Staging: comedi: add quatech_daqp_cs driver

Driver for Quatech DAQP PCMCIA data capture cards

From: Brent Baccala <baccala@freesoft.org>
Cc: 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>

drivers/staging/comedi/drivers/quatech_daqp_cs.c

+/*======================================================================
+
+    comedi/drivers/quatech_daqp_cs.c
+
+    Quatech DAQP PCMCIA data capture cards COMEDI client driver
+    Copyright (C) 2000, 2003 Brent Baccala <baccala@freesoft.org>
+    The DAQP interface code in this file is released into the public domain.
+
+    COMEDI - Linux Control and Measurement Device Interface
+    Copyright (C) 1998 David A. Schleef <ds@schleef.org>
+    http://www.comedi.org/
+
+    quatech_daqp_cs.c 1.10
+
+    Documentation for the DAQP PCMCIA cards can be found on Quatech's site:
+
+                ftp://ftp.quatech.com/Manuals/daqp-208.pdf
+
+    This manual is for both the DAQP-208 and the DAQP-308.
+
+    What works:
+
+	- A/D conversion
+	    - 8 channels
+	    - 4 gain ranges
+	    - ground ref or differential
+	    - single-shot and timed both supported
+	- D/A conversion, single-shot
+	- digital I/O
+
+    What doesn't:
+
+	- any kind of triggering - external or D/A channel 1
+	- the card's optional expansion board
+	- the card's timer (for anything other than A/D conversion)
+	- D/A update modes other than immediate (i.e, timed)
+	- fancier timing modes
+	- setting card's FIFO buffer thresholds to anything but default
+
+======================================================================*/
+
+/*
+Driver: quatech_daqp_cs
+Description: Quatech DAQP PCMCIA data capture cards
+Author: Brent Baccala <baccala@freesoft.org>
+Status: works
+Devices: [Quatech] DAQP-208 (daqp), DAQP-308
+*/
+
+#include "../comedidev.h"
+
+#include <linux/version.h>
+#include <pcmcia/cs_types.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/cisreg.h>
+#include <pcmcia/ds.h>
+
+/*
+   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.
+*/
+
+#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 = "quatech_daqp_cs.c 1.10 2003/04/21 (Brent Baccala)";
+#else
+#define DEBUG(n, args...)
+#endif
+
+/* Maximum number of separate DAQP devices we'll allow */
+#define MAX_DEV         4
+
+typedef struct local_info_t {
+	struct pcmcia_device *link;
+	dev_node_t node;
+	int stop;
+	int table_index;
+	char board_name[32];
+
+	enum { semaphore, buffer } interrupt_mode;
+
+	struct semaphore eos;
+
+	comedi_device *dev;
+	comedi_subdevice *s;
+	int count;
+} local_info_t;
+
+/* A list of "instances" of the device. */
+
+static local_info_t *dev_table[MAX_DEV] = { NULL, /* ... */  };
+
+/* The DAQP communicates with the system through a 16 byte I/O window. */
+
+#define DAQP_FIFO_SIZE		4096
+
+#define DAQP_FIFO		0
+#define DAQP_SCANLIST		1
+#define DAQP_CONTROL		2
+#define DAQP_STATUS		2
+#define DAQP_DIGITAL_IO		3
+#define DAQP_PACER_LOW		4
+#define DAQP_PACER_MID		5
+#define DAQP_PACER_HIGH		6
+#define DAQP_COMMAND		7
+#define DAQP_DA			8
+#define DAQP_TIMER		10
+#define DAQP_AUX		15
+
+#define DAQP_SCANLIST_DIFFERENTIAL	0x4000
+#define DAQP_SCANLIST_GAIN(x)		((x)<<12)
+#define DAQP_SCANLIST_CHANNEL(x)	((x)<<8)
+#define DAQP_SCANLIST_START		0x0080
+#define DAQP_SCANLIST_EXT_GAIN(x)	((x)<<4)
+#define DAQP_SCANLIST_EXT_CHANNEL(x)	(x)
+
+#define DAQP_CONTROL_PACER_100kHz	0xc0
+#define DAQP_CONTROL_PACER_1MHz		0x80
+#define DAQP_CONTROL_PACER_5MHz		0x40
+#define DAQP_CONTROL_PACER_EXTERNAL	0x00
+#define DAQP_CONTORL_EXPANSION		0x20
+#define DAQP_CONTROL_EOS_INT_ENABLE	0x10
+#define DAQP_CONTROL_FIFO_INT_ENABLE	0x08
+#define DAQP_CONTROL_TRIGGER_ONESHOT	0x00
+#define DAQP_CONTROL_TRIGGER_CONTINUOUS	0x04
+#define DAQP_CONTROL_TRIGGER_INTERNAL	0x00
