drivers/staging/comedi/drivers/adl_pci6208.c - kernel/msm-4.9 - Gitiles

 /*
     comedi/drivers/adl_pci6208.c

     Hardware driver for ADLink 6208 series cards:
 	card	     | voltage output    | current output
 	-------------+-------------------+---------------
 	PCI-6208V    |  8 channels       | -
 	PCI-6216V    | 16 channels       | -
 	PCI-6208A    |  8 channels       | 8 channels

     COMEDI - Linux Control and Measurement Device Interface
     Copyright (C) 2000 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: adl_pci6208
 Description: ADLink PCI-6208A
 Devices: [ADLink] PCI-6208A (adl_pci6208)
 Author: nsyeow <nsyeow@pd.jaring.my>
 Updated: Fri, 30 Jan 2004 14:44:27 +0800
 Status: untested

 Configuration Options:
   none

 References:
 	- ni_660x.c
 	- adl_pci9111.c		copied the entire pci setup section
 	- adl_pci9118.c
 */
 /*
  * These headers should be followed by a blank line, and any comments
  * you wish to say about the driver.  The comment area is the place
  * to put any known bugs, limitations, unsupported features, supported
  * command triggers, whether or not commands are supported on particular
  * subdevices, etc.
  *
  * Somewhere in the comment should be information about configuration
  * options that are used with comedi_config.
  */
 #include "../comedidev.h"

 /*
  * PCI-6208/6216-GL register map
  */
 #define PCI6208_AO_CONTROL(x)		(0x00 + (2 * (x)))
 #define PCI6208_AO_STATUS		0x00
 #define PCI6208_AO_STATUS_DATA_SEND	(1 << 0)
 #define PCI6208_DIO			0x40
 #define PCI6208_DIO_DO_MASK		(0x0f)
 #define PCI6208_DIO_DO_SHIFT		(0)
 #define PCI6208_DIO_DI_MASK		(0xf0)
 #define PCI6208_DIO_DI_SHIFT		(4)

 /* Board descriptions */
 struct pci6208_board {
 	const char *name;
 	unsigned short dev_id;	/* `lspci` will show you this */
 	int ao_chans;
 };

 static const struct pci6208_board pci6208_boards[] = {
 	/*{
 	   .name = "pci6208v",
 	   .dev_id = 0x6208,      // not sure
 	   .ao_chans = 8
 	   },
 	   {
 	   .name = "pci6216v",
 	   .dev_id = 0x6208,      // not sure
 	   .ao_chans = 16
 	   }, */
 	{
 	 .name = "pci6208a",
 	 .dev_id = 0x6208,
 	 .ao_chans = 8
 	 }
 };

 struct pci6208_private {
 	int data;
 	struct pci_dev *pci_dev;	/* for a PCI device */
 	unsigned int ao_readback[2];	/* Used for AO readback */
 };

 static int pci6208_ao_winsn(struct comedi_device *dev,
 			    struct comedi_subdevice *s,
 			    struct comedi_insn *insn, unsigned int *data)
 {
 	struct pci6208_private *devpriv = dev->private;
 	int i = 0, Data_Read;
 	unsigned short chan = CR_CHAN(insn->chanspec);
 	unsigned long invert = 1 << (16 - 1);
 	unsigned long out_value;
 	/* Writing a list of values to an AO channel is probably not
 	 * very useful, but that's how the interface is defined. */
 	for (i = 0; i < insn->n; i++) {
 		out_value = data[i] ^ invert;
 		/* a typical programming sequence */
 		do {
 			Data_Read = (inw(dev->iobase) & 1);
 		} while (Data_Read);
 		outw(out_value, dev->iobase + (0x02 * chan));
 		devpriv->ao_readback[chan] = out_value;
 	}

 	/* return the number of samples read/written */
 	return i;
 }

 /* AO subdevices should have a read insn as well as a write insn.
  * Usually this means copying a value stored in devpriv. */
 static int pci6208_ao_rinsn(struct comedi_device *dev,
 			    struct comedi_subdevice *s,
 			    struct comedi_insn *insn, unsigned int *data)
 {
 	struct pci6208_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 pci6208_dio_insn_bits(struct comedi_device *dev,
 				 struct comedi_subdevice *s,
 				 struct comedi_insn *insn,
 				 unsigned int *data)
 {
 	unsigned int mask = data[0] & PCI6208_DIO_DO_MASK;
 	unsigned int bits = data[1];

