[linux-2.6-block.git] / drivers / staging / comedi / drivers / dyna_pci10xx.c

/*
 * comedi/drivers/dyna_pci10xx.c
 * Copyright (C) 2011 Prashant Shah, pshah.mumbai@gmail.com
 *
 * 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: dyna_pci10xx
 Devices: Dynalog India PCI DAQ Cards, http://www.dynalogindia.com/
 Author: Prashant Shah <pshah.mumbai@gmail.com>
 Developed at Automation Labs, Chemical Dept., IIT Bombay, India.
 Prof. Kannan Moudgalya <kannan@iitb.ac.in>
 http://www.iitb.ac.in
 Status: Stable
 Version: 1.0
 Device Supported :
 - Dynalog PCI 1050

 Notes :
 - Dynalog India Pvt. Ltd. does not have a registered PCI Vendor ID and
 they are using the PLX Technlogies Vendor ID since that is the PCI Chip used
 in the card.
 - Dynalog India Pvt. Ltd. has provided the internal register specification for
 their cards in their manuals.
*/

#include <linux/module.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/mutex.h>

#include "../comedidev.h"

#define READ_TIMEOUT 50

static const struct comedi_lrange range_pci1050_ai = {
	3, {
		BIP_RANGE(10),
		BIP_RANGE(5),
		UNI_RANGE(10)
	}
};

static const char range_codes_pci1050_ai[] = { 0x00, 0x10, 0x30 };

struct dyna_pci10xx_private {
	struct mutex mutex;
	unsigned long BADR3;
};

static int dyna_pci10xx_ai_eoc(struct comedi_device *dev,
			       struct comedi_subdevice *s,
			       struct comedi_insn *insn,
			       unsigned long context)
{
	unsigned int status;

	status = inw_p(dev->iobase);
	if (status & (1 << 15))
		return 0;
	return -EBUSY;
}

static int dyna_pci10xx_insn_read_ai(struct comedi_device *dev,
			struct comedi_subdevice *s,
			struct comedi_insn *insn, unsigned int *data)
{
	struct dyna_pci10xx_private *devpriv = dev->private;
	int n;
	u16 d = 0;
	int ret = 0;
	unsigned int chan, range;

	/* get the channel number and range */
	chan = CR_CHAN(insn->chanspec);
	range = range_codes_pci1050_ai[CR_RANGE((insn->chanspec))];

	mutex_lock(&devpriv->mutex);
	/* convert n samples */
	for (n = 0; n < insn->n; n++) {
		/* trigger conversion */
		smp_mb();
		outw_p(0x0000 + range + chan, dev->iobase + 2);
		udelay(10);

		ret = comedi_timeout(dev, s, insn, dyna_pci10xx_ai_eoc, 0);
		if (ret) {
			data[n] = 0;
			break;
		}

		/* read data */
		d = inw_p(dev->iobase);
		/* mask the first 4 bits - EOC bits */
		d &= 0x0FFF;
		data[n] = d;
	}
	mutex_unlock(&devpriv->mutex);

	/* return the number of samples read/written */
	return ret ? ret : n;
}

/* analog output callback */
static int dyna_pci10xx_insn_write_ao(struct comedi_device *dev,
				 struct comedi_subdevice *s,
				 struct comedi_insn *insn, unsigned int *data)
{
	struct dyna_pci10xx_private *devpriv = dev->private;
	int n;
	unsigned int chan, range;

	chan = CR_CHAN(insn->chanspec);
	range = range_codes_pci1050_ai[CR_RANGE((insn->chanspec))];

	mutex_lock(&devpriv->mutex);
	for (n = 0; n < insn->n; n++) {
		smp_mb();
		/* trigger conversion and write data */
		outw_p(data[n], dev->iobase);
		udelay(10);
	}
	mutex_unlock(&devpriv->mutex);
	return n;
}

/* digital input bit interface */
static int dyna_pci10xx_di_insn_bits(struct comedi_device *dev,
			      struct comedi_subdevice *s,
			      struct comedi_insn *insn, unsigned int *data)
{
	struct dyna_pci10xx_private *devpriv = dev->private;
	u16 d = 0;

	mutex_lock(&devpriv->mutex);
	smp_mb();
	d = inw_p(devpriv->BADR3);
	udelay(10);

