[deliverable/linux.git] / drivers / staging / comedi / drivers / amplc_pc263.c

/*
    comedi/drivers/amplc_pc263.c
    Driver for Amplicon PC263 and PCI263 relay boards.

    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.

    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: amplc_pc263
Description: Amplicon PC263, PCI263
Author: Ian Abbott <abbotti@mev.co.uk>
Devices: [Amplicon] PC263 (pc263), PCI263 (pci263 or amplc_pc263)
Updated: Wed, 22 Oct 2008 14:10:53 +0100
Status: works

Configuration options - PC263:
  [0] - I/O port base address

Configuration options - PCI263:
  [0] - PCI bus of device (optional)
  [1] - PCI slot of device (optional)
  If bus/slot is not specified, the first available PCI device will be
  used.

Each 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 "../comedidev.h"

#include "comedi_pci.h"

#define PC263_DRIVER_NAME	"amplc_pc263"

/* PCI263 PCI configuration register information */
#define PCI_VENDOR_ID_AMPLICON 0x14dc
#define PCI_DEVICE_ID_AMPLICON_PCI263 0x000c
#define PCI_DEVICE_ID_INVALID 0xffff

/* PC263 / PCI263 registers */
#define PC263_IO_SIZE	2

/*
 * Board descriptions for Amplicon PC263 / PCI263.
 */

enum pc263_bustype { isa_bustype, pci_bustype };
enum pc263_model { pc263_model, pci263_model, anypci_model };

typedef struct pc263_board_struct {
	const char *name;
	const char *fancy_name;
	unsigned short devid;
	enum pc263_bustype bustype;
	enum pc263_model model;
} pc263_board;
static const pc263_board pc263_boards[] = {
	{
	      name:	"pc263",
	      fancy_name:"PC263",
	      bustype:	isa_bustype,
	      model:	pc263_model,
		},
#ifdef CONFIG_COMEDI_PCI
	{
	      name:	"pci263",
	      fancy_name:"PCI263",
	      devid:	PCI_DEVICE_ID_AMPLICON_PCI263,
	      bustype:	pci_bustype,
	      model:	pci263_model,
		},
#endif
#ifdef CONFIG_COMEDI_PCI
	{
	      name:	PC263_DRIVER_NAME,
	      fancy_name:PC263_DRIVER_NAME,
	      devid:	PCI_DEVICE_ID_INVALID,
	      bustype:	pci_bustype,
	      model:	anypci_model,	/* wildcard */
		},
#endif
};

#ifdef CONFIG_COMEDI_PCI
static DEFINE_PCI_DEVICE_TABLE(pc263_pci_table) = {
	{PCI_VENDOR_ID_AMPLICON, PCI_DEVICE_ID_AMPLICON_PCI263, PCI_ANY_ID,
		PCI_ANY_ID, 0, 0, 0},
	{0}
};

MODULE_DEVICE_TABLE(pci, pc263_pci_table);
#endif /* CONFIG_COMEDI_PCI */

/*
 * Useful for shorthand access to the particular board structure
 */
#define thisboard ((const pc263_board *)dev->board_ptr)

/* this structure is for data unique to this hardware driver.  If
   several hardware drivers keep similar information in this structure,
   feel free to suggest moving the variable to the struct comedi_device struct.  */
#ifdef CONFIG_COMEDI_PCI
typedef struct {
	/* PCI device. */
	struct pci_dev *pci_dev;
} pc263_private;

#define devpriv ((pc263_private *)dev->private)
#endif /* CONFIG_COMEDI_PCI */

/*
 * The struct comedi_driver structure tells the Comedi core module
 * which functions to call to configure/deconfigure (attach/detach)
 * the board, and also about the kernel module that contains
 * the device code.
 */
static int pc263_attach(struct comedi_device * dev, comedi_devconfig * it);
static int pc263_detach(struct comedi_device * dev);
static struct comedi_driver driver_amplc_pc263 = {
      driver_name:PC263_DRIVER_NAME,
      module:THIS_MODULE,
      attach:pc263_attach,
      detach:pc263_detach,
      board_name:&pc263_boards[0].name,
      offset:sizeof(pc263_board),
      num_names:sizeof(pc263_boards) / sizeof(pc263_board),
};

static int pc263_request_region(unsigned minor, unsigned long from,
	unsigned long extent);
static int pc263_dio_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s,
	struct comedi_insn * insn, unsigned int * data);
static int pc263_dio_insn_config(struct comedi_device * dev, struct comedi_subdevice * s,
	struct comedi_insn * insn, unsigned int * data);

