[mirror_ubuntu-hirsute-kernel.git] / drivers / staging / comedi / drivers / ni_670x.c

/*
    comedi/drivers/ni_670x.c
    Hardware driver for NI 670x devices

    COMEDI - Linux Control and Measurement Device Interface
    Copyright (C) 1997-2001 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: ni_670x
Description: National Instruments 670x
Author: Bart Joris <bjoris@advalvas.be>
Updated: Wed, 11 Dec 2002 18:25:35 -0800
Devices: [National Instruments] PCI-6703 (ni_670x), PCI-6704
Status: unknown

Commands are not supported.
*/

/*
	Bart Joris <bjoris@advalvas.be> Last updated on 20/08/2001

	Manuals:

	322110a.pdf	PCI/PXI-6704 User Manual
	322110b.pdf	PCI/PXI-6703/6704 User Manual

*/

#include <linux/module.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/slab.h>

#include "../comedidev.h"

#define AO_VALUE_OFFSET			0x00
#define	AO_CHAN_OFFSET			0x0c
#define	AO_STATUS_OFFSET		0x10
#define AO_CONTROL_OFFSET		0x10
#define	DIO_PORT0_DIR_OFFSET	0x20
#define	DIO_PORT0_DATA_OFFSET	0x24
#define	DIO_PORT1_DIR_OFFSET	0x28
#define	DIO_PORT1_DATA_OFFSET	0x2c
#define	MISC_STATUS_OFFSET		0x14
#define	MISC_CONTROL_OFFSET		0x14

enum ni_670x_boardid {
	BOARD_PCI6703,
	BOARD_PXI6704,
	BOARD_PCI6704,
};

struct ni_670x_board {
	const char *name;
	unsigned short ao_chans;
};

static const struct ni_670x_board ni_670x_boards[] = {
	[BOARD_PCI6703] = {
		.name		= "PCI-6703",
		.ao_chans	= 16,
	},
	[BOARD_PXI6704] = {
		.name		= "PXI-6704",
		.ao_chans	= 32,
	},
	[BOARD_PCI6704] = {
		.name		= "PCI-6704",
		.ao_chans	= 32,
	},
};

struct ni_670x_private {
	int boardtype;
	int dio;
};

static int ni_670x_ao_insn_write(struct comedi_device *dev,
				 struct comedi_subdevice *s,
				 struct comedi_insn *insn,
				 unsigned int *data)
{
	unsigned int chan = CR_CHAN(insn->chanspec);
	unsigned int val = s->readback[chan];
	int i;

	/*
	 * Channel number mapping:
	 *
	 * NI 6703/ NI 6704 | NI 6704 Only
	 * -------------------------------
	 * vch(0)  :  0     | ich(16) :  1
	 * vch(1)  :  2     | ich(17) :  3
	 * ...              | ...
	 * vch(15) : 30     | ich(31) : 31
	 */
	for (i = 0; i < insn->n; i++) {
		val = data[i];
		/* First write in channel register which channel to use */
		writel(((chan & 15) << 1) | ((chan & 16) >> 4),
		       dev->mmio + AO_CHAN_OFFSET);
		/* write channel value */
		writel(val, dev->mmio + AO_VALUE_OFFSET);
	}
	s->readback[chan] = val;

	return insn->n;
}

static int ni_670x_dio_insn_bits(struct comedi_device *dev,
				 struct comedi_subdevice *s,
				 struct comedi_insn *insn,
				 unsigned int *data)
{
	if (comedi_dio_update_state(s, data))
		writel(s->state, dev->mmio + DIO_PORT0_DATA_OFFSET);

	data[1] = readl(dev->mmio + DIO_PORT0_DATA_OFFSET);

	return insn->n;
}

static int ni_670x_dio_insn_config(struct comedi_device *dev,
				   struct comedi_subdevice *s,
				   struct comedi_insn *insn,
				   unsigned int *data)
{
	int ret;

	ret = comedi_dio_insn_config(dev, s, insn, data, 0);
	if (ret)
		return ret;

	writel(s->io_bits, dev->mmio + DIO_PORT0_DIR_OFFSET);

	return insn->n;
}

/* ripped from mite.h and mite_setup2() to avoid mite dependancy */
#define MITE_IODWBSR	0xc0	 /* IO Device Window Base Size Register */
#define WENAB		(1 << 7) /* window enable */

static int ni_670x_mite_init(struct pci_dev *pcidev)
{
	void __iomem *mite_base;
	u32 main_phys_addr;