+#define DAQP_CONTROL_TRIGGER_EXTERNAL	0x02
+#define DAQP_CONTROL_TRIGGER_RISING	0x00
+#define DAQP_CONTROL_TRIGGER_FALLING	0x01
+
+#define DAQP_STATUS_IDLE		0x80
+#define DAQP_STATUS_RUNNING		0x40
+#define DAQP_STATUS_EVENTS		0x38
+#define DAQP_STATUS_DATA_LOST		0x20
+#define DAQP_STATUS_END_OF_SCAN		0x10
+#define DAQP_STATUS_FIFO_THRESHOLD	0x08
+#define DAQP_STATUS_FIFO_FULL		0x04
+#define DAQP_STATUS_FIFO_NEARFULL	0x02
+#define DAQP_STATUS_FIFO_EMPTY		0x01
+
+#define DAQP_COMMAND_ARM		0x80
+#define DAQP_COMMAND_RSTF		0x40
+#define DAQP_COMMAND_RSTQ		0x20
+#define DAQP_COMMAND_STOP		0x10
+#define DAQP_COMMAND_LATCH		0x08
+#define DAQP_COMMAND_100kHz		0x00
+#define DAQP_COMMAND_50kHz		0x02
+#define DAQP_COMMAND_25kHz		0x04
+#define DAQP_COMMAND_FIFO_DATA		0x01
+#define DAQP_COMMAND_FIFO_PROGRAM	0x00
+
+#define DAQP_AUX_TRIGGER_TTL		0x00
+#define DAQP_AUX_TRIGGER_ANALOG		0x80
+#define DAQP_AUX_TRIGGER_PRETRIGGER	0x40
+#define DAQP_AUX_TIMER_INT_ENABLE	0x20
+#define DAQP_AUX_TIMER_RELOAD		0x00
+#define DAQP_AUX_TIMER_PAUSE		0x08
+#define DAQP_AUX_TIMER_GO		0x10
+#define DAQP_AUX_TIMER_GO_EXTERNAL	0x18
+#define DAQP_AUX_TIMER_EXTERNAL_SRC	0x04
+#define DAQP_AUX_TIMER_INTERNAL_SRC	0x00
+#define DAQP_AUX_DA_DIRECT		0x00
+#define DAQP_AUX_DA_OVERFLOW		0x01
+#define DAQP_AUX_DA_EXTERNAL		0x02
+#define DAQP_AUX_DA_PACER		0x03
+
+#define DAQP_AUX_RUNNING		0x80
+#define DAQP_AUX_TRIGGERED		0x40
+#define DAQP_AUX_DA_BUFFER		0x20
+#define DAQP_AUX_TIMER_OVERFLOW		0x10
+#define DAQP_AUX_CONVERSION		0x08
+#define DAQP_AUX_DATA_LOST		0x04
+#define DAQP_AUX_FIFO_NEARFULL		0x02
+#define DAQP_AUX_FIFO_EMPTY		0x01
+
+/* These range structures tell COMEDI how the sample values map to
+ * voltages.  The A/D converter has four ranges: +/- 10V through
+ * +/- 1.25V, and the D/A converter has only one: +/- 5V.
+ */
+
+static const comedi_lrange range_daqp_ai = { 4, {
+			BIP_RANGE(10),
+			BIP_RANGE(5),
+			BIP_RANGE(2.5),
+			BIP_RANGE(1.25)
+	}
+};
+
+static const comedi_lrange range_daqp_ao = { 1, {BIP_RANGE(5)} };
+
+/*====================================================================*/
+
+/* comedi interface code */
+
+static int daqp_attach(comedi_device * dev, comedi_devconfig * it);
+static int daqp_detach(comedi_device * dev);
+static comedi_driver driver_daqp = {
+      driver_name:"quatech_daqp_cs",
+      module:THIS_MODULE,
+      attach:daqp_attach,
+      detach:daqp_detach,
+};
+
+#ifdef DAQP_DEBUG
+
+static void daqp_dump(comedi_device * dev)
+{
+	printk("DAQP: status %02x; aux status %02x\n",
+		inb(dev->iobase + DAQP_STATUS), inb(dev->iobase + DAQP_AUX));
+}
+
+static void hex_dump(char *str, void *ptr, int len)
+{
+	unsigned char *cptr = ptr;
+	int i;
+
+	printk(str);
+
+	for (i = 0; i < len; i++) {
+		if (i % 16 == 0) {
+			printk("\n0x%08x:", (unsigned int)cptr);
+		}
+		printk(" %02x", *(cptr++));
+	}
+	printk("\n");
+}
+
+#endif
+
+/* Cancel a running acquisition */
+
+static int daqp_ai_cancel(comedi_device * dev, comedi_subdevice * s)
+{
+	local_info_t *local = (local_info_t *) s->private;
+
+	if (local->stop) {
+		return -EIO;
+	}
+
+	outb(DAQP_COMMAND_STOP, dev->iobase + DAQP_COMMAND);
+
+	/* flush any linguring data in FIFO - superfluous here */
+	/* outb(DAQP_COMMAND_RSTF, dev->iobase+DAQP_COMMAND); */
+
+	local->interrupt_mode = semaphore;
+
+	return 0;
+}
+
+/* Interrupt handler
+ *
+ * Operates in one of two modes.  If local->interrupt_mode is
+ * 'semaphore', just signal the local->eos semaphore and return
+ * (one-shot mode).  Otherwise (continuous mode), read data in from
+ * the card, transfer it to the buffer provided by the higher-level
+ * comedi kernel module, and signal various comedi callback routines,
+ * which run pretty quick.