	/* on return the data[0] contains output and data[1] contains input */
	data[1] = d;
	data[0] = s->state;
	mutex_unlock(&devpriv->mutex);
	return insn->n;
}

static int dyna_pci10xx_do_insn_bits(struct comedi_device *dev,
				     struct comedi_subdevice *s,
				     struct comedi_insn *insn,
				     unsigned int *data)
{
	struct dyna_pci10xx_private *devpriv = dev->private;

	mutex_lock(&devpriv->mutex);
	if (comedi_dio_update_state(s, data)) {
		smp_mb();
		outw_p(s->state, devpriv->BADR3);
		udelay(10);
	}

	data[1] = s->state;
	mutex_unlock(&devpriv->mutex);

	return insn->n;
}

static int dyna_pci10xx_auto_attach(struct comedi_device *dev,
					      unsigned long context_unused)
{
	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
	struct dyna_pci10xx_private *devpriv;
	struct comedi_subdevice *s;
	int ret;

	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);
	devpriv->BADR3 = pci_resource_start(pcidev, 3);

	mutex_init(&devpriv->mutex);

	ret = comedi_alloc_subdevices(dev, 4);
	if (ret)
		return ret;

	/* analog input */
	s = &dev->subdevices[0];
	s->type = COMEDI_SUBD_AI;
	s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF;
	s->n_chan = 16;
	s->maxdata = 0x0FFF;
	s->range_table = &range_pci1050_ai;
	s->len_chanlist = 16;
	s->insn_read = dyna_pci10xx_insn_read_ai;

	/* analog output */
	s = &dev->subdevices[1];
	s->type = COMEDI_SUBD_AO;
	s->subdev_flags = SDF_WRITABLE;
	s->n_chan = 16;
	s->maxdata = 0x0FFF;
	s->range_table = &range_unipolar10;
	s->len_chanlist = 16;
	s->insn_write = dyna_pci10xx_insn_write_ao;

	/* digital input */
	s = &dev->subdevices[2];
	s->type = COMEDI_SUBD_DI;
	s->subdev_flags = SDF_READABLE | SDF_GROUND;
	s->n_chan = 16;
	s->maxdata = 1;
	s->range_table = &range_digital;
	s->len_chanlist = 16;
	s->insn_bits = dyna_pci10xx_di_insn_bits;

	/* digital output */
	s = &dev->subdevices[3];
	s->type = COMEDI_SUBD_DO;
	s->subdev_flags = SDF_WRITABLE | SDF_GROUND;
	s->n_chan = 16;
	s->maxdata = 1;
	s->range_table = &range_digital;
	s->len_chanlist = 16;
	s->state = 0;
	s->insn_bits = dyna_pci10xx_do_insn_bits;

	return 0;
}

static void dyna_pci10xx_detach(struct comedi_device *dev)
{
	struct dyna_pci10xx_private *devpriv = dev->private;

	if (devpriv)
		mutex_destroy(&devpriv->mutex);
	comedi_pci_disable(dev);
}

static struct comedi_driver dyna_pci10xx_driver = {
	.driver_name	= "dyna_pci10xx",
	.module		= THIS_MODULE,
	.auto_attach	= dyna_pci10xx_auto_attach,
	.detach		= dyna_pci10xx_detach,
};

static int dyna_pci10xx_pci_probe(struct pci_dev *dev,
				  const struct pci_device_id *id)
{
	return comedi_pci_auto_config(dev, &dyna_pci10xx_driver,
				      id->driver_data);
}

static const struct pci_device_id dyna_pci10xx_pci_table[] = {
	{ PCI_DEVICE(PCI_VENDOR_ID_PLX, 0x1050) },
	{ 0 }
};
MODULE_DEVICE_TABLE(pci, dyna_pci10xx_pci_table);

