOUT 1000
		for (to = 0; to < TIMEOUT; to++) {
			if (inw(dev->iobase + DAS16CS_MISC1) & 0x0080)
				break;
		}
		if (to == TIMEOUT) {
			dev_dbg(dev->class_dev, "cb_das16_cs: ai timeout\n");
			return -ETIME;
		}
		data[i] = inw(dev->iobase + DAS16CS_ADC_DATA);
	}

	return i;
}

static int das16cs_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
{
	return -EINVAL;
}

static int das16cs_ai_cmdtest(struct comedi_device *dev,
			      struct comedi_subdevice *s,
			      struct comedi_cmd *cmd)
{
	int err = 0;
	int tmp;

	/* Step 1 : check if triggers are trivially valid */

	err |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW);
	err |= cfc_check_trigger_src(&cmd->scan_begin_src,
					TRIG_TIMER | TRIG_EXT);
	err |= cfc_check_trigger_src(&cmd->convert_src,
					TRIG_TIMER | TRIG_EXT);
	err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
	err |= cfc_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);

	if (err)
		return 1;

	/* Step 2a : make sure trigger sources are unique */

	err |= cfc_check_trigger_is_unique(cmd->scan_begin_src);
	err |= cfc_check_trigger_is_unique(cmd->convert_src);
	err |= cfc_check_trigger_is_unique(cmd->stop_src);

	/* Step 2b : and mutually compatible */

	if (err)
		return 2;

	/* Step 3: check if arguments are trivially valid */

	err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0);

#define MAX_SPEED	10000	/* in nanoseconds */
#define MIN_SPEED	1000000000	/* in nanoseconds */

	if (cmd->scan_begin_src == TRIG_TIMER) {
		err |= cfc_check_trigger_arg_min(&cmd->scan_begin_arg,
						 MAX_SPEED);
		err |= cfc_check_trigger_arg_max(&cmd->scan_begin_arg,
						 MIN_SPEED);
	} else {
		/* external trigger */
		/* should be level/edge, hi/lo specification here */
		/* should specify multiple external triggers */
		err |= cfc_check_trigger_arg_max(&cmd->scan_begin_arg, 9);
	}
	if (cmd->convert_src == TRIG_TIMER) {
		err |= cfc_check_trigger_arg_min(&cmd->convert_arg,
						 MAX_SPEED);
		err |= cfc_check_trigger_arg_max(&cmd->convert_arg,
						 MIN_SPEED);
	} else {
		/* external trigger */
		/* see above */
		err |= cfc_check_trigger_arg_max(&cmd->convert_arg, 9);
	}

	err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len);

	if (cmd->stop_src == TRIG_COUNT)
		err |= cfc_check_trigger_arg_max(&cmd->stop_arg, 0x00ffffff);
	else	/* TRIG_NONE */
		err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0);

	if (err)
		return 3;

	/* step 4: fix up any arguments */

	if (cmd->scan_begin_src == TRIG_TIMER) {
		unsigned int div1 = 0, div2 = 0;

		tmp = cmd->scan_begin_arg;
		i8253_cascade_ns_to_timer(100, &div1, &div2,
					  &cmd->scan_begin_arg,
					  cmd->flags & TRIG_ROUND_MASK);
		if (tmp != cmd->scan_begin_arg)
			err++;
	}
	if (cmd->convert_src == TRIG_TIMER) {
		unsigned int div1 = 0, div2 = 0;

		tmp = cmd->convert_arg;
		i8253_cascade_ns_to_timer(100, &div1, &div2,
					  &cmd->scan_begin_arg,
					  cmd->flags & TRIG_ROUND_MASK);
		if (tmp != cmd->convert_arg)
			err++;
		if (cmd->scan_begin_src == TRIG_TIMER &&
		    cmd->scan_begin_arg <
		    cmd->convert_arg * cmd->scan_end_arg) {
			cmd->scan_begin_arg =
			    cmd->convert_arg * cmd->scan_end_arg;
			err++;
		}
	}

	if (err)
		return 4;

	return 0;
}

static int das16cs_ao_winsn(struct comedi_device *dev,
			    struct comedi_subdevice *s,
			    struct comedi_insn *insn, unsigned int *data)
{
	struct das16cs_private *devpriv = dev->private;
	int i;
	int chan = CR_CHAN(insn->chanspec);
	unsigned short status1;
	unsigned short d;
	int bit;

