Staging: comedi: add cb_das16_cs driver

Driver for Computer Boards PC-CARD DAS16/16 From: David Schleef <ds@schleef.org> Cc: Frank Mori Hess <fmhess@users.sourceforge.net> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2024-12-27 20:07:09 +00:00 · 2009-02-18 15:28:40 -08:00 · 2009-02-18 15:28:40 -08:00 · f0922ec52c
commit f0922ec52c
parent 70a350c348
1 changed files with 976 additions and 0 deletions
--- a/drivers/staging/comedi/drivers/cb_das16_cs.c
+++ b/drivers/staging/comedi/drivers/cb_das16_cs.c
@ -0,0 +1,976 @@
+/*
+    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.
+
+    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: 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 "../comedidev.h"
+#include <linux/delay.h>
+#include <linux/pci.h>
+
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ds.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
+
+typedef struct das16cs_board_struct {
+	const char *name;
+	int device_id;
+	int n_ao_chans;
+} das16cs_board;
+static const das16cs_board das16cs_boards[] = {
+	{
+	      device_id:0x0000,/* unknown */
+	      name:	"PC-CARD DAS16/16",
+	      n_ao_chans:0,
+		},
+	{
+	      device_id:0x0039,
+	      name:	"PC-CARD DAS16/16-AO",
+	      n_ao_chans:2,
+		},
+	{
+	      device_id:0x4009,
+	      name:	"PCM-DAS16s/16",
+	      n_ao_chans:0,
+		},
+};
+
+#define n_boards (sizeof(das16cs_boards)/sizeof(das16cs_boards[0]))
+#define thisboard ((const das16cs_board *)dev->board_ptr)
+
+typedef struct {
+	struct pcmcia_device *link;
+
+	lsampl_t ao_readback[2];
+	unsigned short status1;
+	unsigned short status2;
+} das16cs_private;
+#define devpriv ((das16cs_private *)dev->private)
+
+static int das16cs_attach(comedi_device * dev, comedi_devconfig * it);
+static int das16cs_detach(comedi_device * dev);
+static comedi_driver driver_das16cs = {
+      driver_name:"cb_das16_cs",
+      module:THIS_MODULE,
+      attach:das16cs_attach,
+      detach:das16cs_detach,
+};
+
+static struct pcmcia_device *cur_dev = NULL;
+
+static const comedi_lrange das16cs_ai_range = { 4, {
+			RANGE(-10, 10),
+			RANGE(-5, 5),
+			RANGE(-2.5, 2.5),
+			RANGE(-1.25, 1.25),
+	}
+};
+
+static irqreturn_t das16cs_interrupt(int irq, void *d PT_REGS_ARG);
+static int das16cs_ai_rinsn(comedi_device * dev, comedi_subdevice * s,
+	comedi_insn * insn, lsampl_t * data);
+static int das16cs_ai_cmd(comedi_device * dev, comedi_subdevice * s);
+static int das16cs_ai_cmdtest(comedi_device * dev, comedi_subdevice * s,
+	comedi_cmd * cmd);
+static int das16cs_ao_winsn(comedi_device * dev, comedi_subdevice * s,
+	comedi_insn * insn, lsampl_t * data);
+static int das16cs_ao_rinsn(comedi_device * dev, comedi_subdevice * s,
+	comedi_insn * insn, lsampl_t * data);
+static int das16cs_dio_insn_bits(comedi_device * dev, comedi_subdevice * s,
+	comedi_insn * insn, lsampl_t * data);
+static int das16cs_dio_insn_config(comedi_device * dev, comedi_subdevice * s,
+	comedi_insn * insn, lsampl_t * data);
+static int das16cs_timer_insn_read(comedi_device * dev, comedi_subdevice * s,
+	comedi_insn * insn, lsampl_t * data);