static struct pci_driver dyna_pci10xx_pci_driver = {
	.name		= "dyna_pci10xx",
	.id_table	= dyna_pci10xx_pci_table,
	.probe		= dyna_pci10xx_pci_probe,
	.remove		= comedi_pci_auto_unconfig,
};
module_comedi_pci_driver(dyna_pci10xx_driver, dyna_pci10xx_pci_driver);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Prashant Shah <pshah.mumbai@gmail.com>");
MODULE_DESCRIPTION("Comedi based drivers for Dynalog PCI DAQ cards");
Commit	Line	Data
16a7373a PS	1	/*
	2	* comedi/drivers/dyna_pci10xx.c
	3	* Copyright (C) 2011 Prashant Shah, pshah.mumbai@gmail.com
	4	*
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License as published by
	7	* the Free Software Foundation; either version 2 of the License, or
	8	* (at your option) any later version.
	9	*
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
16a7373a PS	14	*/
	15
	16	/*
	17	Driver: dyna_pci10xx
	18	Devices: Dynalog India PCI DAQ Cards, http://www.dynalogindia.com/
	19	Author: Prashant Shah <pshah.mumbai@gmail.com>
	20	Developed at Automation Labs, Chemical Dept., IIT Bombay, India.
	21	Prof. Kannan Moudgalya <kannan@iitb.ac.in>
	22	http://www.iitb.ac.in
	23	Status: Stable
	24	Version: 1.0
	25	Device Supported :
	26	- Dynalog PCI 1050
	27
	28	Notes :
	29	- Dynalog India Pvt. Ltd. does not have a registered PCI Vendor ID and
	30	they are using the PLX Technlogies Vendor ID since that is the PCI Chip used
	31	in the card.
	32	- Dynalog India Pvt. Ltd. has provided the internal register specification for
	33	their cards in their manuals.
	34	*/
	35
ce157f80 HS	36	#include <linux/module.h>
ce157f80 HS	37	#include <linux/delay.h>
33782dd5	38	#include <linux/pci.h>
16a7373a PS	39	#include <linux/mutex.h>
16a7373a PS	40
33782dd5 HS	41	#include "../comedidev.h"
33782dd5 HS	42
16a7373a PS	43	#define READ_TIMEOUT 50
16a7373a PS	44
eff3689b HS	45	static const struct comedi_lrange range_pci1050_ai = {
	46	3, {
	47	BIP_RANGE(10),
	48	BIP_RANGE(5),
	49	UNI_RANGE(10)
	50	}
16a7373a PS	51	};
	52
	53	static const char range_codes_pci1050_ai[] = { 0x00, 0x10, 0x30 };
	54
16a7373a	55	struct dyna_pci10xx_private {
16a7373a	56	struct mutex mutex;
b694c4f4	57	unsigned long BADR3;
16a7373a PS	58	};
16a7373a PS	59
443e6d02 HS	60	static int dyna_pci10xx_ai_eoc(struct comedi_device *dev,
	61	struct comedi_subdevice *s,
	62	struct comedi_insn *insn,
	63	unsigned long context)
	64	{
	65	unsigned int status;
	66
	67	status = inw_p(dev->iobase);
	68	if (status & (1 << 15))
	69	return 0;
	70	return -EBUSY;
	71	}
16a7373a	72
16a7373a PS	73	static int dyna_pci10xx_insn_read_ai(struct comedi_device *dev,
	74	struct comedi_subdevice *s,
	75	struct comedi_insn insn, unsigned int data)
	76	{
af0677c1	77	struct dyna_pci10xx_private *devpriv = dev->private;
443e6d02	78	int n;
16a7373a	79	u16 d = 0;
443e6d02	80	int ret = 0;
16a7373a PS	81	unsigned int chan, range;
	82
	83	/* get the channel number and range */
	84	chan = CR_CHAN(insn->chanspec);
8fda437d	85	range = range_codes_pci1050_ai[CR_RANGE((insn->chanspec))];
16a7373a PS	86
	87	mutex_lock(&devpriv->mutex);
	88	/* convert n samples */
	89	for (n = 0; n < insn->n; n++) {
	90	/* trigger conversion */
	91	smp_mb();
b694c4f4	92	outw_p(0x0000 + range + chan, dev->iobase + 2);
16a7373a	93	udelay(10);
16a7373a	94