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

		outw(devpriv->status1, dev->iobase + DAS16CS_MISC1);
		udelay(1);

		status1 = devpriv->status1 & ~0xf;
		if (chan)
			status1 |= 0x0001;
		else
			status1 |= 0x0008;

		outw(status1, dev->iobase + DAS16CS_MISC1);
		udelay(1);

		for (bit = 15; bit >= 0; bit--) {
			int b = (d >> bit) & 0x1;
			b <<= 1;
			outw(status1 | b | 0x0000, dev->iobase + DAS16CS_MISC1);
			udelay(1);
			outw(status1 | b | 0x0004, dev->iobase + DAS16CS_MISC1);
			udelay(1);
		}
		/*
		 * Make both DAC0CS and DAC1CS high to load
		 * the new data and update analog the output
		 */
		outw(status1 | 0x9, dev->iobase + DAS16CS_MISC1);
	}

	return i;
}

static int das16cs_ao_rinsn(struct comedi_device *dev,
			    struct comedi_subdevice *s,
			    struct comedi_insn *insn, unsigned int *data)
{
	struct das16cs_private *devpriv = dev->private;
	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 das16cs_dio_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];

		outw(s->state, dev->iobase + DAS16CS_DIO);
	}

	data[1] = inw(dev->iobase + DAS16CS_DIO);

	return insn->n;
}

static int das16cs_dio_insn_config(struct comedi_device *dev,
				   struct comedi_subdevice *s,
				   struct comedi_insn *insn, unsigned int *data)
{
	struct das16cs_private *devpriv = dev->private;
	int chan = CR_CHAN(insn->chanspec);
	int bits;

	if (chan < 4)
		bits = 0x0f;
	else
		bits = 0xf0;

	switch (data[0]) {
	case INSN_CONFIG_DIO_OUTPUT:
		s->io_bits |= bits;
		break;
	case INSN_CONFIG_DIO_INPUT:
		s->io_bits &= bits;
		break;
	case INSN_CONFIG_DIO_QUERY:
		data[1] =
		    (s->io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT;
		return insn->n;
		break;
	default:
		return -EINVAL;
		break;
	}

	devpriv->status2 &= ~0x00c0;
	devpriv->status2 |= (s->io_bits & 0xf0) ? 0x0080 : 0;
	devpriv->status2 |= (s->io_bits & 0x0f) ? 0x0040 : 0;

	outw(devpriv->status2, dev->iobase + DAS16CS_MISC2);

	return insn->n;
}

static const void *das16cs_find_boardinfo(struct comedi_device *dev,
					  struct pcmcia_device *link)
{
	const struct das16cs_board *board;
	int i;

	for (i = 0; i < ARRAY_SIZE(das16cs_boards); i++) {
		board = &das16cs_boards[i];
		if (board->device_id == link->card_id)
			return board;
	}

	return NULL;
}

static int das16cs_auto_attach(struct comedi_device *dev,
			       unsigned long context)
{
	struct pcmcia_device *link = comedi_to_pcmcia_dev(dev);
	const struct das16cs_board *board;
	struct das16cs_private *devpriv;
	struct comedi_subdevice *s;
	int ret;

	board = das16cs_find_boardinfo(dev, link);
	if (!board)
		return -ENODEV;
	dev->board_ptr = board;
	dev->board_name = board->name;

	link->config_flags |= CONF_AUTO_SET_IO | CONF_ENABLE_IRQ;
	ret = comedi_pcmcia_enable(dev, NULL);
	if (ret)
		return ret;
	dev->iobase = link->resource[0]->start;

	link->priv = dev;
	ret = pcmcia_request_irq(link, das16cs_interrupt);
	if (ret)
		return ret;
	dev->irq = link->irq;

	devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL);
	if (!devpriv)
		return -ENOMEM;
	dev->private = devpriv;

	ret = comedi_alloc_subdevices(dev, 3);
	if (ret)
		return ret;

	s = &dev->subdevices[0];
	dev->read_subdev = s;
	/* analog input subdevice */
	s->type		= COMEDI_SUBD_AI;
	s->subdev_flags	= SDF_READABLE | SDF_GROUND | SDF_DIFF | SDF_CMD_READ;
	s->n_chan	= 16;
	s->maxdata	= 0xffff;
	s->range_table	= &das16cs_ai_range;
	s->len_chanlist	= 16;
	s->insn_read	= das16cs_ai_rinsn;
	s->do_cmd	= das16cs_ai_cmd;
	s->do_cmdtest	= das16cs_ai_cmdtest;

