drivers/staging/comedi/drivers/adl_pci7x3x.c - arm/linux - Git at Google

 /*
  * COMEDI driver for the ADLINK PCI-723x/743x series boards.
  * Copyright (C) 2012 H Hartley Sweeten <hsweeten@visionengravers.com>
  *
  * Based on the adl_pci7230 driver written by:
  *	David Fernandez <dfcastelao@gmail.com>
  * and the adl_pci7432 driver written by:
  *	Michel Lachaine <mike@mikelachaine.ca>
  *
  * 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_pci7x3x
  * Description: 32/64-Channel Isolated Digital I/O Boards
  * Devices: [ADLink] PCI-7230 (adl_pci7230), PCI-7233 (adl_pci7233),
  *   PCI-7234 (adl_pci7234), PCI-7432 (adl_pci7432), PCI-7433 (adl_pci7433),
  *   PCI-7434 (adl_pci7434)
  * Author: H Hartley Sweeten <hsweeten@visionengravers.com>
  * Updated: Thu, 02 Aug 2012 14:27:46 -0700
  * Status: untested
  *
  * One or two subdevices are setup by this driver depending on
  * the number of digital inputs and/or outputs provided by the
  * board. Each subdevice has a maximum of 32 channels.
  *
  *	PCI-7230 - 2 subdevices: 0 - 16 input, 1 - 16 output
  *	PCI-7233 - 1 subdevice: 0 - 32 input
  *	PCI-7234 - 1 subdevice: 0 - 32 output
  *	PCI-7432 - 2 subdevices: 0 - 32 input, 1 - 32 output
  *	PCI-7433 - 2 subdevices: 0 - 32 input, 1 - 32 input
  *	PCI-7434 - 2 subdevices: 0 - 32 output, 1 - 32 output
  *
  * The PCI-7230, PCI-7432 and PCI-7433 boards also support external
  * interrupt signals on digital input channels 0 and 1. The PCI-7233
  * has dual-interrupt sources for change-of-state (COS) on any 16
  * digital input channels of LSB and for COS on any 16 digital input
  * lines of MSB. Interrupts are not currently supported by this
  * driver.
  *
  * Configuration Options: not applicable, uses comedi PCI auto config
  */

 #include <linux/module.h>

 #include "../comedi_pci.h"

 /*
  * Register I/O map (32-bit access only)
  */
 #define PCI7X3X_DIO_REG		0x00
 #define PCI743X_DIO_REG		0x04

 enum apci1516_boardid {
 	BOARD_PCI7230,
 	BOARD_PCI7233,
 	BOARD_PCI7234,
 	BOARD_PCI7432,
 	BOARD_PCI7433,
 	BOARD_PCI7434,
 };

 struct adl_pci7x3x_boardinfo {
 	const char *name;
 	int nsubdevs;
 	int di_nchan;
 	int do_nchan;
 };

 static const struct adl_pci7x3x_boardinfo adl_pci7x3x_boards[] = {
 	[BOARD_PCI7230] = {
 		.name		= "adl_pci7230",
 		.nsubdevs	= 2,
 		.di_nchan	= 16,
 		.do_nchan	= 16,
 	},
 	[BOARD_PCI7233] = {
 		.name		= "adl_pci7233",
 		.nsubdevs	= 1,
 		.di_nchan	= 32,
 	},
 	[BOARD_PCI7234] = {
 		.name		= "adl_pci7234",
 		.nsubdevs	= 1,
 		.do_nchan	= 32,
 	},
 	[BOARD_PCI7432] = {
 		.name		= "adl_pci7432",
 		.nsubdevs	= 2,
 		.di_nchan	= 32,
 		.do_nchan	= 32,
 	},
 	[BOARD_PCI7433] = {
 		.name		= "adl_pci7433",
 		.nsubdevs	= 2,
 		.di_nchan	= 64,
 	},
 	[BOARD_PCI7434] = {
 		.name		= "adl_pci7434",
 		.nsubdevs	= 2,
 		.do_nchan	= 64,
 	}
 };

