[linux-2.6-block.git] / drivers / staging / comedi / drivers / ni_6527.c

/*
    comedi/drivers/ni_6527.c
    driver for National Instruments PCI-6527

    COMEDI - Linux Control and Measurement Device Interface
    Copyright (C) 1999,2002,2003 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: ni_6527
Description: National Instruments 6527
Author: ds
Status: works
Devices: [National Instruments] PCI-6527 (ni6527), PXI-6527
Updated: Sat, 25 Jan 2003 13:24:40 -0800


*/

/*
   Manuals (available from ftp://ftp.natinst.com/support/manuals)

	370106b.pdf	6527 Register Level Programmer Manual

 */

#define DEBUG 1
#define DEBUG_FLAGS

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

#include "mite.h"

#define NI6527_DIO_SIZE 4096
#define NI6527_MITE_SIZE 4096

#define Port_Register(x)			(0x00+(x))
#define ID_Register				0x06

#define Clear_Register				0x07
#define ClrEdge				0x08
#define ClrOverflow			0x04
#define ClrFilter			0x02
#define ClrInterval			0x01

#define Filter_Interval(x)			(0x08+(x))
#define Filter_Enable(x)			(0x0c+(x))

#define Change_Status				0x14
#define MasterInterruptStatus		0x04
#define Overflow			0x02
#define EdgeStatus			0x01

#define Master_Interrupt_Control		0x15
#define FallingEdgeIntEnable		0x10
#define RisingEdgeIntEnable		0x08
#define MasterInterruptEnable		0x04
#define OverflowIntEnable		0x02
#define EdgeIntEnable			0x01

#define Rising_Edge_Detection_Enable(x)		(0x018+(x))
#define Falling_Edge_Detection_Enable(x)	(0x020+(x))

static int ni6527_attach(struct comedi_device *dev,
			 struct comedi_devconfig *it);
static void ni6527_detach(struct comedi_device *dev);
static struct comedi_driver driver_ni6527 = {
	.driver_name = "ni6527",
	.module = THIS_MODULE,
	.attach = ni6527_attach,
	.detach = ni6527_detach,
};

struct ni6527_board {

	int dev_id;
	const char *name;
};

static const struct ni6527_board ni6527_boards[] = {
	{
	 .dev_id = 0x2b20,
	 .name = "pci-6527",
	 },
	{
	 .dev_id = 0x2b10,
	 .name = "pxi-6527",
	 },
};

#define n_ni6527_boards ARRAY_SIZE(ni6527_boards)
#define this_board ((const struct ni6527_board *)dev->board_ptr)

static DEFINE_PCI_DEVICE_TABLE(ni6527_pci_table) = {
	{PCI_DEVICE(PCI_VENDOR_ID_NI, 0x2b10)},
	{PCI_DEVICE(PCI_VENDOR_ID_NI, 0x2b20)},
	{0}
};

MODULE_DEVICE_TABLE(pci, ni6527_pci_table);

struct ni6527_private {
	struct mite_struct *mite;
	unsigned int filter_interval;
	unsigned int filter_enable;
};

#define devpriv ((struct ni6527_private *)dev->private)

static int ni6527_find_device(struct comedi_device *dev, int bus, int slot);

static int ni6527_di_insn_config(struct comedi_device *dev,
				 struct comedi_subdevice *s,
				 struct comedi_insn *insn, unsigned int *data)
{
	int chan = CR_CHAN(insn->chanspec);
	unsigned int interval;

	if (insn->n != 2)
		return -EINVAL;

	if (data[0] != INSN_CONFIG_FILTER)
		return -EINVAL;

	if (data[1]) {
		interval = (data[1] + 100) / 200;
		data[1] = interval * 200;

		if (interval != devpriv->filter_interval) {
			writeb(interval & 0xff,
			       devpriv->mite->daq_io_addr + Filter_Interval(0));
			writeb((interval >> 8) & 0xff,
			       devpriv->mite->daq_io_addr + Filter_Interval(1));
			writeb((interval >> 16) & 0x0f,
			       devpriv->mite->daq_io_addr + Filter_Interval(2));

			writeb(ClrInterval,
			       devpriv->mite->daq_io_addr + Clear_Register);

			devpriv->filter_interval = interval;
		}

		devpriv->filter_enable |= 1 << chan;
	} else {
		devpriv->filter_enable &= ~(1 << chan);
	}

	writeb(devpriv->filter_enable,
	       devpriv->mite->daq_io_addr + Filter_Enable(0));
	writeb(devpriv->filter_enable >> 8,
	       devpriv->mite->daq_io_addr + Filter_Enable(1));
	writeb(devpriv->filter_enable >> 16,
	       devpriv->mite->daq_io_addr + Filter_Enable(2));

	return 2;
}

static int ni6527_di_insn_bits(struct comedi_device *dev,
			       struct comedi_subdevice *s,
			       struct comedi_insn *insn, unsigned int *data)
{
	data[1] = readb(devpriv->mite->daq_io_addr + Port_Register(0));
	data[1] |= readb(devpriv->mite->daq_io_addr + Port_Register(1)) << 8;
	data[1] |= readb(devpriv->mite->daq_io_addr + Port_Register(2)) << 16;

	return insn->n;
}

static int ni6527_do_insn_bits(struct comedi_device *dev,
			       struct comedi_subdevice *s,
			       struct comedi_insn *insn, unsigned int *data)
{
	if (data[0]) {
		s->state &= ~data[0];
		s->state |= (data[0] & data[1]);