/*
 * This function looks for a PCI device matching the requested board name,
 * bus and slot.
 */
#ifdef CONFIG_COMEDI_PCI
static int
pc263_find_pci(struct comedi_device * dev, int bus, int slot,
	struct pci_dev **pci_dev_p)
{
	struct pci_dev *pci_dev = NULL;

	*pci_dev_p = NULL;

	/* Look for matching PCI device. */
	for (pci_dev = pci_get_device(PCI_VENDOR_ID_AMPLICON, PCI_ANY_ID, NULL);
		pci_dev != NULL;
		pci_dev = pci_get_device(PCI_VENDOR_ID_AMPLICON,
			PCI_ANY_ID, pci_dev)) {
		/* If bus/slot specified, check them. */
		if (bus || slot) {
			if (bus != pci_dev->bus->number
				|| slot != PCI_SLOT(pci_dev->devfn))
				continue;
		}
		if (thisboard->model == anypci_model) {
			/* Match any supported model. */
			int i;

			for (i = 0; i < ARRAY_SIZE(pc263_boards); i++) {
				if (pc263_boards[i].bustype != pci_bustype)
					continue;
				if (pci_dev->device == pc263_boards[i].devid) {
					/* Change board_ptr to matched board. */
					dev->board_ptr = &pc263_boards[i];
					break;
				}
			}
			if (i == ARRAY_SIZE(pc263_boards))
				continue;
		} else {
			/* Match specific model name. */
			if (pci_dev->device != thisboard->devid)
				continue;
		}

		/* Found a match. */
		*pci_dev_p = pci_dev;
		return 0;
	}
	/* No match found. */
	if (bus || slot) {
		printk(KERN_ERR
			"comedi%d: error! no %s found at pci %02x:%02x!\n",
			dev->minor, thisboard->name, bus, slot);
	} else {
		printk(KERN_ERR "comedi%d: error! no %s found!\n",
			dev->minor, thisboard->name);
	}
	return -EIO;
}
#endif

/*
 * Attach is called by the Comedi core to configure the driver
 * for a particular board.  If you specified a board_name array
 * in the driver structure, dev->board_ptr contains that
 * address.
 */
static int pc263_attach(struct comedi_device * dev, comedi_devconfig * it)
{
	struct comedi_subdevice *s;
	unsigned long iobase = 0;
#ifdef CONFIG_COMEDI_PCI
	struct pci_dev *pci_dev = NULL;
	int bus = 0, slot = 0;
#endif
	int ret;

	printk(KERN_DEBUG "comedi%d: %s: attach\n", dev->minor,
		PC263_DRIVER_NAME);
/*
 * Allocate the private structure area.  alloc_private() is a
 * convenient macro defined in comedidev.h.
 */
#ifdef CONFIG_COMEDI_PCI
	if ((ret = alloc_private(dev, sizeof(pc263_private))) < 0) {
		printk(KERN_ERR "comedi%d: error! out of memory!\n",
			dev->minor);
		return ret;
	}
#endif
	/* Process options. */
	switch (thisboard->bustype) {
	case isa_bustype:
		iobase = it->options[0];
		break;
#ifdef CONFIG_COMEDI_PCI
	case pci_bustype:
		bus = it->options[0];
		slot = it->options[1];

		if ((ret = pc263_find_pci(dev, bus, slot, &pci_dev)) < 0)
			return ret;
		devpriv->pci_dev = pci_dev;
		break;
#endif /* CONFIG_COMEDI_PCI */
	default:
		printk(KERN_ERR
			"comedi%d: %s: BUG! cannot determine board type!\n",
			dev->minor, PC263_DRIVER_NAME);
		return -EINVAL;
		break;
	}

/*
 * Initialize dev->board_name.
 */
	dev->board_name = thisboard->name;

