[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / staging / comedi / drivers / ni_at_ao.c

/*
    comedi/drivers/ni_at_ao.c
    Driver for NI AT-AO-6/10 boards

    COMEDI - Linux Control and Measurement Device Interface
    Copyright (C) 2000,2002 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: ni_at_ao
Description: National Instruments AT-AO-6/10
Devices: [National Instruments] AT-AO-6 (at-ao-6), AT-AO-10 (at-ao-10)
Status: should work
Author: ds
Updated: Sun Dec 26 12:26:28 EST 2004

Configuration options:
  [0] - I/O port base address
  [1] - IRQ (unused)
  [2] - DMA (unused)
  [3] - analog output range, set by jumpers on hardware (0 for -10 to 10V
	bipolar, 1 for 0V to 10V unipolar)

*/
/*
 * Register-level programming information can be found in NI
 * document 320379.pdf.
 */

#include "../comedidev.h"

#include <linux/ioport.h>

/* board egisters */
/* registers with _2_ are accessed when GRP2WR is set in CFG1 */

#define ATAO_SIZE 0x20

#define ATAO_2_DMATCCLR		0x00	/* W 16 */
#define ATAO_DIN		0x00	/* R 16 */
#define ATAO_DOUT		0x00	/* W 16 */

#define ATAO_CFG2		0x02	/* W 16 */
#define CALLD1	0x8000
#define CALLD0	0x4000
#define FFRTEN	0x2000
#define DAC2S8	0x1000
#define DAC2S6	0x0800
#define DAC2S4	0x0400
#define DAC2S2	0x0200
#define DAC2S0	0x0100
#define LDAC8		0x0080
#define LDAC6		0x0040
#define LDAC4		0x0020
#define LDAC2		0x0010
#define LDAC0		0x0008
#define PROMEN	0x0004
#define SCLK		0x0002
#define SDATA		0x0001

#define ATAO_2_INT1CLR		0x02	/* W 16 */

#define ATAO_CFG3		0x04	/* W 16 */
#define DMAMODE	0x0040
#define CLKOUT	0x0020
#define RCLKEN	0x0010
#define DOUTEN2	0x0008
#define DOUTEN1	0x0004
#define EN2_5V	0x0002
#define SCANEN	0x0001

#define ATAO_2_INT2CLR		0x04	/* W 16 */

#define ATAO_82C53_BASE		0x06	/* RW 8 */

#define ATAO_82C53_CNTR1	0x06	/* RW 8 */
#define ATAO_82C53_CNTR2	0x07	/* RW 8 */
#define ATAO_82C53_CNTR3	0x08	/* RW 8 */
#define ATAO_82C53_CNTRCMD	0x09	/* W 8 */
#define CNTRSEL1	0x80
#define CNTRSEL0	0x40
#define RWSEL1	0x20
#define RWSEL0	0x10
#define MODESEL2	0x08
#define MODESEL1	0x04
#define MODESEL0	0x02
#define BCDSEL	0x01
  /* read-back command */
#define COUNT		0x20
#define STATUS	0x10
#define CNTR3		0x08
#define CNTR2		0x04
#define CNTR1		0x02
  /* status */
#define OUT		0x80
#define _NULL		0x40
#define RW1		0x20
#define RW0		0x10
#define MODE2		0x08
#define MODE1		0x04
#define MODE0		0x02
#define BCD		0x01

#define ATAO_2_RTSISHFT		0x06	/* W 8 */
#define RSI		0x01

#define ATAO_2_RTSISTRB		0x07	/* W 8 */

#define ATAO_CFG1		0x0a	/* W 16 */
#define EXTINT2EN	0x8000
#define EXTINT1EN	0x4000
#define CNTINT2EN	0x2000
#define CNTINT1EN	0x1000
#define TCINTEN	0x0800
#define CNT1SRC	0x0400
#define CNT2SRC	0x0200
#define FIFOEN	0x0100
#define GRP2WR	0x0080
#define EXTUPDEN	0x0040
#define DMARQ		0x0020
#define DMAEN		0x0010
#define CH_mask	0x000f
#define ATAO_STATUS		0x0a	/* R 16 */
#define FH		0x0040
#define FE		0x0020
#define FF		0x0010
#define INT2		0x0008
#define INT1		0x0004
#define TCINT		0x0002
#define PROMOUT	0x0001

