[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/mutex.h>

#include "../comedi_pci.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>
16a7373a PS	37	#include <linux/mutex.h>
16a7373a PS	38
5ca7653e	39	#include "../comedi_pci.h"
33782dd5	40
16a7373a PS	41	#define READ_TIMEOUT 50
16a7373a PS	42
eff3689b HS	43	static const struct comedi_lrange range_pci1050_ai = {
	44	3, {
	45	BIP_RANGE(10),
	46	BIP_RANGE(5),
	47	UNI_RANGE(10)
	48	}
16a7373a PS	49	};
	50
	51	static const char range_codes_pci1050_ai[] = { 0x00, 0x10, 0x30 };
	52
16a7373a	53	struct dyna_pci10xx_private {
16a7373a	54	struct mutex mutex;
b694c4f4	55	unsigned long BADR3;
16a7373a PS	56	};
16a7373a PS	57
443e6d02 HS	58	static int dyna_pci10xx_ai_eoc(struct comedi_device *dev,
	59	struct comedi_subdevice *s,
	60	struct comedi_insn *insn,
	61	unsigned long context)
	62	{
	63	unsigned int status;
	64
	65	status = inw_p(dev->iobase);
	66	if (status & (1 << 15))
	67	return 0;
	68	return -EBUSY;
	69	}
16a7373a	70
16a7373a	71	static int dyna_pci10xx_insn_read_ai(struct comedi_device *dev,
6c7d2c8b HS	72	struct comedi_subdevice *s,
	73	struct comedi_insn *insn,
	74	unsigned int *data)
16a7373a	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,
6c7d2c8b HS	112	struct comedi_subdevice *s,
	113	struct comedi_insn *insn,
	114	unsigned int *data)
16a7373a	115	{
af0677c1	116	struct dyna_pci10xx_private *devpriv = dev->private;
16a7373a PS	117	int n;
	118	unsigned int chan, range;
	119
	120	chan = CR_CHAN(insn->chanspec);
8fda437d	121	range = range_codes_pci1050_ai[CR_RANGE((insn->chanspec))];
16a7373a PS	122
	123	mutex_lock(&devpriv->mutex);
	124	for (n = 0; n < insn->n; n++) {
	125	smp_mb();
	126	/* trigger conversion and write data */
b694c4f4	127	outw_p(data[n], dev->iobase);
16a7373a PS	128	udelay(10);
	129	}
	130	mutex_unlock(&devpriv->mutex);
	131	return n;
	132	}
	133
	134	/* digital input bit interface */
	135	static int dyna_pci10xx_di_insn_bits(struct comedi_device *dev,
6c7d2c8b HS	136	struct comedi_subdevice *s,
	137	struct comedi_insn *insn,
	138	unsigned int *data)
16a7373a	139	{
af0677c1	140	struct dyna_pci10xx_private *devpriv = dev->private;
16a7373a PS	141	u16 d = 0;
16a7373a PS	142
16a7373a PS	143	mutex_lock(&devpriv->mutex);
	144	smp_mb();
	145	d = inw_p(devpriv->BADR3);
	146	udelay(10);
	147
	148	/* on return the data[0] contains output and data[1] contains input */
	149	data[1] = d;
	150	data[0] = s->state;
	151	mutex_unlock(&devpriv->mutex);
a2714e3e	152	return insn->n;
16a7373a PS	153	}
16a7373a PS	154
16a7373a	155	static int dyna_pci10xx_do_insn_bits(struct comedi_device *dev,
97f4289a HS	156	struct comedi_subdevice *s,
	157	struct comedi_insn *insn,
	158	unsigned int *data)
16a7373a	159	{
af0677c1 HS	160	struct dyna_pci10xx_private *devpriv = dev->private;
af0677c1 HS	161
16a7373a	162	mutex_lock(&devpriv->mutex);
97f4289a	163	if (comedi_dio_update_state(s, data)) {
16a7373a PS	164	smp_mb();
	165	outw_p(s->state, devpriv->BADR3);
	166	udelay(10);
	167	}
	168
16a7373a PS	169	data[1] = s->state;
16a7373a PS	170	mutex_unlock(&devpriv->mutex);
97f4289a	171
a2714e3e	172	return insn->n;
16a7373a PS	173	}
16a7373a PS	174
a690b7e5	175	static int dyna_pci10xx_auto_attach(struct comedi_device *dev,
6c7d2c8b	176	unsigned long context_unused)
1f20b973	177	{
750af5e5	178	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
af0677c1	179	struct dyna_pci10xx_private *devpriv;
1f20b973 HS	180	struct comedi_subdevice *s;
	181	int ret;
	182
0bdab509	183	devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
c34fa261 HS	184	if (!devpriv)