	/* ioremap the MITE registers (BAR 0) temporarily */
	mite_base = pci_ioremap_bar(pcidev, 0);
	if (!mite_base)
		return -ENOMEM;

	/* set data window to main registers (BAR 1) */
	main_phys_addr = pci_resource_start(pcidev, 1);
	writel(main_phys_addr | WENAB, mite_base + MITE_IODWBSR);

	/* finished with MITE registers */
	iounmap(mite_base);
	return 0;
}

static int ni_670x_auto_attach(struct comedi_device *dev,
			       unsigned long context)
{
	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
	const struct ni_670x_board *thisboard = NULL;
	struct ni_670x_private *devpriv;
	struct comedi_subdevice *s;
	int ret;
	int i;

	if (context < ARRAY_SIZE(ni_670x_boards))
		thisboard = &ni_670x_boards[context];
	if (!thisboard)
		return -ENODEV;
	dev->board_ptr = thisboard;
	dev->board_name = thisboard->name;

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

	devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
	if (!devpriv)
		return -ENOMEM;

	ret = ni_670x_mite_init(pcidev);
	if (ret)
		return ret;

	dev->mmio = pci_ioremap_bar(pcidev, 1);
	if (!dev->mmio)
		return -ENOMEM;

	ret = comedi_alloc_subdevices(dev, 2);
	if (ret)
		return ret;

	s = &dev->subdevices[0];
	/* analog output subdevice */
	s->type = COMEDI_SUBD_AO;
	s->subdev_flags = SDF_WRITABLE;
	s->n_chan = thisboard->ao_chans;
	s->maxdata = 0xffff;
	if (s->n_chan == 32) {
		const struct comedi_lrange **range_table_list;

		range_table_list = kmalloc(sizeof(struct comedi_lrange *) * 32,
					   GFP_KERNEL);
		if (!range_table_list)
			return -ENOMEM;
		s->range_table_list = range_table_list;
		for (i = 0; i < 16; i++) {
			range_table_list[i] = &range_bipolar10;
			range_table_list[16 + i] = &range_0_20mA;
		}
	} else {
		s->range_table = &range_bipolar10;
	}
	s->insn_write = ni_670x_ao_insn_write;
	s->insn_read = comedi_readback_insn_read;

	ret = comedi_alloc_subdev_readback(s);
	if (ret)
		return ret;

	s = &dev->subdevices[1];
	/* digital i/o subdevice */
	s->type = COMEDI_SUBD_DIO;
	s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
	s->n_chan = 8;
	s->maxdata = 1;
	s->range_table = &range_digital;
	s->insn_bits = ni_670x_dio_insn_bits;
	s->insn_config = ni_670x_dio_insn_config;

	/* Config of misc registers */
	writel(0x10, dev->mmio + MISC_CONTROL_OFFSET);
	/* Config of ao registers */
	writel(0x00, dev->mmio + AO_CONTROL_OFFSET);

	return 0;
}

static void ni_670x_detach(struct comedi_device *dev)
{
	struct comedi_subdevice *s;

	comedi_pci_detach(dev);
	if (dev->n_subdevices) {
		s = &dev->subdevices[0];
		if (s)
			kfree(s->range_table_list);
	}
}

static struct comedi_driver ni_670x_driver = {
	.driver_name	= "ni_670x",
	.module		= THIS_MODULE,
	.auto_attach	= ni_670x_auto_attach,
	.detach		= ni_670x_detach,
};

static int ni_670x_pci_probe(struct pci_dev *dev,
			     const struct pci_device_id *id)
{
	return comedi_pci_auto_config(dev, &ni_670x_driver, id->driver_data);
}

static const struct pci_device_id ni_670x_pci_table[] = {
	{ PCI_VDEVICE(NI, 0x1290), BOARD_PCI6704 },
	{ PCI_VDEVICE(NI, 0x1920), BOARD_PXI6704 },
	{ PCI_VDEVICE(NI, 0x2c90), BOARD_PCI6703 },
	{ 0 }
};
MODULE_DEVICE_TABLE(pci, ni_670x_pci_table);

static struct pci_driver ni_670x_pci_driver = {
	.name		= "ni_670x",
	.id_table	= ni_670x_pci_table,
	.probe		= ni_670x_pci_probe,
	.remove		= comedi_pci_auto_unconfig,
};
module_comedi_pci_driver(ni_670x_driver, ni_670x_pci_driver);

MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_DESCRIPTION("Comedi low-level driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
3c5e1722 BJ	1	/*
	2	comedi/drivers/ni_670x.c
	3	Hardware driver for NI 670x devices
	4
	5	COMEDI - Linux Control and Measurement Device Interface
	6	Copyright (C) 1997-2001 David A. Schleef <ds@schleef.org>
	7
	8	This program is free software; you can redistribute it and/or modify
	9	it under the terms of the GNU General Public License as published by
	10	the Free Software Foundation; either version 2 of the License, or
	11	(at your option) any later version.
	12
	13	This program is distributed in the hope that it will be useful,
	14	but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	GNU General Public License for more details.
3c5e1722 BJ	17	*/
	18	/*
	19	Driver: ni_670x
	20	Description: National Instruments 670x
	21	Author: Bart Joris <bjoris@advalvas.be>
	22	Updated: Wed, 11 Dec 2002 18:25:35 -0800
	23	Devices: [National Instruments] PCI-6703 (ni_670x), PCI-6704
	24	Status: unknown
	25
	26	Commands are not supported.
	27	*/
	28
	29	/*
	30	Bart Joris <bjoris@advalvas.be> Last updated on 20/08/2001
	31
	32	Manuals:
	33
	34	322110a.pdf PCI/PXI-6704 User Manual
	35	322110b.pdf PCI/PXI-6703/6704 User Manual
	36
	37	*/
	38
ce157f80	39	#include <linux/module.h>
33782dd5	40	#include <linux/pci.h>
25436dc9	41	#include <linux/interrupt.h>
bda230cf	42	#include <linux/slab.h>
33782dd5	43
3c5e1722 BJ	44	#include "../comedidev.h"
3c5e1722 BJ	45
3c5e1722 BJ	46	#define AO_VALUE_OFFSET 0x00
	47	#define AO_CHAN_OFFSET 0x0c
	48	#define AO_STATUS_OFFSET 0x10
	49	#define AO_CONTROL_OFFSET 0x10
	50	#define DIO_PORT0_DIR_OFFSET 0x20
	51	#define DIO_PORT0_DATA_OFFSET 0x24
	52	#define DIO_PORT1_DIR_OFFSET 0x28
	53	#define DIO_PORT1_DATA_OFFSET 0x2c
	54	#define MISC_STATUS_OFFSET 0x14
	55	#define MISC_CONTROL_OFFSET 0x14
	56
3bac78ca HS	57	enum ni_670x_boardid {
	58	BOARD_PCI6703,
	59	BOARD_PXI6704,
	60	BOARD_PCI6704,
	61	};
3c5e1722	62
43313b07	63	struct ni_670x_board {
3c5e1722 BJ	64	const char *name;
3c5e1722 BJ	65	unsigned short ao_chans;
43313b07 BP	66	};
	67
	68	static const struct ni_670x_board ni_670x_boards[] = {
3bac78ca	69	[BOARD_PCI6703] = {
04b136b6	70	.name = "PCI-6703",
04b136b6	71	.ao_chans = 16,
3bac78ca HS	72	},
3bac78ca HS	73	[BOARD_PXI6704] = {
04b136b6	74	.name = "PXI-6704",
04b136b6	75	.ao_chans = 32,
3bac78ca HS	76	},
3bac78ca HS	77	[BOARD_PCI6704] = {
04b136b6	78	.name = "PCI-6704",
04b136b6	79	.ao_chans = 32,
04b136b6	80	},
3c5e1722 BJ	81	};
3c5e1722 BJ	82
8ce8a1ff	83	struct ni_670x_private {
3c5e1722 BJ	84	int boardtype;
3c5e1722 BJ	85	int dio;
8ce8a1ff BP	86	};
8ce8a1ff BP	87
d34b3d41 HS	88	static int ni_670x_ao_insn_write(struct comedi_device *dev,
	89	struct comedi_subdevice *s,
	90	struct comedi_insn *insn,
	91	unsigned int *data)
3c5e1722	92	{
d34b3d41	93	unsigned int chan = CR_CHAN(insn->chanspec);
1d0750ce	94	unsigned int val = s->readback[chan];
3c5e1722	95	int i;
3c5e1722	96
d34b3d41 HS	97	/*
	98	* Channel number mapping:
	99	*
	100	* NI 6703/ NI 6704 \| NI 6704 Only
	101	* -------------------------------
	102	* vch(0) : 0 \| ich(16) : 1
	103	* vch(1) : 2 \| ich(17) : 3
	104	* ... \| ...