+ */
+
+static void daqp_interrupt(int irq, void *dev_id PT_REGS_ARG)
+{
+	local_info_t *local = (local_info_t *) dev_id;
+	comedi_device *dev;
+	comedi_subdevice *s;
+	int loop_limit = 10000;
+	int status;
+
+	if (local == NULL) {
+		printk(KERN_WARNING
+			"daqp_interrupt(): irq %d for unknown device.\n", irq);
+		return;
+	}
+
+	dev = local->dev;
+	if (dev == NULL) {
+		printk(KERN_WARNING "daqp_interrupt(): NULL comedi_device.\n");
+		return;
+	}
+
+	if (!dev->attached) {
+		printk(KERN_WARNING
+			"daqp_interrupt(): comedi_device not yet attached.\n");
+		return;
+	}
+
+	s = local->s;
+	if (s == NULL) {
+		printk(KERN_WARNING
+			"daqp_interrupt(): NULL comedi_subdevice.\n");
+		return;
+	}
+
+	if ((local_info_t *) s->private != local) {
+		printk(KERN_WARNING
+			"daqp_interrupt(): invalid comedi_subdevice.\n");
+		return;
+	}
+
+	switch (local->interrupt_mode) {
+
+	case semaphore:
+
+		up(&local->eos);
+		break;
+
+	case buffer:
+
+		while (!((status = inb(dev->iobase + DAQP_STATUS))
+				& DAQP_STATUS_FIFO_EMPTY)) {
+
+			sampl_t data;
+
+			if (status & DAQP_STATUS_DATA_LOST) {
+				s->async->events |=
+					COMEDI_CB_EOA | COMEDI_CB_OVERFLOW;
+				printk("daqp: data lost\n");
+				daqp_ai_cancel(dev, s);
+				break;
+			}
+
+			data = inb(dev->iobase + DAQP_FIFO);
+			data |= inb(dev->iobase + DAQP_FIFO) << 8;
+			data ^= 0x8000;
+
+			comedi_buf_put(s->async, data);
+
+			/* If there's a limit, decrement it
+			 * and stop conversion if zero
+			 */
+
+			if (local->count > 0) {
+				local->count--;
+				if (local->count == 0) {
+					daqp_ai_cancel(dev, s);
+					s->async->events |= COMEDI_CB_EOA;
+					break;
+				}
+			}
+
+			if ((loop_limit--) <= 0)
+				break;
+		}
+
+		if (loop_limit <= 0) {
+			printk(KERN_WARNING
+				"loop_limit reached in daqp_interrupt()\n");
+			daqp_ai_cancel(dev, s);
+			s->async->events |= COMEDI_CB_EOA | COMEDI_CB_ERROR;
+		}
+
+		s->async->events |= COMEDI_CB_BLOCK;
+
+		comedi_event(dev, s);
+	}
+}
+
+/* One-shot analog data acquisition routine */
+
+static int daqp_ai_insn_read(comedi_device * dev, comedi_subdevice * s,
+	comedi_insn * insn, lsampl_t * data)
+{
+	local_info_t *local = (local_info_t *) s->private;
+	int i;
+	int v;
+	int counter = 10000;
+
+	if (local->stop) {
+		return -EIO;
+	}
+
+	/* Stop any running conversion */
+	daqp_ai_cancel(dev, s);
+
+	outb(0, dev->iobase + DAQP_AUX);
+
+	/* Reset scan list queue */
+	outb(DAQP_COMMAND_RSTQ, dev->iobase + DAQP_COMMAND);
+
+	/* Program one scan list entry */
+
+	v = DAQP_SCANLIST_CHANNEL(CR_CHAN(insn->chanspec))
+		| DAQP_SCANLIST_GAIN(CR_RANGE(insn->chanspec));
+
+	if (CR_AREF(insn->chanspec) == AREF_DIFF) {
+		v |= DAQP_SCANLIST_DIFFERENTIAL;
+	}
+
+	v |= DAQP_SCANLIST_START;
+
+	outb(v & 0xff, dev->iobase + DAQP_SCANLIST);
+	outb(v >> 8, dev->iobase + DAQP_SCANLIST);
+
+	/* Reset data FIFO (see page 28 of DAQP User's Manual) */
+
+	outb(DAQP_COMMAND_RSTF, dev->iobase + DAQP_COMMAND);
+
+	/* Set trigger */
+
+	v = DAQP_CONTROL_TRIGGER_ONESHOT | DAQP_CONTROL_TRIGGER_INTERNAL
+		| DAQP_CONTROL_PACER_100kHz | DAQP_CONTROL_EOS_INT_ENABLE;
+
+	outb(v, dev->iobase + DAQP_CONTROL);
+
+	/* Reset any pending interrupts (my card has a tendancy to require
+	 * require multiple reads on the status register to achieve this)
+	 */
+
+	while (--counter
+		&& (inb(dev->iobase + DAQP_STATUS) & DAQP_STATUS_EVENTS)) ;
+	if (!counter) {
+		printk("daqp: couldn't clear interrupts in status register\n");
+		return -1;
+	}
+
+	/* Make sure semaphore is blocked */
+	sema_init(&local->eos, 0);
+	local->interrupt_mode = semaphore;
+	local->dev = dev;
+	local->s = s;
+
+	for (i = 0; i < insn->n; i++) {
+
+		/* Start conversion */
+		outb(DAQP_COMMAND_ARM | DAQP_COMMAND_FIFO_DATA,
+			dev->iobase + DAQP_COMMAND);
+
+		/* Wait for interrupt service routine to unblock semaphore */
+		/* Maybe could use a timeout here, but it's interruptible */
+		if (down_interruptible(&local->eos))
+			return -EINTR;
+
+		data[i] = inb(dev->iobase + DAQP_FIFO);
+		data[i] |= inb(dev->iobase + DAQP_FIFO) << 8;
+		data[i] ^= 0x8000;
+	}
+
+	return insn->n;
+}
+
+/* This function converts ns nanoseconds to a counter value suitable
+ * for programming the device.  We always use the DAQP's 5 MHz clock,
+ * which with its 24-bit counter, allows values up to 84 seconds.
