[linux-2.6-block.git] / drivers / staging / comedi / drivers / amplc_pci263.c

/*
    comedi/drivers/amplc_pci263.c
    Driver for Amplicon PCI263 relay board.

    Copyright (C) 2002 MEV Ltd. <http://www.mev.co.uk/>

    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: amplc_pci263
Description: Amplicon PCI263
Author: Ian Abbott <abbotti@mev.co.uk>
Devices: [Amplicon] PCI263 (amplc_pci263)
Updated: Fri, 12 Apr 2013 15:19:36 +0100
Status: works

Configuration options: not applicable, uses PCI auto config

The board appears as one subdevice, with 16 digital outputs, each
connected to a reed-relay. Relay contacts are closed when output is 1.
The state of the outputs can be read.
*/

#include <linux/module.h>

#include "../comedi_pci.h"

static int pci263_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)) {
		outb(s->state & 0xff, dev->iobase);
		outb((s->state >> 8) & 0xff, dev->iobase + 1);
	}

	data[1] = s->state;

	return insn->n;
}

static int pci263_auto_attach(struct comedi_device *dev,
			      unsigned long context_unused)
{
	struct pci_dev *pci_dev = comedi_to_pci_dev(dev);
	struct comedi_subdevice *s;
	int ret;

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

	dev->iobase = pci_resource_start(pci_dev, 2);
	ret = comedi_alloc_subdevices(dev, 1);
	if (ret)
		return ret;

	s = &dev->subdevices[0];
	/* digital output subdevice */
	s->type = COMEDI_SUBD_DO;
	s->subdev_flags = SDF_WRITABLE;
	s->n_chan = 16;
	s->maxdata = 1;
	s->range_table = &range_digital;
	s->insn_bits = pci263_do_insn_bits;
	/* read initial relay state */
	s->state = inb(dev->iobase) | (inb(dev->iobase + 1) << 8);

	return 0;
}

static struct comedi_driver amplc_pci263_driver = {
	.driver_name	= "amplc_pci263",
	.module		= THIS_MODULE,
	.auto_attach	= pci263_auto_attach,
	.detach		= comedi_pci_detach,
};

static const struct pci_device_id pci263_pci_table[] = {
	{ PCI_DEVICE(PCI_VENDOR_ID_AMPLICON, 0x000c) },
	{0}
};
MODULE_DEVICE_TABLE(pci, pci263_pci_table);

static int amplc_pci263_pci_probe(struct pci_dev *dev,
				  const struct pci_device_id *id)
{
	return comedi_pci_auto_config(dev, &amplc_pci263_driver,
				      id->driver_data);
}

static struct pci_driver amplc_pci263_pci_driver = {
	.name		= "amplc_pci263",
	.id_table	= pci263_pci_table,
	.probe		= &amplc_pci263_pci_probe,
	.remove		= comedi_pci_auto_unconfig,
};
module_comedi_pci_driver(amplc_pci263_driver, amplc_pci263_pci_driver);

MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_DESCRIPTION("Comedi driver for Amplicon PCI263 relay board");
MODULE_LICENSE("GPL");
Commit	Line	Data
22691aec IA	1	/*
	2	comedi/drivers/amplc_pci263.c
	3	Driver for Amplicon PCI263 relay board.
	4
	5	Copyright (C) 2002 MEV Ltd. <http://www.mev.co.uk/>
	6
	7	COMEDI - Linux Control and Measurement Device Interface
	8	Copyright (C) 2000 David A. Schleef <ds@schleef.org>
	9
	10	This program is free software; you can redistribute it and/or modify
	11	it under the terms of the GNU General Public License as published by
	12	the Free Software Foundation; either version 2 of the License, or
	13	(at your option) any later version.
	14
	15	This program is distributed in the hope that it will be useful,
	16	but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	GNU General Public License for more details.
22691aec IA	19	*/
	20	/*
	21	Driver: amplc_pci263
	22	Description: Amplicon PCI263
	23	Author: Ian Abbott <abbotti@mev.co.uk>
	24	Devices: [Amplicon] PCI263 (amplc_pci263)
	25	Updated: Fri, 12 Apr 2013 15:19:36 +0100
	26	Status: works
	27
	28	Configuration options: not applicable, uses PCI auto config
	29
	30	The board appears as one subdevice, with 16 digital outputs, each
	31	connected to a reed-relay. Relay contacts are closed when output is 1.
	32	The state of the outputs can be read.
	33	*/
	34
ce157f80	35	#include <linux/module.h>
22691aec	36
61873d0a	37	#include "../comedi_pci.h"
22691aec	38
22691aec IA	39	static int pci263_do_insn_bits(struct comedi_device *dev,
22691aec IA	40	struct comedi_subdevice *s,
97f4289a HS	41	struct comedi_insn *insn,
97f4289a HS	42	unsigned int *data)
22691aec	43	{
97f4289a HS	44	if (comedi_dio_update_state(s, data)) {
	45	outb(s->state & 0xff, dev->iobase);
	46	outb((s->state >> 8) & 0xff, dev->iobase + 1);
22691aec	47	}
97f4289a HS	48
	49	data[1] = s->state;
	50
22691aec IA	51	return insn->n;
	52	}
	53
	54	static int pci263_auto_attach(struct comedi_device *dev,
	55	unsigned long context_unused)
	56	{
	57	struct pci_dev *pci_dev = comedi_to_pci_dev(dev);
	58	struct comedi_subdevice *s;
	59	int ret;
	60
	61	ret = comedi_pci_enable(dev);
	62	if (ret)
	63	return ret;
	64
	65	dev->iobase = pci_resource_start(pci_dev, 2);
	66	ret = comedi_alloc_subdevices(dev, 1);
	67	if (ret)
	68	return ret;
	69
	70	s = &dev->subdevices[0];
	71	/* digital output subdevice */
	72	s->type = COMEDI_SUBD_DO;
453fd2b3	73	s->subdev_flags = SDF_WRITABLE;
22691aec IA	74	s->n_chan = 16;
	75	s->maxdata = 1;
	76	s->range_table = &range_digital;
	77	s->insn_bits = pci263_do_insn_bits;
	78	/* read initial relay state */
	79	s->state = inb(dev->iobase) \| (inb(dev->iobase + 1) << 8);
	80
22691aec IA	81	return 0;
	82	}
	83
	84	static struct comedi_driver amplc_pci263_driver = {
3d03cfca	85	.driver_name = "amplc_pci263",
22691aec IA	86	.module = THIS_MODULE,
22691aec IA	87	.auto_attach = pci263_auto_attach,
aac307f9	88	.detach = comedi_pci_detach,
22691aec IA	89	};
22691aec IA	90
41e043fc	91	static const struct pci_device_id pci263_pci_table[] = {
472cd3db	92	{ PCI_DEVICE(PCI_VENDOR_ID_AMPLICON, 0x000c) },
22691aec IA	93	{0}
	94	};
	95	MODULE_DEVICE_TABLE(pci, pci263_pci_table);
	96
	97	static int amplc_pci263_pci_probe(struct pci_dev *dev,
	98	const struct pci_device_id *id)
	99	{
	100	return comedi_pci_auto_config(dev, &amplc_pci263_driver,
	101	id->driver_data);
	102	}
	103
	104	static struct pci_driver amplc_pci263_pci_driver = {
3d03cfca	105	.name = "amplc_pci263",
22691aec IA	106	.id_table = pci263_pci_table,
	107	.probe = &amplc_pci263_pci_probe,
	108	.remove = comedi_pci_auto_unconfig,
	109	};
	110	module_comedi_pci_driver(amplc_pci263_driver, amplc_pci263_pci_driver);
	111
	112	MODULE_AUTHOR("Comedi http://www.comedi.org");
	113	MODULE_DESCRIPTION("Comedi driver for Amplicon PCI263 relay board");
	114	MODULE_LICENSE("GPL");