drivers/staging/comedi/drivers/adl_pci6208.c - nest-hello/linux-3.10 - Git at Google

 /*
     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-6208/6216 Series Multi-channel Analog Output Cards
 Devices: (ADLink) PCI-6208 [adl_pci6208]
 	 (ADLink) PCI-6216 [adl_pci6216]
 Author: nsyeow <nsyeow@pd.jaring.my>
 Updated: Fri, 30 Jan 2004 14:44:27 +0800
 Status: untested

 Configuration Options: not applicable, uses PCI auto config

 References:
 	- ni_660x.c
 	- adl_pci9111.c		copied the entire pci setup section
 	- adl_pci9118.c
 */

 #include <linux/pci.h>

 #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)

 #define PCI6208_MAX_AO_CHANNELS		16

 enum pci6208_boardid {
 	BOARD_PCI6208,
 	BOARD_PCI6216,
 };

 struct pci6208_board {
 	const char *name;
 	int ao_chans;
 };

 static const struct pci6208_board pci6208_boards[] = {
 	[BOARD_PCI6208] = {
 		.name		= "adl_pci6208",
 		.ao_chans	= 8,
 	},
 	[BOARD_PCI6216] = {
 		.name		= "adl_pci6216",
 		.ao_chans	= 16,
 	},
 };

 struct pci6208_private {
 	unsigned int ao_readback[PCI6208_MAX_AO_CHANNELS];
 };

 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 chan = CR_CHAN(insn->chanspec);
 	unsigned long invert = 1 << (16 - 1);
 	unsigned long value = 0;
 	unsigned short status;
 	int i;

 	for (i = 0; i < insn->n; i++) {
 		value = data[i] ^ invert;

 		do {
 			status = inw(dev->iobase + PCI6208_AO_STATUS);
 		} while (status & PCI6208_AO_STATUS_DATA_SEND);

 		outw(value, dev->iobase + PCI6208_AO_CONTROL(chan));
 	}
 	devpriv->ao_readback[chan] = value;

 	return insn->n;
 }

 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 chan = CR_CHAN(insn->chanspec);
 	int i;

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

 	return insn->n;
 }

 static int pci6208_di_insn_bits(struct comedi_device *dev,
 				struct comedi_subdevice *s,
 				struct comedi_insn *insn,
 				unsigned int *data)
 {
 	unsigned int val;

 	val = inw(dev->iobase + PCI6208_DIO);
 	val = (val & PCI6208_DIO_DI_MASK) >> PCI6208_DIO_DI_SHIFT;

 	data[1] = val;

 	return insn->n;
 }

 static int pci6208_do_insn_bits(struct comedi_device *dev,
 				struct comedi_subdevice *s,
 				struct comedi_insn *insn,
 				unsigned int *data)
 {
 	unsigned int mask = data[0];
 	unsigned int bits = data[1];

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

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

 	data[1] = s->state;

 	return insn->n;
 }

 static int pci6208_auto_attach(struct comedi_device *dev,
 			       unsigned long context)
 {
 	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
 	const struct pci6208_board *boardinfo = NULL;
 	struct pci6208_private *devpriv;
 	struct comedi_subdevice *s;
 	unsigned int val;
 	int ret;

 	if (context < ARRAY_SIZE(pci6208_boards))
 		boardinfo = &pci6208_boards[context];
 	if (!boardinfo)
 		return -ENODEV;
 	dev->board_ptr = boardinfo;
 	dev->board_name = boardinfo->name;

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

 	ret = comedi_pci_enable(dev);
 	if (ret)
 		return ret;
 	dev->iobase = pci_resource_start(pcidev, 2);

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

 	s = &dev->subdevices[0];
 	/* analog output subdevice */
 	s->type		= COMEDI_SUBD_AO;
 	s->subdev_flags	= SDF_WRITABLE;
 	s->n_chan	= boardinfo->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 input subdevice */
 	s->type		= COMEDI_SUBD_DI;
 	s->subdev_flags	= SDF_READABLE;
 	s->n_chan	= 4;
 	s->maxdata	= 1;
 	s->range_table	= &range_digital;
 	s->insn_bits	= pci6208_di_insn_bits;

 	s = &dev->subdevices[2];
 	/* digital output subdevice */
 	s->type		= COMEDI_SUBD_DO;
 	s->subdev_flags	= SDF_WRITABLE;
 	s->n_chan	= 4;
 	s->maxdata	= 1;
 	s->range_table	= &range_digital;
 	s->insn_bits	= pci6208_do_insn_bits;

 	/*
 	 * Get the read back signals from the digital outputs
 	 * and save it as the initial state for the subdevice.
 	 */
 	val = inw(dev->iobase + PCI6208_DIO);
 	val = (val & PCI6208_DIO_DO_MASK) >> PCI6208_DIO_DO_SHIFT;
 	s->state	= val;
 	s->io_bits	= 0x0f;

 	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 struct comedi_driver adl_pci6208_driver = {
 	.driver_name	= "adl_pci6208",
 	.module		= THIS_MODULE,
 	.auto_attach	= pci6208_auto_attach,
 	.detach		= comedi_pci_disable,
 };

 static int adl_pci6208_pci_probe(struct pci_dev *dev,
 				 const struct pci_device_id *id)
 {
 	return comedi_pci_auto_config(dev, &adl_pci6208_driver,
 				      id->driver_data);
 }

 static DEFINE_PCI_DEVICE_TABLE(adl_pci6208_pci_table) = {
 	{ PCI_VDEVICE(ADLINK, 0x6208), BOARD_PCI6208 },
 	{ PCI_VDEVICE(ADLINK, 0x6216), BOARD_PCI6216 },
 	{ 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		= comedi_pci_auto_unconfig,
 };
 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-6208/6216 Series Multi-channel Analog Output Cards
	Devices: (ADLink) PCI-6208 [adl_pci6208]
	(ADLink) PCI-6216 [adl_pci6216]
	Author: nsyeow <nsyeow@pd.jaring.my>
	Updated: Fri, 30 Jan 2004 14:44:27 +0800
	Status: untested