+ * Also, the function adjusts ns so that it cooresponds to the actual
+ * time that the device will use.
+ */
+
+static int daqp_ns_to_timer(unsigned int *ns, int round)
+{
+	int timer;
+
+	timer = *ns / 200;
+	*ns = timer * 200;
+
+	return timer;
+}
+
+/* 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 executed by the cmd ioctl.
+ *
+ * cmdtest returns 1,2,3,4 or 0, depending on which tests
+ * the command passes.
+ */
+
+static int daqp_ai_cmdtest(comedi_device * dev, comedi_subdevice * s,
+	comedi_cmd * cmd)
+{
+	int err = 0;
+	int tmp;
+
+	/* 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_FOLLOW;
+	if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src)
+		err++;
+
+	tmp = cmd->convert_src;
+	cmd->convert_src &= TRIG_TIMER | TRIG_NOW;
+	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_FOLLOW)
+		err++;
+	if (cmd->convert_src != TRIG_NOW && cmd->convert_src != TRIG_TIMER)
+		err++;
+	if (cmd->scan_begin_src == TRIG_FOLLOW && cmd->convert_src == TRIG_NOW)
+		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	/* 100 kHz - in nanoseconds */
+
+	if (cmd->scan_begin_src == TRIG_TIMER
+		&& cmd->scan_begin_arg < MAX_SPEED) {
+		cmd->scan_begin_arg = MAX_SPEED;
+		err++;
+	}
+
+	/* If both scan_begin and convert are both timer values, the only
+	 * way that can make sense is if the scan time is the number of
+	 * conversions times the convert time
+	 */
+
+	if (cmd->scan_begin_src == TRIG_TIMER && cmd->convert_src == TRIG_TIMER
+		&& cmd->scan_begin_arg !=
+		cmd->convert_arg * cmd->scan_end_arg) {
+		err++;
+	}
+
+	if (cmd->convert_src == TRIG_TIMER && cmd->convert_arg < MAX_SPEED) {
+		cmd->convert_arg = MAX_SPEED;
+		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) {
+		tmp = cmd->scan_begin_arg;
+		daqp_ns_to_timer(&cmd->scan_begin_arg,
+			cmd->flags & TRIG_ROUND_MASK);
+		if (tmp != cmd->scan_begin_arg)
+			err++;
+	}
+
+	if (cmd->convert_src == TRIG_TIMER) {
+		tmp = cmd->convert_arg;
+		daqp_ns_to_timer(&cmd->convert_arg,
+			cmd->flags & TRIG_ROUND_MASK);
+		if (tmp != cmd->convert_arg)
+			err++;
+	}
+
+	if (err)
+		return 4;
+
+	return 0;
+}
+
+static int daqp_ai_cmd(comedi_device * dev, comedi_subdevice * s)
+{
+	local_info_t *local = (local_info_t *) s->private;
+	comedi_cmd *cmd = &s->async->cmd;
+	int counter = 100;
+	int scanlist_start_on_every_entry;
+	int threshold;
+
+	int i;
+	int v;
+
+	if (local->stop) {
+		return -EIO;
+	}
+
+	/* Stop any running conversion */
+	daqp_ai_cancel(dev, s);
+
+	outb(0, dev->iobase + DAQP_AUX);
+
+	/* Reset scan list queue */
+	outb(DAQP_COMMAND_RSTQ, dev->iobase + DAQP_COMMAND);
+
+	/* Program pacer clock
+	 *
+	 * There's two modes we can operate in.  If convert_src is
+	 * TRIG_TIMER, then convert_arg specifies the time between
+	 * each conversion, so we program the pacer clock to that
+	 * frequency and set the SCANLIST_START bit on every scanlist
+	 * entry.  Otherwise, convert_src is TRIG_NOW, which means
+	 * we want the fastest possible conversions, scan_begin_src
+	 * is TRIG_TIMER, and scan_begin_arg specifies the time between
+	 * each scan, so we program the pacer clock to this frequency
+	 * and only set the SCANLIST_START bit on the first entry.
+	 */
+
+	if (cmd->convert_src == TRIG_TIMER) {
+		int counter = daqp_ns_to_timer(&cmd->convert_arg,
+			cmd->flags & TRIG_ROUND_MASK);
+		outb(counter & 0xff, dev->iobase + DAQP_PACER_LOW);
+		outb((counter >> 8) & 0xff, dev->iobase + DAQP_PACER_MID);
+		outb((counter >> 16) & 0xff, dev->iobase + DAQP_PACER_HIGH);
+		scanlist_start_on_every_entry = 1;
+	} else {
+		int counter = daqp_ns_to_timer(&cmd->scan_begin_arg,
+			cmd->flags & TRIG_ROUND_MASK);
+		outb(counter & 0xff, dev->iobase + DAQP_PACER_LOW);
+		outb((counter >> 8) & 0xff, dev->iobase + DAQP_PACER_MID);
+		outb((counter >> 16) & 0xff, dev->iobase + DAQP_PACER_HIGH);
+		scanlist_start_on_every_entry = 0;
+	}
+
+	/* Program scan list */
+
+	for (i = 0; i < cmd->chanlist_len; i++) {
+
+		int chanspec = cmd->chanlist[i];
+
+		/* Program one scan list entry */
+
+		v = DAQP_SCANLIST_CHANNEL(CR_CHAN(chanspec))
+			| DAQP_SCANLIST_GAIN(CR_RANGE(chanspec));
+
+		if (CR_AREF(chanspec) == AREF_DIFF) {
+			v |= DAQP_SCANLIST_DIFFERENTIAL;
+		}
+
+		if (i == 0 || scanlist_start_on_every_entry) {
+			v |= DAQP_SCANLIST_START;
+		}
+
+		outb(v & 0xff, dev->iobase + DAQP_SCANLIST);
+		outb(v >> 8, dev->iobase + DAQP_SCANLIST);
+	}
+
+	/* Now it's time to program the FIFO threshold, basically the
+	 * number of samples the card will buffer before it interrupts
+	 * the CPU.
