[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
 * Description: Dynalog India PCI DAQ Cards, http://www.dynalogindia.com/
 * Devices: [Dynalog] PCI-1050 (dyna_pci1050)
 * Author: Prashant Shah <pshah.mumbai@gmail.com>
 * Status: Stable
 *
 * Developed at Automation Labs, Chemical Dept., IIT Bombay, India.
 * Prof. Kannan Moudgalya <kannan@iitb.ac.in>
 * http://www.iitb.ac.in
 *
 * 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)
			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;
	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;
	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;

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

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	/*
f94a8c87 IA	17	* Driver: dyna_pci10xx
	18	* Description: Dynalog India PCI DAQ Cards, http://www.dynalogindia.com/
	19	* Devices: [Dynalog] PCI-1050 (dyna_pci1050)
	20	* Author: Prashant Shah <pshah.mumbai@gmail.com>
	21	* Status: Stable
	22	*
	23	* Developed at Automation Labs, Chemical Dept., IIT Bombay, India.
	24	* Prof. Kannan Moudgalya <kannan@iitb.ac.in>
	25	* http://www.iitb.ac.in
	26	*
	27	* Notes :
	28	* - Dynalog India Pvt. Ltd. does not have a registered PCI Vendor ID and
	29	* they are using the PLX Technlogies Vendor ID since that is the PCI Chip
	30	* used in the card.
	31	* - Dynalog India Pvt. Ltd. has provided the internal register specification
	32	* for their cards in their manuals.
	33	*/
16a7373a	34
ce157f80 HS	35	#include <linux/module.h>
ce157f80 HS	36	#include <linux/delay.h>
33782dd5	37	#include <linux/pci.h>
16a7373a PS	38	#include <linux/mutex.h>
16a7373a PS	39
33782dd5 HS	40	#include "../comedidev.h"
33782dd5 HS	41
16a7373a PS	42	#define READ_TIMEOUT 50
16a7373a PS	43
eff3689b HS	44	static const struct comedi_lrange range_pci1050_ai = {
	45	3, {
	46	BIP_RANGE(10),
	47	BIP_RANGE(5),
	48	UNI_RANGE(10)
	49	}
16a7373a PS	50	};
	51
	52	static const char range_codes_pci1050_ai[] = { 0x00, 0x10, 0x30 };
	53
16a7373a	54	struct dyna_pci10xx_private {
16a7373a	55	struct mutex mutex;
b694c4f4	56	unsigned long BADR3;
16a7373a PS	57	};
16a7373a PS	58
443e6d02 HS	59	static int dyna_pci10xx_ai_eoc(struct comedi_device *dev,
	60	struct comedi_subdevice *s,
	61	struct comedi_insn *insn,
	62	unsigned long context)
	63	{
	64	unsigned int status;
	65
	66	status = inw_p(dev->iobase);
	67	if (status & (1 << 15))
	68	return 0;
	69	return -EBUSY;
	70	}
16a7373a	71
16a7373a PS	72	static int dyna_pci10xx_insn_read_ai(struct comedi_device *dev,
	73	struct comedi_subdevice *s,
	74	struct comedi_insn insn, unsigned int data)
	75	{
af0677c1	76	struct dyna_pci10xx_private *devpriv = dev->private;
443e6d02	77	int n;
16a7373a	78	u16 d = 0;
443e6d02	79	int ret = 0;
16a7373a PS	80	unsigned int chan, range;
	81
	82	/* get the channel number and range */
	83	chan = CR_CHAN(insn->chanspec);
8fda437d	84	range = range_codes_pci1050_ai[CR_RANGE((insn->chanspec))];
16a7373a PS	85
	86	mutex_lock(&devpriv->mutex);
	87	/* convert n samples */
	88	for (n = 0; n < insn->n; n++) {
	89	/* trigger conversion */
	90	smp_mb();
b694c4f4	91	outw_p(0x0000 + range + chan, dev->iobase + 2);
16a7373a	92	udelay(10);
16a7373a	93