443e6d02 HS	95	ret = comedi_timeout(dev, s, insn, dyna_pci10xx_ai_eoc, 0);
	96	if (ret) {
	97	data[n] = 0;
443e6d02	98	break;
16a7373a	99	}
443e6d02 HS	100
	101	/* read data */
	102	d = inw_p(dev->iobase);
16a7373a PS	103	/* mask the first 4 bits - EOC bits */
	104	d &= 0x0FFF;
	105	data[n] = d;
	106	}
	107	mutex_unlock(&devpriv->mutex);
	108
	109	/* return the number of samples read/written */
443e6d02	110	return ret ? ret : n;
16a7373a PS	111	}
	112
	113	/* analog output callback */
	114	static int dyna_pci10xx_insn_write_ao(struct comedi_device *dev,
	115	struct comedi_subdevice *s,
	116	struct comedi_insn insn, unsigned int data)
	117	{
af0677c1	118	struct dyna_pci10xx_private *devpriv = dev->private;
16a7373a PS	119	int n;
	120	unsigned int chan, range;
	121
	122	chan = CR_CHAN(insn->chanspec);
8fda437d	123	range = range_codes_pci1050_ai[CR_RANGE((insn->chanspec))];
16a7373a PS	124
	125	mutex_lock(&devpriv->mutex);
	126	for (n = 0; n < insn->n; n++) {
	127	smp_mb();
	128	/* trigger conversion and write data */
b694c4f4	129	outw_p(data[n], dev->iobase);
16a7373a PS	130	udelay(10);
	131	}
	132	mutex_unlock(&devpriv->mutex);
	133	return n;
	134	}
	135
	136	/* digital input bit interface */
	137	static int dyna_pci10xx_di_insn_bits(struct comedi_device *dev,
	138	struct comedi_subdevice *s,
	139	struct comedi_insn insn, unsigned int data)
	140	{
af0677c1	141	struct dyna_pci10xx_private *devpriv = dev->private;
16a7373a PS	142	u16 d = 0;
16a7373a PS	143
16a7373a PS	144	mutex_lock(&devpriv->mutex);
	145	smp_mb();
	146	d = inw_p(devpriv->BADR3);
	147	udelay(10);
	148
	149	/* on return the data[0] contains output and data[1] contains input */
	150	data[1] = d;
	151	data[0] = s->state;
	152	mutex_unlock(&devpriv->mutex);
a2714e3e	153	return insn->n;
16a7373a PS	154	}
16a7373a PS	155
16a7373a	156	static int dyna_pci10xx_do_insn_bits(struct comedi_device *dev,
97f4289a HS	157	struct comedi_subdevice *s,
	158	struct comedi_insn *insn,
	159	unsigned int *data)
16a7373a	160	{
af0677c1 HS	161	struct dyna_pci10xx_private *devpriv = dev->private;
af0677c1 HS	162
16a7373a	163	mutex_lock(&devpriv->mutex);
97f4289a	164	if (comedi_dio_update_state(s, data)) {
16a7373a PS	165	smp_mb();
	166	outw_p(s->state, devpriv->BADR3);
	167	udelay(10);
	168	}
	169
16a7373a PS	170	data[1] = s->state;
16a7373a PS	171	mutex_unlock(&devpriv->mutex);
97f4289a	172
a2714e3e	173	return insn->n;
16a7373a PS	174	}
16a7373a PS	175
a690b7e5	176	static int dyna_pci10xx_auto_attach(struct comedi_device *dev,
750af5e5	177	unsigned long context_unused)
1f20b973	178	{
750af5e5	179	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
af0677c1	180	struct dyna_pci10xx_private *devpriv;
1f20b973 HS	181	struct comedi_subdevice *s;
	182	int ret;
	183
0bdab509	184	devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
c34fa261 HS	185	if (!devpriv)
c34fa261 HS	186	return -ENOMEM;
16a7373a	187
818f569f	188	ret = comedi_pci_enable(dev);
690e839f HS	189	if (ret)
690e839f HS	190	return ret;
b694c4f4	191	dev->iobase = pci_resource_start(pcidev, 2);
16a7373a	192	devpriv->BADR3 = pci_resource_start(pcidev, 3);
16a7373a	193
690e839f HS	194	mutex_init(&devpriv->mutex);
690e839f HS	195
8b6c5694	196	ret = comedi_alloc_subdevices(dev, 4);