		/* The open relay state on the board cooresponds to 1,
		 * but in Comedi, it is represented by 0. */
		if (data[0] & 0x0000ff) {
			writeb((s->state ^ 0xff),
			       devpriv->mite->daq_io_addr + Port_Register(3));
		}
		if (data[0] & 0x00ff00) {
			writeb((s->state >> 8) ^ 0xff,
			       devpriv->mite->daq_io_addr + Port_Register(4));
		}
		if (data[0] & 0xff0000) {
			writeb((s->state >> 16) ^ 0xff,
			       devpriv->mite->daq_io_addr + Port_Register(5));
		}
	}
	data[1] = s->state;

	return insn->n;
}

static irqreturn_t ni6527_interrupt(int irq, void *d)
{
	struct comedi_device *dev = d;
	struct comedi_subdevice *s = &dev->subdevices[2];
	unsigned int status;

	status = readb(devpriv->mite->daq_io_addr + Change_Status);
	if ((status & MasterInterruptStatus) == 0)
		return IRQ_NONE;
	if ((status & EdgeStatus) == 0)
		return IRQ_NONE;

	writeb(ClrEdge | ClrOverflow,
	       devpriv->mite->daq_io_addr + Clear_Register);

	comedi_buf_put(s->async, 0);
	s->async->events |= COMEDI_CB_EOS;
	comedi_event(dev, s);
	return IRQ_HANDLED;
}

static int ni6527_intr_cmdtest(struct comedi_device *dev,
			       struct comedi_subdevice *s,
			       struct 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_OTHER;
	if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src)
		err++;

	tmp = cmd->convert_src;
	cmd->convert_src &= TRIG_FOLLOW;
	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;
	if (!cmd->stop_src || tmp != cmd->stop_src)
		err++;

	if (err)
		return 1;

	/* step 2: make sure trigger sources are unique and */
	/*         are mutually compatible */

	if (err)
		return 2;

	/* step 3: make sure arguments are trivially compatible */

	if (cmd->start_arg != 0) {
		cmd->start_arg = 0;
		err++;
	}
	if (cmd->scan_begin_arg != 0) {
		cmd->scan_begin_arg = 0;
		err++;
	}
	if (cmd->convert_arg != 0) {
		cmd->convert_arg = 0;
		err++;
	}

	if (cmd->scan_end_arg != 1) {
		cmd->scan_end_arg = 1;
		err++;
	}
	if (cmd->stop_arg != 0) {
		cmd->stop_arg = 0;
		err++;
	}

	if (err)
		return 3;

	/* step 4: fix up any arguments */

	if (err)
		return 4;

	return 0;
}

static int ni6527_intr_cmd(struct comedi_device *dev,
			   struct comedi_subdevice *s)
{
	/* struct comedi_cmd *cmd = &s->async->cmd; */

	writeb(ClrEdge | ClrOverflow,
	       devpriv->mite->daq_io_addr + Clear_Register);
	writeb(FallingEdgeIntEnable | RisingEdgeIntEnable |
	       MasterInterruptEnable | EdgeIntEnable,
	       devpriv->mite->daq_io_addr + Master_Interrupt_Control);

	return 0;
}

static int ni6527_intr_cancel(struct comedi_device *dev,
			      struct comedi_subdevice *s)
{
	writeb(0x00, devpriv->mite->daq_io_addr + Master_Interrupt_Control);

	return 0;
}

static int ni6527_intr_insn_bits(struct comedi_device *dev,
				 struct comedi_subdevice *s,
				 struct comedi_insn *insn, unsigned int *data)
{
	data[1] = 0;
	return insn->n;
}

static int ni6527_intr_insn_config(struct comedi_device *dev,
				   struct comedi_subdevice *s,
				   struct comedi_insn *insn, unsigned int *data)
{
	if (insn->n < 1)
		return -EINVAL;
	if (data[0] != INSN_CONFIG_CHANGE_NOTIFY)
		return -EINVAL;

	writeb(data[1],
	       devpriv->mite->daq_io_addr + Rising_Edge_Detection_Enable(0));
	writeb(data[1] >> 8,
	       devpriv->mite->daq_io_addr + Rising_Edge_Detection_Enable(1));
	writeb(data[1] >> 16,
	       devpriv->mite->daq_io_addr + Rising_Edge_Detection_Enable(2));