443e6d02	94	ret = comedi_timeout(dev, s, insn, dyna_pci10xx_ai_eoc, 0);
dbd446fc	95	if (ret)
443e6d02	96	break;
443e6d02 HS	97
	98	/* read data */
	99	d = inw_p(dev->iobase);
16a7373a PS	100	/* mask the first 4 bits - EOC bits */
	101	d &= 0x0FFF;
	102	data[n] = d;
	103	}
	104	mutex_unlock(&devpriv->mutex);
	105
	106	/* return the number of samples read/written */
443e6d02	107	return ret ? ret : n;
16a7373a PS	108	}
	109
	110	/* analog output callback */
	111	static int dyna_pci10xx_insn_write_ao(struct comedi_device *dev,
	112	struct comedi_subdevice *s,
	113	struct comedi_insn insn, unsigned int data)
	114	{
af0677c1	115	struct dyna_pci10xx_private *devpriv = dev->private;
16a7373a PS	116	int n;
	117	unsigned int chan, range;
	118
	119	chan = CR_CHAN(insn->chanspec);
8fda437d	120	range = range_codes_pci1050_ai[CR_RANGE((insn->chanspec))];
16a7373a PS	121
	122	mutex_lock(&devpriv->mutex);
	123	for (n = 0; n < insn->n; n++) {
	124	smp_mb();
	125	/* trigger conversion and write data */
b694c4f4	126	outw_p(data[n], dev->iobase);
16a7373a PS	127	udelay(10);
	128	}
	129	mutex_unlock(&devpriv->mutex);
	130	return n;
	131	}
	132
	133	/* digital input bit interface */
	134	static int dyna_pci10xx_di_insn_bits(struct comedi_device *dev,
	135	struct comedi_subdevice *s,
	136	struct comedi_insn insn, unsigned int data)
	137	{
af0677c1	138	struct dyna_pci10xx_private *devpriv = dev->private;
16a7373a PS	139	u16 d = 0;
16a7373a PS	140
16a7373a PS	141	mutex_lock(&devpriv->mutex);
	142	smp_mb();
	143	d = inw_p(devpriv->BADR3);
	144	udelay(10);
	145
	146	/* on return the data[0] contains output and data[1] contains input */
	147	data[1] = d;
	148	data[0] = s->state;
	149	mutex_unlock(&devpriv->mutex);
a2714e3e	150	return insn->n;
16a7373a PS	151	}
16a7373a PS	152
16a7373a	153	static int dyna_pci10xx_do_insn_bits(struct comedi_device *dev,
97f4289a HS	154	struct comedi_subdevice *s,
	155	struct comedi_insn *insn,
	156	unsigned int *data)
16a7373a	157	{
af0677c1 HS	158	struct dyna_pci10xx_private *devpriv = dev->private;
af0677c1 HS	159
16a7373a	160	mutex_lock(&devpriv->mutex);
97f4289a	161	if (comedi_dio_update_state(s, data)) {
16a7373a PS	162	smp_mb();
	163	outw_p(s->state, devpriv->BADR3);
	164	udelay(10);
	165	}
	166
16a7373a PS	167	data[1] = s->state;
16a7373a PS	168	mutex_unlock(&devpriv->mutex);
97f4289a	169
a2714e3e	170	return insn->n;
16a7373a PS	171	}
16a7373a PS	172
a690b7e5	173	static int dyna_pci10xx_auto_attach(struct comedi_device *dev,
750af5e5	174	unsigned long context_unused)
1f20b973	175	{
750af5e5	176	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
af0677c1	177	struct dyna_pci10xx_private *devpriv;
1f20b973 HS	178	struct comedi_subdevice *s;
	179	int ret;
	180
0bdab509	181	devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
c34fa261 HS	182	if (!devpriv)
c34fa261 HS	183	return -ENOMEM;
16a7373a	184
818f569f	185	ret = comedi_pci_enable(dev);
690e839f HS	186	if (ret)
690e839f HS	187	return ret;
b694c4f4	188	dev->iobase = pci_resource_start(pcidev, 2);
16a7373a	189	devpriv->BADR3 = pci_resource_start(pcidev, 3);
16a7373a	190
690e839f HS	191	mutex_init(&devpriv->mutex);
690e839f HS	192
8b6c5694	193	ret = comedi_alloc_subdevices(dev, 4);
