Commit 3c5e1722 authored by Bart Joris's avatar Bart Joris Committed by Greg Kroah-Hartman
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Staging: comedi: add ni_670x driver 



Driver for National Instruments 670x

From: Bart Joris <bjoris@advalvas.be>
Cc: David Schleef <ds@schleef.org>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 58dd7c0a

drivers/staging/comedi/drivers/ni_670x.c

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+334 −0
Original line number Diff line number Diff line 
/*

    comedi/drivers/ni_670x.c

    Hardware driver for NI 670x devices



    COMEDI - Linux Control and Measurement Device Interface

    Copyright (C) 1997-2001 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_670x

Description: National Instruments 670x

Author: Bart Joris <bjoris@advalvas.be>

Updated: Wed, 11 Dec 2002 18:25:35 -0800

Devices: [National Instruments] PCI-6703 (ni_670x), PCI-6704

Status: unknown



Commands are not supported.

*/



/*

	Bart Joris <bjoris@advalvas.be> Last updated on 20/08/2001



	Manuals:



	322110a.pdf	PCI/PXI-6704 User Manual

	322110b.pdf	PCI/PXI-6703/6704 User Manual



*/



#include "../comedidev.h"



#include "mite.h"



#define PCI_VENDOR_ID_NATINST	0x1093



#define AO_VALUE_OFFSET			0x00

#define	AO_CHAN_OFFSET			0x0c

#define	AO_STATUS_OFFSET		0x10

#define AO_CONTROL_OFFSET		0x10

#define	DIO_PORT0_DIR_OFFSET	0x20

#define	DIO_PORT0_DATA_OFFSET	0x24

#define	DIO_PORT1_DIR_OFFSET	0x28

#define	DIO_PORT1_DATA_OFFSET	0x2c

#define	MISC_STATUS_OFFSET		0x14

#define	MISC_CONTROL_OFFSET		0x14



/* Board description*/



typedef struct ni_670x_board_struct {

	unsigned short dev_id;

	const char *name;

	unsigned short ao_chans;

	unsigned short ao_bits;

} ni_670x_board;

static const ni_670x_board ni_670x_boards[] = {

	{

	      dev_id:	0x2c90,

	      name:	"PCI-6703",

	      ao_chans:16,

	      ao_bits:	16,

		},

	{

	      dev_id:	0x1920,

	      name:	"PXI-6704",

	      ao_chans:32,

	      ao_bits:	16,

		},

	{

	      dev_id:	0x1290,

	      name:	"PCI-6704",

	      ao_chans:32,

	      ao_bits:	16,

		},

};



static DEFINE_PCI_DEVICE_TABLE(ni_670x_pci_table) = {

	{PCI_VENDOR_ID_NATINST, 0x2c90, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},

	{PCI_VENDOR_ID_NATINST, 0x1920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},

	//{ PCI_VENDOR_ID_NATINST, 0x0000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },

	{0}

};



MODULE_DEVICE_TABLE(pci, ni_670x_pci_table);



#define thisboard ((ni_670x_board *)dev->board_ptr)



typedef struct {

	struct mite_struct *mite;

	int boardtype;

	int dio;

	lsampl_t ao_readback[32];

} ni_670x_private;



#define devpriv ((ni_670x_private *)dev->private)

#define n_ni_670x_boards (sizeof(ni_670x_boards)/sizeof(ni_670x_boards[0]))



static int ni_670x_attach(comedi_device * dev, comedi_devconfig * it);

static int ni_670x_detach(comedi_device * dev);



static comedi_driver driver_ni_670x = {

      driver_name:"ni_670x",

      module:THIS_MODULE,

      attach:ni_670x_attach,

      detach:ni_670x_detach,

};



COMEDI_PCI_INITCLEANUP(driver_ni_670x, ni_670x_pci_table);



static comedi_lrange range_0_20mA = { 1, {RANGE_mA(0, 20)} };



static int ni_670x_find_device(comedi_device * dev, int bus, int slot);



static int ni_670x_ao_winsn(comedi_device * dev, comedi_subdevice * s,

	comedi_insn * insn, lsampl_t * data);

static int ni_670x_ao_rinsn(comedi_device * dev, comedi_subdevice * s,

	comedi_insn * insn, lsampl_t * data);

static int ni_670x_dio_insn_bits(comedi_device * dev, comedi_subdevice * s,

	comedi_insn * insn, lsampl_t * data);

static int ni_670x_dio_insn_config(comedi_device * dev, comedi_subdevice * s,

	comedi_insn * insn, lsampl_t * data);



static int ni_670x_attach(comedi_device * dev, comedi_devconfig * it)

{

	comedi_subdevice *s;

	int ret;

	int i;



	printk("comedi%d: ni_670x: ", dev->minor);



	if ((ret = alloc_private(dev, sizeof(ni_670x_private))) < 0)

		return ret;



	ret = ni_670x_find_device(dev, it->options[0], it->options[1]);

	if (ret < 0)

		return ret;



	ret = mite_setup(devpriv->mite);

	if (ret < 0) {

		printk("error setting up mite\n");

		return ret;