+static int das16cs_timer_insn_config(comedi_device * dev, comedi_subdevice * s,
+	comedi_insn * insn, lsampl_t * data);
+
+static int get_prodid(comedi_device * dev, struct pcmcia_device *link)
+{
+	tuple_t tuple;
+	u_short buf[128];
+	int prodid = 0;
+
+	tuple.TupleData = (cisdata_t *) buf;
+	tuple.TupleOffset = 0;
+	tuple.TupleDataMax = 255;
+	tuple.DesiredTuple = CISTPL_MANFID;
+	tuple.Attributes = TUPLE_RETURN_COMMON;
+	if ((pcmcia_get_first_tuple(link, &tuple) == 0) &&
+		(pcmcia_get_tuple_data(link, &tuple) == 0)) {
+		prodid = le16_to_cpu(buf[1]);
+	}
+
+	return prodid;
+}
+
+static const das16cs_board *das16cs_probe(comedi_device * dev,
+	struct pcmcia_device *link)
+{
+	int id;
+	int i;
+
+	id = get_prodid(dev, link);
+
+	for (i = 0; i < n_boards; i++) {
+		if (das16cs_boards[i].device_id == id) {
+			return das16cs_boards + i;
+		}
+	}
+
+	printk("unknown board!\n");
+
+	return NULL;
+}
+
+static int das16cs_attach(comedi_device * dev, comedi_devconfig * it)
+{
+	struct pcmcia_device *link;
+	comedi_subdevice *s;
+	int ret;
+	int i;
+
+	printk("comedi%d: cb_das16_cs: ", dev->minor);
+
+	link = cur_dev;		/* XXX hack */
+	if (!link)
+		return -EIO;
+
+	dev->iobase = link->io.BasePort1;
+	printk("I/O base=0x%04lx ", dev->iobase);
+
+	printk("fingerprint:\n");
+	for (i = 0; i < 48; i += 2) {
+		printk("%04x ", inw(dev->iobase + i));
+	}
+	printk("\n");
+
+	ret = comedi_request_irq(link->irq.AssignedIRQ, das16cs_interrupt,
+		IRQF_SHARED, "cb_das16_cs", dev);
+	if (ret < 0) {
+		return ret;
+	}
+	dev->irq = link->irq.AssignedIRQ;
+	printk("irq=%u ", dev->irq);
+
+	dev->board_ptr = das16cs_probe(dev, link);
+	if (!dev->board_ptr)
+		return -EIO;
+
+	dev->board_name = thisboard->name;
+
+	if (alloc_private(dev, sizeof(das16cs_private)) < 0)
+		return -ENOMEM;
+
+	if (alloc_subdevices(dev, 4) < 0)
+		return -ENOMEM;
+
+	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 (thisboard->n_ao_chans) {
+		s->type = COMEDI_SUBD_AO;
+		s->subdev_flags = SDF_WRITABLE;
+		s->n_chan = thisboard->n_ao_chans;
+		s->maxdata = 0xffff;
+		s->range_table = &range_bipolar10;
+		s->insn_write = &das16cs_ao_winsn;
+		s->insn_read = &das16cs_ao_rinsn;
+	}
+
+	s = dev->subdevices + 2;
+	/* digital i/o subdevice */
+	if (1) {
+		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;
+	} else {
+		s->type = COMEDI_SUBD_UNUSED;
+	}
+
+	s = dev->subdevices + 3;
+	/* timer subdevice */
+	if (0) {
+		s->type = COMEDI_SUBD_TIMER;
+		s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
+		s->n_chan = 1;
+		s->maxdata = 0xff;
+		s->range_table = &range_unknown;
+		s->insn_read = das16cs_timer_insn_read;
+		s->insn_config = das16cs_timer_insn_config;
+	} else {
+		s->type = COMEDI_SUBD_UNUSED;
+	}
+
+	printk("attached\n");
+
+	return 1;
+}
+
+static int das16cs_detach(comedi_device * dev)
+{
+	printk("comedi%d: das16cs: remove\n", dev->minor);
+
+	if (dev->irq) {
+		comedi_free_irq(dev->irq, dev);
+	}
+
+	return 0;
+}
+
+static irqreturn_t das16cs_interrupt(int irq, void *d PT_REGS_ARG)
+{
+	//comedi_device *dev = d;
+	return IRQ_HANDLED;
+}
+
+/*
+ * "instructions" read/write data in "one-shot" or "software-triggered"
+ * mode.