	writeb(data[2],
	       devpriv->mite->daq_io_addr + Falling_Edge_Detection_Enable(0));
	writeb(data[2] >> 8,
	       devpriv->mite->daq_io_addr + Falling_Edge_Detection_Enable(1));
	writeb(data[2] >> 16,
	       devpriv->mite->daq_io_addr + Falling_Edge_Detection_Enable(2));

	return 2;
}

static int ni6527_attach(struct comedi_device *dev, struct comedi_devconfig *it)
{
	struct comedi_subdevice *s;
	int ret;

	printk(KERN_INFO "comedi%d: ni6527\n", dev->minor);

	ret = alloc_private(dev, sizeof(struct ni6527_private));
	if (ret < 0)
		return ret;

	ret = ni6527_find_device(dev, it->options[0], it->options[1]);
	if (ret < 0)
		return ret;

	ret = mite_setup(devpriv->mite);
	if (ret < 0) {
		printk(KERN_ERR "comedi: error setting up mite\n");
		return ret;
	}

	dev->board_name = this_board->name;
	printk(KERN_INFO "comedi board: %s, ID=0x%02x\n", dev->board_name,
		readb(devpriv->mite->daq_io_addr + ID_Register));

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

	s = &dev->subdevices[0];
	s->type = COMEDI_SUBD_DI;
	s->subdev_flags = SDF_READABLE;
	s->n_chan = 24;
	s->range_table = &range_digital;
	s->maxdata = 1;
	s->insn_config = ni6527_di_insn_config;
	s->insn_bits = ni6527_di_insn_bits;

	s = &dev->subdevices[1];
	s->type = COMEDI_SUBD_DO;
	s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
	s->n_chan = 24;
	s->range_table = &range_unknown;  /* FIXME: actually conductance */
	s->maxdata = 1;
	s->insn_bits = ni6527_do_insn_bits;

	s = &dev->subdevices[2];
	dev->read_subdev = s;
	s->type = COMEDI_SUBD_DI;
	s->subdev_flags = SDF_READABLE | SDF_CMD_READ;
	s->n_chan = 1;
	s->range_table = &range_unknown;
	s->maxdata = 1;
	s->do_cmdtest = ni6527_intr_cmdtest;
	s->do_cmd = ni6527_intr_cmd;
	s->cancel = ni6527_intr_cancel;
	s->insn_bits = ni6527_intr_insn_bits;
	s->insn_config = ni6527_intr_insn_config;

	writeb(0x00, devpriv->mite->daq_io_addr + Filter_Enable(0));
	writeb(0x00, devpriv->mite->daq_io_addr + Filter_Enable(1));
	writeb(0x00, devpriv->mite->daq_io_addr + Filter_Enable(2));

	writeb(ClrEdge | ClrOverflow | ClrFilter | ClrInterval,
	       devpriv->mite->daq_io_addr + Clear_Register);
	writeb(0x00, devpriv->mite->daq_io_addr + Master_Interrupt_Control);

	ret = request_irq(mite_irq(devpriv->mite), ni6527_interrupt,
			  IRQF_SHARED, "ni6527", dev);
	if (ret < 0)
		printk(KERN_WARNING "comedi i6527 irq not available\n");
	else
		dev->irq = mite_irq(devpriv->mite);

	return 0;
}

static void ni6527_detach(struct comedi_device *dev)
{
	if (devpriv && devpriv->mite && devpriv->mite->daq_io_addr)
		writeb(0x00,
		       devpriv->mite->daq_io_addr + Master_Interrupt_Control);
	if (dev->irq)
		free_irq(dev->irq, dev);
	if (devpriv && devpriv->mite)
		mite_unsetup(devpriv->mite);
}

static int ni6527_find_device(struct comedi_device *dev, int bus, int slot)
{
	struct mite_struct *mite;
	int i;

	for (mite = mite_devices; mite; mite = mite->next) {
		if (mite->used)
			continue;
		if (bus || slot) {
			if (bus != mite->pcidev->bus->number ||
			    slot != PCI_SLOT(mite->pcidev->devfn))
				continue;
		}
		for (i = 0; i < n_ni6527_boards; i++) {
			if (mite_device_id(mite) == ni6527_boards[i].dev_id) {
				dev->board_ptr = ni6527_boards + i;
				devpriv->mite = mite;
				return 0;
			}
		}
	}
	printk(KERN_ERR "comedi 6527: no device found\n");
	mite_list_devices();
	return -EIO;
}

static int __devinit driver_ni6527_pci_probe(struct pci_dev *dev,
					     const struct pci_device_id *ent)
{
	return comedi_pci_auto_config(dev, &driver_ni6527);
}

static void __devexit driver_ni6527_pci_remove(struct pci_dev *dev)
{
	comedi_pci_auto_unconfig(dev);
}