	s = &dev->subdevices[1];
	/* analog output subdevice */
	if (board->n_ao_chans) {
		s->type		= COMEDI_SUBD_AO;
		s->subdev_flags	= SDF_WRITABLE;
		s->n_chan	= board->n_ao_chans;
		s->maxdata	= 0xffff;
		s->range_table	= &range_bipolar10;
		s->insn_write	= &das16cs_ao_winsn;
		s->insn_read	= &das16cs_ao_rinsn;
	} else {
		s->type		= COMEDI_SUBD_UNUSED;
	}

	s = &dev->subdevices[2];
	/* digital i/o subdevice */
	s->type		= COMEDI_SUBD_DIO;
	s->subdev_flags	= SDF_READABLE | SDF_WRITABLE;
	s->n_chan	= 8;
	s->maxdata	= 1;
	s->range_table	= &range_digital;
	s->insn_bits	= das16cs_dio_insn_bits;
	s->insn_config	= das16cs_dio_insn_config;

	dev_info(dev->class_dev, "%s: %s, I/O base=0x%04lx, irq=%u\n",
		dev->driver->driver_name, dev->board_name,
		dev->iobase, dev->irq);

	return 0;
}

static struct comedi_driver driver_das16cs = {
	.driver_name	= "cb_das16_cs",
	.module		= THIS_MODULE,
	.auto_attach	= das16cs_auto_attach,
	.detach		= comedi_pcmcia_disable,
};

static int das16cs_pcmcia_attach(struct pcmcia_device *link)
{
	return comedi_pcmcia_auto_config(link, &driver_das16cs);
}

static const struct pcmcia_device_id das16cs_id_table[] = {
	PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x0039),
	PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x4009),
	PCMCIA_DEVICE_NULL
};
MODULE_DEVICE_TABLE(pcmcia, das16cs_id_table);

static struct pcmcia_driver das16cs_driver = {
	.name		= "cb_das16_cs",
	.owner		= THIS_MODULE,
	.id_table	= das16cs_id_table,
	.probe		= das16cs_pcmcia_attach,
	.remove		= comedi_pcmcia_auto_unconfig,
};
module_comedi_pcmcia_driver(driver_das16cs, das16cs_driver);