+ */
+static int das16cs_ai_rinsn(comedi_device * dev, comedi_subdevice * s,
+	comedi_insn * insn, lsampl_t * data)
+{
+	int i;
+	int to;
+	int aref;
+	int range;
+	int chan;
+	static int range_bits[] = { 0x800, 0x000, 0x100, 0x200 };
+
+	chan = CR_CHAN(insn->chanspec);
+	aref = CR_AREF(insn->chanspec);
+	range = CR_RANGE(insn->chanspec);
+
+	outw(chan, dev->iobase + 2);
+
+	devpriv->status1 &= ~0xf320;
+	devpriv->status1 |= (aref == AREF_DIFF) ? 0 : 0x0020;
+	outw(devpriv->status1, dev->iobase + 4);
+
+	devpriv->status2 &= ~0xff00;
+	devpriv->status2 |= range_bits[range];
+	outw(devpriv->status2, dev->iobase + 6);
+
+	for (i = 0; i < insn->n; i++) {
+		outw(0, dev->iobase);
+
+#define TIMEOUT 1000
+		for (to = 0; to < TIMEOUT; to++) {
+			if (inw(dev->iobase + 4) & 0x0080)
+				break;
+		}
+		if (to == TIMEOUT) {
+			printk("cb_das16_cs: ai timeout\n");
+			return -ETIME;
+		}
+		data[i] = (unsigned short)inw(dev->iobase + 0);
+	}
+
+	return i;
+}
+
+static int das16cs_ai_cmd(comedi_device * dev, comedi_subdevice * s)
+{
+	return -EINVAL;
+}
+
+static int das16cs_ai_cmdtest(comedi_device * dev, comedi_subdevice * s,
+	comedi_cmd * cmd)
+{
+	int err = 0;
+	int tmp;
+
+	/* cmdtest tests a particular command to see if it is valid.
+	 * Using the cmdtest ioctl, a user can create a valid cmd
+	 * and then have it executes by the cmd ioctl.
+	 *
+	 * cmdtest returns 1,2,3,4 or 0, depending on which tests
+	 * the command passes. */
+
+	/* step 1: make sure trigger sources are trivially valid */
+
+	tmp = cmd->start_src;
+	cmd->start_src &= TRIG_NOW;
+	if (!cmd->start_src || tmp != cmd->start_src)
+		err++;
+
+	tmp = cmd->scan_begin_src;
+	cmd->scan_begin_src &= TRIG_TIMER | TRIG_EXT;
+	if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src)
+		err++;
+
+	tmp = cmd->convert_src;
+	cmd->convert_src &= TRIG_TIMER | TRIG_EXT;
+	if (!cmd->convert_src || tmp != cmd->convert_src)
+		err++;
+
+	tmp = cmd->scan_end_src;
+	cmd->scan_end_src &= TRIG_COUNT;
+	if (!cmd->scan_end_src || tmp != cmd->scan_end_src)
+		err++;
+
+	tmp = cmd->stop_src;
+	cmd->stop_src &= TRIG_COUNT | TRIG_NONE;
+	if (!cmd->stop_src || tmp != cmd->stop_src)
+		err++;
+
+	if (err)
+		return 1;
+
+	/* step 2: make sure trigger sources are unique and mutually compatible */
+
+	/* note that mutual compatiblity is not an issue here */
+	if (cmd->scan_begin_src != TRIG_TIMER &&
+		cmd->scan_begin_src != TRIG_EXT)
+		err++;
+	if (cmd->convert_src != TRIG_TIMER && cmd->convert_src != TRIG_EXT)
+		err++;
+	if (cmd->stop_src != TRIG_COUNT && cmd->stop_src != TRIG_NONE)
+		err++;
+
+	if (err)
+		return 2;
+
+	/* step 3: make sure arguments are trivially compatible */
+
+	if (cmd->start_arg != 0) {
+		cmd->start_arg = 0;
+		err++;
+	}
+#define MAX_SPEED	10000	/* in nanoseconds */
+#define MIN_SPEED	1000000000	/* in nanoseconds */
+
+	if (cmd->scan_begin_src == TRIG_TIMER) {
+		if (cmd->scan_begin_arg < MAX_SPEED) {
+			cmd->scan_begin_arg = MAX_SPEED;
+			err++;
+		}
+		if (cmd->scan_begin_arg > MIN_SPEED) {
+			cmd->scan_begin_arg = MIN_SPEED;
+			err++;
+		}
+	} else {
+		/* external trigger */
+		/* should be level/edge, hi/lo specification here */
+		/* should specify multiple external triggers */
+		if (cmd->scan_begin_arg > 9) {
+			cmd->scan_begin_arg = 9;
+			err++;
+		}
+	}
+	if (cmd->convert_src == TRIG_TIMER) {
+		if (cmd->convert_arg < MAX_SPEED) {
+			cmd->convert_arg = MAX_SPEED;
+			err++;
+		}
+		if (cmd->convert_arg > MIN_SPEED) {