 static int adl_pci7x3x_do_insn_bits(struct comedi_device *dev,
 				    struct comedi_subdevice *s,
 				    struct comedi_insn *insn,
 				    unsigned int *data)
 {
 	unsigned long reg = (unsigned long)s->private;

 	if (comedi_dio_update_state(s, data)) {
 		unsigned int val = s->state;

 		if (s->n_chan == 16) {
 			/*
 			 * It seems the PCI-7230 needs the 16-bit DO state
 			 * to be shifted left by 16 bits before being written
 			 * to the 32-bit register.  Set the value in both
 			 * halves of the register to be sure.
 			 */
 			val |= val << 16;
 		}
 		outl(val, dev->iobase + reg);
 	}

 	data[1] = s->state;

 	return insn->n;
 }

 static int adl_pci7x3x_di_insn_bits(struct comedi_device *dev,
 				    struct comedi_subdevice *s,
 				    struct comedi_insn *insn,
 				    unsigned int *data)
 {
 	unsigned long reg = (unsigned long)s->private;

 	data[1] = inl(dev->iobase + reg);

 	return insn->n;
 }

 static int adl_pci7x3x_auto_attach(struct comedi_device *dev,
 				   unsigned long context)
 {
 	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
 	const struct adl_pci7x3x_boardinfo *board = NULL;
 	struct comedi_subdevice *s;
 	int subdev;
 	int nchan;
 	int ret;

 	if (context < ARRAY_SIZE(adl_pci7x3x_boards))
 		board = &adl_pci7x3x_boards[context];
 	if (!board)
 		return -ENODEV;
 	dev->board_ptr = board;
 	dev->board_name = board->name;

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

 	ret = comedi_alloc_subdevices(dev, board->nsubdevs);
 	if (ret)
 		return ret;

 	subdev = 0;

 	if (board->di_nchan) {
 		nchan = min(board->di_nchan, 32);

 		s = &dev->subdevices[subdev];
 		/* Isolated digital inputs 0 to 15/31 */
 		s->type		= COMEDI_SUBD_DI;
 		s->subdev_flags	= SDF_READABLE;
 		s->n_chan	= nchan;
 		s->maxdata	= 1;
 		s->insn_bits	= adl_pci7x3x_di_insn_bits;
 		s->range_table	= &range_digital;

 		s->private	= (void *)PCI7X3X_DIO_REG;

 		subdev++;

 		nchan = board->di_nchan - nchan;
 		if (nchan) {
 			s = &dev->subdevices[subdev];
 			/* Isolated digital inputs 32 to 63 */
 			s->type		= COMEDI_SUBD_DI;
 			s->subdev_flags	= SDF_READABLE;
 			s->n_chan	= nchan;
 			s->maxdata	= 1;
 			s->insn_bits	= adl_pci7x3x_di_insn_bits;
 			s->range_table	= &range_digital;

 			s->private	= (void *)PCI743X_DIO_REG;

 			subdev++;
 		}
 	}

 	if (board->do_nchan) {
 		nchan = min(board->do_nchan, 32);

 		s = &dev->subdevices[subdev];
 		/* Isolated digital outputs 0 to 15/31 */
 		s->type		= COMEDI_SUBD_DO;
 		s->subdev_flags	= SDF_WRITABLE;
 		s->n_chan	= nchan;
 		s->maxdata	= 1;
 		s->insn_bits	= adl_pci7x3x_do_insn_bits;
 		s->range_table	= &range_digital;

 		s->private	= (void *)PCI7X3X_DIO_REG;

 		subdev++;

 		nchan = board->do_nchan - nchan;
 		if (nchan) {
 			s = &dev->subdevices[subdev];
 			/* Isolated digital outputs 32 to 63 */
 			s->type		= COMEDI_SUBD_DO;
 			s->subdev_flags	= SDF_WRITABLE;
 			s->n_chan	= nchan;
 			s->maxdata	= 1;
 			s->insn_bits	= adl_pci7x3x_do_insn_bits;
 			s->range_table	= &range_digital;