#define ATAO_FIFO_WRITE		0x0c	/* W 16 */
#define ATAO_FIFO_CLEAR		0x0c	/* R 16 */
#define ATAO_DACn(x)		(0x0c + 2*(x))	/* W */

/*
 * Board descriptions for two imaginary boards.  Describing the
 * boards in this way is optional, and completely driver-dependent.
 * Some drivers use arrays such as this, other do not.
 */
struct atao_board {
	const char *name;
	int n_ao_chans;
};

static const struct atao_board atao_boards[] = {
	{
	 .name = "ai-ao-6",
	 .n_ao_chans = 6,
	 },
	{
	 .name = "ai-ao-10",
	 .n_ao_chans = 10,
	 },
};

#define thisboard ((struct atao_board *)dev->board_ptr)

struct atao_private {

	unsigned short cfg1;
	unsigned short cfg2;
	unsigned short cfg3;

	/* Used for AO readback */
	unsigned int ao_readback[10];
};

#define devpriv ((struct atao_private *)dev->private)

static int atao_attach(struct comedi_device *dev, struct comedi_devconfig *it);
static int atao_detach(struct comedi_device *dev);
static struct comedi_driver driver_atao = {
	.driver_name = "ni_at_ao",
	.module = THIS_MODULE,
	.attach = atao_attach,
	.detach = atao_detach,
	.board_name = &atao_boards[0].name,
	.offset = sizeof(struct atao_board),
	.num_names = ARRAY_SIZE(atao_boards),
};

static int __init driver_atao_init_module(void)
{
	return comedi_driver_register(&driver_atao);
}

static void __exit driver_atao_cleanup_module(void)
{
	comedi_driver_unregister(&driver_atao);
}

module_init(driver_atao_init_module);
module_exit(driver_atao_cleanup_module);

static void atao_reset(struct comedi_device *dev);

static int atao_ao_winsn(struct comedi_device *dev, struct comedi_subdevice *s,
			 struct comedi_insn *insn, unsigned int *data);
static int atao_ao_rinsn(struct comedi_device *dev, struct comedi_subdevice *s,
			 struct comedi_insn *insn, unsigned int *data);
static int atao_dio_insn_bits(struct comedi_device *dev,
			      struct comedi_subdevice *s,
			      struct comedi_insn *insn, unsigned int *data);
static int atao_dio_insn_config(struct comedi_device *dev,
				struct comedi_subdevice *s,
				struct comedi_insn *insn, unsigned int *data);
static int atao_calib_insn_read(struct comedi_device *dev,
				struct comedi_subdevice *s,
				struct comedi_insn *insn, unsigned int *data);
static int atao_calib_insn_write(struct comedi_device *dev,
				 struct comedi_subdevice *s,
				 struct comedi_insn *insn, unsigned int *data);

static int atao_attach(struct comedi_device *dev, struct comedi_devconfig *it)
{
	struct comedi_subdevice *s;
	unsigned long iobase;
	int ao_unipolar;

	iobase = it->options[0];
	if (iobase == 0)
		iobase = 0x1c0;
	ao_unipolar = it->options[3];

	printk(KERN_INFO "comedi%d: ni_at_ao: 0x%04lx", dev->minor, iobase);

	if (!request_region(iobase, ATAO_SIZE, "ni_at_ao")) {
		printk(" I/O port conflict\n");
		return -EIO;
	}
	dev->iobase = iobase;

	/* dev->board_ptr = atao_probe(dev); */

	dev->board_name = thisboard->name;

	if (alloc_private(dev, sizeof(struct atao_private)) < 0)
		return -ENOMEM;

	if (alloc_subdevices(dev, 4) < 0)
		return -ENOMEM;

	s = dev->subdevices + 0;
	/* analog output subdevice */
	s->type = COMEDI_SUBD_AO;
	s->subdev_flags = SDF_WRITABLE;
	s->n_chan = thisboard->n_ao_chans;
	s->maxdata = (1 << 12) - 1;
	if (ao_unipolar)
		s->range_table = &range_unipolar10;
	else
		s->range_table = &range_bipolar10;
	s->insn_write = &atao_ao_winsn;
	s->insn_read = &atao_ao_rinsn;