+			cmd->convert_arg = MIN_SPEED;
+			err++;
+		}
+	} else {
+		/* external trigger */
+		/* see above */
+		if (cmd->convert_arg > 9) {
+			cmd->convert_arg = 9;
+			err++;
+		}
+	}
+
+	if (cmd->scan_end_arg != cmd->chanlist_len) {
+		cmd->scan_end_arg = cmd->chanlist_len;
+		err++;
+	}
+	if (cmd->stop_src == TRIG_COUNT) {
+		if (cmd->stop_arg > 0x00ffffff) {
+			cmd->stop_arg = 0x00ffffff;
+			err++;
+		}
+	} else {
+		/* TRIG_NONE */
+		if (cmd->stop_arg != 0) {
+			cmd->stop_arg = 0;
+			err++;
+		}
+	}
+
+	if (err)
+		return 3;
+
+	/* step 4: fix up any arguments */
+
+	if (cmd->scan_begin_src == TRIG_TIMER) {
+		unsigned int div1, div2;
+
+		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, div2;
+
+		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(comedi_device * dev, comedi_subdevice * s,
+	comedi_insn * insn, lsampl_t * data)
+{
+	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 + 4);
+		comedi_udelay(1);
+
+		status1 = devpriv->status1 & ~0xf;
+		if (chan)
+			status1 |= 0x0001;
+		else
+			status1 |= 0x0008;
+
+/* 		printk("0x%04x\n",status1);*/
+		outw(status1, dev->iobase + 4);
+		comedi_udelay(1);
+
+		for (bit = 15; bit >= 0; bit--) {
+			int b = (d >> bit) & 0x1;
+			b <<= 1;
+/*			printk("0x%04x\n",status1 | b | 0x0000);*/
+			outw(status1 | b | 0x0000, dev->iobase + 4);
+			comedi_udelay(1);
+/*			printk("0x%04x\n",status1 | b | 0x0004);*/
+			outw(status1 | b | 0x0004, dev->iobase + 4);
+			comedi_udelay(1);
+		}
+/*		make high both DAC0CS and DAC1CS to load
+		new data and update analog output*/
+		outw(status1 | 0x9, dev->iobase + 4);
+	}
+
+	return i;
+}
+
+/* AO subdevices should have a read insn as well as a write insn.
+ * Usually this means copying a value stored in devpriv. */
+static int das16cs_ao_rinsn(comedi_device * dev, comedi_subdevice * s,
+	comedi_insn * insn, lsampl_t * data)
+{
+	int i;
+	int chan = CR_CHAN(insn->chanspec);
+
+	for (i = 0; i < insn->n; i++)
+		data[i] = devpriv->ao_readback[chan];
+
+	return i;
+}
+
+/* DIO devices are slightly special.  Although it is possible to
+ * implement the insn_read/insn_write interface, it is much more
+ * useful to applications if you implement the insn_bits interface.
+ * This allows packed reading/writing of the DIO channels.  The
+ * comedi core can convert between insn_bits and insn_read/write */
+static int das16cs_dio_insn_bits(comedi_device * dev, comedi_subdevice * s,
+	comedi_insn * insn, lsampl_t * data)
+{
+	if (insn->n != 2)
+		return -EINVAL;
+
+	if (data[0]) {
+		s->state &= ~data[0];
+		s->state |= data[0] & data[1];
+
+		outw(s->state, dev->iobase + 16);
+	}
+
+	/* on return, data[1] contains the value of the digital
+	 * input and output lines. */
+	data[1] = inw(dev->iobase + 16);
+
+	return 2;
+}
+
+static int das16cs_dio_insn_config(comedi_device * dev, comedi_subdevice * s,
+	comedi_insn * insn, lsampl_t * data)
+{
+	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 + 6);
+
+	return insn->n;
+}
+
+static int das16cs_timer_insn_read(comedi_device * dev, comedi_subdevice * s,
+	comedi_insn * insn, lsampl_t * data)
+{
+	return -EINVAL;
+}
+
+static int das16cs_timer_insn_config(comedi_device * dev, comedi_subdevice * s,
+	comedi_insn * insn, lsampl_t * data)
+{
+	return -EINVAL;
+}
+
+/* PCMCIA stuff */
+
+/*======================================================================
+
+    The following pcmcia code for the pcm-das08 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.