 			s->private	= (void *)PCI743X_DIO_REG;

 			subdev++;
 		}
 	}

 	return 0;
 }

 static struct comedi_driver adl_pci7x3x_driver = {
 	.driver_name	= "adl_pci7x3x",
 	.module		= THIS_MODULE,
 	.auto_attach	= adl_pci7x3x_auto_attach,
 	.detach		= comedi_pci_detach,
 };

 static int adl_pci7x3x_pci_probe(struct pci_dev *dev,
 				 const struct pci_device_id *id)
 {
 	return comedi_pci_auto_config(dev, &adl_pci7x3x_driver,
 				      id->driver_data);
 }

 static const struct pci_device_id adl_pci7x3x_pci_table[] = {
 	{ PCI_VDEVICE(ADLINK, 0x7230), BOARD_PCI7230 },
 	{ PCI_VDEVICE(ADLINK, 0x7233), BOARD_PCI7233 },
 	{ PCI_VDEVICE(ADLINK, 0x7234), BOARD_PCI7234 },
 	{ PCI_VDEVICE(ADLINK, 0x7432), BOARD_PCI7432 },
 	{ PCI_VDEVICE(ADLINK, 0x7433), BOARD_PCI7433 },
 	{ PCI_VDEVICE(ADLINK, 0x7434), BOARD_PCI7434 },
 	{ 0 }
 };
 MODULE_DEVICE_TABLE(pci, adl_pci7x3x_pci_table);

 static struct pci_driver adl_pci7x3x_pci_driver = {
 	.name		= "adl_pci7x3x",
 	.id_table	= adl_pci7x3x_pci_table,
 	.probe		= adl_pci7x3x_pci_probe,
 	.remove		= comedi_pci_auto_unconfig,
 };
 module_comedi_pci_driver(adl_pci7x3x_driver, adl_pci7x3x_pci_driver);

 MODULE_DESCRIPTION("ADLINK PCI-723x/743x Isolated Digital I/O boards");
 MODULE_AUTHOR("H Hartley Sweeten <hsweeten@visionengravers.com>");
 MODULE_LICENSE("GPL");
	/*
	* COMEDI driver for the ADLINK PCI-723x/743x series boards.
	* Copyright (C) 2012 H Hartley Sweeten <hsweeten@visionengravers.com>
	*
	* Based on the adl_pci7230 driver written by:
	* David Fernandez <dfcastelao@gmail.com>
	* and the adl_pci7432 driver written by:
	* Michel Lachaine <mike@mikelachaine.ca>
	*
	* 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_pci7x3x
	* Description: 32/64-Channel Isolated Digital I/O Boards
	* Devices: [ADLink] PCI-7230 (adl_pci7230), PCI-7233 (adl_pci7233),
	* PCI-7234 (adl_pci7234), PCI-7432 (adl_pci7432), PCI-7433 (adl_pci7433),
	* PCI-7434 (adl_pci7434)
	* Author: H Hartley Sweeten <hsweeten@visionengravers.com>
	* Updated: Thu, 02 Aug 2012 14:27:46 -0700
	* Status: untested
	*
	* One or two subdevices are setup by this driver depending on
	* the number of digital inputs and/or outputs provided by the
	* board. Each subdevice has a maximum of 32 channels.
	*
	* PCI-7230 - 2 subdevices: 0 - 16 input, 1 - 16 output
	* PCI-7233 - 1 subdevice: 0 - 32 input
	* PCI-7234 - 1 subdevice: 0 - 32 output
	* PCI-7432 - 2 subdevices: 0 - 32 input, 1 - 32 output
	* PCI-7433 - 2 subdevices: 0 - 32 input, 1 - 32 input
	* PCI-7434 - 2 subdevices: 0 - 32 output, 1 - 32 output
	*
	* The PCI-7230, PCI-7432 and PCI-7433 boards also support external
	* interrupt signals on digital input channels 0 and 1. The PCI-7233
	* has dual-interrupt sources for change-of-state (COS) on any 16
	* digital input channels of LSB and for COS on any 16 digital input
	* lines of MSB. Interrupts are not currently supported by this
	* driver.
	*
	* Configuration Options: not applicable, uses comedi PCI auto config
	*/