	/* Enable device and reserve I/O spaces. */
#ifdef CONFIG_COMEDI_PCI
	if (pci_dev) {
		if ((ret = comedi_pci_enable(pci_dev, PC263_DRIVER_NAME)) < 0) {
			printk(KERN_ERR
				"comedi%d: error! cannot enable PCI device and request regions!\n",
				dev->minor);
			return ret;
		}
		iobase = pci_resource_start(pci_dev, 2);
	} else
#endif
	{
		ret = pc263_request_region(dev->minor, iobase, PC263_IO_SIZE);
		if (ret < 0) {
			return ret;
		}
	}
	dev->iobase = iobase;

/*
 * Allocate the subdevice structures.  alloc_subdevice() is a
 * convenient macro defined in comedidev.h.
 */
	if ((ret = alloc_subdevices(dev, 1)) < 0) {
		printk(KERN_ERR "comedi%d: error! out of memory!\n",
			dev->minor);
		return ret;
	}

	s = dev->subdevices + 0;
	/* digital i/o subdevice */
	s->type = COMEDI_SUBD_DIO;
	s->subdev_flags = SDF_READABLE | SDF_WRITABLE | SDF_RT;
	s->n_chan = 16;
	s->maxdata = 1;
	s->range_table = &range_digital;
	s->insn_bits = pc263_dio_insn_bits;
	s->insn_config = pc263_dio_insn_config;
	/* all outputs */
	s->io_bits = 0xffff;
	/* read initial relay state */
	s->state = inb(dev->iobase);
	s->state = s->state | (inb(dev->iobase) << 8);

	printk(KERN_INFO "comedi%d: %s ", dev->minor, dev->board_name);
	if (thisboard->bustype == isa_bustype) {
		printk("(base %#lx) ", iobase);
	} else {
#ifdef CONFIG_COMEDI_PCI
		printk("(pci %s) ", pci_name(pci_dev));
#endif
	}

	printk("attached\n");

	return 1;
}

/*
 * _detach is called to deconfigure a device.  It should deallocate
 * resources.
 * This function is also called when _attach() fails, so it should be
 * careful not to release resources that were not necessarily
 * allocated by _attach().  dev->private and dev->subdevices are
 * deallocated automatically by the core.
 */
static int pc263_detach(struct comedi_device * dev)
{
	printk(KERN_DEBUG "comedi%d: %s: detach\n", dev->minor,
		PC263_DRIVER_NAME);

#ifdef CONFIG_COMEDI_PCI
	if (devpriv)
#endif
	{
#ifdef CONFIG_COMEDI_PCI
		if (devpriv->pci_dev) {
			if (dev->iobase) {
				comedi_pci_disable(devpriv->pci_dev);
			}
			pci_dev_put(devpriv->pci_dev);
		} else
#endif
		{
			if (dev->iobase) {
				release_region(dev->iobase, PC263_IO_SIZE);
			}
		}
	}
	if (dev->board_name) {
		printk(KERN_INFO "comedi%d: %s removed\n",
			dev->minor, dev->board_name);
	}
	return 0;
}

/*
 * This function checks and requests an I/O region, reporting an error
 * if there is a conflict.
 */
static int pc263_request_region(unsigned minor, unsigned long from,
	unsigned long extent)
{
	if (!from || !request_region(from, extent, PC263_DRIVER_NAME)) {
		printk(KERN_ERR "comedi%d: I/O port conflict (%#lx,%lu)!\n",
			minor, from, extent);
		return -EIO;
	}
	return 0;
}

/* DIO devices are slightly special.  Although it is possible to
 * implement the insn_read/insn_write interface, it is much more
 * useful to applications if you implement the insn_bits interface.
 * This allows packed reading/writing of the DIO channels.  The
 * comedi core can convert between insn_bits and insn_read/write */
static int pc263_dio_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s,
	struct comedi_insn * insn, unsigned int * data)
{
	if (insn->n != 2)
		return -EINVAL;

	/* The insn data is a mask in data[0] and the new data
	 * in data[1], each channel cooresponding to a bit. */
	if (data[0]) {
		s->state &= ~data[0];
		s->state |= data[0] & data[1];
		/* Write out the new digital output lines */
		outb(s->state & 0xFF, dev->iobase);
		outb(s->state >> 8, dev->iobase + 1);
	}