MODULE_AUTHOR("David A. Schleef <ds@schleef.org>");
MODULE_DESCRIPTION("Comedi driver for Computer Boards PC-CARD DAS16/16");
MODULE_LICENSE("GPL");
Commit	Line	Data
f0922ec5 DS	1	/*
	2	comedi/drivers/das16cs.c
	3	Driver for Computer Boards PC-CARD DAS16/16.
	4
	5	COMEDI - Linux Control and Measurement Device Interface
	6	Copyright (C) 2000, 2001, 2002 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
cd1a76fb HS	18	PCMCIA support code for this driver is adapted from the dummy_cs.c
cd1a76fb HS	19	driver of the Linux PCMCIA Card Services package.
1b19f53e HS	20
	21	The initial developer of the original code is David A. Hinds
	22	<dahinds@users.sourceforge.net>. Portions created by David A. Hinds
	23	are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
	24
f0922ec5 DS	25	*/
	26	/*
	27	Driver: cb_das16_cs
	28	Description: Computer Boards PC-CARD DAS16/16
	29	Devices: [ComputerBoards] PC-CARD DAS16/16 (cb_das16_cs), PC-CARD DAS16/16-AO
	30	Author: ds
	31	Updated: Mon, 04 Nov 2002 20:04:21 -0800
	32	Status: experimental
	33
	34
	35	*/
	36
25436dc9	37	#include <linux/interrupt.h>
5a0e3ad6	38	#include <linux/slab.h>
f0922ec5	39	#include <linux/delay.h>
f0922ec5	40
2bdaef1a HS	41	#include "../comedidev.h"
2bdaef1a HS	42
f0922ec5 DS	43	#include <pcmcia/cistpl.h>
	44	#include <pcmcia/ds.h>
	45
27020ffe	46	#include "comedi_fc.h"
f0922ec5 DS	47	#include "8253.h"
	48
	49	#define DAS16CS_SIZE 18
	50
	51	#define DAS16CS_ADC_DATA 0
	52	#define DAS16CS_DIO_MUX 2
	53	#define DAS16CS_MISC1 4
	54	#define DAS16CS_MISC2 6
	55	#define DAS16CS_CTR0 8
	56	#define DAS16CS_CTR1 10
	57	#define DAS16CS_CTR2 12
	58	#define DAS16CS_CTR_CONTROL 14
	59	#define DAS16CS_DIO 16
	60
3281a63d	61	struct das16cs_board {
f0922ec5 DS	62	const char *name;
	63	int device_id;
	64	int n_ao_chans;
3281a63d	65	};
13ab179c	66
3281a63d	67	static const struct das16cs_board das16cs_boards[] = {
f0922ec5	68	{
13ab179c HS	69	.name = "PC-CARD DAS16/16-AO",
	70	.device_id = 0x0039,
	71	.n_ao_chans = 2,
	72	}, {
	73	.name = "PCM-DAS16s/16",
	74	.device_id = 0x4009,
	75	.n_ao_chans = 0,
	76	}, {
	77	.name = "PC-CARD DAS16/16",
	78	.device_id = 0x0000, /* unknown */
	79	.n_ao_chans = 0,
	80	},
f0922ec5 DS	81	};
f0922ec5 DS	82
bfae362a	83	struct das16cs_private {
790c5541	84	unsigned int ao_readback[2];
f0922ec5 DS	85	unsigned short status1;
f0922ec5 DS	86	unsigned short status2;
bfae362a	87	};
f0922ec5	88
443bbedb HS	89	static const struct comedi_lrange das16cs_ai_range = {
	90	4, {
	91	BIP_RANGE(10),
	92	BIP_RANGE(5),
	93	BIP_RANGE(2.5),
	94	BIP_RANGE(1.25),
	95	}
f0922ec5 DS	96	};
f0922ec5 DS	97
70265d24	98	static irqreturn_t das16cs_interrupt(int irq, void *d)
f0922ec5	99	{
2696fb57	100	/* struct comedi_device dev = d; /
f0922ec5 DS	101	return IRQ_HANDLED;
	102	}
	103
0a85b6f0 MT	104	static int das16cs_ai_rinsn(struct comedi_device *dev,
	105	struct comedi_subdevice *s,
	106	struct comedi_insn insn, unsigned int data)
f0922ec5	107	{
16a8cdfc	108	struct das16cs_private *devpriv = dev->private;
e05b98b6 HS	109	int chan = CR_CHAN(insn->chanspec);
	110	int range = CR_RANGE(insn->chanspec);
	111	int aref = CR_AREF(insn->chanspec);
f0922ec5 DS	112	int i;
f0922ec5 DS	113	int to;
f0922ec5	114