+
+======================================================================*/
+
+/*
+   All the PCMCIA modules use PCMCIA_DEBUG to control debugging.  If
+   you do not define PCMCIA_DEBUG at all, all the debug code will be
+   left out.  If you compile with PCMCIA_DEBUG=0, the debug code will
+   be present but disabled -- but it can then be enabled for specific
+   modules at load time with a 'pc_debug=#' option to insmod.
+*/
+#if defined(CONFIG_PCMCIA) || defined(CONFIG_PCMCIA_MODULE)
+
+#ifdef PCMCIA_DEBUG
+static int pc_debug = PCMCIA_DEBUG;
+module_param(pc_debug, int, 0644);
+#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
+static char *version =
+	"cb_das16_cs.c pcmcia code (David Schleef), modified from dummy_cs.c 1.31 2001/08/24 12:13:13 (David Hinds)";
+#else
+#define DEBUG(n, args...)
+#endif
+
+/*====================================================================*/
+
+static void das16cs_pcmcia_config(struct pcmcia_device *link);
+static void das16cs_pcmcia_release(struct pcmcia_device *link);
+static int das16cs_pcmcia_suspend(struct pcmcia_device *p_dev);
+static int das16cs_pcmcia_resume(struct pcmcia_device *p_dev);
+
+/*
+   The attach() and detach() entry points are used to create and destroy
+   "instances" of the driver, where each instance represents everything
+   needed to manage one actual PCMCIA card.
+*/
+
+static int das16cs_pcmcia_attach(struct pcmcia_device *);
+static void das16cs_pcmcia_detach(struct pcmcia_device *);
+
+/*
+   You'll also need to prototype all the functions that will actually
+   be used to talk to your device.  See 'memory_cs' for a good example
+   of a fully self-sufficient driver; the other drivers rely more or
+   less on other parts of the kernel.
+*/
+
+/*
+   The dev_info variable is the "key" that is used to match up this
+   device driver with appropriate cards, through the card configuration
+   database.
+*/
+
+static dev_info_t dev_info = "cb_das16_cs";
+
+typedef struct local_info_t {
+	struct pcmcia_device *link;
+	dev_node_t node;
+	int stop;
+	struct bus_operations *bus;
+} local_info_t;
+
+/*======================================================================
+
+    das16cs_pcmcia_attach() creates an "instance" of the driver, allocating
+    local data structures for one device.  The device is registered
+    with Card Services.
+
+    The dev_link structure is initialized, but we don't actually
+    configure the card at this point -- we wait until we receive a
+    card insertion event.
+
+======================================================================*/
+
+static int das16cs_pcmcia_attach(struct pcmcia_device *link)
+{
+	local_info_t *local;
+
+	DEBUG(0, "das16cs_pcmcia_attach()\n");
+
+	/* Allocate space for private device-specific data */
+	local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
+	if (!local)
+		return -ENOMEM;
+	local->link = link;
+	link->priv = local;
+
+	/* Initialize the pcmcia_device structure */
+	/* Interrupt setup */
+	link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
+	link->irq.IRQInfo1 = IRQ_LEVEL_ID;
+	link->irq.Handler = NULL;
+
+	link->conf.Attributes = 0;
+	link->conf.IntType = INT_MEMORY_AND_IO;
+
+	cur_dev = link;
+
+	das16cs_pcmcia_config(link);
+
+	return 0;
+}				/* das16cs_pcmcia_attach */
+
+static void das16cs_pcmcia_detach(struct pcmcia_device *link)
+{
+	DEBUG(0, "das16cs_pcmcia_detach(0x%p)\n", link);
+
+	if (link->dev_node) {
+		((local_info_t *) link->priv)->stop = 1;
+		das16cs_pcmcia_release(link);
+	}
+	/* This points to the parent local_info_t struct */
+	if (link->priv)
+		kfree(link->priv);
+}				/* das16cs_pcmcia_detach */
+
+static void das16cs_pcmcia_config(struct pcmcia_device *link)
+{
+	local_info_t *dev = link->priv;
+	tuple_t tuple;
+	cisparse_t parse;
+	int last_fn, last_ret;
+	u_char buf[64];
+	cistpl_cftable_entry_t dflt = { 0 };
+
+	DEBUG(0, "das16cs_pcmcia_config(0x%p)\n", link);
+
+	/*
+	   This reads the card's CONFIG tuple to find its configuration
+	   registers.