	/* on return, data[1] contains the value of the digital
	 * input and output lines. */
	/* or we could just return the software copy of the output values if
	 * it was a purely digital output subdevice */
	data[1] = s->state;

	return 2;
}

static int pc263_dio_insn_config(struct comedi_device * dev, struct comedi_subdevice * s,
	struct comedi_insn * insn, unsigned int * data)
{
	if (insn->n != 1)
		return -EINVAL;
	return 1;
}

/*
 * A convenient macro that defines init_module() and cleanup_module(),
 * as necessary.
 */
#ifdef CONFIG_COMEDI_PCI
COMEDI_PCI_INITCLEANUP(driver_amplc_pc263, pc263_pci_table);
#else
COMEDI_INITCLEANUP(driver_amplc_pc263);
#endif
Commit	Line	Data
cfd02b71 IA	1	/*
	2	comedi/drivers/amplc_pc263.c
	3	Driver for Amplicon PC263 and PCI263 relay boards.
	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.
	19
	20	You should have received a copy of the GNU General Public License
	21	along with this program; if not, write to the Free Software
	22	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	23
	24	*/
	25	/*
	26	Driver: amplc_pc263
	27	Description: Amplicon PC263, PCI263
	28	Author: Ian Abbott <abbotti@mev.co.uk>
	29	Devices: [Amplicon] PC263 (pc263), PCI263 (pci263 or amplc_pc263)
	30	Updated: Wed, 22 Oct 2008 14:10:53 +0100
	31	Status: works
	32
	33	Configuration options - PC263:
	34	[0] - I/O port base address
	35
	36	Configuration options - PCI263:
	37	[0] - PCI bus of device (optional)
	38	[1] - PCI slot of device (optional)
	39	If bus/slot is not specified, the first available PCI device will be
	40	used.
	41
	42	Each board appears as one subdevice, with 16 digital outputs, each
	43	connected to a reed-relay. Relay contacts are closed when output is 1.
	44	The state of the outputs can be read.
	45	*/
	46
	47	#include "../comedidev.h"
	48
	49	#include "comedi_pci.h"
	50
	51	#define PC263_DRIVER_NAME "amplc_pc263"
	52
	53	/* PCI263 PCI configuration register information */
	54	#define PCI_VENDOR_ID_AMPLICON 0x14dc
	55	#define PCI_DEVICE_ID_AMPLICON_PCI263 0x000c
	56	#define PCI_DEVICE_ID_INVALID 0xffff
	57
	58	/* PC263 / PCI263 registers */
	59	#define PC263_IO_SIZE 2
	60
	61	/*
	62	* Board descriptions for Amplicon PC263 / PCI263.
	63	*/
	64
65	enum pc263_bustype { isa_bustype, pci_bustype };
66	enum pc263_model { pc263_model, pci263_model, anypci_model };
67
68	typedef struct pc263_board_struct {
69	const char *name;
70	const char *fancy_name;
71	unsigned short devid;
72	enum pc263_bustype bustype;
73	enum pc263_model model;
74	} pc263_board;
75	static const pc263_board pc263_boards[] = {
76	{
77	name: "pc263",
78	fancy_name:"PC263",
79	bustype: isa_bustype,
80	model: pc263_model,
81	},
82	#ifdef CONFIG_COMEDI_PCI
83	{
84	name: "pci263",
85	fancy_name:"PCI263",
86	devid: PCI_DEVICE_ID_AMPLICON_PCI263,
87	bustype: pci_bustype,
88	model: pci263_model,
89	},
90	#endif
91	#ifdef CONFIG_COMEDI_PCI
92	{
93	name: PC263_DRIVER_NAME,
94	fancy_name:PC263_DRIVER_NAME,
95	devid: PCI_DEVICE_ID_INVALID,
96	bustype: pci_bustype,
97	model: anypci_model, /* wildcard */
98	},
99	#endif
100	};
101
102	#ifdef CONFIG_COMEDI_PCI
103	static DEFINE_PCI_DEVICE_TABLE(pc263_pci_table) = {
104	{PCI_VENDOR_ID_AMPLICON, PCI_DEVICE_ID_AMPLICON_PCI263, PCI_ANY_ID,
105	PCI_ANY_ID, 0, 0, 0},
106	{0}
107	};
108
109	MODULE_DEVICE_TABLE(pci, pc263_pci_table);