	105	* vch(15) : 30 \| ich(31) : 31
	106	*/
3c5e1722	107	for (i = 0; i < insn->n; i++) {
d34b3d41	108	val = data[i];
c733110a BA	109	/* First write in channel register which channel to use */
c733110a BA	110	writel(((chan & 15) << 1) \| ((chan & 16) >> 4),
176db588	111	dev->mmio + AO_CHAN_OFFSET);
c733110a	112	/* write channel value */
d34b3d41	113	writel(val, dev->mmio + AO_VALUE_OFFSET);
3c5e1722	114	}
1d0750ce	115	s->readback[chan] = val;
3c5e1722	116
d34b3d41	117	return insn->n;
3c5e1722 BJ	118	}
3c5e1722 BJ	119
0a85b6f0 MT	120	static int ni_670x_dio_insn_bits(struct comedi_device *dev,
0a85b6f0 MT	121	struct comedi_subdevice *s,
97f4289a HS	122	struct comedi_insn *insn,
97f4289a HS	123	unsigned int *data)
3c5e1722	124	{
97f4289a	125	if (comedi_dio_update_state(s, data))
176db588	126	writel(s->state, dev->mmio + DIO_PORT0_DATA_OFFSET);
3c5e1722	127
176db588	128	data[1] = readl(dev->mmio + DIO_PORT0_DATA_OFFSET);
3c5e1722	129
a2714e3e	130	return insn->n;
3c5e1722 BJ	131	}
3c5e1722 BJ	132
0a85b6f0 MT	133	static int ni_670x_dio_insn_config(struct comedi_device *dev,
0a85b6f0 MT	134	struct comedi_subdevice *s,
ddf62f2c HS	135	struct comedi_insn *insn,
ddf62f2c HS	136	unsigned int *data)
3c5e1722	137	{
ddf62f2c HS	138	int ret;
	139
	140	ret = comedi_dio_insn_config(dev, s, insn, data, 0);
	141	if (ret)
	142	return ret;
3c5e1722	143
176db588	144	writel(s->io_bits, dev->mmio + DIO_PORT0_DIR_OFFSET);
3c5e1722 BJ	145
	146	return insn->n;
	147	}
	148
39798450 HS	149	/* ripped from mite.h and mite_setup2() to avoid mite dependancy */
	150	#define MITE_IODWBSR 0xc0 /* IO Device Window Base Size Register */
	151	#define WENAB (1 << 7) /* window enable */
	152
	153	static int ni_670x_mite_init(struct pci_dev *pcidev)
	154	{
	155	void __iomem *mite_base;
	156	u32 main_phys_addr;
	157
	158	/* ioremap the MITE registers (BAR 0) temporarily */
	159	mite_base = pci_ioremap_bar(pcidev, 0);
	160	if (!mite_base)
	161	return -ENOMEM;
	162
	163	/* set data window to main registers (BAR 1) */
	164	main_phys_addr = pci_resource_start(pcidev, 1);
	165	writel(main_phys_addr \| WENAB, mite_base + MITE_IODWBSR);
	166
	167	/* finished with MITE registers */
	168	iounmap(mite_base);
	169	return 0;
	170	}
	171
a690b7e5	172	static int ni_670x_auto_attach(struct comedi_device *dev,
3bac78ca	173	unsigned long context)
944a2f11	174	{
750af5e5	175	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
3bac78ca	176	const struct ni_670x_board *thisboard = NULL;
289a4033	177	struct ni_670x_private *devpriv;
944a2f11 HS	178	struct comedi_subdevice *s;
	179	int ret;
	180	int i;
	181
3bac78ca HS	182	if (context < ARRAY_SIZE(ni_670x_boards))
	183	thisboard = &ni_670x_boards[context];
	184	if (!thisboard)
	185	return -ENODEV;
	186	dev->board_ptr = thisboard;
	187	dev->board_name = thisboard->name;
	188
818f569f HS	189	ret = comedi_pci_enable(dev);
	190	if (ret)
	191	return ret;
818f569f	192
0bdab509	193	devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
c34fa261 HS	194	if (!devpriv)
c34fa261 HS	195	return -ENOMEM;
9a1a6cf8	196
39798450 HS	197	ret = ni_670x_mite_init(pcidev);
39798450 HS	198	if (ret)
944a2f11	199	return ret;
39798450	200
176db588 HS	201	dev->mmio = pci_ioremap_bar(pcidev, 1);