+	 *
+	 * If we don't have a stop count, then use half the size of
+	 * the FIFO (the manufacturer's recommendation).  Consider
+	 * that the FIFO can hold 2K samples (4K bytes).  With the
+	 * threshold set at half the FIFO size, we have a margin of
+	 * error of 1024 samples.  At the chip's maximum sample rate
+	 * of 100,000 Hz, the CPU would have to delay interrupt
+	 * service for a full 10 milliseconds in order to lose data
+	 * here (as opposed to higher up in the kernel).  I've never
+	 * seen it happen.  However, for slow sample rates it may
+	 * buffer too much data and introduce too much delay for the
+	 * user application.
+	 *
+	 * If we have a stop count, then things get more interesting.
+	 * If the stop count is less than the FIFO size (actually
+	 * three-quarters of the FIFO size - see below), we just use
+	 * the stop count itself as the threshold, the card interrupts
+	 * us when that many samples have been taken, and we kill the
+	 * acquisition at that point and are done.  If the stop count
+	 * is larger than that, then we divide it by 2 until it's less
+	 * than three quarters of the FIFO size (we always leave the
+	 * top quarter of the FIFO as protection against sluggish CPU
+	 * interrupt response) and use that as the threshold.  So, if
+	 * the stop count is 4000 samples, we divide by two twice to
+	 * get 1000 samples, use that as the threshold, take four
+	 * interrupts to get our 4000 samples and are done.
+	 *
+	 * The algorithm could be more clever.  For example, if 81000
+	 * samples are requested, we could set the threshold to 1500
+	 * samples and take 54 interrupts to get 81000.  But 54 isn't
+	 * a power of two, so this algorithm won't find that option.
+	 * Instead, it'll set the threshold at 1266 and take 64
+	 * interrupts to get 81024 samples, of which the last 24 will
+	 * be discarded... but we won't get the last interrupt until
+	 * they've been collected.  To find the first option, the
+	 * computer could look at the prime decomposition of the
+	 * sample count (81000 = 3^4 * 5^3 * 2^3) and factor it into a
+	 * threshold (1500 = 3 * 5^3 * 2^2) and an interrupt count (54
+	 * = 3^3 * 2).  Hmmm... a one-line while loop or prime
+	 * decomposition of integers... I'll leave it the way it is.
+	 *
+	 * I'll also note a mini-race condition before ignoring it in
+	 * the code.  Let's say we're taking 4000 samples, as before.
+	 * After 1000 samples, we get an interrupt.  But before that
+	 * interrupt is completely serviced, another sample is taken
+	 * and loaded into the FIFO.  Since the interrupt handler
+	 * empties the FIFO before returning, it will read 1001 samples.
+	 * If that happens four times, we'll end up taking 4004 samples,
+	 * not 4000.  The interrupt handler will discard the extra four
+	 * samples (by halting the acquisition with four samples still
+	 * in the FIFO), but we will have to wait for them.
+	 *
+	 * In short, this code works pretty well, but for either of
+	 * the two reasons noted, might end up waiting for a few more
+	 * samples than actually requested.  Shouldn't make too much
+	 * of a difference.
+	 */
+
+	/* Save away the number of conversions we should perform, and
+	 * compute the FIFO threshold (in bytes, not samples - that's
+	 * why we multiple local->count by 2 = sizeof(sample))
+	 */
+
+	if (cmd->stop_src == TRIG_COUNT) {
+		local->count = cmd->stop_arg * cmd->scan_end_arg;
+		threshold = 2 * local->count;
+		while (threshold > DAQP_FIFO_SIZE * 3 / 4)
+			threshold /= 2;
+	} else {
+		local->count = -1;
+		threshold = DAQP_FIFO_SIZE / 2;
+	}
+
+	/* Reset data FIFO (see page 28 of DAQP User's Manual) */
+
+	outb(DAQP_COMMAND_RSTF, dev->iobase + DAQP_COMMAND);
+
+	/* Set FIFO threshold.  First two bytes are near-empty
+	 * threshold, which is unused; next two bytes are near-full
+	 * threshold.  We computed the number of bytes we want in the
+	 * FIFO when the interrupt is generated, what the card wants
+	 * is actually the number of available bytes left in the FIFO
+	 * when the interrupt is to happen.