110	#endif /* CONFIG_COMEDI_PCI */
111
112	/*
113	* Useful for shorthand access to the particular board structure
114	*/
115	#define thisboard ((const pc263_board *)dev->board_ptr)
116
117	/* this structure is for data unique to this hardware driver. If
118	several hardware drivers keep similar information in this structure,
71b5f4f1	119	feel free to suggest moving the variable to the struct comedi_device struct. */
cfd02b71 IA	120	#ifdef CONFIG_COMEDI_PCI
	121	typedef struct {
	122	/* PCI device. */
	123	struct pci_dev *pci_dev;
	124	} pc263_private;
	125
	126	#define devpriv ((pc263_private *)dev->private)
	127	#endif /* CONFIG_COMEDI_PCI */
	128
	129	/*
139dfbdf	130	* The struct comedi_driver structure tells the Comedi core module
cfd02b71 IA	131	* which functions to call to configure/deconfigure (attach/detach)
	132	* the board, and also about the kernel module that contains
	133	* the device code.
	134	*/
71b5f4f1 BP	135	static int pc263_attach(struct comedi_device * dev, comedi_devconfig * it);
71b5f4f1 BP	136	static int pc263_detach(struct comedi_device * dev);
139dfbdf	137	static struct comedi_driver driver_amplc_pc263 = {
cfd02b71 IA	138	driver_name:PC263_DRIVER_NAME,
	139	module:THIS_MODULE,
	140	attach:pc263_attach,
	141	detach:pc263_detach,
	142	board_name:&pc263_boards[0].name,
	143	offset:sizeof(pc263_board),
	144	num_names:sizeof(pc263_boards) / sizeof(pc263_board),
	145	};
	146
	147	static int pc263_request_region(unsigned minor, unsigned long from,
	148	unsigned long extent);
34c43922	149	static int pc263_dio_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s,
90035c08	150	struct comedi_insn * insn, unsigned int * data);
34c43922	151	static int pc263_dio_insn_config(struct comedi_device * dev, struct comedi_subdevice * s,
90035c08	152	struct comedi_insn * insn, unsigned int * data);
cfd02b71 IA	153
	154	/*
	155	* This function looks for a PCI device matching the requested board name,
	156	* bus and slot.
	157	*/
	158	#ifdef CONFIG_COMEDI_PCI
	159	static int
71b5f4f1	160	pc263_find_pci(struct comedi_device * dev, int bus, int slot,
cfd02b71 IA	161	struct pci_dev **pci_dev_p)
	162	{
	163	struct pci_dev *pci_dev = NULL;
	164
	165	*pci_dev_p = NULL;
	166
	167	/* Look for matching PCI device. */
	168	for (pci_dev = pci_get_device(PCI_VENDOR_ID_AMPLICON, PCI_ANY_ID, NULL);
	169	pci_dev != NULL;
	170	pci_dev = pci_get_device(PCI_VENDOR_ID_AMPLICON,
	171	PCI_ANY_ID, pci_dev)) {
	172	/* If bus/slot specified, check them. */
	173	if (bus \|\| slot) {
	174	if (bus != pci_dev->bus->number
	175	\|\| slot != PCI_SLOT(pci_dev->devfn))
	176	continue;
	177	}
	178	if (thisboard->model == anypci_model) {
	179	/* Match any supported model. */
	180	int i;
	181
	182	for (i = 0; i < ARRAY_SIZE(pc263_boards); i++) {
	183	if (pc263_boards[i].bustype != pci_bustype)
	184	continue;
	185	if (pci_dev->device == pc263_boards[i].devid) {
	186	/* Change board_ptr to matched board. */
	187	dev->board_ptr = &pc263_boards[i];
	188	break;
	189	}
	190	}
	191	if (i == ARRAY_SIZE(pc263_boards))
	192	continue;
	193	} else {
	194	/* Match specific model name. */
	195	if (pci_dev->device != thisboard->devid)
	196	continue;
	197	}
	198
	199	/* Found a match. */
	200	*pci_dev_p = pci_dev;
	201	return 0;
	202	}
	203	/* No match found. */
	204	if (bus \|\| slot) {
	205	printk(KERN_ERR