	Configuration Options: not applicable, uses PCI auto config

	References:
	- ni_660x.c
	- adl_pci9111.c copied the entire pci setup section
	- adl_pci9118.c
	*/

	#include <linux/pci.h>

	#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)

	#define PCI6208_MAX_AO_CHANNELS 16

	enum pci6208_boardid {
	BOARD_PCI6208,
	BOARD_PCI6216,
	};

	struct pci6208_board {
	const char *name;
	int ao_chans;
	};

	static const struct pci6208_board pci6208_boards[] = {
	[BOARD_PCI6208] = {
	.name = "adl_pci6208",
	.ao_chans = 8,
	},
	[BOARD_PCI6216] = {
	.name = "adl_pci6216",
	.ao_chans = 16,
	},
	};

	struct pci6208_private {
	unsigned int ao_readback[PCI6208_MAX_AO_CHANNELS];
	};

	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 chan = CR_CHAN(insn->chanspec);
	unsigned long invert = 1 << (16 - 1);
	unsigned long value = 0;
	unsigned short status;
	int i;

	for (i = 0; i < insn->n; i++) {
	value = data[i] ^ invert;

	do {
	status = inw(dev->iobase + PCI6208_AO_STATUS);
	} while (status & PCI6208_AO_STATUS_DATA_SEND);

	outw(value, dev->iobase + PCI6208_AO_CONTROL(chan));
	}
	devpriv->ao_readback[chan] = value;

	return insn->n;
	}

	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 chan = CR_CHAN(insn->chanspec);
	int i;

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

	return insn->n;
	}

	static int pci6208_di_insn_bits(struct comedi_device *dev,
	struct comedi_subdevice *s,
	struct comedi_insn *insn,
	unsigned int *data)
	{
	unsigned int val;

	val = inw(dev->iobase + PCI6208_DIO);
	val = (val & PCI6208_DIO_DI_MASK) >> PCI6208_DIO_DI_SHIFT;

	data[1] = val;

	return insn->n;
	}

	static int pci6208_do_insn_bits(struct comedi_device *dev,
	struct comedi_subdevice *s,
	struct comedi_insn *insn,
	unsigned int *data)
	{
	unsigned int mask = data[0];
	unsigned int bits = data[1];

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

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

	data[1] = s->state;

	return insn->n;
	}

	static int pci6208_auto_attach(struct comedi_device *dev,
	unsigned long context)
	{
	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
	const struct pci6208_board *boardinfo = NULL;
	struct pci6208_private *devpriv;
	struct comedi_subdevice *s;
	unsigned int val;
	int ret;

	if (context < ARRAY_SIZE(pci6208_boards))
	boardinfo = &pci6208_boards[context];
	if (!boardinfo)
	return -ENODEV;
	dev->board_ptr = boardinfo;
	dev->board_name = boardinfo->name;

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

	ret = comedi_pci_enable(dev);
	if (ret)
	return ret;
	dev->iobase = pci_resource_start(pcidev, 2);

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

	s = &dev->subdevices[0];
	/* analog output subdevice */
	s->type = COMEDI_SUBD_AO;
	s->subdev_flags = SDF_WRITABLE;
	s->n_chan = boardinfo->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 input subdevice */
	s->type = COMEDI_SUBD_DI;
	s->subdev_flags = SDF_READABLE;
	s->n_chan = 4;
	s->maxdata = 1;
	s->range_table = &range_digital;
	s->insn_bits = pci6208_di_insn_bits;

	s = &dev->subdevices[2];
	/* digital output subdevice */
	s->type = COMEDI_SUBD_DO;
	s->subdev_flags = SDF_WRITABLE;
	s->n_chan = 4;
	s->maxdata = 1;
	s->range_table = &range_digital;
	s->insn_bits = pci6208_do_insn_bits;

	/*
	* Get the read back signals from the digital outputs
	* and save it as the initial state for the subdevice.
	*/
	val = inw(dev->iobase + PCI6208_DIO);
	val = (val & PCI6208_DIO_DO_MASK) >> PCI6208_DIO_DO_SHIFT;
	s->state = val;
	s->io_bits = 0x0f;

	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 struct comedi_driver adl_pci6208_driver = {
	.driver_name = "adl_pci6208",
	.module = THIS_MODULE,
	.auto_attach = pci6208_auto_attach,
	.detach = comedi_pci_disable,
	};

	static int adl_pci6208_pci_probe(struct pci_dev *dev,
	const struct pci_device_id *id)
	{
	return comedi_pci_auto_config(dev, &adl_pci6208_driver,
	id->driver_data);
	}

	static DEFINE_PCI_DEVICE_TABLE(adl_pci6208_pci_table) = {
	{ PCI_VDEVICE(ADLINK, 0x6208), BOARD_PCI6208 },
	{ PCI_VDEVICE(ADLINK, 0x6216), BOARD_PCI6216 },
	{ 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 = comedi_pci_auto_unconfig,
	};
	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");