static struct pci_driver driver_ni6527_pci_driver = {
	.id_table = ni6527_pci_table,
	.probe = &driver_ni6527_pci_probe,
	.remove = __devexit_p(&driver_ni6527_pci_remove)
};

static int __init driver_ni6527_init_module(void)
{
	int retval;

	retval = comedi_driver_register(&driver_ni6527);
	if (retval < 0)
		return retval;

	driver_ni6527_pci_driver.name = (char *)driver_ni6527.driver_name;
	return pci_register_driver(&driver_ni6527_pci_driver);
}

static void __exit driver_ni6527_cleanup_module(void)
{
	pci_unregister_driver(&driver_ni6527_pci_driver);
	comedi_driver_unregister(&driver_ni6527);
}

module_init(driver_ni6527_init_module);
module_exit(driver_ni6527_cleanup_module);

MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_DESCRIPTION("Comedi low-level driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
ef2ccffb DS	1	/*
	2	comedi/drivers/ni_6527.c
	3	driver for National Instruments PCI-6527
	4
	5	COMEDI - Linux Control and Measurement Device Interface
	6	Copyright (C) 1999,2002,2003 David A. Schleef <ds@schleef.org>
	7
	8	This program is free software; you can redistribute it and/or modify
	9	it under the terms of the GNU General Public License as published by
	10	the Free Software Foundation; either version 2 of the License, or
	11	(at your option) any later version.
	12
	13	This program is distributed in the hope that it will be useful,
	14	but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	GNU General Public License for more details.
	17
	18	You should have received a copy of the GNU General Public License
	19	along with this program; if not, write to the Free Software
	20	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	21
	22	*/
	23	/*
	24	Driver: ni_6527
	25	Description: National Instruments 6527
	26	Author: ds
	27	Status: works
	28	Devices: [National Instruments] PCI-6527 (ni6527), PXI-6527
	29	Updated: Sat, 25 Jan 2003 13:24:40 -0800
	30
	31
	32	*/
	33
	34	/*
	35	Manuals (available from ftp://ftp.natinst.com/support/manuals)
	36
	37	370106b.pdf 6527 Register Level Programmer Manual
	38
	39	*/
	40
	41	#define DEBUG 1
	42	#define DEBUG_FLAGS
	43
25436dc9	44	#include <linux/interrupt.h>
ef2ccffb DS	45	#include "../comedidev.h"
	46
	47	#include "mite.h"
	48
	49	#define NI6527_DIO_SIZE 4096
	50	#define NI6527_MITE_SIZE 4096
	51
	52	#define Port_Register(x) (0x00+(x))
	53	#define ID_Register 0x06
	54
	55	#define Clear_Register 0x07
	56	#define ClrEdge 0x08
	57	#define ClrOverflow 0x04
	58	#define ClrFilter 0x02
	59	#define ClrInterval 0x01
	60
	61	#define Filter_Interval(x) (0x08+(x))
	62	#define Filter_Enable(x) (0x0c+(x))
	63
	64	#define Change_Status 0x14
	65	#define MasterInterruptStatus 0x04
	66	#define Overflow 0x02
	67	#define EdgeStatus 0x01
	68
	69	#define Master_Interrupt_Control 0x15
	70	#define FallingEdgeIntEnable 0x10
	71	#define RisingEdgeIntEnable 0x08
	72	#define MasterInterruptEnable 0x04
	73	#define OverflowIntEnable 0x02
	74	#define EdgeIntEnable 0x01
	75
	76	#define Rising_Edge_Detection_Enable(x) (0x018+(x))
	77	#define Falling_Edge_Detection_Enable(x) (0x020+(x))
	78
0a85b6f0 MT	79	static int ni6527_attach(struct comedi_device *dev,
0a85b6f0 MT	80	struct comedi_devconfig *it);
484ecc95	81	static void ni6527_detach(struct comedi_device *dev);
139dfbdf	82	static struct comedi_driver driver_ni6527 = {
68c3dbff BP	83	.driver_name = "ni6527",
	84	.module = THIS_MODULE,
	85	.attach = ni6527_attach,
	86	.detach = ni6527_detach,
ef2ccffb DS	87	};