	206	"comedi%d: error! no %s found at pci %02x:%02x!\n",
	207	dev->minor, thisboard->name, bus, slot);
	208	} else {
	209	printk(KERN_ERR "comedi%d: error! no %s found!\n",
	210	dev->minor, thisboard->name);
	211	}
	212	return -EIO;
	213	}
	214	#endif
	215
	216	/*
	217	* Attach is called by the Comedi core to configure the driver
	218	* for a particular board. If you specified a board_name array
	219	* in the driver structure, dev->board_ptr contains that
	220	* address.
	221	*/
71b5f4f1	222	static int pc263_attach(struct comedi_device * dev, comedi_devconfig * it)
cfd02b71	223	{
34c43922	224	struct comedi_subdevice *s;
cfd02b71 IA	225	unsigned long iobase = 0;
	226	#ifdef CONFIG_COMEDI_PCI
	227	struct pci_dev *pci_dev = NULL;
	228	int bus = 0, slot = 0;
	229	#endif
	230	int ret;
	231
	232	printk(KERN_DEBUG "comedi%d: %s: attach\n", dev->minor,
	233	PC263_DRIVER_NAME);
	234	/*
	235	* Allocate the private structure area. alloc_private() is a
	236	* convenient macro defined in comedidev.h.
	237	*/
	238	#ifdef CONFIG_COMEDI_PCI
	239	if ((ret = alloc_private(dev, sizeof(pc263_private))) < 0) {
	240	printk(KERN_ERR "comedi%d: error! out of memory!\n",
	241	dev->minor);
	242	return ret;
	243	}
	244	#endif
	245	/* Process options. */
	246	switch (thisboard->bustype) {
	247	case isa_bustype:
	248	iobase = it->options[0];
	249	break;
	250	#ifdef CONFIG_COMEDI_PCI
	251	case pci_bustype:
	252	bus = it->options[0];
	253	slot = it->options[1];
	254
	255	if ((ret = pc263_find_pci(dev, bus, slot, &pci_dev)) < 0)
	256	return ret;
	257	devpriv->pci_dev = pci_dev;
	258	break;
	259	#endif /* CONFIG_COMEDI_PCI */
	260	default:
	261	printk(KERN_ERR
	262	"comedi%d: %s: BUG! cannot determine board type!\n",
	263	dev->minor, PC263_DRIVER_NAME);
	264	return -EINVAL;
	265	break;
	266	}
	267
	268	/*
	269	* Initialize dev->board_name.
	270	*/
	271	dev->board_name = thisboard->name;
	272
	273	/* Enable device and reserve I/O spaces. */
	274	#ifdef CONFIG_COMEDI_PCI
	275	if (pci_dev) {
	276	if ((ret = comedi_pci_enable(pci_dev, PC263_DRIVER_NAME)) < 0) {
	277	printk(KERN_ERR
	278	"comedi%d: error! cannot enable PCI device and request regions!\n",
	279	dev->minor);
	280	return ret;
	281	}
	282	iobase = pci_resource_start(pci_dev, 2);
	283	} else
	284	#endif
	285	{
	286	ret = pc263_request_region(dev->minor, iobase, PC263_IO_SIZE);
	287	if (ret < 0) {
	288	return ret;
289	}
290	}
291	dev->iobase = iobase;
292
293	/*
294	* Allocate the subdevice structures. alloc_subdevice() is a
295	* convenient macro defined in comedidev.h.
296	*/
297	if ((ret = alloc_subdevices(dev, 1)) < 0) {
298	printk(KERN_ERR "comedi%d: error! out of memory!\n",
299	dev->minor);
300	return ret;
301	}
302
303	s = dev->subdevices + 0;
304	/* digital i/o subdevice */
305	s->type = COMEDI_SUBD_DIO;
306	s->subdev_flags = SDF_READABLE \| SDF_WRITABLE \| SDF_RT;
307	s->n_chan = 16;
308	s->maxdata = 1;
309	s->range_table = &range_digital;
310	s->insn_bits = pc263_dio_insn_bits;
311	s->insn_config = pc263_dio_insn_config;
312	/* all outputs */
313	s->io_bits = 0xffff;
314	/* read initial relay state */
315	s->state = inb(dev->iobase);
316	s->state = s->state \| (inb(dev->iobase) << 8);
317
318	printk(KERN_INFO "comedi%d: %s ", dev->minor, dev->board_name);
319	if (thisboard->bustype == isa_bustype) {
320	printk("(base %#lx) ", iobase);
321	} else {