	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 = atao_dio_insn_bits;
	s->insn_config = atao_dio_insn_config;

	s = dev->subdevices + 2;
	/* caldac subdevice */
	s->type = COMEDI_SUBD_CALIB;
	s->subdev_flags = SDF_WRITABLE | SDF_INTERNAL;
	s->n_chan = 21;
	s->maxdata = 0xff;
	s->insn_read = atao_calib_insn_read;
	s->insn_write = atao_calib_insn_write;

	s = dev->subdevices + 3;
	/* eeprom subdevice */
	/* s->type=COMEDI_SUBD_EEPROM; */
	s->type = COMEDI_SUBD_UNUSED;

	atao_reset(dev);

	printk(KERN_INFO "\n");

	return 0;
}

static int atao_detach(struct comedi_device *dev)
{
	printk(KERN_INFO "comedi%d: atao: remove\n", dev->minor);

	if (dev->iobase)
		release_region(dev->iobase, ATAO_SIZE);

	return 0;
}

static void atao_reset(struct comedi_device *dev)
{
	/* This is the reset sequence described in the manual */

	devpriv->cfg1 = 0;
	outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);

	outb(RWSEL0 | MODESEL2, dev->iobase + ATAO_82C53_CNTRCMD);
	outb(0x03, dev->iobase + ATAO_82C53_CNTR1);
	outb(CNTRSEL0 | RWSEL0 | MODESEL2, dev->iobase + ATAO_82C53_CNTRCMD);

	devpriv->cfg2 = 0;
	outw(devpriv->cfg2, dev->iobase + ATAO_CFG2);

	devpriv->cfg3 = 0;
	outw(devpriv->cfg3, dev->iobase + ATAO_CFG3);

	inw(dev->iobase + ATAO_FIFO_CLEAR);

	devpriv->cfg1 |= GRP2WR;
	outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);

	outw(0, dev->iobase + ATAO_2_INT1CLR);
	outw(0, dev->iobase + ATAO_2_INT2CLR);
	outw(0, dev->iobase + ATAO_2_DMATCCLR);

	devpriv->cfg1 &= ~GRP2WR;
	outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);
}

static int atao_ao_winsn(struct comedi_device *dev, struct comedi_subdevice *s,
			 struct comedi_insn *insn, unsigned int *data)
{
	int i;
	int chan = CR_CHAN(insn->chanspec);
	short bits;

	for (i = 0; i < insn->n; i++) {
		bits = data[i] - 0x800;
		if (chan == 0) {
			devpriv->cfg1 |= GRP2WR;
			outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);
		}
		outw(bits, dev->iobase + ATAO_DACn(chan));
		if (chan == 0) {
			devpriv->cfg1 &= ~GRP2WR;
			outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);
		}
		devpriv->ao_readback[chan] = data[i];
	}

	return i;
}

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

	for (i = 0; i < insn->n; i++)
		data[i] = devpriv->ao_readback[chan];

	return i;
}

static int atao_dio_insn_bits(struct comedi_device *dev,
			      struct comedi_subdevice *s,
			      struct comedi_insn *insn, unsigned int *data)
{
	if (insn->n != 2)
		return -EINVAL;

	if (data[0]) {
		s->state &= ~data[0];
		s->state |= data[0] & data[1];
		outw(s->state, dev->iobase + ATAO_DOUT);
	}

	data[1] = inw(dev->iobase + ATAO_DIN);

	return 2;
}

static int atao_dio_insn_config(struct comedi_device *dev,
				struct comedi_subdevice *s,
				struct comedi_insn *insn, unsigned int *data)
{
	int chan = CR_CHAN(insn->chanspec);
	unsigned int mask, bit;