+	 */
+	tuple.DesiredTuple = CISTPL_CONFIG;
+	tuple.Attributes = 0;
+	tuple.TupleData = buf;
+	tuple.TupleDataMax = sizeof(buf);
+	tuple.TupleOffset = 0;
+	last_fn = GetFirstTuple;
+	if ((last_ret = pcmcia_get_first_tuple(link, &tuple)) != 0)
+		goto cs_failed;
+	last_fn = GetTupleData;
+	if ((last_ret = pcmcia_get_tuple_data(link, &tuple)) != 0)
+		goto cs_failed;
+	last_fn = ParseTuple;
+	if ((last_ret = pcmcia_parse_tuple(link, &tuple, &parse)) != 0)
+		goto cs_failed;
+	link->conf.ConfigBase = parse.config.base;
+	link->conf.Present = parse.config.rmask[0];
+
+	/*
+	   In this loop, we scan the CIS for configuration table entries,
+	   each of which describes a valid card configuration, including
+	   voltage, IO window, memory window, and interrupt settings.
+
+	   We make no assumptions about the card to be configured: we use
+	   just the information available in the CIS.  In an ideal world,
+	   this would work for any PCMCIA card, but it requires a complete
+	   and accurate CIS.  In practice, a driver usually "knows" most of
+	   these things without consulting the CIS, and most client drivers
+	   will only use the CIS to fill in implementation-defined details.
+	 */
+	tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
+	last_fn = GetFirstTuple;
+	if ((last_ret = pcmcia_get_first_tuple(link, &tuple)) != 0)
+		goto cs_failed;
+	while (1) {
+		cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
+		if (pcmcia_get_tuple_data(link, &tuple))
+			goto next_entry;
+		if (pcmcia_parse_tuple(link, &tuple, &parse))
+			goto next_entry;
+
+		if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
+			dflt = *cfg;
+		if (cfg->index == 0)
+			goto next_entry;
+		link->conf.ConfigIndex = cfg->index;
+
+		/* Does this card need audio output? */
+/*	if (cfg->flags & CISTPL_CFTABLE_AUDIO) {
+		link->conf.Attributes |= CONF_ENABLE_SPKR;
+		link->conf.Status = CCSR_AUDIO_ENA;
+	}
+*/
+		/* Do we need to allocate an interrupt? */
+		if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1)
+			link->conf.Attributes |= CONF_ENABLE_IRQ;
+
+		/* IO window settings */
+		link->io.NumPorts1 = link->io.NumPorts2 = 0;
+		if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
+			cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
+			link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
+			if (!(io->flags & CISTPL_IO_8BIT))
+				link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
+			if (!(io->flags & CISTPL_IO_16BIT))
+				link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
+			link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
+			link->io.BasePort1 = io->win[0].base;
+			link->io.NumPorts1 = io->win[0].len;
+			if (io->nwin > 1) {
+				link->io.Attributes2 = link->io.Attributes1;
+				link->io.BasePort2 = io->win[1].base;
+				link->io.NumPorts2 = io->win[1].len;
+			}
+			/* This reserves IO space but doesn't actually enable it */
+			if (pcmcia_request_io(link, &link->io))
+				goto next_entry;
+		}
+
+		/* If we got this far, we're cool! */
+		break;
+
+	      next_entry:
+		last_fn = GetNextTuple;
+		if ((last_ret = pcmcia_get_next_tuple(link, &tuple)) != 0)
+			goto cs_failed;
+	}
+
+	/*
+	   Allocate an interrupt line.  Note that this does not assign a
+	   handler to the interrupt, unless the 'Handler' member of the
+	   irq structure is initialized.