+	 */
+
+	outb(0x00, dev->iobase + DAQP_FIFO);
+	outb(0x00, dev->iobase + DAQP_FIFO);
+
+	outb((DAQP_FIFO_SIZE - threshold) & 0xff, dev->iobase + DAQP_FIFO);
+	outb((DAQP_FIFO_SIZE - threshold) >> 8, dev->iobase + DAQP_FIFO);
+
+	/* Set trigger */
+
+	v = DAQP_CONTROL_TRIGGER_CONTINUOUS | DAQP_CONTROL_TRIGGER_INTERNAL
+		| DAQP_CONTROL_PACER_5MHz | DAQP_CONTROL_FIFO_INT_ENABLE;
+
+	outb(v, dev->iobase + DAQP_CONTROL);
+
+	/* Reset any pending interrupts (my card has a tendancy to require
+	 * require multiple reads on the status register to achieve this)
+	 */
+
+	while (--counter
+		&& (inb(dev->iobase + DAQP_STATUS) & DAQP_STATUS_EVENTS)) ;
+	if (!counter) {
+		printk("daqp: couldn't clear interrupts in status register\n");
+		return -1;
+	}
+
+	local->interrupt_mode = buffer;
+	local->dev = dev;
+	local->s = s;
+
+	/* Start conversion */
+	outb(DAQP_COMMAND_ARM | DAQP_COMMAND_FIFO_DATA,
+		dev->iobase + DAQP_COMMAND);
+
+	return 0;
+}
+
+/* Single-shot analog output routine */
+
+static int daqp_ao_insn_write(comedi_device * dev, comedi_subdevice * s,
+	comedi_insn * insn, lsampl_t * data)
+{
+	local_info_t *local = (local_info_t *) s->private;
+	int d;
+	unsigned int chan;
+
+	if (local->stop) {
+		return -EIO;
+	}
+
+	chan = CR_CHAN(insn->chanspec);
+	d = data[0];
+	d &= 0x0fff;
+	d ^= 0x0800;		/* Flip the sign */
+	d |= chan << 12;
+
+	/* Make sure D/A update mode is direct update */
+	outb(0, dev->iobase + DAQP_AUX);
+
+	outw(d, dev->iobase + DAQP_DA);
+
+	return 1;
+}
+
+/* Digital input routine */
+
+static int daqp_di_insn_read(comedi_device * dev, comedi_subdevice * s,
+	comedi_insn * insn, lsampl_t * data)
+{
+	local_info_t *local = (local_info_t *) s->private;
+
+	if (local->stop) {
+		return -EIO;
+	}
+
+	data[0] = inb(dev->iobase + DAQP_DIGITAL_IO);
+
+	return 1;
+}
+
+/* Digital output routine */
+
+static int daqp_do_insn_write(comedi_device * dev, comedi_subdevice * s,
+	comedi_insn * insn, lsampl_t * data)
+{
+	local_info_t *local = (local_info_t *) s->private;
+
+	if (local->stop) {
+		return -EIO;
+	}
+
+	outw(data[0] & 0xf, dev->iobase + DAQP_DIGITAL_IO);
+
+	return 1;
+}
+
+/* daqp_attach is called via comedi_config to attach a comedi device
+ * to a /dev/comedi*.  Note that this is different from daqp_cs_attach()
+ * which is called by the pcmcia subsystem to attach the PCMCIA card
+ * when it is inserted.
+ */
+
+static int daqp_attach(comedi_device * dev, comedi_devconfig * it)
+{
+	int ret;
+	local_info_t *local = dev_table[it->options[0]];
+	tuple_t tuple;
+	int i;
+	comedi_subdevice *s;
+
+	if (it->options[0] < 0 || it->options[0] >= MAX_DEV || !local) {
+		printk("comedi%d: No such daqp device %d\n",
+			dev->minor, it->options[0]);
+		return -EIO;
+	}
+
+	/* Typically brittle code that I don't completely understand,
+	 * but "it works on my card".  The intent is to pull the model
+	 * number of the card out the PCMCIA CIS and stash it away as
+	 * the COMEDI board_name.  Looks like the third field in
+	 * CISTPL_VERS_1 (offset 2) holds what we're looking for.  If
+	 * it doesn't work, who cares, just leave it as "DAQP".
