drivers/staging/comedi/drivers/ni_670x.c - nest-hello/linux-3.10 - Git at Google

 /*
     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 <linux/pci.h>
 #include <linux/interrupt.h>
 #include <linux/slab.h>

 #include "../comedidev.h"

 #include "mite.h"

 #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

 enum ni_670x_boardid {
 	BOARD_PCI6703,
 	BOARD_PXI6704,
 	BOARD_PCI6704,
 };

 struct ni_670x_board {
 	const char *name;
 	unsigned short ao_chans;
 };

 static const struct ni_670x_board ni_670x_boards[] = {
 	[BOARD_PCI6703] = {
 		.name		= "PCI-6703",
 		.ao_chans	= 16,
 	},
 	[BOARD_PXI6704] = {
 		.name		= "PXI-6704",
 		.ao_chans	= 32,
 	},
 	[BOARD_PCI6704] = {
 		.name		= "PCI-6704",
 		.ao_chans	= 32,
 	},
 };

 struct ni_670x_private {

 	struct mite_struct *mite;
 	int boardtype;
 	int dio;
 	unsigned int ao_readback[32];
 };

 static int ni_670x_ao_winsn(struct comedi_device *dev,
 			    struct comedi_subdevice *s,
 			    struct comedi_insn *insn, unsigned int *data)
 {
 	struct ni_670x_private *devpriv = dev->private;
 	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++) {
 		/* First write in channel register which channel to use */
 		writel(((chan & 15) << 1) | ((chan & 16) >> 4),
 		       devpriv->mite->daq_io_addr + AO_CHAN_OFFSET);
 		/* write channel value */
 		writel(data[i], devpriv->mite->daq_io_addr + AO_VALUE_OFFSET);
 		devpriv->ao_readback[chan] = data[i];
 	}

 	return i;
 }

 static int ni_670x_ao_rinsn(struct comedi_device *dev,
 			    struct comedi_subdevice *s,
 			    struct comedi_insn *insn, unsigned int *data)
 {
 	struct ni_670x_private *devpriv = dev->private;
 	int i;
 	int chan = CR_CHAN(insn->chanspec);

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

 	return i;
 }

 static int ni_670x_dio_insn_bits(struct comedi_device *dev,
 				 struct comedi_subdevice *s,
 				 struct comedi_insn *insn, unsigned int *data)
 {
 	struct ni_670x_private *devpriv = dev->private;
 	void __iomem *io_addr = devpriv->mite->daq_io_addr +
 					DIO_PORT0_DATA_OFFSET;
 	unsigned int mask = data[0];
 	unsigned int bits = data[1];

 	if (mask) {
 		s->state &= ~mask;
 		s->state |= (bits & mask);

 		writel(s->state, io_addr);
 	}

 	data[1] = readl(io_addr);

 	return insn->n;
 }

 static int ni_670x_dio_insn_config(struct comedi_device *dev,
 				   struct comedi_subdevice *s,
 				   struct comedi_insn *insn, unsigned int *data)
 {
 	struct ni_670x_private *devpriv = dev->private;
 	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_auto_attach(struct comedi_device *dev,
 			       unsigned long context)
 {
 	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
 	const struct ni_670x_board *thisboard = NULL;
 	struct ni_670x_private *devpriv;
 	struct comedi_subdevice *s;
 	int ret;
 	int i;

 	if (context < ARRAY_SIZE(ni_670x_boards))
 		thisboard = &ni_670x_boards[context];
 	if (!thisboard)
 		return -ENODEV;
 	dev->board_ptr = thisboard;
 	dev->board_name = thisboard->name;

 	ret = comedi_pci_enable(dev);
 	if (ret)
 		return ret;

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

 	devpriv->mite = mite_alloc(pcidev);
 	if (!devpriv->mite)
 		return -ENOMEM;

 	ret = mite_setup(devpriv->mite);
 	if (ret < 0) {
 		dev_warn(dev->class_dev, "error setting up mite\n");
 		return ret;
 	}

 	ret = comedi_alloc_subdevices(dev, 2);
 	if (ret)
 		return ret;

 	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 struct comedi_lrange **range_table_list;

 		range_table_list = kmalloc(sizeof(struct 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;