	#include <linux/module.h>

	#include "../comedi_pci.h"

	/*
	* Register I/O map (32-bit access only)
	*/
	#define PCI7X3X_DIO_REG 0x00
	#define PCI743X_DIO_REG 0x04

	enum apci1516_boardid {
	BOARD_PCI7230,
	BOARD_PCI7233,
	BOARD_PCI7234,
	BOARD_PCI7432,
	BOARD_PCI7433,
	BOARD_PCI7434,
	};

	struct adl_pci7x3x_boardinfo {
	const char *name;
	int nsubdevs;
	int di_nchan;
	int do_nchan;
	};

	static const struct adl_pci7x3x_boardinfo adl_pci7x3x_boards[] = {
	[BOARD_PCI7230] = {
	.name = "adl_pci7230",
	.nsubdevs = 2,
	.di_nchan = 16,
	.do_nchan = 16,
	},
	[BOARD_PCI7233] = {
	.name = "adl_pci7233",
	.nsubdevs = 1,
	.di_nchan = 32,
	},
	[BOARD_PCI7234] = {
	.name = "adl_pci7234",
	.nsubdevs = 1,
	.do_nchan = 32,
	},
	[BOARD_PCI7432] = {
	.name = "adl_pci7432",
	.nsubdevs = 2,
	.di_nchan = 32,
	.do_nchan = 32,
	},
	[BOARD_PCI7433] = {
	.name = "adl_pci7433",
	.nsubdevs = 2,
	.di_nchan = 64,
	},
	[BOARD_PCI7434] = {
	.name = "adl_pci7434",
	.nsubdevs = 2,
	.do_nchan = 64,
	}
	};

	static int adl_pci7x3x_do_insn_bits(struct comedi_device *dev,
	struct comedi_subdevice *s,
	struct comedi_insn *insn,
	unsigned int *data)
	{
	unsigned long reg = (unsigned long)s->private;

	if (comedi_dio_update_state(s, data)) {
	unsigned int val = s->state;

	if (s->n_chan == 16) {
	/*
	* It seems the PCI-7230 needs the 16-bit DO state
	* to be shifted left by 16 bits before being written
	* to the 32-bit register. Set the value in both
	* halves of the register to be sure.
	*/
	val \|= val << 16;
	}
	outl(val, dev->iobase + reg);
	}

	data[1] = s->state;

	return insn->n;
	}

	static int adl_pci7x3x_di_insn_bits(struct comedi_device *dev,
	struct comedi_subdevice *s,
	struct comedi_insn *insn,
	unsigned int *data)
	{
	unsigned long reg = (unsigned long)s->private;

	data[1] = inl(dev->iobase + reg);

	return insn->n;
	}

	static int adl_pci7x3x_auto_attach(struct comedi_device *dev,
	unsigned long context)
	{
	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
	const struct adl_pci7x3x_boardinfo *board = NULL;
	struct comedi_subdevice *s;
	int subdev;
	int nchan;
	int ret;

	if (context < ARRAY_SIZE(adl_pci7x3x_boards))
	board = &adl_pci7x3x_boards[context];
	if (!board)
	return -ENODEV;
	dev->board_ptr = board;
	dev->board_name = board->name;