6bdae560	197	if (ret)
8b6c5694	198	return ret;
16a7373a PS	199
16a7373a PS	200	/* analog input */
1b39406b	201	s = &dev->subdevices[0];
16a7373a PS	202	s->type = COMEDI_SUBD_AI;
16a7373a PS	203	s->subdev_flags = SDF_READABLE \| SDF_GROUND \| SDF_DIFF;
8fda437d	204	s->n_chan = 16;
16a7373a	205	s->maxdata = 0x0FFF;
8fda437d	206	s->range_table = &range_pci1050_ai;
16a7373a PS	207	s->len_chanlist = 16;
	208	s->insn_read = dyna_pci10xx_insn_read_ai;
	209
	210	/* analog output */
1b39406b	211	s = &dev->subdevices[1];
16a7373a PS	212	s->type = COMEDI_SUBD_AO;
16a7373a PS	213	s->subdev_flags = SDF_WRITABLE;
8fda437d	214	s->n_chan = 16;
16a7373a	215	s->maxdata = 0x0FFF;
f2eacff1	216	s->range_table = &range_unipolar10;
16a7373a PS	217	s->len_chanlist = 16;
	218	s->insn_write = dyna_pci10xx_insn_write_ao;
	219
	220	/* digital input */
1b39406b	221	s = &dev->subdevices[2];
16a7373a PS	222	s->type = COMEDI_SUBD_DI;
16a7373a PS	223	s->subdev_flags = SDF_READABLE \| SDF_GROUND;
8fda437d	224	s->n_chan = 16;
16a7373a PS	225	s->maxdata = 1;
16a7373a PS	226	s->range_table = &range_digital;
8fda437d	227	s->len_chanlist = 16;
16a7373a PS	228	s->insn_bits = dyna_pci10xx_di_insn_bits;
	229
	230	/* digital output */
1b39406b	231	s = &dev->subdevices[3];
16a7373a PS	232	s->type = COMEDI_SUBD_DO;
16a7373a PS	233	s->subdev_flags = SDF_WRITABLE \| SDF_GROUND;
8fda437d	234	s->n_chan = 16;
16a7373a PS	235	s->maxdata = 1;
16a7373a PS	236	s->range_table = &range_digital;
8fda437d	237	s->len_chanlist = 16;
16a7373a PS	238	s->state = 0;
	239	s->insn_bits = dyna_pci10xx_do_insn_bits;
	240
690e839f HS	241	return 0;
	242	}
	243
484ecc95	244	static void dyna_pci10xx_detach(struct comedi_device *dev)
16a7373a	245	{
af0677c1	246	struct dyna_pci10xx_private *devpriv = dev->private;
06183026 HS	247
06183026 HS	248	if (devpriv)
16a7373a	249	mutex_destroy(&devpriv->mutex);
7f072f54	250	comedi_pci_disable(dev);
16a7373a PS	251	}
16a7373a PS	252
75e6301b HS	253	static struct comedi_driver dyna_pci10xx_driver = {
75e6301b HS	254	.driver_name = "dyna_pci10xx",
de9f2db4	255	.module = THIS_MODULE,
750af5e5	256	.auto_attach = dyna_pci10xx_auto_attach,
de9f2db4	257	.detach = dyna_pci10xx_detach,
de9f2db4 HS	258	};
de9f2db4 HS	259
a690b7e5	260	static int dyna_pci10xx_pci_probe(struct pci_dev *dev,
b8f4ac23	261	const struct pci_device_id *id)
16a7373a	262	{
b8f4ac23 HS	263	return comedi_pci_auto_config(dev, &dyna_pci10xx_driver,
b8f4ac23 HS	264	id->driver_data);
16a7373a PS	265	}
16a7373a PS	266
41e043fc	267	static const struct pci_device_id dyna_pci10xx_pci_table[] = {
00f5c774	268	{ PCI_DEVICE(PCI_VENDOR_ID_PLX, 0x1050) },
de9f2db4 HS	269	{ 0 }
	270	};
	271	MODULE_DEVICE_TABLE(pci, dyna_pci10xx_pci_table);
	272
75e6301b HS	273	static struct pci_driver dyna_pci10xx_pci_driver = {
75e6301b HS	274	.name = "dyna_pci10xx",
de9f2db4	275	.id_table = dyna_pci10xx_pci_table,
75e6301b	276	.probe = dyna_pci10xx_pci_probe,
9901a4d7	277	.remove = comedi_pci_auto_unconfig,
16a7373a	278	};
75e6301b	279	module_comedi_pci_driver(dyna_pci10xx_driver, dyna_pci10xx_pci_driver);
16a7373a PS	280
	281	MODULE_LICENSE("GPL");
	282	MODULE_AUTHOR("Prashant Shah <pshah.mumbai@gmail.com>");
	283	MODULE_DESCRIPTION("Comedi based drivers for Dynalog PCI DAQ cards");