 	/* Config of misc registers */
 	writel(0x10, devpriv->mite->daq_io_addr + MISC_CONTROL_OFFSET);
 	/* Config of ao registers */
 	writel(0x00, devpriv->mite->daq_io_addr + AO_CONTROL_OFFSET);

 	dev_info(dev->class_dev, "%s: %s attached\n",
 		dev->driver->driver_name, dev->board_name);

 	return 0;
 }

 static void ni_670x_detach(struct comedi_device *dev)
 {
 	struct ni_670x_private *devpriv = dev->private;
 	struct comedi_subdevice *s;

 	if (dev->n_subdevices) {
 		s = &dev->subdevices[0];
 		if (s)
 			kfree(s->range_table_list);
 	}
 	if (devpriv && devpriv->mite) {
 		mite_unsetup(devpriv->mite);
 		mite_free(devpriv->mite);
 	}
 	comedi_pci_disable(dev);
 }

 static struct comedi_driver ni_670x_driver = {
 	.driver_name	= "ni_670x",
 	.module		= THIS_MODULE,
 	.auto_attach	= ni_670x_auto_attach,
 	.detach		= ni_670x_detach,
 };

 static int ni_670x_pci_probe(struct pci_dev *dev,
 			     const struct pci_device_id *id)
 {
 	return comedi_pci_auto_config(dev, &ni_670x_driver, id->driver_data);
 }

 static DEFINE_PCI_DEVICE_TABLE(ni_670x_pci_table) = {
 	{ PCI_VDEVICE(NI, 0x1290), BOARD_PCI6704 },
 	{ PCI_VDEVICE(NI, 0x1920), BOARD_PXI6704 },
 	{ PCI_VDEVICE(NI, 0x2c90), BOARD_PCI6703 },
 	{ 0 }
 };
 MODULE_DEVICE_TABLE(pci, ni_670x_pci_table);

 static struct pci_driver ni_670x_pci_driver = {
 	.name		= "ni_670x",
 	.id_table	= ni_670x_pci_table,
 	.probe		= ni_670x_pci_probe,
 	.remove		= comedi_pci_auto_unconfig,
 };
 module_comedi_pci_driver(ni_670x_driver, ni_670x_pci_driver);

 MODULE_AUTHOR("Comedi http://www.comedi.org");
 MODULE_DESCRIPTION("Comedi low-level driver");
 MODULE_LICENSE("GPL");
	/*
	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 <linux/pci.h>
	#include <linux/interrupt.h>
	#include <linux/slab.h>

	#include "../comedidev.h"

	#include "mite.h"

	#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

	enum ni_670x_boardid {
	BOARD_PCI6703,
	BOARD_PXI6704,
	BOARD_PCI6704,
	};

	struct ni_670x_board {
	const char *name;
	unsigned short ao_chans;
	};

	static const struct ni_670x_board ni_670x_boards[] = {
	[BOARD_PCI6703] = {
	.name = "PCI-6703",
	.ao_chans = 16,
	},
	[BOARD_PXI6704] = {
	.name = "PXI-6704",
	.ao_chans = 32,
	},
	[BOARD_PCI6704] = {
	.name = "PCI-6704",
	.ao_chans = 32,
	},
	};

	struct ni_670x_private {

	struct mite_struct *mite;
	int boardtype;
	int dio;
	unsigned int ao_readback[32];
	};

	static int ni_670x_ao_winsn(struct comedi_device *dev,
	struct comedi_subdevice *s,
	struct comedi_insn insn, unsigned int data)
	{
	struct ni_670x_private *devpriv = dev->private;
	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++) {
	/* First write in channel register which channel to use */
	writel(((chan & 15) << 1) \| ((chan & 16) >> 4),
	devpriv->mite->daq_io_addr + AO_CHAN_OFFSET);
	/* write channel value */
	writel(data[i], devpriv->mite->daq_io_addr + AO_VALUE_OFFSET);
	devpriv->ao_readback[chan] = data[i];
	}

	return i;
	}

	static int ni_670x_ao_rinsn(struct comedi_device *dev,
	struct comedi_subdevice *s,
	struct comedi_insn insn, unsigned int data)
	{
	struct ni_670x_private *devpriv = dev->private;
	int i;
	int chan = CR_CHAN(insn->chanspec);