ae1a4000	115	outw(chan, dev->iobase + DAS16CS_DIO_MUX);
f0922ec5 DS	116
	117	devpriv->status1 &= ~0xf320;
	118	devpriv->status1 \|= (aref == AREF_DIFF) ? 0 : 0x0020;
ae1a4000	119	outw(devpriv->status1, dev->iobase + DAS16CS_MISC1);
f0922ec5 DS	120
f0922ec5 DS	121	devpriv->status2 &= ~0xff00;
e05b98b6 HS	122	switch (range) {
	123	case 0:
	124	devpriv->status2 \|= 0x800;
	125	break;
	126	case 1:
	127	devpriv->status2 \|= 0x000;
	128	break;
	129	case 2:
	130	devpriv->status2 \|= 0x100;
	131	break;
	132	case 3:
	133	devpriv->status2 \|= 0x200;
	134	break;
e05b98b6	135	}
ae1a4000	136	outw(devpriv->status2, dev->iobase + DAS16CS_MISC2);
f0922ec5 DS	137
f0922ec5 DS	138	for (i = 0; i < insn->n; i++) {
ae1a4000	139	outw(0, dev->iobase + DAS16CS_ADC_DATA);
f0922ec5 DS	140
	141	#define TIMEOUT 1000
	142	for (to = 0; to < TIMEOUT; to++) {
ae1a4000	143	if (inw(dev->iobase + DAS16CS_MISC1) & 0x0080)
f0922ec5 DS	144	break;
	145	}
	146	if (to == TIMEOUT) {
f41ad667	147	dev_dbg(dev->class_dev, "cb_das16_cs: ai timeout\n");
f0922ec5 DS	148	return -ETIME;
f0922ec5 DS	149	}
ae1a4000	150	data[i] = inw(dev->iobase + DAS16CS_ADC_DATA);
f0922ec5 DS	151	}
	152
	153	return i;
	154	}
	155
da91b269	156	static int das16cs_ai_cmd(struct comedi_device dev, struct comedi_subdevice s)
f0922ec5 DS	157	{
	158	return -EINVAL;
	159	}
	160
0a85b6f0 MT	161	static int das16cs_ai_cmdtest(struct comedi_device *dev,
	162	struct comedi_subdevice *s,
	163	struct comedi_cmd *cmd)
f0922ec5 DS	164	{
	165	int err = 0;
	166	int tmp;
	167
27020ffe	168	/* Step 1 : check if triggers are trivially valid */
f0922ec5	169
27020ffe HS	170	err \|= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW);
	171	err \|= cfc_check_trigger_src(&cmd->scan_begin_src,
	172	TRIG_TIMER \| TRIG_EXT);
	173	err \|= cfc_check_trigger_src(&cmd->convert_src,
	174	TRIG_TIMER \| TRIG_EXT);
	175	err \|= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
	176	err \|= cfc_check_trigger_src(&cmd->stop_src, TRIG_COUNT \| TRIG_NONE);
f0922ec5 DS	177
	178	if (err)
	179	return 1;
	180
27020ffe	181	/* Step 2a : make sure trigger sources are unique */
f0922ec5	182
27020ffe HS	183	err \|= cfc_check_trigger_is_unique(cmd->scan_begin_src);
	184	err \|= cfc_check_trigger_is_unique(cmd->convert_src);
	185	err \|= cfc_check_trigger_is_unique(cmd->stop_src);
	186
	187	/* Step 2b : and mutually compatible */
f0922ec5 DS	188
	189	if (err)
	190	return 2;
	191
7d4adbe4 HS	192	/* Step 3: check if arguments are trivially valid */
	193
	194	err \|= cfc_check_trigger_arg_is(&cmd->start_arg, 0);
f0922ec5	195
f0922ec5 DS	196	#define MAX_SPEED 10000 /* in nanoseconds */
	197	#define MIN_SPEED 1000000000 /* in nanoseconds */
	198
	199	if (cmd->scan_begin_src == TRIG_TIMER) {
7d4adbe4 HS	200	err \|= cfc_check_trigger_arg_min(&cmd->scan_begin_arg,
	201	MAX_SPEED);
	202	err \|= cfc_check_trigger_arg_max(&cmd->scan_begin_arg,
	203	MIN_SPEED);
f0922ec5 DS	204	} else {
	205	/* external trigger */
	206	/* should be level/edge, hi/lo specification here */
	207	/* should specify multiple external triggers */
7d4adbe4	208	err \|= cfc_check_trigger_arg_max(&cmd->scan_begin_arg, 9);
f0922ec5 DS	209	}
f0922ec5 DS	210	if (cmd->convert_src == TRIG_TIMER) {