	/* The input or output configuration of each digital line is
	 * configured by a special insn_config instruction.  chanspec
	 * contains the channel to be changed, and data[0] contains the
	 * value COMEDI_INPUT or COMEDI_OUTPUT. */

	mask = (chan < 4) ? 0x0f : 0xf0;
	bit = (chan < 4) ? DOUTEN1 : DOUTEN2;

	switch (data[0]) {
	case INSN_CONFIG_DIO_OUTPUT:
		s->io_bits |= mask;
		devpriv->cfg3 |= bit;
		break;
	case INSN_CONFIG_DIO_INPUT:
		s->io_bits &= ~mask;
		devpriv->cfg3 &= ~bit;
		break;
	case INSN_CONFIG_DIO_QUERY:
		data[1] =
		    (s->io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT;
		return insn->n;
		break;
	default:
		return -EINVAL;
		break;
	}

	outw(devpriv->cfg3, dev->iobase + ATAO_CFG3);

	return 1;
}

/*
 * Figure 2-1 in the manual shows 3 chips labeled DAC8800, which
 * are 8-channel 8-bit DACs.  These are most likely the calibration
 * DACs.  It is not explicitly stated in the manual how to access
 * the caldacs, but we can guess.
 */
static int atao_calib_insn_read(struct comedi_device *dev,
				struct comedi_subdevice *s,
				struct comedi_insn *insn, unsigned int *data)
{
	int i;
	for (i = 0; i < insn->n; i++)
		data[i] = 0;	/* XXX */
	return insn->n;
}

static int atao_calib_insn_write(struct comedi_device *dev,
				 struct comedi_subdevice *s,
				 struct comedi_insn *insn, unsigned int *data)
{
	unsigned int bitstring, bit;
	unsigned int chan = CR_CHAN(insn->chanspec);

	bitstring = ((chan & 0x7) << 8) | (data[insn->n - 1] & 0xff);

	for (bit = 1 << (11 - 1); bit; bit >>= 1) {
		outw(devpriv->cfg2 | ((bit & bitstring) ? SDATA : 0),
		     dev->iobase + ATAO_CFG2);
		outw(devpriv->cfg2 | SCLK | ((bit & bitstring) ? SDATA : 0),
		     dev->iobase + ATAO_CFG2);
	}
	/* strobe the appropriate caldac */
	outw(devpriv->cfg2 | (((chan >> 3) + 1) << 14),
	     dev->iobase + ATAO_CFG2);
	outw(devpriv->cfg2, dev->iobase + ATAO_CFG2);