ef2ccffb DS	88
16d38ca3 BP	89	struct ni6527_board {
16d38ca3 BP	90
ef2ccffb DS	91	int dev_id;
ef2ccffb DS	92	const char *name;
16d38ca3 BP	93	};
	94
	95	static const struct ni6527_board ni6527_boards[] = {
ef2ccffb	96	{
0a85b6f0 MT	97	.dev_id = 0x2b20,
	98	.name = "pci-6527",
	99	},
ef2ccffb	100	{
0a85b6f0 MT	101	.dev_id = 0x2b10,
	102	.name = "pxi-6527",
	103	},
ef2ccffb DS	104	};
ef2ccffb DS	105
b6ac1613	106	#define n_ni6527_boards ARRAY_SIZE(ni6527_boards)
16d38ca3	107	#define this_board ((const struct ni6527_board *)dev->board_ptr)
ef2ccffb DS	108
ef2ccffb DS	109	static DEFINE_PCI_DEVICE_TABLE(ni6527_pci_table) = {
4e40cee9 GKH	110	{PCI_DEVICE(PCI_VENDOR_ID_NI, 0x2b10)},
	111	{PCI_DEVICE(PCI_VENDOR_ID_NI, 0x2b20)},
	112	{0}
ef2ccffb DS	113	};
	114
	115	MODULE_DEVICE_TABLE(pci, ni6527_pci_table);
	116
f4c6b319	117	struct ni6527_private {
ef2ccffb DS	118	struct mite_struct *mite;
	119	unsigned int filter_interval;
	120	unsigned int filter_enable;
f4c6b319 BP	121	};
	122
	123	#define devpriv ((struct ni6527_private *)dev->private)
ef2ccffb	124
da91b269	125	static int ni6527_find_device(struct comedi_device *dev, int bus, int slot);
ef2ccffb	126
0a85b6f0 MT	127	static int ni6527_di_insn_config(struct comedi_device *dev,
	128	struct comedi_subdevice *s,
	129	struct comedi_insn insn, unsigned int data)
ef2ccffb DS	130	{
	131	int chan = CR_CHAN(insn->chanspec);
	132	unsigned int interval;
	133
	134	if (insn->n != 2)
	135	return -EINVAL;
	136
	137	if (data[0] != INSN_CONFIG_FILTER)
	138	return -EINVAL;
	139
	140	if (data[1]) {
	141	interval = (data[1] + 100) / 200;
	142	data[1] = interval * 200;
	143
	144	if (interval != devpriv->filter_interval) {
	145	writeb(interval & 0xff,
0a85b6f0	146	devpriv->mite->daq_io_addr + Filter_Interval(0));
ef2ccffb	147	writeb((interval >> 8) & 0xff,
0a85b6f0	148	devpriv->mite->daq_io_addr + Filter_Interval(1));
ef2ccffb	149	writeb((interval >> 16) & 0x0f,
0a85b6f0	150	devpriv->mite->daq_io_addr + Filter_Interval(2));
ef2ccffb DS	151
ef2ccffb DS	152	writeb(ClrInterval,
0a85b6f0	153	devpriv->mite->daq_io_addr + Clear_Register);
ef2ccffb DS	154
	155	devpriv->filter_interval = interval;
	156	}
	157
	158	devpriv->filter_enable \|= 1 << chan;
	159	} else {
	160	devpriv->filter_enable &= ~(1 << chan);
	161	}
	162
	163	writeb(devpriv->filter_enable,
0a85b6f0	164	devpriv->mite->daq_io_addr + Filter_Enable(0));
ef2ccffb	165	writeb(devpriv->filter_enable >> 8,
0a85b6f0	166	devpriv->mite->daq_io_addr + Filter_Enable(1));
ef2ccffb	167	writeb(devpriv->filter_enable >> 16,
0a85b6f0	168	devpriv->mite->daq_io_addr + Filter_Enable(2));
ef2ccffb DS	169
	170	return 2;
	171	}
	172
0a85b6f0 MT	173	static int ni6527_di_insn_bits(struct comedi_device *dev,
	174	struct comedi_subdevice *s,
	175	struct comedi_insn insn, unsigned int data)
ef2ccffb	176	{
ef2ccffb DS	177	data[1] = readb(devpriv->mite->daq_io_addr + Port_Register(0));
	178	data[1] \|= readb(devpriv->mite->daq_io_addr + Port_Register(1)) << 8;
	179	data[1] \|= readb(devpriv->mite->daq_io_addr + Port_Register(2)) << 16;
	180
a2714e3e	181	return insn->n;
ef2ccffb DS	182	}
ef2ccffb DS	183
0a85b6f0 MT	184	static int ni6527_do_insn_bits(struct comedi_device *dev,
	185	struct comedi_subdevice *s,
	186	struct comedi_insn insn, unsigned int data)
ef2ccffb	187	{
ef2ccffb DS	188	if (data[0]) {
	189	s->state &= ~data[0];
	190	s->state \|= (data[0] & data[1]);
	191
	192	/* The open relay state on the board cooresponds to 1,