6bdae560	194	if (ret)
8b6c5694	195	return ret;
16a7373a PS	196
16a7373a PS	197	/* analog input */
1b39406b	198	s = &dev->subdevices[0];
16a7373a PS	199	s->type = COMEDI_SUBD_AI;
16a7373a PS	200	s->subdev_flags = SDF_READABLE \| SDF_GROUND \| SDF_DIFF;
8fda437d	201	s->n_chan = 16;
16a7373a	202	s->maxdata = 0x0FFF;
8fda437d	203	s->range_table = &range_pci1050_ai;
16a7373a PS	204	s->len_chanlist = 16;
	205	s->insn_read = dyna_pci10xx_insn_read_ai;
	206
	207	/* analog output */
1b39406b	208	s = &dev->subdevices[1];
16a7373a PS	209	s->type = COMEDI_SUBD_AO;
16a7373a PS	210	s->subdev_flags = SDF_WRITABLE;
8fda437d	211	s->n_chan = 16;
16a7373a	212	s->maxdata = 0x0FFF;
f2eacff1	213	s->range_table = &range_unipolar10;
16a7373a PS	214	s->len_chanlist = 16;
	215	s->insn_write = dyna_pci10xx_insn_write_ao;
	216
	217	/* digital input */
1b39406b	218	s = &dev->subdevices[2];
16a7373a	219	s->type = COMEDI_SUBD_DI;
e0025918	220	s->subdev_flags = SDF_READABLE;
8fda437d	221	s->n_chan = 16;
16a7373a PS	222	s->maxdata = 1;
16a7373a PS	223	s->range_table = &range_digital;
8fda437d	224	s->len_chanlist = 16;
16a7373a PS	225	s->insn_bits = dyna_pci10xx_di_insn_bits;
	226
	227	/* digital output */
1b39406b	228	s = &dev->subdevices[3];
16a7373a	229	s->type = COMEDI_SUBD_DO;
e0025918	230	s->subdev_flags = SDF_WRITABLE;
8fda437d	231	s->n_chan = 16;
16a7373a PS	232	s->maxdata = 1;
16a7373a PS	233	s->range_table = &range_digital;
8fda437d	234	s->len_chanlist = 16;
16a7373a PS	235	s->state = 0;
	236	s->insn_bits = dyna_pci10xx_do_insn_bits;
	237
690e839f HS	238	return 0;
	239	}
	240
484ecc95	241	static void dyna_pci10xx_detach(struct comedi_device *dev)
16a7373a	242	{
af0677c1	243	struct dyna_pci10xx_private *devpriv = dev->private;
06183026	244
aac307f9	245	comedi_pci_detach(dev);
06183026	246	if (devpriv)
16a7373a	247	mutex_destroy(&devpriv->mutex);
16a7373a PS	248	}
16a7373a PS	249
75e6301b HS	250	static struct comedi_driver dyna_pci10xx_driver = {
75e6301b HS	251	.driver_name = "dyna_pci10xx",
de9f2db4	252	.module = THIS_MODULE,
750af5e5	253	.auto_attach = dyna_pci10xx_auto_attach,
de9f2db4	254	.detach = dyna_pci10xx_detach,
de9f2db4 HS	255	};
de9f2db4 HS	256
a690b7e5	257	static int dyna_pci10xx_pci_probe(struct pci_dev *dev,
b8f4ac23	258	const struct pci_device_id *id)
16a7373a	259	{
b8f4ac23 HS	260	return comedi_pci_auto_config(dev, &dyna_pci10xx_driver,
b8f4ac23 HS	261	id->driver_data);
16a7373a PS	262	}
16a7373a PS	263
41e043fc	264	static const struct pci_device_id dyna_pci10xx_pci_table[] = {
00f5c774	265	{ PCI_DEVICE(PCI_VENDOR_ID_PLX, 0x1050) },
de9f2db4 HS	266	{ 0 }
	267	};
	268	MODULE_DEVICE_TABLE(pci, dyna_pci10xx_pci_table);
	269
75e6301b HS	270	static struct pci_driver dyna_pci10xx_pci_driver = {
75e6301b HS	271	.name = "dyna_pci10xx",
de9f2db4	272	.id_table = dyna_pci10xx_pci_table,
75e6301b	273	.probe = dyna_pci10xx_pci_probe,
9901a4d7	274	.remove = comedi_pci_auto_unconfig,
16a7373a	275	};
75e6301b	276	module_comedi_pci_driver(dyna_pci10xx_driver, dyna_pci10xx_pci_driver);
16a7373a PS	277
	278	MODULE_LICENSE("GPL");
	279	MODULE_AUTHOR("Prashant Shah <pshah.mumbai@gmail.com>");
	280	MODULE_DESCRIPTION("Comedi based drivers for Dynalog PCI DAQ cards");