7d4adbe4 HS	211	err \|= cfc_check_trigger_arg_min(&cmd->convert_arg,
	212	MAX_SPEED);
	213	err \|= cfc_check_trigger_arg_max(&cmd->convert_arg,
	214	MIN_SPEED);
f0922ec5 DS	215	} else {
	216	/* external trigger */
	217	/* see above */
7d4adbe4	218	err \|= cfc_check_trigger_arg_max(&cmd->convert_arg, 9);
f0922ec5 DS	219	}
f0922ec5 DS	220
7d4adbe4 HS	221	err \|= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len);
	222
	223	if (cmd->stop_src == TRIG_COUNT)
	224	err \|= cfc_check_trigger_arg_max(&cmd->stop_arg, 0x00ffffff);
	225	else /* TRIG_NONE */
	226	err \|= cfc_check_trigger_arg_is(&cmd->stop_arg, 0);
f0922ec5 DS	227
	228	if (err)
	229	return 3;
	230
	231	/* step 4: fix up any arguments */
	232
	233	if (cmd->scan_begin_src == TRIG_TIMER) {
48b1aff5	234	unsigned int div1 = 0, div2 = 0;
f0922ec5 DS	235
	236	tmp = cmd->scan_begin_arg;
	237	i8253_cascade_ns_to_timer(100, &div1, &div2,
0a85b6f0 MT	238	&cmd->scan_begin_arg,
0a85b6f0 MT	239	cmd->flags & TRIG_ROUND_MASK);
f0922ec5 DS	240	if (tmp != cmd->scan_begin_arg)
	241	err++;
	242	}
	243	if (cmd->convert_src == TRIG_TIMER) {
48b1aff5	244	unsigned int div1 = 0, div2 = 0;
f0922ec5 DS	245
	246	tmp = cmd->convert_arg;
	247	i8253_cascade_ns_to_timer(100, &div1, &div2,
0a85b6f0 MT	248	&cmd->scan_begin_arg,
0a85b6f0 MT	249	cmd->flags & TRIG_ROUND_MASK);
f0922ec5 DS	250	if (tmp != cmd->convert_arg)
	251	err++;
	252	if (cmd->scan_begin_src == TRIG_TIMER &&
0a85b6f0 MT	253	cmd->scan_begin_arg <
0a85b6f0 MT	254	cmd->convert_arg * cmd->scan_end_arg) {
f0922ec5	255	cmd->scan_begin_arg =
0a85b6f0	256	cmd->convert_arg * cmd->scan_end_arg;
f0922ec5 DS	257	err++;
	258	}
	259	}
	260
	261	if (err)
	262	return 4;
	263
	264	return 0;
	265	}
	266
0a85b6f0 MT	267	static int das16cs_ao_winsn(struct comedi_device *dev,
	268	struct comedi_subdevice *s,
	269	struct comedi_insn insn, unsigned int data)
f0922ec5	270	{
16a8cdfc	271	struct das16cs_private *devpriv = dev->private;
f0922ec5 DS	272	int i;
	273	int chan = CR_CHAN(insn->chanspec);
	274	unsigned short status1;
	275	unsigned short d;
	276	int bit;
	277
	278	for (i = 0; i < insn->n; i++) {
	279	devpriv->ao_readback[chan] = data[i];
	280	d = data[i];
	281
ae1a4000	282	outw(devpriv->status1, dev->iobase + DAS16CS_MISC1);
5f74ea14	283	udelay(1);
f0922ec5 DS	284
	285	status1 = devpriv->status1 & ~0xf;
	286	if (chan)
	287	status1 \|= 0x0001;
	288	else
	289	status1 \|= 0x0008;
	290
ae1a4000	291	outw(status1, dev->iobase + DAS16CS_MISC1);
5f74ea14	292	udelay(1);
f0922ec5 DS	293
	294	for (bit = 15; bit >= 0; bit--) {
	295	int b = (d >> bit) & 0x1;
	296	b <<= 1;
ae1a4000	297	outw(status1 \| b \| 0x0000, dev->iobase + DAS16CS_MISC1);
5f74ea14	298	udelay(1);
ae1a4000	299	outw(status1 \| b \| 0x0004, dev->iobase + DAS16CS_MISC1);
5f74ea14	300	udelay(1);
f0922ec5	301	}
0a77678c HS	302	/*
	303	* Make both DAC0CS and DAC1CS high to load
	304	* the new data and update analog the output
	305	*/
ae1a4000	306	outw(status1 \| 0x9, dev->iobase + DAS16CS_MISC1);
f0922ec5 DS	307	}
	308
	309	return i;
	310	}
	311
0a85b6f0 MT	312	static int das16cs_ao_rinsn(struct comedi_device *dev,
	313	struct comedi_subdevice *s,
	314	struct comedi_insn insn, unsigned int data)