	193	* but in Comedi, it is represented by 0. */
	194	if (data[0] & 0x0000ff) {
	195	writeb((s->state ^ 0xff),
0a85b6f0	196	devpriv->mite->daq_io_addr + Port_Register(3));
ef2ccffb DS	197	}
	198	if (data[0] & 0x00ff00) {
	199	writeb((s->state >> 8) ^ 0xff,
0a85b6f0	200	devpriv->mite->daq_io_addr + Port_Register(4));
ef2ccffb DS	201	}
	202	if (data[0] & 0xff0000) {
	203	writeb((s->state >> 16) ^ 0xff,
0a85b6f0	204	devpriv->mite->daq_io_addr + Port_Register(5));
ef2ccffb DS	205	}
	206	}
	207	data[1] = s->state;
	208
a2714e3e	209	return insn->n;
ef2ccffb DS	210	}
ef2ccffb DS	211
70265d24	212	static irqreturn_t ni6527_interrupt(int irq, void *d)
ef2ccffb	213	{
71b5f4f1	214	struct comedi_device *dev = d;
3d30dca5	215	struct comedi_subdevice *s = &dev->subdevices[2];
ef2ccffb DS	216	unsigned int status;
	217
	218	status = readb(devpriv->mite->daq_io_addr + Change_Status);
	219	if ((status & MasterInterruptStatus) == 0)
	220	return IRQ_NONE;
	221	if ((status & EdgeStatus) == 0)
	222	return IRQ_NONE;
	223
	224	writeb(ClrEdge \| ClrOverflow,
0a85b6f0	225	devpriv->mite->daq_io_addr + Clear_Register);
ef2ccffb DS	226
	227	comedi_buf_put(s->async, 0);
	228	s->async->events \|= COMEDI_CB_EOS;
	229	comedi_event(dev, s);
	230	return IRQ_HANDLED;
	231	}
	232
0a85b6f0 MT	233	static int ni6527_intr_cmdtest(struct comedi_device *dev,
	234	struct comedi_subdevice *s,
	235	struct comedi_cmd *cmd)
ef2ccffb DS	236	{
	237	int err = 0;
	238	int tmp;
	239
	240	/* step 1: make sure trigger sources are trivially valid */
	241
	242	tmp = cmd->start_src;
	243	cmd->start_src &= TRIG_NOW;
	244	if (!cmd->start_src \|\| tmp != cmd->start_src)
	245	err++;
	246
	247	tmp = cmd->scan_begin_src;
	248	cmd->scan_begin_src &= TRIG_OTHER;
	249	if (!cmd->scan_begin_src \|\| tmp != cmd->scan_begin_src)
	250	err++;
	251
	252	tmp = cmd->convert_src;
	253	cmd->convert_src &= TRIG_FOLLOW;
	254	if (!cmd->convert_src \|\| tmp != cmd->convert_src)
	255	err++;
	256
	257	tmp = cmd->scan_end_src;
	258	cmd->scan_end_src &= TRIG_COUNT;
	259	if (!cmd->scan_end_src \|\| tmp != cmd->scan_end_src)
	260	err++;
	261
	262	tmp = cmd->stop_src;
	263	cmd->stop_src &= TRIG_COUNT;
	264	if (!cmd->stop_src \|\| tmp != cmd->stop_src)
	265	err++;
	266
	267	if (err)
	268	return 1;
	269
a8c5c198 KG	270	/* step 2: make sure trigger sources are unique and */
a8c5c198 KG	271	/* are mutually compatible */
ef2ccffb DS	272
	273	if (err)
	274	return 2;
	275
	276	/* step 3: make sure arguments are trivially compatible */
	277
	278	if (cmd->start_arg != 0) {
	279	cmd->start_arg = 0;
	280	err++;
	281	}
	282	if (cmd->scan_begin_arg != 0) {
	283	cmd->scan_begin_arg = 0;
	284	err++;
	285	}
	286	if (cmd->convert_arg != 0) {
	287	cmd->convert_arg = 0;
	288	err++;
	289	}
	290
	291	if (cmd->scan_end_arg != 1) {
	292	cmd->scan_end_arg = 1;
	293	err++;
	294	}
	295	if (cmd->stop_arg != 0) {
	296	cmd->stop_arg = 0;
	297	err++;
	298	}
	299
	300	if (err)
	301	return 3;
	302
	303	/* step 4: fix up any arguments */
	304
	305	if (err)
	306	return 4;
	307
	308	return 0;
	309	}
	310
0a85b6f0 MT	311	static int ni6527_intr_cmd(struct comedi_device *dev,
0a85b6f0 MT	312	struct comedi_subdevice *s)
ef2ccffb	313	{
2696fb57	314	/* struct comedi_cmd cmd = &s->async->cmd; /
ef2ccffb DS	315
ef2ccffb DS	316	writeb(ClrEdge \| ClrOverflow,
0a85b6f0	317	devpriv->mite->daq_io_addr + Clear_Register);
ef2ccffb	318	writeb(FallingEdgeIntEnable \| RisingEdgeIntEnable \|
0a85b6f0 MT	319	MasterInterruptEnable \| EdgeIntEnable,