	return insn->n;
}

MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_DESCRIPTION("Comedi low-level driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
6a9d800f DS	1	/*
	2	comedi/drivers/ni_at_ao.c
	3	Driver for NI AT-AO-6/10 boards
	4
	5	COMEDI - Linux Control and Measurement Device Interface
	6	Copyright (C) 2000,2002 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.
	17
	18	You should have received a copy of the GNU General Public License
	19	along with this program; if not, write to the Free Software
	20	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	21
	22	*/
	23	/*
	24	Driver: ni_at_ao
	25	Description: National Instruments AT-AO-6/10
	26	Devices: [National Instruments] AT-AO-6 (at-ao-6), AT-AO-10 (at-ao-10)
	27	Status: should work
	28	Author: ds
	29	Updated: Sun Dec 26 12:26:28 EST 2004
	30
	31	Configuration options:
	32	[0] - I/O port base address
	33	[1] - IRQ (unused)
	34	[2] - DMA (unused)
d1a04408 AR	35	[3] - analog output range, set by jumpers on hardware (0 for -10 to 10V
d1a04408 AR	36	bipolar, 1 for 0V to 10V unipolar)
6a9d800f DS	37
	38	*/
	39	/*
	40	* Register-level programming information can be found in NI
	41	* document 320379.pdf.
	42	*/
	43
	44	#include "../comedidev.h"
	45
	46	#include <linux/ioport.h>
	47
	48	/* board egisters */
	49	/* registers with _2_ are accessed when GRP2WR is set in CFG1 */
	50
	51	#define ATAO_SIZE 0x20
	52
	53	#define ATAO_2_DMATCCLR 0x00 /* W 16 */
	54	#define ATAO_DIN 0x00 /* R 16 */
	55	#define ATAO_DOUT 0x00 /* W 16 */
	56
	57	#define ATAO_CFG2 0x02 /* W 16 */
	58	#define CALLD1 0x8000
	59	#define CALLD0 0x4000
	60	#define FFRTEN 0x2000
	61	#define DAC2S8 0x1000
	62	#define DAC2S6 0x0800
	63	#define DAC2S4 0x0400
	64	#define DAC2S2 0x0200
	65	#define DAC2S0 0x0100
	66	#define LDAC8 0x0080
	67	#define LDAC6 0x0040
	68	#define LDAC4 0x0020
	69	#define LDAC2 0x0010
	70	#define LDAC0 0x0008
	71	#define PROMEN 0x0004
	72	#define SCLK 0x0002
	73	#define SDATA 0x0001
	74
	75	#define ATAO_2_INT1CLR 0x02 /* W 16 */
	76
	77	#define ATAO_CFG3 0x04 /* W 16 */
	78	#define DMAMODE 0x0040
	79	#define CLKOUT 0x0020
	80	#define RCLKEN 0x0010
	81	#define DOUTEN2 0x0008
	82	#define DOUTEN1 0x0004
	83	#define EN2_5V 0x0002
	84	#define SCANEN 0x0001
	85
	86	#define ATAO_2_INT2CLR 0x04 /* W 16 */
	87
	88	#define ATAO_82C53_BASE 0x06 /* RW 8 */
	89
	90	#define ATAO_82C53_CNTR1 0x06 /* RW 8 */
	91	#define ATAO_82C53_CNTR2 0x07 /* RW 8 */
	92	#define ATAO_82C53_CNTR3 0x08 /* RW 8 */
	93	#define ATAO_82C53_CNTRCMD 0x09 /* W 8 */
	94	#define CNTRSEL1 0x80
	95	#define CNTRSEL0 0x40
	96	#define RWSEL1 0x20
	97	#define RWSEL0 0x10
	98	#define MODESEL2 0x08
	99	#define MODESEL1 0x04
	100	#define MODESEL0 0x02
101	#define BCDSEL 0x01
102	/* read-back command */
103	#define COUNT 0x20
104	#define STATUS 0x10
105	#define CNTR3 0x08
106	#define CNTR2 0x04
107	#define CNTR1 0x02
108	/* status */
109	#define OUT 0x80
110	#define _NULL 0x40
111	#define RW1 0x20
112	#define RW0 0x10
113	#define MODE2 0x08
114	#define MODE1 0x04
115	#define MODE0 0x02
116	#define BCD 0x01
117
118	#define ATAO_2_RTSISHFT 0x06 /* W 8 */
119	#define RSI 0x01
120
121	#define ATAO_2_RTSISTRB 0x07 /* W 8 */
122
123	#define ATAO_CFG1 0x0a /* W 16 */
124	#define EXTINT2EN 0x8000
125	#define EXTINT1EN 0x4000
126	#define CNTINT2EN 0x2000
127	#define CNTINT1EN 0x1000
128	#define TCINTEN 0x0800
129	#define CNT1SRC 0x0400
130	#define CNT2SRC 0x0200
131	#define FIFOEN 0x0100
132	#define GRP2WR 0x0080
133	#define EXTUPDEN 0x0040