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

 		outw(s->state, dev->iobase + PCI6208_DIO);
 	}

 	s->state = inw(dev->iobase + PCI6208_DIO);
 	data[1] = s->state;

 	return insn->n;
 }

 static int pci6208_dio_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 mask = 1 << chan;

 	switch (data[0]) {
 	case INSN_CONFIG_DIO_QUERY:
 		data[1] = (s->io_bits & mask) ? COMEDI_OUTPUT : COMEDI_INPUT;
 		break;
 	default:
 		return -EINVAL;
 	}

 	return insn->n;
 }

 static struct pci_dev *pci6208_find_device(struct comedi_device *dev,
 					   struct comedi_devconfig *it)
 {
 	const struct pci6208_board *thisboard;
 	struct pci_dev *pci_dev = NULL;
 	int bus = it->options[0];
 	int slot = it->options[1];
 	int i;

 	for_each_pci_dev(pci_dev) {
 		if (pci_dev->vendor != PCI_VENDOR_ID_ADLINK)
 			continue;
 		for (i = 0; i < ARRAY_SIZE(pci6208_boards); i++) {
 			thisboard = &pci6208_boards[i];
 			if (thisboard->dev_id != pci_dev->device)
 				continue;
 			/* was a particular bus/slot requested? */
 			if (bus || slot) {
 				/* are we on the wrong bus/slot? */
 				if (pci_dev->bus->number != bus ||
 				    PCI_SLOT(pci_dev->devfn) != slot)
 					continue;
 			}
 			dev_dbg(dev->class_dev,
 				"Found %s on bus %d, slot, %d, irq=%d\n",
 				thisboard->name,
 				pci_dev->bus->number,
 				PCI_SLOT(pci_dev->devfn),
 				pci_dev->irq);
 			dev->board_ptr = thisboard;
 			return pci_dev;
 		}
 	}
 	dev_err(dev->class_dev,
 		"No supported board found! (req. bus %d, slot %d)\n",
 		bus, slot);
 	return NULL;
 }

 static int pci6208_attach(struct comedi_device *dev,
 			  struct comedi_devconfig *it)
 {
 	const struct pci6208_board *thisboard;
 	struct pci6208_private *devpriv;
 	struct comedi_subdevice *s;
 	int ret;

 	ret = alloc_private(dev, sizeof(*devpriv));
 	if (ret < 0)
 		return ret;
 	devpriv = dev->private;

 	devpriv->pci_dev = pci6208_find_device(dev, it);
 	if (!devpriv->pci_dev)
 		return -EIO;
 	thisboard = comedi_board(dev);

 	ret = comedi_pci_enable(devpriv->pci_dev, "adl_pci6208");
 	if (ret) {
 		dev_err(dev->class_dev,
 			"Failed to enable PCI device and request regions\n");
 		return ret;
 	}

 	dev->iobase = pci_resource_start(devpriv->pci_dev, 2);

 	dev->board_name = thisboard->name;

 	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;
 	s->range_table	= &range_bipolar10;
 	s->insn_write	= pci6208_ao_winsn;
 	s->insn_read	= pci6208_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	= pci6208_dio_insn_bits;
 	s->insn_config	= pci6208_dio_insn_config;

 	s->io_bits	= 0x0f;
 	s->state	= inw(dev->iobase + PCI6208_DIO);

 	dev_info(dev->class_dev, "%s: %s, I/O base=0x%04lx\n",
 		dev->driver->driver_name, dev->board_name, dev->iobase);

 	return 0;
 }

 static void pci6208_detach(struct comedi_device *dev)
 {
 	struct pci6208_private *devpriv = dev->private;

 	if (devpriv && devpriv->pci_dev) {
 		if (dev->iobase)
 			comedi_pci_disable(devpriv->pci_dev);
 		pci_dev_put(devpriv->pci_dev);
 	}
 }

 static struct comedi_driver adl_pci6208_driver = {
 	.driver_name	= "adl_pci6208",
 	.module		= THIS_MODULE,
 	.attach		= pci6208_attach,
 	.detach		= pci6208_detach,
 };

 static int __devinit adl_pci6208_pci_probe(struct pci_dev *dev,
 					   const struct pci_device_id *ent)
 {
 	return comedi_pci_auto_config(dev, &adl_pci6208_driver);
 }

 static void __devexit adl_pci6208_pci_remove(struct pci_dev *dev)
 {
 	comedi_pci_auto_unconfig(dev);
 }

 /* This is used by modprobe to translate PCI IDs to drivers.  Should
  * only be used for PCI and ISA-PnP devices */
 static DEFINE_PCI_DEVICE_TABLE(adl_pci6208_pci_table) = {
 	/* { PCI_VENDOR_ID_ADLINK, 0x6208, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, */
 	/* { PCI_VENDOR_ID_ADLINK, 0x6208, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, */
 	{ PCI_DEVICE(PCI_VENDOR_ID_ADLINK, 0x6208) },
 	{ 0 }
 };
 MODULE_DEVICE_TABLE(pci, adl_pci6208_pci_table);

 static struct pci_driver adl_pci6208_pci_driver = {
 	.name		= "adl_pci6208",
 	.id_table	= adl_pci6208_pci_table,
 	.probe		= adl_pci6208_pci_probe,
 	.remove		= __devexit_p(adl_pci6208_pci_remove),
 };
 module_comedi_pci_driver(adl_pci6208_driver, adl_pci6208_pci_driver);