0a85b6f0 MT	320	devpriv->mite->daq_io_addr + Master_Interrupt_Control);
ef2ccffb DS	321
	322	return 0;
	323	}
	324
0a85b6f0 MT	325	static int ni6527_intr_cancel(struct comedi_device *dev,
0a85b6f0 MT	326	struct comedi_subdevice *s)
ef2ccffb DS	327	{
	328	writeb(0x00, devpriv->mite->daq_io_addr + Master_Interrupt_Control);
	329
	330	return 0;
	331	}
	332
0a85b6f0 MT	333	static int ni6527_intr_insn_bits(struct comedi_device *dev,
	334	struct comedi_subdevice *s,
	335	struct comedi_insn insn, unsigned int data)
ef2ccffb	336	{
ef2ccffb	337	data[1] = 0;
a2714e3e	338	return insn->n;
ef2ccffb DS	339	}
ef2ccffb DS	340
0a85b6f0 MT	341	static int ni6527_intr_insn_config(struct comedi_device *dev,
	342	struct comedi_subdevice *s,
	343	struct comedi_insn insn, unsigned int data)
ef2ccffb DS	344	{
	345	if (insn->n < 1)
	346	return -EINVAL;
	347	if (data[0] != INSN_CONFIG_CHANGE_NOTIFY)
	348	return -EINVAL;
	349
	350	writeb(data[1],
0a85b6f0	351	devpriv->mite->daq_io_addr + Rising_Edge_Detection_Enable(0));
ef2ccffb	352	writeb(data[1] >> 8,
0a85b6f0	353	devpriv->mite->daq_io_addr + Rising_Edge_Detection_Enable(1));
ef2ccffb	354	writeb(data[1] >> 16,
0a85b6f0	355	devpriv->mite->daq_io_addr + Rising_Edge_Detection_Enable(2));
ef2ccffb DS	356
ef2ccffb DS	357	writeb(data[2],
0a85b6f0	358	devpriv->mite->daq_io_addr + Falling_Edge_Detection_Enable(0));
ef2ccffb	359	writeb(data[2] >> 8,
0a85b6f0	360	devpriv->mite->daq_io_addr + Falling_Edge_Detection_Enable(1));
ef2ccffb	361	writeb(data[2] >> 16,
0a85b6f0	362	devpriv->mite->daq_io_addr + Falling_Edge_Detection_Enable(2));
ef2ccffb DS	363
	364	return 2;
	365	}
	366
da91b269	367	static int ni6527_attach(struct comedi_device dev, struct comedi_devconfig it)
ef2ccffb	368	{
34c43922	369	struct comedi_subdevice *s;
ef2ccffb DS	370	int ret;
ef2ccffb DS	371
a8c5c198	372	printk(KERN_INFO "comedi%d: ni6527\n", dev->minor);
ef2ccffb	373
c3744138 BP	374	ret = alloc_private(dev, sizeof(struct ni6527_private));
c3744138 BP	375	if (ret < 0)
ef2ccffb DS	376	return ret;
	377
	378	ret = ni6527_find_device(dev, it->options[0], it->options[1]);
	379	if (ret < 0)
	380	return ret;
	381
	382	ret = mite_setup(devpriv->mite);
	383	if (ret < 0) {
a8c5c198	384	printk(KERN_ERR "comedi: error setting up mite\n");
ef2ccffb DS	385	return ret;
	386	}
	387
	388	dev->board_name = this_board->name;
a8c5c198 KG	389	printk(KERN_INFO "comedi board: %s, ID=0x%02x\n", dev->board_name,
a8c5c198 KG	390	readb(devpriv->mite->daq_io_addr + ID_Register));
ef2ccffb	391
2f0b9d08	392	ret = comedi_alloc_subdevices(dev, 3);
8b6c5694	393	if (ret)
ef2ccffb DS	394	return ret;
ef2ccffb DS	395
3d30dca5	396	s = &dev->subdevices[0];
ef2ccffb DS	397	s->type = COMEDI_SUBD_DI;
	398	s->subdev_flags = SDF_READABLE;
	399	s->n_chan = 24;
	400	s->range_table = &range_digital;
	401	s->maxdata = 1;
	402	s->insn_config = ni6527_di_insn_config;
	403	s->insn_bits = ni6527_di_insn_bits;
	404
3d30dca5	405	s = &dev->subdevices[1];
ef2ccffb DS	406	s->type = COMEDI_SUBD_DO;
	407	s->subdev_flags = SDF_READABLE \| SDF_WRITABLE;
	408	s->n_chan = 24;
a8c5c198	409	s->range_table = &range_unknown; /* FIXME: actually conductance */
ef2ccffb DS	410	s->maxdata = 1;
	411	s->insn_bits = ni6527_do_insn_bits;
	412
3d30dca5	413	s = &dev->subdevices[2];
ef2ccffb DS	414	dev->read_subdev = s;
	415	s->type = COMEDI_SUBD_DI;
	416	s->subdev_flags = SDF_READABLE \| SDF_CMD_READ;
	417	s->n_chan = 1;
	418	s->range_table = &range_unknown;