f0922ec5	315	{
16a8cdfc	316	struct das16cs_private *devpriv = dev->private;
f0922ec5 DS	317	int i;
	318	int chan = CR_CHAN(insn->chanspec);
	319
	320	for (i = 0; i < insn->n; i++)
	321	data[i] = devpriv->ao_readback[chan];
	322
	323	return i;
	324	}
	325
0a85b6f0 MT	326	static int das16cs_dio_insn_bits(struct comedi_device *dev,
	327	struct comedi_subdevice *s,
	328	struct comedi_insn insn, unsigned int data)
f0922ec5	329	{
f0922ec5 DS	330	if (data[0]) {
	331	s->state &= ~data[0];
	332	s->state \|= data[0] & data[1];
	333
ae1a4000	334	outw(s->state, dev->iobase + DAS16CS_DIO);
f0922ec5 DS	335	}
f0922ec5 DS	336
ae1a4000	337	data[1] = inw(dev->iobase + DAS16CS_DIO);
f0922ec5	338
a2714e3e	339	return insn->n;
f0922ec5 DS	340	}
f0922ec5 DS	341
0a85b6f0 MT	342	static int das16cs_dio_insn_config(struct comedi_device *dev,
	343	struct comedi_subdevice *s,
	344	struct comedi_insn insn, unsigned int data)
f0922ec5	345	{
16a8cdfc	346	struct das16cs_private *devpriv = dev->private;
f0922ec5 DS	347	int chan = CR_CHAN(insn->chanspec);
	348	int bits;
	349
	350	if (chan < 4)
	351	bits = 0x0f;
	352	else
	353	bits = 0xf0;
	354
	355	switch (data[0]) {
	356	case INSN_CONFIG_DIO_OUTPUT:
	357	s->io_bits \|= bits;
	358	break;
	359	case INSN_CONFIG_DIO_INPUT:
	360	s->io_bits &= bits;
	361	break;
	362	case INSN_CONFIG_DIO_QUERY:
	363	data[1] =
0a85b6f0	364	(s->io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT;
f0922ec5 DS	365	return insn->n;
	366	break;
	367	default:
	368	return -EINVAL;
	369	break;
	370	}
	371
	372	devpriv->status2 &= ~0x00c0;
	373	devpriv->status2 \|= (s->io_bits & 0xf0) ? 0x0080 : 0;
	374	devpriv->status2 \|= (s->io_bits & 0x0f) ? 0x0040 : 0;
	375
ae1a4000	376	outw(devpriv->status2, dev->iobase + DAS16CS_MISC2);
f0922ec5 DS	377
	378	return insn->n;
	379	}
	380
2bdaef1a HS	381	static const void das16cs_find_boardinfo(struct comedi_device dev,
2bdaef1a HS	382	struct pcmcia_device *link)
ae7df434	383	{
2bdaef1a	384	const struct das16cs_board *board;
ae7df434 HS	385	int i;
ae7df434 HS	386
1efc5d53	387	for (i = 0; i < ARRAY_SIZE(das16cs_boards); i++) {
2bdaef1a HS	388	board = &das16cs_boards[i];
	389	if (board->device_id == link->card_id)
	390	return board;
ae7df434 HS	391	}
ae7df434 HS	392
ae7df434 HS	393	return NULL;
	394	}
	395
2bdaef1a HS	396	static int das16cs_auto_attach(struct comedi_device *dev,
2bdaef1a HS	397	unsigned long context)
ae7df434	398	{
2bdaef1a HS	399	struct pcmcia_device *link = comedi_to_pcmcia_dev(dev);
2bdaef1a HS	400	const struct das16cs_board *board;
9a1a6cf8	401	struct das16cs_private *devpriv;
ae7df434 HS	402	struct comedi_subdevice *s;
ae7df434 HS	403	int ret;
ae7df434	404
2bdaef1a HS	405	board = das16cs_find_boardinfo(dev, link);
	406	if (!board)
	407	return -ENODEV;
	408	dev->board_ptr = board;
	409	dev->board_name = board->name;
ae7df434	410
9e29ce10	411	link->config_flags \|= CONF_AUTO_SET_IO \| CONF_ENABLE_IRQ;
a3ac9519	412	ret = comedi_pcmcia_enable(dev, NULL);
2bdaef1a HS	413	if (ret)
2bdaef1a HS	414	return ret;
9e29ce10	415	dev->iobase = link->resource[0]->start;
2bdaef1a	416
bcd22e8e HS	417	link->priv = dev;
	418	ret = pcmcia_request_irq(link, das16cs_interrupt);
	419	if (ret)
ae7df434	420	return ret;