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

	ret = comedi_alloc_subdevices(dev, board->nsubdevs);
	if (ret)
	return ret;

	subdev = 0;

	if (board->di_nchan) {
	nchan = min(board->di_nchan, 32);

	s = &dev->subdevices[subdev];
	/* Isolated digital inputs 0 to 15/31 */
	s->type = COMEDI_SUBD_DI;
	s->subdev_flags = SDF_READABLE;
	s->n_chan = nchan;
	s->maxdata = 1;
	s->insn_bits = adl_pci7x3x_di_insn_bits;
	s->range_table = &range_digital;

	s->private = (void *)PCI7X3X_DIO_REG;

	subdev++;

	nchan = board->di_nchan - nchan;
	if (nchan) {
	s = &dev->subdevices[subdev];
	/* Isolated digital inputs 32 to 63 */
	s->type = COMEDI_SUBD_DI;
	s->subdev_flags = SDF_READABLE;
	s->n_chan = nchan;
	s->maxdata = 1;
	s->insn_bits = adl_pci7x3x_di_insn_bits;
	s->range_table = &range_digital;

	s->private = (void *)PCI743X_DIO_REG;

	subdev++;
	}
	}

	if (board->do_nchan) {
	nchan = min(board->do_nchan, 32);

	s = &dev->subdevices[subdev];
	/* Isolated digital outputs 0 to 15/31 */
	s->type = COMEDI_SUBD_DO;
	s->subdev_flags = SDF_WRITABLE;
	s->n_chan = nchan;
	s->maxdata = 1;
	s->insn_bits = adl_pci7x3x_do_insn_bits;
	s->range_table = &range_digital;

	s->private = (void *)PCI7X3X_DIO_REG;

	subdev++;

	nchan = board->do_nchan - nchan;
	if (nchan) {
	s = &dev->subdevices[subdev];
	/* Isolated digital outputs 32 to 63 */
	s->type = COMEDI_SUBD_DO;
	s->subdev_flags = SDF_WRITABLE;
	s->n_chan = nchan;
	s->maxdata = 1;
	s->insn_bits = adl_pci7x3x_do_insn_bits;
	s->range_table = &range_digital;

	s->private = (void *)PCI743X_DIO_REG;

	subdev++;
	}
	}

	return 0;
	}

	static struct comedi_driver adl_pci7x3x_driver = {
	.driver_name = "adl_pci7x3x",
	.module = THIS_MODULE,
	.auto_attach = adl_pci7x3x_auto_attach,
	.detach = comedi_pci_detach,
	};

	static int adl_pci7x3x_pci_probe(struct pci_dev *dev,
	const struct pci_device_id *id)
	{
	return comedi_pci_auto_config(dev, &adl_pci7x3x_driver,
	id->driver_data);
	}

	static const struct pci_device_id adl_pci7x3x_pci_table[] = {
	{ PCI_VDEVICE(ADLINK, 0x7230), BOARD_PCI7230 },
	{ PCI_VDEVICE(ADLINK, 0x7233), BOARD_PCI7233 },
	{ PCI_VDEVICE(ADLINK, 0x7234), BOARD_PCI7234 },
	{ PCI_VDEVICE(ADLINK, 0x7432), BOARD_PCI7432 },
	{ PCI_VDEVICE(ADLINK, 0x7433), BOARD_PCI7433 },
	{ PCI_VDEVICE(ADLINK, 0x7434), BOARD_PCI7434 },
	{ 0 }
	};
	MODULE_DEVICE_TABLE(pci, adl_pci7x3x_pci_table);

	static struct pci_driver adl_pci7x3x_pci_driver = {
	.name = "adl_pci7x3x",
	.id_table = adl_pci7x3x_pci_table,
	.probe = adl_pci7x3x_pci_probe,
	.remove = comedi_pci_auto_unconfig,
	};
	module_comedi_pci_driver(adl_pci7x3x_driver, adl_pci7x3x_pci_driver);

	MODULE_DESCRIPTION("ADLINK PCI-723x/743x Isolated Digital I/O boards");
	MODULE_AUTHOR("H Hartley Sweeten <hsweeten@visionengravers.com>");
	MODULE_LICENSE("GPL");