 MODULE_AUTHOR("Comedi http://www.comedi.org");
 MODULE_DESCRIPTION("Comedi low-level driver");
 MODULE_LICENSE("GPL");
	/*
	comedi/drivers/adl_pci6208.c

	Hardware driver for ADLink 6208 series cards:
	card \| voltage output \| current output
	-------------+-------------------+---------------
	PCI-6208V \| 8 channels \| -
	PCI-6216V \| 16 channels \| -
	PCI-6208A \| 8 channels \| 8 channels

	COMEDI - Linux Control and Measurement Device Interface
	Copyright (C) 2000 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: adl_pci6208
	Description: ADLink PCI-6208A
	Devices: [ADLink] PCI-6208A (adl_pci6208)
	Author: nsyeow <nsyeow@pd.jaring.my>
	Updated: Fri, 30 Jan 2004 14:44:27 +0800
	Status: untested

	Configuration Options:
	none

	References:
	- ni_660x.c
	- adl_pci9111.c copied the entire pci setup section
	- adl_pci9118.c
	*/
	/*
	* These headers should be followed by a blank line, and any comments
	* you wish to say about the driver. The comment area is the place
	* to put any known bugs, limitations, unsupported features, supported
	* command triggers, whether or not commands are supported on particular
	* subdevices, etc.
	*
	* Somewhere in the comment should be information about configuration
	* options that are used with comedi_config.
	*/
	#include "../comedidev.h"

	/*
	* PCI-6208/6216-GL register map
	*/
	#define PCI6208_AO_CONTROL(x) (0x00 + (2 * (x)))
	#define PCI6208_AO_STATUS 0x00
	#define PCI6208_AO_STATUS_DATA_SEND (1 << 0)
	#define PCI6208_DIO 0x40
	#define PCI6208_DIO_DO_MASK (0x0f)
	#define PCI6208_DIO_DO_SHIFT (0)
	#define PCI6208_DIO_DI_MASK (0xf0)
	#define PCI6208_DIO_DI_SHIFT (4)

	/* Board descriptions */
	struct pci6208_board {
	const char *name;
	unsigned short dev_id; /* `lspci` will show you this */
	int ao_chans;
	};

	static const struct pci6208_board pci6208_boards[] = {
	/*{
	.name = "pci6208v",
	.dev_id = 0x6208, // not sure
	.ao_chans = 8
	},
	{
	.name = "pci6216v",
	.dev_id = 0x6208, // not sure
	.ao_chans = 16
	}, */
	{
	.name = "pci6208a",
	.dev_id = 0x6208,
	.ao_chans = 8
	}
	};

	struct pci6208_private {
	int data;
	struct pci_dev pci_dev; / for a PCI device */
	unsigned int ao_readback[2]; /* Used for AO readback */
	};

	static int pci6208_ao_winsn(struct comedi_device *dev,
	struct comedi_subdevice *s,
	struct comedi_insn insn, unsigned int data)
	{
	struct pci6208_private *devpriv = dev->private;
	int i = 0, Data_Read;
	unsigned short chan = CR_CHAN(insn->chanspec);
	unsigned long invert = 1 << (16 - 1);
	unsigned long out_value;
	/* Writing a list of values to an AO channel is probably not
	* very useful, but that's how the interface is defined. */
	for (i = 0; i < insn->n; i++) {
	out_value = data[i] ^ invert;
	/* a typical programming sequence */
	do {
	Data_Read = (inw(dev->iobase) & 1);
	} while (Data_Read);
	outw(out_value, dev->iobase + (0x02 * chan));
	devpriv->ao_readback[chan] = out_value;
	}

	/* return the number of samples read/written */
	return i;
	}

	/* AO subdevices should have a read insn as well as a write insn.
	* Usually this means copying a value stored in devpriv. */
	static int pci6208_ao_rinsn(struct comedi_device *dev,
	struct comedi_subdevice *s,
	struct comedi_insn insn, unsigned int data)
	{
	struct pci6208_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 pci6208_dio_insn_bits(struct comedi_device *dev,
	struct comedi_subdevice *s,
	struct comedi_insn *insn,
	unsigned int *data)
	{
	unsigned int mask = data[0] & PCI6208_DIO_DO_MASK;
	unsigned int bits = data[1];