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

	return i;
	}

	static int ni_670x_dio_insn_bits(struct comedi_device *dev,
	struct comedi_subdevice *s,
	struct comedi_insn insn, unsigned int data)
	{
	struct ni_670x_private *devpriv = dev->private;
	void __iomem *io_addr = devpriv->mite->daq_io_addr +
	DIO_PORT0_DATA_OFFSET;
	unsigned int mask = data[0];
	unsigned int bits = data[1];

	if (mask) {
	s->state &= ~mask;
	s->state \|= (bits & mask);

	writel(s->state, io_addr);
	}

	data[1] = readl(io_addr);

	return insn->n;
	}

	static int ni_670x_dio_insn_config(struct comedi_device *dev,
	struct comedi_subdevice *s,
	struct comedi_insn insn, unsigned int data)
	{
	struct ni_670x_private *devpriv = dev->private;
	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_auto_attach(struct comedi_device *dev,
	unsigned long context)
	{
	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
	const struct ni_670x_board *thisboard = NULL;
	struct ni_670x_private *devpriv;
	struct comedi_subdevice *s;
	int ret;
	int i;

	if (context < ARRAY_SIZE(ni_670x_boards))
	thisboard = &ni_670x_boards[context];
	if (!thisboard)
	return -ENODEV;
	dev->board_ptr = thisboard;
	dev->board_name = thisboard->name;

	ret = comedi_pci_enable(dev);
	if (ret)
	return ret;

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

	devpriv->mite = mite_alloc(pcidev);
	if (!devpriv->mite)
	return -ENOMEM;

	ret = mite_setup(devpriv->mite);
	if (ret < 0) {
	dev_warn(dev->class_dev, "error setting up mite\n");
	return ret;
	}

	ret = comedi_alloc_subdevices(dev, 2);
	if (ret)
	return ret;

	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 struct comedi_lrange **range_table_list;

	range_table_list = kmalloc(sizeof(struct 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;

	/* Config of misc registers */
	writel(0x10, devpriv->mite->daq_io_addr + MISC_CONTROL_OFFSET);
	/* Config of ao registers */
	writel(0x00, devpriv->mite->daq_io_addr + AO_CONTROL_OFFSET);

	dev_info(dev->class_dev, "%s: %s attached\n",
	dev->driver->driver_name, dev->board_name);

	return 0;
	}

	static void ni_670x_detach(struct comedi_device *dev)
	{
	struct ni_670x_private *devpriv = dev->private;
	struct comedi_subdevice *s;

	if (dev->n_subdevices) {
	s = &dev->subdevices[0];
	if (s)
	kfree(s->range_table_list);
	}
	if (devpriv && devpriv->mite) {
	mite_unsetup(devpriv->mite);
	mite_free(devpriv->mite);
	}
	comedi_pci_disable(dev);
	}

	static struct comedi_driver ni_670x_driver = {
	.driver_name = "ni_670x",
	.module = THIS_MODULE,
	.auto_attach = ni_670x_auto_attach,
	.detach = ni_670x_detach,
	};

	static int ni_670x_pci_probe(struct pci_dev *dev,
	const struct pci_device_id *id)
	{
	return comedi_pci_auto_config(dev, &ni_670x_driver, id->driver_data);
	}

	static DEFINE_PCI_DEVICE_TABLE(ni_670x_pci_table) = {
	{ PCI_VDEVICE(NI, 0x1290), BOARD_PCI6704 },
	{ PCI_VDEVICE(NI, 0x1920), BOARD_PXI6704 },
	{ PCI_VDEVICE(NI, 0x2c90), BOARD_PCI6703 },
	{ 0 }
	};
	MODULE_DEVICE_TABLE(pci, ni_670x_pci_table);

	static struct pci_driver ni_670x_pci_driver = {
	.name = "ni_670x",
	.id_table = ni_670x_pci_table,
	.probe = ni_670x_pci_probe,
	.remove = comedi_pci_auto_unconfig,
	};
	module_comedi_pci_driver(ni_670x_driver, ni_670x_pci_driver);

	MODULE_AUTHOR("Comedi http://www.comedi.org");
	MODULE_DESCRIPTION("Comedi low-level driver");
	MODULE_LICENSE("GPL");