	419	s->maxdata = 1;
	420	s->do_cmdtest = ni6527_intr_cmdtest;
	421	s->do_cmd = ni6527_intr_cmd;
	422	s->cancel = ni6527_intr_cancel;
	423	s->insn_bits = ni6527_intr_insn_bits;
	424	s->insn_config = ni6527_intr_insn_config;
	425
	426	writeb(0x00, devpriv->mite->daq_io_addr + Filter_Enable(0));
	427	writeb(0x00, devpriv->mite->daq_io_addr + Filter_Enable(1));
	428	writeb(0x00, devpriv->mite->daq_io_addr + Filter_Enable(2));
	429
	430	writeb(ClrEdge \| ClrOverflow \| ClrFilter \| ClrInterval,
0a85b6f0	431	devpriv->mite->daq_io_addr + Clear_Register);
ef2ccffb DS	432	writeb(0x00, devpriv->mite->daq_io_addr + Master_Interrupt_Control);
ef2ccffb DS	433
5f74ea14 GKH	434	ret = request_irq(mite_irq(devpriv->mite), ni6527_interrupt,
5f74ea14 GKH	435	IRQF_SHARED, "ni6527", dev);
a8c5c198 KG	436	if (ret < 0)
	437	printk(KERN_WARNING "comedi i6527 irq not available\n");
	438	else
ef2ccffb DS	439	dev->irq = mite_irq(devpriv->mite);
ef2ccffb DS	440
ef2ccffb DS	441	return 0;
	442	}
	443
484ecc95	444	static void ni6527_detach(struct comedi_device *dev)
ef2ccffb	445	{
a8c5c198	446	if (devpriv && devpriv->mite && devpriv->mite->daq_io_addr)
ef2ccffb	447	writeb(0x00,
0a85b6f0	448	devpriv->mite->daq_io_addr + Master_Interrupt_Control);
a8c5c198	449	if (dev->irq)
5f74ea14	450	free_irq(dev->irq, dev);
a8c5c198	451	if (devpriv && devpriv->mite)
ef2ccffb	452	mite_unsetup(devpriv->mite);
ef2ccffb DS	453	}
ef2ccffb DS	454
da91b269	455	static int ni6527_find_device(struct comedi_device *dev, int bus, int slot)
ef2ccffb DS	456	{
	457	struct mite_struct *mite;
	458	int i;
	459
	460	for (mite = mite_devices; mite; mite = mite->next) {
	461	if (mite->used)
	462	continue;
	463	if (bus \|\| slot) {
	464	if (bus != mite->pcidev->bus->number \|\|
0a85b6f0	465	slot != PCI_SLOT(mite->pcidev->devfn))
ef2ccffb DS	466	continue;
	467	}
	468	for (i = 0; i < n_ni6527_boards; i++) {
	469	if (mite_device_id(mite) == ni6527_boards[i].dev_id) {
	470	dev->board_ptr = ni6527_boards + i;
	471	devpriv->mite = mite;
	472	return 0;
	473	}
	474	}
	475	}
a8c5c198	476	printk(KERN_ERR "comedi 6527: no device found\n");
ef2ccffb DS	477	mite_list_devices();
	478	return -EIO;
	479	}
	480
727b286b AT	481	static int __devinit driver_ni6527_pci_probe(struct pci_dev *dev,
	482	const struct pci_device_id *ent)
	483	{
4c093a6d	484	return comedi_pci_auto_config(dev, &driver_ni6527);
727b286b AT	485	}
	486
	487	static void __devexit driver_ni6527_pci_remove(struct pci_dev *dev)
	488	{
	489	comedi_pci_auto_unconfig(dev);
	490	}
	491
	492	static struct pci_driver driver_ni6527_pci_driver = {
	493	.id_table = ni6527_pci_table,
	494	.probe = &driver_ni6527_pci_probe,
	495	.remove = __devexit_p(&driver_ni6527_pci_remove)
	496	};
	497
	498	static int __init driver_ni6527_init_module(void)
	499	{
	500	int retval;
	501
	502	retval = comedi_driver_register(&driver_ni6527);
	503	if (retval < 0)
	504	return retval;
	505
	506	driver_ni6527_pci_driver.name = (char *)driver_ni6527.driver_name;
	507	return pci_register_driver(&driver_ni6527_pci_driver);
	508	}
	509
	510	static void __exit driver_ni6527_cleanup_module(void)
	511	{
	512	pci_unregister_driver(&driver_ni6527_pci_driver);
	513	comedi_driver_unregister(&driver_ni6527);
	514	}
	515
	516	module_init(driver_ni6527_init_module);
	517	module_exit(driver_ni6527_cleanup_module);
3c323c01 IA	518
	519	MODULE_AUTHOR("Comedi http://www.comedi.org");
	520	MODULE_DESCRIPTION("Comedi low-level driver");
	521	MODULE_LICENSE("GPL");