134	#define DMARQ 0x0020
135	#define DMAEN 0x0010
136	#define CH_mask 0x000f
137	#define ATAO_STATUS 0x0a /* R 16 */
138	#define FH 0x0040
139	#define FE 0x0020
140	#define FF 0x0010
141	#define INT2 0x0008
142	#define INT1 0x0004
143	#define TCINT 0x0002
144	#define PROMOUT 0x0001
145
146	#define ATAO_FIFO_WRITE 0x0c /* W 16 */
147	#define ATAO_FIFO_CLEAR 0x0c /* R 16 */
148	#define ATAO_DACn(x) (0x0c + 2(x)) / W */
149
150	/*
151	* Board descriptions for two imaginary boards. Describing the
152	* boards in this way is optional, and completely driver-dependent.
153	* Some drivers use arrays such as this, other do not.
154	*/
01983c39	155	struct atao_board {
6a9d800f DS	156	const char *name;
6a9d800f DS	157	int n_ao_chans;
01983c39 BP	158	};
	159
	160	static const struct atao_board atao_boards[] = {
6a9d800f	161	{
0a85b6f0 MT	162	.name = "ai-ao-6",
	163	.n_ao_chans = 6,
	164	},
6a9d800f	165	{
0a85b6f0 MT	166	.name = "ai-ao-10",
	167	.n_ao_chans = 10,
	168	},
6a9d800f DS	169	};
6a9d800f DS	170
01983c39	171	#define thisboard ((struct atao_board *)dev->board_ptr)
6a9d800f	172
75b80739 BP	173	struct atao_private {
75b80739 BP	174
6a9d800f DS	175	unsigned short cfg1;
	176	unsigned short cfg2;
	177	unsigned short cfg3;
	178
	179	/* Used for AO readback */
790c5541	180	unsigned int ao_readback[10];
75b80739 BP	181	};
	182
	183	#define devpriv ((struct atao_private *)dev->private)
6a9d800f	184
da91b269 BP	185	static int atao_attach(struct comedi_device dev, struct comedi_devconfig it);
da91b269 BP	186	static int atao_detach(struct comedi_device *dev);
139dfbdf	187	static struct comedi_driver driver_atao = {
68c3dbff BP	188	.driver_name = "ni_at_ao",
	189	.module = THIS_MODULE,
	190	.attach = atao_attach,
	191	.detach = atao_detach,
	192	.board_name = &atao_boards[0].name,
	193	.offset = sizeof(struct atao_board),
8629efa4	194	.num_names = ARRAY_SIZE(atao_boards),
6a9d800f DS	195	};
6a9d800f DS	196
7114a280 AT	197	static int __init driver_atao_init_module(void)
	198	{
	199	return comedi_driver_register(&driver_atao);
	200	}
	201
	202	static void __exit driver_atao_cleanup_module(void)
	203	{
	204	comedi_driver_unregister(&driver_atao);
	205	}
	206
	207	module_init(driver_atao_init_module);
	208	module_exit(driver_atao_cleanup_module);
6a9d800f	209
da91b269 BP	210	static void atao_reset(struct comedi_device *dev);
	211
	212	static int atao_ao_winsn(struct comedi_device dev, struct comedi_subdevice s,
0a85b6f0	213	struct comedi_insn insn, unsigned int data);
da91b269	214	static int atao_ao_rinsn(struct comedi_device dev, struct comedi_subdevice s,
0a85b6f0 MT	215	struct comedi_insn insn, unsigned int data);
	216	static int atao_dio_insn_bits(struct comedi_device *dev,
	217	struct comedi_subdevice *s,
	218	struct comedi_insn insn, unsigned int data);
	219	static int atao_dio_insn_config(struct comedi_device *dev,
	220	struct comedi_subdevice *s,
	221	struct comedi_insn insn, unsigned int data);
	222	static int atao_calib_insn_read(struct comedi_device *dev,
	223	struct comedi_subdevice *s,
	224	struct comedi_insn insn, unsigned int data);
	225	static int atao_calib_insn_write(struct comedi_device *dev,
	226	struct comedi_subdevice *s,
	227	struct comedi_insn insn, unsigned int data);
da91b269 BP	228
da91b269 BP	229	static int atao_attach(struct comedi_device dev, struct comedi_devconfig it)
6a9d800f	230	{
34c43922	231	struct comedi_subdevice *s;
6a9d800f DS	232	unsigned long iobase;
	233	int ao_unipolar;
	234
	235	iobase = it->options[0];
