drivers/staging/comedi/drivers/adl_pci6208.c - arm/linux-arm64-legacy - Git at Google

 /*
  * adl_pci6208.c
  * Comedi driver for ADLink 6208 series cards
  *
  * 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.
  */

 /*
  * 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
  */

 #include <linux/module.h>
 #include <linux/delay.h>
 #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_eoc(struct comedi_device *dev,
 			  struct comedi_subdevice *s,
 			  struct comedi_insn *insn,
 			  unsigned long context)
 {
 	unsigned int status;

 	status = inw(dev->iobase + PCI6208_AO_STATUS);
 	if ((status & PCI6208_AO_STATUS_DATA_SEND) == 0)
 		return 0;
 	return -EBUSY;
 }

 static int pci6208_ao_insn_write(struct comedi_device *dev,
 				 struct comedi_subdevice *s,
 				 struct comedi_insn *insn,
 				 unsigned int *data)
 {
 	struct pci6208_private *devpriv = dev->private;
 	unsigned int chan = CR_CHAN(insn->chanspec);
 	unsigned int val = devpriv->ao_readback[chan];
 	int ret;
 	int i;

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

 		/* D/A transfer rate is 2.2us */
 		ret = comedi_timeout(dev, s, insn, pci6208_ao_eoc, 0);
 		if (ret)
 			return ret;

 		/* the hardware expects two's complement values */
 		outw(comedi_offset_munge(s, val),
 		     dev->iobase + PCI6208_AO_CONTROL(chan));
 	}
 	devpriv->ao_readback[chan] = val;

 	return insn->n;
 }

 static int pci6208_ao_insn_read(struct comedi_device *dev,
 				struct comedi_subdevice *s,
 				struct comedi_insn *insn,
 				unsigned int *data)
 {
 	struct pci6208_private *devpriv = dev->private;
 	unsigned 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)
 {
 	if (comedi_dio_update_state(s, data))
 		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 = comedi_alloc_devpriv(dev, sizeof(*devpriv));
 	if (!devpriv)
 		return -ENOMEM;

 	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_insn_write;
 	s->insn_read	= pci6208_ao_insn_read;

 	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;

 	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 const struct pci_device_id 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 driver for ADLink 6208 series cards");
 MODULE_LICENSE("GPL");
	/*
	* adl_pci6208.c
	* Comedi driver for ADLink 6208 series cards
	*
	* 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.
	*/

	/*
	* 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
	*/

	#include <linux/module.h>
	#include <linux/delay.h>
	#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_eoc(struct comedi_device *dev,
	struct comedi_subdevice *s,
	struct comedi_insn *insn,
	unsigned long context)
	{
	unsigned int status;

	status = inw(dev->iobase + PCI6208_AO_STATUS);
	if ((status & PCI6208_AO_STATUS_DATA_SEND) == 0)
	return 0;
	return -EBUSY;
	}

	static int pci6208_ao_insn_write(struct comedi_device *dev,
	struct comedi_subdevice *s,
	struct comedi_insn *insn,
	unsigned int *data)
	{
	struct pci6208_private *devpriv = dev->private;
	unsigned int chan = CR_CHAN(insn->chanspec);
	unsigned int val = devpriv->ao_readback[chan];
	int ret;
	int i;

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

	/* D/A transfer rate is 2.2us */
	ret = comedi_timeout(dev, s, insn, pci6208_ao_eoc, 0);
	if (ret)
	return ret;

	/* the hardware expects two's complement values */
	outw(comedi_offset_munge(s, val),
	dev->iobase + PCI6208_AO_CONTROL(chan));
	}
	devpriv->ao_readback[chan] = val;

	return insn->n;
	}

	static int pci6208_ao_insn_read(struct comedi_device *dev,
	struct comedi_subdevice *s,
	struct comedi_insn *insn,
	unsigned int *data)
	{
	struct pci6208_private *devpriv = dev->private;
	unsigned 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)
	{
	if (comedi_dio_update_state(s, data))
	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 = comedi_alloc_devpriv(dev, sizeof(*devpriv));
	if (!devpriv)
	return -ENOMEM;

	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_insn_write;
	s->insn_read = pci6208_ao_insn_read;

	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;

	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 const struct pci_device_id 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 driver for ADLink 6208 series cards");
	MODULE_LICENSE("GPL");