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

	outw(s->state, dev->iobase + PCI6208_DIO);
	}

	s->state = inw(dev->iobase + PCI6208_DIO);
	data[1] = s->state;

	return insn->n;
	}

	static int pci6208_dio_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 mask = 1 << chan;

	switch (data[0]) {
	case INSN_CONFIG_DIO_QUERY:
	data[1] = (s->io_bits & mask) ? COMEDI_OUTPUT : COMEDI_INPUT;
	break;
	default:
	return -EINVAL;
	}

	return insn->n;
	}

	static struct pci_dev pci6208_find_device(struct comedi_device dev,
	struct comedi_devconfig *it)
	{
	const struct pci6208_board *thisboard;
	struct pci_dev *pci_dev = NULL;
	int bus = it->options[0];
	int slot = it->options[1];
	int i;

	for_each_pci_dev(pci_dev) {
	if (pci_dev->vendor != PCI_VENDOR_ID_ADLINK)
	continue;
	for (i = 0; i < ARRAY_SIZE(pci6208_boards); i++) {
	thisboard = &pci6208_boards[i];
	if (thisboard->dev_id != pci_dev->device)
	continue;
	/* was a particular bus/slot requested? */
	if (bus \|\| slot) {
	/* are we on the wrong bus/slot? */
	if (pci_dev->bus->number != bus \|\|
	PCI_SLOT(pci_dev->devfn) != slot)
	continue;
	}
	dev_dbg(dev->class_dev,
	"Found %s on bus %d, slot, %d, irq=%d\n",
	thisboard->name,
	pci_dev->bus->number,
	PCI_SLOT(pci_dev->devfn),
	pci_dev->irq);
	dev->board_ptr = thisboard;
	return pci_dev;
	}
	}
	dev_err(dev->class_dev,
	"No supported board found! (req. bus %d, slot %d)\n",
	bus, slot);
	return NULL;
	}

	static int pci6208_attach(struct comedi_device *dev,
	struct comedi_devconfig *it)
	{
	const struct pci6208_board *thisboard;
	struct pci6208_private *devpriv;
	struct comedi_subdevice *s;
	int ret;

	ret = alloc_private(dev, sizeof(*devpriv));
	if (ret < 0)
	return ret;
	devpriv = dev->private;

	devpriv->pci_dev = pci6208_find_device(dev, it);
	if (!devpriv->pci_dev)
	return -EIO;
	thisboard = comedi_board(dev);

	ret = comedi_pci_enable(devpriv->pci_dev, "adl_pci6208");
	if (ret) {
	dev_err(dev->class_dev,
	"Failed to enable PCI device and request regions\n");
	return ret;
	}

	dev->iobase = pci_resource_start(devpriv->pci_dev, 2);

	dev->board_name = thisboard->name;

	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;
	s->range_table = &range_bipolar10;
	s->insn_write = pci6208_ao_winsn;
	s->insn_read = pci6208_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 = pci6208_dio_insn_bits;
	s->insn_config = pci6208_dio_insn_config;

	s->io_bits = 0x0f;
	s->state = inw(dev->iobase + PCI6208_DIO);

	dev_info(dev->class_dev, "%s: %s, I/O base=0x%04lx\n",
	dev->driver->driver_name, dev->board_name, dev->iobase);

	return 0;
	}

	static void pci6208_detach(struct comedi_device *dev)
	{
	struct pci6208_private *devpriv = dev->private;

	if (devpriv && devpriv->pci_dev) {
	if (dev->iobase)
	comedi_pci_disable(devpriv->pci_dev);
	pci_dev_put(devpriv->pci_dev);
	}
	}

	static struct comedi_driver adl_pci6208_driver = {
	.driver_name = "adl_pci6208",
	.module = THIS_MODULE,
	.attach = pci6208_attach,
	.detach = pci6208_detach,
	};

	static int __devinit adl_pci6208_pci_probe(struct pci_dev *dev,
	const struct pci_device_id *ent)
	{
	return comedi_pci_auto_config(dev, &adl_pci6208_driver);
	}

	static void __devexit adl_pci6208_pci_remove(struct pci_dev *dev)
	{
	comedi_pci_auto_unconfig(dev);
	}

	/* This is used by modprobe to translate PCI IDs to drivers. Should
	* only be used for PCI and ISA-PnP devices */
	static DEFINE_PCI_DEVICE_TABLE(adl_pci6208_pci_table) = {
	/* { PCI_VENDOR_ID_ADLINK, 0x6208, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, */
	/* { PCI_VENDOR_ID_ADLINK, 0x6208, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, */
	{ PCI_DEVICE(PCI_VENDOR_ID_ADLINK, 0x6208) },
	{ 0 }
	};
	MODULE_DEVICE_TABLE(pci, adl_pci6208_pci_table);

	static struct pci_driver adl_pci6208_pci_driver = {
	.name = "adl_pci6208",
	.id_table = adl_pci6208_pci_table,
	.probe = adl_pci6208_pci_probe,
	.remove = __devexit_p(adl_pci6208_pci_remove),
	};
	module_comedi_pci_driver(adl_pci6208_driver, adl_pci6208_pci_driver);

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