	236	if (iobase == 0)
	237	iobase = 0x1c0;
	238	ao_unipolar = it->options[3];
	239
a2936e0d	240	printk(KERN_INFO "comedi%d: ni_at_ao: 0x%04lx", dev->minor, iobase);
6a9d800f DS	241
	242	if (!request_region(iobase, ATAO_SIZE, "ni_at_ao")) {
	243	printk(" I/O port conflict\n");
	244	return -EIO;
	245	}
	246	dev->iobase = iobase;
	247
2696fb57	248	/* dev->board_ptr = atao_probe(dev); */
6a9d800f DS	249
	250	dev->board_name = thisboard->name;
	251
75b80739	252	if (alloc_private(dev, sizeof(struct atao_private)) < 0)
6a9d800f DS	253	return -ENOMEM;
	254
	255	if (alloc_subdevices(dev, 4) < 0)
	256	return -ENOMEM;
	257
	258	s = dev->subdevices + 0;
	259	/* analog output subdevice */
	260	s->type = COMEDI_SUBD_AO;
	261	s->subdev_flags = SDF_WRITABLE;
	262	s->n_chan = thisboard->n_ao_chans;
	263	s->maxdata = (1 << 12) - 1;
	264	if (ao_unipolar)
	265	s->range_table = &range_unipolar10;
	266	else
	267	s->range_table = &range_bipolar10;
	268	s->insn_write = &atao_ao_winsn;
	269	s->insn_read = &atao_ao_rinsn;
	270
	271	s = dev->subdevices + 1;
	272	/* digital i/o subdevice */
	273	s->type = COMEDI_SUBD_DIO;
	274	s->subdev_flags = SDF_READABLE \| SDF_WRITABLE;
	275	s->n_chan = 8;
	276	s->maxdata = 1;
	277	s->range_table = &range_digital;
	278	s->insn_bits = atao_dio_insn_bits;
	279	s->insn_config = atao_dio_insn_config;
	280
	281	s = dev->subdevices + 2;
	282	/* caldac subdevice */
	283	s->type = COMEDI_SUBD_CALIB;
	284	s->subdev_flags = SDF_WRITABLE \| SDF_INTERNAL;
	285	s->n_chan = 21;
	286	s->maxdata = 0xff;
	287	s->insn_read = atao_calib_insn_read;
	288	s->insn_write = atao_calib_insn_write;
	289
	290	s = dev->subdevices + 3;
	291	/* eeprom subdevice */
2696fb57	292	/* s->type=COMEDI_SUBD_EEPROM; */
6a9d800f DS	293	s->type = COMEDI_SUBD_UNUSED;
	294
	295	atao_reset(dev);
	296
a2936e0d	297	printk(KERN_INFO "\n");
6a9d800f DS	298
	299	return 0;
	300	}
	301
da91b269	302	static int atao_detach(struct comedi_device *dev)
6a9d800f	303	{
a2936e0d	304	printk(KERN_INFO "comedi%d: atao: remove\n", dev->minor);
6a9d800f DS	305
	306	if (dev->iobase)
	307	release_region(dev->iobase, ATAO_SIZE);
	308
	309	return 0;
	310	}
	311
da91b269	312	static void atao_reset(struct comedi_device *dev)
6a9d800f DS	313	{
	314	/* This is the reset sequence described in the manual */
	315
	316	devpriv->cfg1 = 0;
	317	outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);
	318
	319	outb(RWSEL0 \| MODESEL2, dev->iobase + ATAO_82C53_CNTRCMD);
	320	outb(0x03, dev->iobase + ATAO_82C53_CNTR1);
	321	outb(CNTRSEL0 \| RWSEL0 \| MODESEL2, dev->iobase + ATAO_82C53_CNTRCMD);
	322
	323	devpriv->cfg2 = 0;
	324	outw(devpriv->cfg2, dev->iobase + ATAO_CFG2);
	325
	326	devpriv->cfg3 = 0;
	327	outw(devpriv->cfg3, dev->iobase + ATAO_CFG3);
	328
	329	inw(dev->iobase + ATAO_FIFO_CLEAR);
	330
	331	devpriv->cfg1 \|= GRP2WR;
	332	outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);
	333
	334	outw(0, dev->iobase + ATAO_2_INT1CLR);
	335	outw(0, dev->iobase + ATAO_2_INT2CLR);
	336	outw(0, dev->iobase + ATAO_2_DMATCCLR);
	337
	338	devpriv->cfg1 &= ~GRP2WR;
	339	outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);
	340	}
	341
da91b269	342	static int atao_ao_winsn(struct comedi_device dev, struct comedi_subdevice s,
0a85b6f0	343	struct comedi_insn insn, unsigned int data)
6a9d800f DS	344	{
	345	int i;
	346	int chan = CR_CHAN(insn->chanspec);
	347	short bits;
	348
	349	for (i = 0; i < insn->n; i++) {
	350	bits = data[i] - 0x800;
	351	if (chan == 0) {
	352	devpriv->cfg1 \|= GRP2WR;