+	 */
+
+	strcpy(local->board_name, "DAQP");
+	dev->board_name = local->board_name;
+
+	tuple.DesiredTuple = CISTPL_VERS_1;
+	if (pcmcia_get_first_tuple(local->link, &tuple) == 0) {
+		u_char buf[128];
+
+		buf[0] = buf[sizeof(buf) - 1] = 0;
+		tuple.TupleData = buf;
+		tuple.TupleDataMax = sizeof(buf);
+		tuple.TupleOffset = 2;
+		if (pcmcia_get_tuple_data(local->link, &tuple) == 0) {
+
+			for (i = 0; i < tuple.TupleDataLen - 4; i++)
+				if (buf[i] == 0)
+					break;
+			for (i++; i < tuple.TupleDataLen - 4; i++)
+				if (buf[i] == 0)
+					break;
+			i++;
+			if ((i < tuple.TupleDataLen - 4)
+				&& (strncmp(buf + i, "DAQP", 4) == 0)) {
+				strncpy(local->board_name, buf + i,
+					sizeof(local->board_name));
+			}
+		}
+	}
+
+	dev->iobase = local->link->io.BasePort1;
+
+	if ((ret = alloc_subdevices(dev, 4)) < 0)
+		return ret;
+
+	printk("comedi%d: attaching daqp%d (io 0x%04lx)\n",
+		dev->minor, it->options[0], dev->iobase);
+
+	s = dev->subdevices + 0;
+	dev->read_subdev = s;
+	s->private = local;
+	s->type = COMEDI_SUBD_AI;
+	s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF | SDF_CMD_READ;
+	s->n_chan = 8;
+	s->len_chanlist = 2048;
+	s->maxdata = 0xffff;
+	s->range_table = &range_daqp_ai;
+	s->insn_read = daqp_ai_insn_read;
+	s->do_cmdtest = daqp_ai_cmdtest;
+	s->do_cmd = daqp_ai_cmd;
+	s->cancel = daqp_ai_cancel;
+
+	s = dev->subdevices + 1;
+	dev->write_subdev = s;
+	s->private = local;
+	s->type = COMEDI_SUBD_AO;
+	s->subdev_flags = SDF_WRITEABLE;
+	s->n_chan = 2;
+	s->len_chanlist = 1;
+	s->maxdata = 0x0fff;
+	s->range_table = &range_daqp_ao;
+	s->insn_write = daqp_ao_insn_write;
+
+	s = dev->subdevices + 2;
+	s->private = local;
+	s->type = COMEDI_SUBD_DI;
+	s->subdev_flags = SDF_READABLE;
+	s->n_chan = 1;
+	s->len_chanlist = 1;
+	s->insn_read = daqp_di_insn_read;
+
+	s = dev->subdevices + 3;
+	s->private = local;
+	s->type = COMEDI_SUBD_DO;
+	s->subdev_flags = SDF_WRITEABLE;
+	s->n_chan = 1;
+	s->len_chanlist = 1;
+	s->insn_write = daqp_do_insn_write;
+
+	return 1;
+}
+
+/* daqp_detach (called from comedi_comdig) does nothing. If the PCMCIA
+ * card is removed, daqp_cs_detach() is called by the pcmcia subsystem.
+ */
+
+static int daqp_detach(comedi_device * dev)
+{
+	printk("comedi%d: detaching daqp\n", dev->minor);
+
+	return 0;
+}
+
+/*====================================================================
+
+    PCMCIA interface code
+
+    The rest of the code in this file is based on dummy_cs.c v1.24
+    from the Linux pcmcia_cs distribution v3.1.8 and is subject
+    to the following license agreement.
+
+    The remaining contents of this file are subject to the Mozilla Public
+    License Version 1.1 (the "License"); you may not use this file
+    except in compliance with the License. You may obtain a copy of
+    the License at http://www.mozilla.org/MPL/
+
+    Software distributed under the License is distributed on an "AS
+    IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+    implied. See the License for the specific language governing
+    rights and limitations under the License.
+
+    The initial developer of the original code is David A. Hinds
+    <dhinds@pcmcia.sourceforge.org>.  Portions created by David A. Hinds
+    are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
+
+    Alternatively, the contents of this file may be used under the
+    terms of the GNU Public License version 2 (the "GPL"), in which
+    case the provisions of the GPL are applicable instead of the
+    above.  If you wish to allow the use of your version of this file
+    only under the terms of the GPL and not to allow others to use
+    your version of this file under the MPL, indicate your decision
+    by deleting the provisions above and replace them with the notice
+    and other provisions required by the GPL.  If you do not delete
+    the provisions above, a recipient may use your version of this
+    file under either the MPL or the GPL.
+
+======================================================================*/
+
+/*
+   The event() function is this driver's Card Services event handler.
+   It will be called by Card Services when an appropriate card status
+   event is received.  The config() and release() entry points are
+   used to configure or release a socket, in response to card
+   insertion and ejection events.
+
+   Kernel version 2.6.16 upwards uses suspend() and resume() functions
+   instead of an event() function.
+*/
+
+static void daqp_cs_config(struct pcmcia_device *link);
+static void daqp_cs_release(struct pcmcia_device *link);
+static int daqp_cs_suspend(struct pcmcia_device *p_dev);
+static int daqp_cs_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 daqp_cs_attach(struct pcmcia_device *);
+static void daqp_cs_detach(struct pcmcia_device *);
+
+/*
+   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 const dev_info_t dev_info = "quatech_daqp_cs";
+
+/*======================================================================
+
+    daqp_cs_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 daqp_cs_attach(struct pcmcia_device *link)
+{
+	local_info_t *local;
+	int i;
+
+	DEBUG(0, "daqp_cs_attach()\n");
+
+	for (i = 0; i < MAX_DEV; i++)
+		if (dev_table[i] == NULL)
+			break;
+	if (i == MAX_DEV) {
+		printk(KERN_NOTICE "daqp_cs: no devices available\n");
+		return -ENODEV;
+	}
+
+	/* Allocate space for private device-specific data */
+	local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
+	if (!local)
+		return -ENOMEM;
+
+	local->table_index = i;
+	dev_table[i] = local;
+	local->link = link;
+	link->priv = local;
+
+	/* Interrupt setup */
+	link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
+	link->irq.IRQInfo1 = IRQ_LEVEL_ID;
+	link->irq.Handler = daqp_interrupt;
+	link->irq.Instance = local;
+
+	/*
+	   General socket configuration defaults can go here.  In this
+	   client, we assume very little, and rely on the CIS for almost
+	   everything.  In most clients, many details (i.e., number, sizes,
+	   and attributes of IO windows) are fixed by the nature of the
+	   device, and can be hard-wired here.