ae7df434 HS	421	dev->irq = link->irq;
ae7df434 HS	422
c34fa261 HS	423	devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL);
	424	if (!devpriv)
	425	return -ENOMEM;
	426	dev->private = devpriv;
ae7df434	427
5c416ef3	428	ret = comedi_alloc_subdevices(dev, 3);
ae7df434 HS	429	if (ret)
	430	return ret;
	431
3d69288a	432	s = &dev->subdevices[0];
ae7df434 HS	433	dev->read_subdev = s;
ae7df434 HS	434	/* analog input subdevice */
cf2592d0 HS	435	s->type = COMEDI_SUBD_AI;
	436	s->subdev_flags = SDF_READABLE \| SDF_GROUND \| SDF_DIFF \| SDF_CMD_READ;
	437	s->n_chan = 16;
	438	s->maxdata = 0xffff;
	439	s->range_table = &das16cs_ai_range;
	440	s->len_chanlist = 16;
	441	s->insn_read = das16cs_ai_rinsn;
	442	s->do_cmd = das16cs_ai_cmd;
	443	s->do_cmdtest = das16cs_ai_cmdtest;
ae7df434	444
3d69288a	445	s = &dev->subdevices[1];
ae7df434	446	/* analog output subdevice */
2bdaef1a	447	if (board->n_ao_chans) {
cf2592d0 HS	448	s->type = COMEDI_SUBD_AO;
cf2592d0 HS	449	s->subdev_flags = SDF_WRITABLE;
2bdaef1a	450	s->n_chan = board->n_ao_chans;
cf2592d0 HS	451	s->maxdata = 0xffff;
	452	s->range_table = &range_bipolar10;
	453	s->insn_write = &das16cs_ao_winsn;
	454	s->insn_read = &das16cs_ao_rinsn;
da7fde2b	455	} else {
cf2592d0	456	s->type = COMEDI_SUBD_UNUSED;
ae7df434 HS	457	}
ae7df434 HS	458
3d69288a	459	s = &dev->subdevices[2];
ae7df434	460	/* digital i/o subdevice */
cf2592d0 HS	461	s->type = COMEDI_SUBD_DIO;
	462	s->subdev_flags = SDF_READABLE \| SDF_WRITABLE;
	463	s->n_chan = 8;
	464	s->maxdata = 1;
	465	s->range_table = &range_digital;
	466	s->insn_bits = das16cs_dio_insn_bits;
	467	s->insn_config = das16cs_dio_insn_config;
ae7df434	468
1fce3034 HS	469	dev_info(dev->class_dev, "%s: %s, I/O base=0x%04lx, irq=%u\n",
	470	dev->driver->driver_name, dev->board_name,
	471	dev->iobase, dev->irq);
	472
a659643a	473	return 0;
ae7df434 HS	474	}
ae7df434 HS	475
2f018267 HS	476	static struct comedi_driver driver_das16cs = {
	477	.driver_name = "cb_das16_cs",
	478	.module = THIS_MODULE,
2bdaef1a	479	.auto_attach = das16cs_auto_attach,
7fadd565	480	.detach = comedi_pcmcia_disable,
2f018267 HS	481	};
2f018267 HS	482
c2107ff4	483	static int das16cs_pcmcia_attach(struct pcmcia_device *link)
55a19b39	484	{
2bdaef1a	485	return comedi_pcmcia_auto_config(link, &driver_das16cs);
1b19f53e	486	}
f0922ec5	487
2202a5a7	488	static const struct pcmcia_device_id das16cs_id_table[] = {
f0922ec5 DS	489	PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x0039),
	490	PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x4009),
	491	PCMCIA_DEVICE_NULL
	492	};
f0922ec5 DS	493	MODULE_DEVICE_TABLE(pcmcia, das16cs_id_table);
f0922ec5 DS	494
e8bed9c6 HS	495	static struct pcmcia_driver das16cs_driver = {
	496	.name = "cb_das16_cs",
	497	.owner = THIS_MODULE,
e8bed9c6	498	.id_table = das16cs_id_table,
2bdaef1a HS	499	.probe = das16cs_pcmcia_attach,
2bdaef1a HS	500	.remove = comedi_pcmcia_auto_unconfig,
f0922ec5	501	};
66bf1ed6	502	module_comedi_pcmcia_driver(driver_das16cs, das16cs_driver);
16920671 HS	503
	504	MODULE_AUTHOR("David A. Schleef <ds@schleef.org>");
	505	MODULE_DESCRIPTION("Comedi driver for Computer Boards PC-CARD DAS16/16");
	506	MODULE_LICENSE("GPL");