	}

	dev->board_name = thisboard->name;

	dev->irq = mite_irq(devpriv->mite);

	printk(" %s", dev->board_name);



	if (alloc_subdevices(dev, 2) < 0)

		return -ENOMEM;



	s = dev->subdevices + 0;

	/* analog output subdevice */

	s->type = COMEDI_SUBD_AO;

	s->subdev_flags = SDF_WRITABLE;

	s->n_chan = thisboard->ao_chans;

	s->maxdata = 0xffff;

	if (s->n_chan == 32) {

		const comedi_lrange **range_table_list;



		range_table_list = kmalloc(sizeof(comedi_lrange *) * 32,

			GFP_KERNEL);

		if (!range_table_list)

			return -ENOMEM;

		s->range_table_list = range_table_list;

		for (i = 0; i < 16; i++) {

			range_table_list[i] = &range_bipolar10;

			range_table_list[16 + i] = &range_0_20mA;

		}

	} else {

		s->range_table = &range_bipolar10;

	}

	s->insn_write = &ni_670x_ao_winsn;

	s->insn_read = &ni_670x_ao_rinsn;



	s = dev->subdevices + 1;

	/* digital i/o subdevice */

	s->type = COMEDI_SUBD_DIO;

	s->subdev_flags = SDF_READABLE | SDF_WRITABLE;

	s->n_chan = 8;

	s->maxdata = 1;

	s->range_table = &range_digital;

	s->insn_bits = ni_670x_dio_insn_bits;

	s->insn_config = ni_670x_dio_insn_config;



	writel(0x10, devpriv->mite->daq_io_addr + MISC_CONTROL_OFFSET);	/* Config of misc registers */

	writel(0x00, devpriv->mite->daq_io_addr + AO_CONTROL_OFFSET);	/* Config of ao registers */



	printk("attached\n");



	return 1;

}



static int ni_670x_detach(comedi_device * dev)

{

	printk("comedi%d: ni_670x: remove\n", dev->minor);



	if (dev->subdevices[0].range_table_list) {

		kfree(dev->subdevices[0].range_table_list);

	}

	if (dev->private && devpriv->mite)

		mite_unsetup(devpriv->mite);



	if (dev->irq)

		comedi_free_irq(dev->irq, dev);



	return 0;

}



static int ni_670x_ao_winsn(comedi_device * dev, comedi_subdevice * s,

	comedi_insn * insn, lsampl_t * data)

{

	int i;

	int chan = CR_CHAN(insn->chanspec);



	/* Channel number mapping :



	   NI 6703/ NI 6704     | NI 6704 Only

	   ----------------------------------------------------

	   vch(0)       :       0       | ich(16)       :       1

	   vch(1)       :       2       | ich(17)       :       3

	   .    :       .       |   .                   .

	   .    :       .       |   .                   .

	   .    :       .       |   .                   .

	   vch(15)      :       30      | ich(31)       :       31      */



	for (i = 0; i < insn->n; i++) {

		writel(((chan & 15) << 1) | ((chan & 16) >> 4), devpriv->mite->daq_io_addr + AO_CHAN_OFFSET);	/* First write in channel register which channel to use */

		writel(data[i], devpriv->mite->daq_io_addr + AO_VALUE_OFFSET);	/* write channel value */

		devpriv->ao_readback[chan] = data[i];

	}



	return i;

}



static int ni_670x_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;

}



static int ni_670x_dio_insn_bits(comedi_device * dev, comedi_subdevice * s,

	comedi_insn * insn, lsampl_t * data)

{

	if (insn->n != 2)

		return -EINVAL;



	/* The insn data is a mask in data[0] and the new data

	 * in data[1], each channel cooresponding to a bit. */

	if (data[0]) {

		s->state &= ~data[0];

		s->state |= data[0] & data[1];

		writel(s->state,

			devpriv->mite->daq_io_addr + DIO_PORT0_DATA_OFFSET);

	}



	/* on return, data[1] contains the value of the digital

	 * input lines. */

	data[1] = readl(devpriv->mite->daq_io_addr + DIO_PORT0_DATA_OFFSET);



	return 2;

}



static int ni_670x_dio_insn_config(comedi_device * dev, comedi_subdevice * s,

	comedi_insn * insn, lsampl_t * data)

{

	int chan = CR_CHAN(insn->chanspec);



	switch (data[0]) {

	case INSN_CONFIG_DIO_OUTPUT:

		s->io_bits |= 1 << chan;

		break;

	case INSN_CONFIG_DIO_INPUT:

		s->io_bits &= ~(1 << chan);

		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;

	}

	writel(s->io_bits, devpriv->mite->daq_io_addr + DIO_PORT0_DIR_OFFSET);



	return insn->n;

}



static int ni_670x_find_device(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_ni_670x_boards; i++) {

			if (mite_device_id(mite) == ni_670x_boards[i].dev_id) {

				dev->board_ptr = ni_670x_boards + i;

				devpriv->mite = mite;



				return 0;

			}

		}

	}

	printk("no device found\n");

	mite_list_devices();

	return -EIO;

}