+	 */
+	link->conf.Attributes = 0;
+	link->conf.IntType = INT_MEMORY_AND_IO;
+
+	daqp_cs_config(link);
+
+	return 0;
+}				/* daqp_cs_attach */
+
+/*======================================================================
+
+    This deletes a driver "instance".  The device is de-registered
+    with Card Services.  If it has been released, all local data
+    structures are freed.  Otherwise, the structures will be freed
+    when the device is released.
+
+======================================================================*/
+
+static void daqp_cs_detach(struct pcmcia_device *link)
+{
+	local_info_t *dev = link->priv;
+
+	DEBUG(0, "daqp_cs_detach(0x%p)\n", link);
+
+	if (link->dev_node) {
+		dev->stop = 1;
+		daqp_cs_release(link);
+	}
+
+	/* Unlink device structure, and free it */
+	dev_table[dev->table_index] = NULL;
+	if (dev)
+		kfree(dev);
+
+}				/* daqp_cs_detach */
+
+/*======================================================================
+
+    daqp_cs_config() is scheduled to run after a CARD_INSERTION event
+    is received, to configure the PCMCIA socket, and to make the
+    device available to the system.
+
+======================================================================*/
+
+static void daqp_cs_config(struct pcmcia_device *link)
+{
+	local_info_t *dev = link->priv;
+	tuple_t tuple;
+	cisparse_t parse;
+	int last_ret;
+	u_char buf[64];
+
+	DEBUG(0, "daqp_cs_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;
+	if ((last_ret = pcmcia_get_first_tuple(link, &tuple))) {
+		cs_error(link, GetFirstTuple, last_ret);
+		goto cs_failed;
+	}
+	if ((last_ret = pcmcia_get_tuple_data(link, &tuple))) {
+		cs_error(link, GetTupleData, last_ret);
+		goto cs_failed;
+	}
+	if ((last_ret = pcmcia_parse_tuple(&tuple, &parse))) {
+		cs_error(link, ParseTuple, last_ret);
+		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;
+	if ((last_ret = pcmcia_get_first_tuple(link, &tuple))) {
+		cs_error(link, GetFirstTuple, last_ret);
+		goto cs_failed;
+	}
+	while (1) {
+		cistpl_cftable_entry_t dflt = { 0 };
+		cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
+		if (pcmcia_get_tuple_data(link, &tuple))
+			goto next_entry;
+		if (pcmcia_parse_tuple(&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;
+
+		/* 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:
+		if ((last_ret = pcmcia_get_next_tuple(link, &tuple))) {
+			cs_error(link, GetNextTuple, last_ret);
+			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)
+		if ((last_ret = pcmcia_request_irq(link, &link->irq))) {
+			cs_error(link, RequestIRQ, last_ret);
+			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.
+	 */
+	if ((last_ret = pcmcia_request_configuration(link, &link->conf))) {
+		cs_error(link, RequestConfiguration, last_ret);
+		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.
+	 */
+	/* Comedi's PCMCIA script uses this device name (extracted
+	 * from /var/lib/pcmcia/stab) to pass to comedi_config
+	 */
+	/* sprintf(dev->node.dev_name, "daqp%d", dev->table_index); */
+	sprintf(dev->node.dev_name, "quatech_daqp_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:
+	daqp_cs_release(link);
+
+}				/* daqp_cs_config */
+
+static void daqp_cs_release(struct pcmcia_device *link)
+{
+	DEBUG(0, "daqp_cs_release(0x%p)\n", link);
+
+	pcmcia_disable_device(link);
+}				/* daqp_cs_release */
+
+/*======================================================================
+
+    The card status event handler.  Mostly, this schedules other
+    stuff to run after an event is received.
+
+    When a CARD_REMOVAL event is received, we immediately set a
+    private flag to block future accesses to this device.  All the
+    functions that actually access the device should check this flag
+    to make sure the card is still present.
+
+======================================================================*/
+
+static int daqp_cs_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;
+}
+
+static int daqp_cs_resume(struct pcmcia_device *link)
+{
+	local_info_t *local = link->priv;
+
+	local->stop = 0;
+
+	return 0;
+}
+
+/*====================================================================*/
+
+#ifdef MODULE
+
+static struct pcmcia_device_id daqp_cs_id_table[] = {
+	PCMCIA_DEVICE_MANF_CARD(0x0137, 0x0027),
+	PCMCIA_DEVICE_NULL
+};
+
+MODULE_DEVICE_TABLE(pcmcia, daqp_cs_id_table);
+
+struct pcmcia_driver daqp_cs_driver = {
+	.probe = daqp_cs_attach,
+	.remove = daqp_cs_detach,
+	.suspend = daqp_cs_suspend,
+	.resume = daqp_cs_resume,
+	.id_table = daqp_cs_id_table,
+	.owner = THIS_MODULE,
+	.drv = {
+			.name = dev_info,
+		},
+};
+
+int __init init_module(void)
+{
+	DEBUG(0, "%s\n", version);
+	pcmcia_register_driver(&daqp_cs_driver);
+	comedi_driver_register(&driver_daqp);
+	return 0;
+}
+
+void __exit cleanup_module(void)
+{
+	DEBUG(0, "daqp_cs: unloading\n");
+	comedi_driver_unregister(&driver_daqp);
+	pcmcia_unregister_driver(&daqp_cs_driver);
+}
+
+#endif