c34fa261 HS	185	return -ENOMEM;
16a7373a	186
818f569f	187	ret = comedi_pci_enable(dev);
690e839f HS	188	if (ret)
690e839f HS	189	return ret;
b694c4f4	190	dev->iobase = pci_resource_start(pcidev, 2);
16a7373a	191	devpriv->BADR3 = pci_resource_start(pcidev, 3);
16a7373a	192
690e839f HS	193	mutex_init(&devpriv->mutex);
690e839f HS	194
8b6c5694	195	ret = comedi_alloc_subdevices(dev, 4);
6bdae560	196	if (ret)
8b6c5694	197	return ret;
16a7373a PS	198
16a7373a PS	199	/* analog input */
1b39406b	200	s = &dev->subdevices[0];
16a7373a PS	201	s->type = COMEDI_SUBD_AI;
16a7373a PS	202	s->subdev_flags = SDF_READABLE \| SDF_GROUND \| SDF_DIFF;
8fda437d	203	s->n_chan = 16;
16a7373a	204	s->maxdata = 0x0FFF;
8fda437d	205	s->range_table = &range_pci1050_ai;
16a7373a PS	206	s->len_chanlist = 16;
	207	s->insn_read = dyna_pci10xx_insn_read_ai;
	208
	209	/* analog output */
1b39406b	210	s = &dev->subdevices[1];
16a7373a PS	211	s->type = COMEDI_SUBD_AO;
16a7373a PS	212	s->subdev_flags = SDF_WRITABLE;
8fda437d	213	s->n_chan = 16;
16a7373a	214	s->maxdata = 0x0FFF;
f2eacff1	215	s->range_table = &range_unipolar10;
16a7373a PS	216	s->len_chanlist = 16;
	217	s->insn_write = dyna_pci10xx_insn_write_ao;
	218
	219	/* digital input */
1b39406b	220	s = &dev->subdevices[2];
16a7373a	221	s->type = COMEDI_SUBD_DI;
e0025918	222	s->subdev_flags = SDF_READABLE;
8fda437d	223	s->n_chan = 16;
16a7373a PS	224	s->maxdata = 1;
16a7373a PS	225	s->range_table = &range_digital;
8fda437d	226	s->len_chanlist = 16;
16a7373a PS	227	s->insn_bits = dyna_pci10xx_di_insn_bits;
	228
	229	/* digital output */
1b39406b	230	s = &dev->subdevices[3];
16a7373a	231	s->type = COMEDI_SUBD_DO;
e0025918	232	s->subdev_flags = SDF_WRITABLE;
8fda437d	233	s->n_chan = 16;
16a7373a PS	234	s->maxdata = 1;
16a7373a PS	235	s->range_table = &range_digital;
8fda437d	236	s->len_chanlist = 16;
16a7373a PS	237	s->state = 0;
	238	s->insn_bits = dyna_pci10xx_do_insn_bits;
	239
690e839f HS	240	return 0;
	241	}
	242
484ecc95	243	static void dyna_pci10xx_detach(struct comedi_device *dev)
16a7373a	244	{
af0677c1	245	struct dyna_pci10xx_private *devpriv = dev->private;
06183026	246
aac307f9	247	comedi_pci_detach(dev);
06183026	248	if (devpriv)
16a7373a	249	mutex_destroy(&devpriv->mutex);
16a7373a PS	250	}
16a7373a PS	251
75e6301b HS	252	static struct comedi_driver dyna_pci10xx_driver = {
75e6301b HS	253	.driver_name = "dyna_pci10xx",
de9f2db4	254	.module = THIS_MODULE,
750af5e5	255	.auto_attach = dyna_pci10xx_auto_attach,
de9f2db4	256	.detach = dyna_pci10xx_detach,
de9f2db4 HS	257	};
de9f2db4 HS	258
a690b7e5	259	static int dyna_pci10xx_pci_probe(struct pci_dev *dev,
b8f4ac23	260	const struct pci_device_id *id)
16a7373a	261	{
b8f4ac23 HS	262	return comedi_pci_auto_config(dev, &dyna_pci10xx_driver,
b8f4ac23 HS	263	id->driver_data);
16a7373a PS	264	}
16a7373a PS	265
41e043fc	266	static const struct pci_device_id dyna_pci10xx_pci_table[] = {
00f5c774	267	{ PCI_DEVICE(PCI_VENDOR_ID_PLX, 0x1050) },
de9f2db4 HS	268	{ 0 }
	269	};
	270	MODULE_DEVICE_TABLE(pci, dyna_pci10xx_pci_table);
	271
75e6301b HS	272	static struct pci_driver dyna_pci10xx_pci_driver = {
75e6301b HS	273	.name = "dyna_pci10xx",
de9f2db4	274	.id_table = dyna_pci10xx_pci_table,
75e6301b	275	.probe = dyna_pci10xx_pci_probe,
9901a4d7	276	.remove = comedi_pci_auto_unconfig,
16a7373a	277	};
75e6301b	278	module_comedi_pci_driver(dyna_pci10xx_driver, dyna_pci10xx_pci_driver);
16a7373a PS	279
	280	MODULE_LICENSE("GPL");
	281	MODULE_AUTHOR("Prashant Shah <pshah.mumbai@gmail.com>");
	282	MODULE_DESCRIPTION("Comedi based drivers for Dynalog PCI DAQ cards");