176db588 HS	202	if (!dev->mmio)
39798450	203	return -ENOMEM;
944a2f11 HS	204
	205	ret = comedi_alloc_subdevices(dev, 2);
	206	if (ret)
	207	return ret;
	208
fc041c20	209	s = &dev->subdevices[0];
944a2f11 HS	210	/* analog output subdevice */
	211	s->type = COMEDI_SUBD_AO;
	212	s->subdev_flags = SDF_WRITABLE;
	213	s->n_chan = thisboard->ao_chans;
	214	s->maxdata = 0xffff;
	215	if (s->n_chan == 32) {
	216	const struct comedi_lrange **range_table_list;
	217
	218	range_table_list = kmalloc(sizeof(struct comedi_lrange ) 32,
	219	GFP_KERNEL);
	220	if (!range_table_list)
	221	return -ENOMEM;
	222	s->range_table_list = range_table_list;
	223	for (i = 0; i < 16; i++) {
	224	range_table_list[i] = &range_bipolar10;
	225	range_table_list[16 + i] = &range_0_20mA;
	226	}
	227	} else {
	228	s->range_table = &range_bipolar10;
	229	}
d34b3d41	230	s->insn_write = ni_670x_ao_insn_write;
1d0750ce HS	231	s->insn_read = comedi_readback_insn_read;
	232
	233	ret = comedi_alloc_subdev_readback(s);
	234	if (ret)
	235	return ret;
944a2f11	236
fc041c20	237	s = &dev->subdevices[1];
944a2f11 HS	238	/* digital i/o subdevice */
	239	s->type = COMEDI_SUBD_DIO;
	240	s->subdev_flags = SDF_READABLE \| SDF_WRITABLE;
	241	s->n_chan = 8;
	242	s->maxdata = 1;
	243	s->range_table = &range_digital;
	244	s->insn_bits = ni_670x_dio_insn_bits;
	245	s->insn_config = ni_670x_dio_insn_config;
	246
	247	/* Config of misc registers */
176db588	248	writel(0x10, dev->mmio + MISC_CONTROL_OFFSET);
944a2f11	249	/* Config of ao registers */
176db588	250	writel(0x00, dev->mmio + AO_CONTROL_OFFSET);
944a2f11	251
464c9451	252	return 0;
944a2f11 HS	253	}
	254
	255	static void ni_670x_detach(struct comedi_device *dev)
	256	{
70fcd1b7	257	struct comedi_subdevice *s;
289a4033	258
aac307f9	259	comedi_pci_detach(dev);
70fcd1b7	260	if (dev->n_subdevices) {
fc041c20	261	s = &dev->subdevices[0];
70fcd1b7 HS	262	if (s)
	263	kfree(s->range_table_list);
	264	}
944a2f11 HS	265	}
944a2f11 HS	266
6f37e288 HS	267	static struct comedi_driver ni_670x_driver = {
	268	.driver_name = "ni_670x",
	269	.module = THIS_MODULE,
750af5e5	270	.auto_attach = ni_670x_auto_attach,
6f37e288 HS	271	.detach = ni_670x_detach,
	272	};
	273
a690b7e5	274	static int ni_670x_pci_probe(struct pci_dev *dev,
b8f4ac23	275	const struct pci_device_id *id)
6f37e288	276	{
b8f4ac23	277	return comedi_pci_auto_config(dev, &ni_670x_driver, id->driver_data);
6f37e288 HS	278	}
6f37e288 HS	279
41e043fc	280	static const struct pci_device_id ni_670x_pci_table[] = {
3bac78ca HS	281	{ PCI_VDEVICE(NI, 0x1290), BOARD_PCI6704 },
	282	{ PCI_VDEVICE(NI, 0x1920), BOARD_PXI6704 },
	283	{ PCI_VDEVICE(NI, 0x2c90), BOARD_PCI6703 },
6f37e288 HS	284	{ 0 }
	285	};
	286	MODULE_DEVICE_TABLE(pci, ni_670x_pci_table);
	287
	288	static struct pci_driver ni_670x_pci_driver = {
9e4edd57	289	.name = "ni_670x",
6f37e288 HS	290	.id_table = ni_670x_pci_table,
6f37e288 HS	291	.probe = ni_670x_pci_probe,
9901a4d7	292	.remove = comedi_pci_auto_unconfig,
6f37e288 HS	293	};
	294	module_comedi_pci_driver(ni_670x_driver, ni_670x_pci_driver);
	295
3c323c01 IA	296	MODULE_AUTHOR("Comedi http://www.comedi.org");
	297	MODULE_DESCRIPTION("Comedi low-level driver");
	298	MODULE_LICENSE("GPL");