322	#ifdef CONFIG_COMEDI_PCI
323	printk("(pci %s) ", pci_name(pci_dev));
324	#endif
325	}
326
327	printk("attached\n");
328
329	return 1;
330	}
331
332	/*
333	* _detach is called to deconfigure a device. It should deallocate
334	* resources.
335	* This function is also called when _attach() fails, so it should be
336	* careful not to release resources that were not necessarily
337	* allocated by _attach(). dev->private and dev->subdevices are
338	* deallocated automatically by the core.
339	*/
71b5f4f1	340	static int pc263_detach(struct comedi_device * dev)
cfd02b71 IA	341	{
	342	printk(KERN_DEBUG "comedi%d: %s: detach\n", dev->minor,
	343	PC263_DRIVER_NAME);
	344
	345	#ifdef CONFIG_COMEDI_PCI
	346	if (devpriv)
	347	#endif
	348	{
	349	#ifdef CONFIG_COMEDI_PCI
	350	if (devpriv->pci_dev) {
	351	if (dev->iobase) {
	352	comedi_pci_disable(devpriv->pci_dev);
	353	}
	354	pci_dev_put(devpriv->pci_dev);
	355	} else
	356	#endif
	357	{
	358	if (dev->iobase) {
	359	release_region(dev->iobase, PC263_IO_SIZE);
	360	}
	361	}
	362	}
	363	if (dev->board_name) {
	364	printk(KERN_INFO "comedi%d: %s removed\n",
	365	dev->minor, dev->board_name);
	366	}
	367	return 0;
	368	}
	369
	370	/*
	371	* This function checks and requests an I/O region, reporting an error
	372	* if there is a conflict.
	373	*/
	374	static int pc263_request_region(unsigned minor, unsigned long from,
	375	unsigned long extent)
	376	{
	377	if (!from \|\| !request_region(from, extent, PC263_DRIVER_NAME)) {
	378	printk(KERN_ERR "comedi%d: I/O port conflict (%#lx,%lu)!\n",
	379	minor, from, extent);
	380	return -EIO;
	381	}
	382	return 0;
	383	}
	384
	385	/* DIO devices are slightly special. Although it is possible to
	386	* implement the insn_read/insn_write interface, it is much more
	387	* useful to applications if you implement the insn_bits interface.
	388	* This allows packed reading/writing of the DIO channels. The
	389	* comedi core can convert between insn_bits and insn_read/write */
34c43922	390	static int pc263_dio_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s,
90035c08	391	struct comedi_insn * insn, unsigned int * data)
cfd02b71 IA	392	{
	393	if (insn->n != 2)
	394	return -EINVAL;
	395
	396	/* The insn data is a mask in data[0] and the new data
	397	* in data[1], each channel cooresponding to a bit. */
	398	if (data[0]) {
	399	s->state &= ~data[0];
	400	s->state \|= data[0] & data[1];
	401	/* Write out the new digital output lines */
	402	outb(s->state & 0xFF, dev->iobase);
	403	outb(s->state >> 8, dev->iobase + 1);
	404	}
	405
	406	/* on return, data[1] contains the value of the digital
	407	* input and output lines. */
	408	/* or we could just return the software copy of the output values if
	409	* it was a purely digital output subdevice */
	410	data[1] = s->state;
	411
	412	return 2;
	413	}
	414
34c43922	415	static int pc263_dio_insn_config(struct comedi_device * dev, struct comedi_subdevice * s,
90035c08	416	struct comedi_insn * insn, unsigned int * data)
cfd02b71 IA	417	{
	418	if (insn->n != 1)
	419	return -EINVAL;
	420	return 1;
	421	}
	422
	423	/*
	424	* A convenient macro that defines init_module() and cleanup_module(),
	425	* as necessary.
	426	*/
	427	#ifdef CONFIG_COMEDI_PCI
	428	COMEDI_PCI_INITCLEANUP(driver_amplc_pc263, pc263_pci_table);
	429	#else
	430	COMEDI_INITCLEANUP(driver_amplc_pc263);
	431	#endif