+	 */
+	if (link->conf.Attributes & CONF_ENABLE_IRQ) {
+		last_fn = RequestIRQ;
+		if ((last_ret = pcmcia_request_irq(link, &link->irq)) != 0)
+			goto cs_failed;
+	}
+	/*
+	   This actually configures the PCMCIA socket -- setting up
+	   the I/O windows and the interrupt mapping, and putting the
+	   card and host interface into "Memory and IO" mode.
+	 */
+	last_fn = RequestConfiguration;
+	if ((last_ret = pcmcia_request_configuration(link, &link->conf)) != 0)
+		goto cs_failed;
+
+	/*
+	   At this point, the dev_node_t structure(s) need to be
+	   initialized and arranged in a linked list at link->dev.
+	 */
+	sprintf(dev->node.dev_name, "cb_das16_cs");
+	dev->node.major = dev->node.minor = 0;
+	link->dev_node = &dev->node;
+
+	/* Finally, report what we've done */
+	printk(KERN_INFO "%s: index 0x%02x",
+		dev->node.dev_name, link->conf.ConfigIndex);
+	if (link->conf.Attributes & CONF_ENABLE_IRQ)
+		printk(", irq %u", link->irq.AssignedIRQ);
+	if (link->io.NumPorts1)
+		printk(", io 0x%04x-0x%04x", link->io.BasePort1,
+			link->io.BasePort1 + link->io.NumPorts1 - 1);
+	if (link->io.NumPorts2)
+		printk(" & 0x%04x-0x%04x", link->io.BasePort2,
+			link->io.BasePort2 + link->io.NumPorts2 - 1);
+	printk("\n");
+
+	return;
+
+      cs_failed:
+	cs_error(link, last_fn, last_ret);
+	das16cs_pcmcia_release(link);
+}				/* das16cs_pcmcia_config */
+
+static void das16cs_pcmcia_release(struct pcmcia_device *link)
+{
+	DEBUG(0, "das16cs_pcmcia_release(0x%p)\n", link);
+	pcmcia_disable_device(link);
+}				/* das16cs_pcmcia_release */
+
+static int das16cs_pcmcia_suspend(struct pcmcia_device *link)
+{
+	local_info_t *local = link->priv;
+
+	/* Mark the device as stopped, to block IO until later */
+	local->stop = 1;
+
+	return 0;
+}				/* das16cs_pcmcia_suspend */
+
+static int das16cs_pcmcia_resume(struct pcmcia_device *link)
+{
+	local_info_t *local = link->priv;
+
+	local->stop = 0;
+	return 0;
+}				/* das16cs_pcmcia_resume */
+
+/*====================================================================*/
+
+static 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);
+
+struct pcmcia_driver das16cs_driver = {
+	.probe = das16cs_pcmcia_attach,
+	.remove = das16cs_pcmcia_detach,
+	.suspend = das16cs_pcmcia_suspend,
+	.resume = das16cs_pcmcia_resume,
+	.id_table = das16cs_id_table,
+	.owner = THIS_MODULE,
+	.drv = {
+			.name = dev_info,
+		},
+};
+
+static int __init init_das16cs_pcmcia_cs(void)
+{
+	DEBUG(0, "%s\n", version);
+	pcmcia_register_driver(&das16cs_driver);
+	return 0;
+}
+
+static void __exit exit_das16cs_pcmcia_cs(void)
+{
+	DEBUG(0, "das16cs_pcmcia_cs: unloading\n");
+	pcmcia_unregister_driver(&das16cs_driver);
+}
+
+int __init init_module(void)
+{
+	int ret;
+
+	ret = init_das16cs_pcmcia_cs();
+	if (ret < 0)
+		return ret;
+
+	return comedi_driver_register(&driver_das16cs);
+}
+
+void __exit cleanup_module(void)
+{
+	exit_das16cs_pcmcia_cs();
+	comedi_driver_unregister(&driver_das16cs);
+}
+
+#else
+COMEDI_INITCLEANUP(driver_das16cs);
+#endif //CONFIG_PCMCIA