	353	outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);
	354	}
	355	outw(bits, dev->iobase + ATAO_DACn(chan));
	356	if (chan == 0) {
	357	devpriv->cfg1 &= ~GRP2WR;
	358	outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);
	359	}
	360	devpriv->ao_readback[chan] = data[i];
	361	}
	362
	363	return i;
	364	}
	365
da91b269	366	static int atao_ao_rinsn(struct comedi_device dev, struct comedi_subdevice s,
0a85b6f0	367	struct comedi_insn insn, unsigned int data)
6a9d800f DS	368	{
	369	int i;
	370	int chan = CR_CHAN(insn->chanspec);
	371
	372	for (i = 0; i < insn->n; i++)
	373	data[i] = devpriv->ao_readback[chan];
	374
	375	return i;
	376	}
	377
0a85b6f0 MT	378	static int atao_dio_insn_bits(struct comedi_device *dev,
	379	struct comedi_subdevice *s,
	380	struct comedi_insn insn, unsigned int data)
6a9d800f DS	381	{
	382	if (insn->n != 2)
	383	return -EINVAL;
	384
	385	if (data[0]) {
	386	s->state &= ~data[0];
	387	s->state \|= data[0] & data[1];
	388	outw(s->state, dev->iobase + ATAO_DOUT);
	389	}
	390
	391	data[1] = inw(dev->iobase + ATAO_DIN);
	392
	393	return 2;
	394	}
	395
0a85b6f0 MT	396	static int atao_dio_insn_config(struct comedi_device *dev,
	397	struct comedi_subdevice *s,
	398	struct comedi_insn insn, unsigned int data)
6a9d800f DS	399	{
	400	int chan = CR_CHAN(insn->chanspec);
	401	unsigned int mask, bit;
	402
	403	/* The input or output configuration of each digital line is
	404	* configured by a special insn_config instruction. chanspec
	405	* contains the channel to be changed, and data[0] contains the
	406	* value COMEDI_INPUT or COMEDI_OUTPUT. */
	407
	408	mask = (chan < 4) ? 0x0f : 0xf0;
	409	bit = (chan < 4) ? DOUTEN1 : DOUTEN2;
	410
	411	switch (data[0]) {
	412	case INSN_CONFIG_DIO_OUTPUT:
	413	s->io_bits \|= mask;
	414	devpriv->cfg3 \|= bit;
	415	break;
	416	case INSN_CONFIG_DIO_INPUT:
	417	s->io_bits &= ~mask;
	418	devpriv->cfg3 &= ~bit;
	419	break;
	420	case INSN_CONFIG_DIO_QUERY:
	421	data[1] =
0a85b6f0	422	(s->io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT;
6a9d800f DS	423	return insn->n;
	424	break;
	425	default:
	426	return -EINVAL;
	427	break;
	428	}
	429
	430	outw(devpriv->cfg3, dev->iobase + ATAO_CFG3);
	431
	432	return 1;
	433	}
	434
	435	/*
	436	* Figure 2-1 in the manual shows 3 chips labeled DAC8800, which
	437	* are 8-channel 8-bit DACs. These are most likely the calibration
	438	* DACs. It is not explicitly stated in the manual how to access
	439	* the caldacs, but we can guess.
	440	*/
0a85b6f0 MT	441	static int atao_calib_insn_read(struct comedi_device *dev,
	442	struct comedi_subdevice *s,
	443	struct comedi_insn insn, unsigned int data)
6a9d800f DS	444	{
6a9d800f DS	445	int i;
d1a04408	446	for (i = 0; i < insn->n; i++)
6a9d800f	447	data[i] = 0; /* XXX */
6a9d800f DS	448	return insn->n;
	449	}
	450
0a85b6f0 MT	451	static int atao_calib_insn_write(struct comedi_device *dev,
	452	struct comedi_subdevice *s,
	453	struct comedi_insn insn, unsigned int data)
6a9d800f DS	454	{
	455	unsigned int bitstring, bit;
	456	unsigned int chan = CR_CHAN(insn->chanspec);
	457
	458	bitstring = ((chan & 0x7) << 8) \| (data[insn->n - 1] & 0xff);
	459
	460	for (bit = 1 << (11 - 1); bit; bit >>= 1) {
	461	outw(devpriv->cfg2 \| ((bit & bitstring) ? SDATA : 0),
0a85b6f0	462	dev->iobase + ATAO_CFG2);
6a9d800f	463	outw(devpriv->cfg2 \| SCLK \| ((bit & bitstring) ? SDATA : 0),
0a85b6f0	464	dev->iobase + ATAO_CFG2);
6a9d800f DS	465	}
	466	/* strobe the appropriate caldac */
	467	outw(devpriv->cfg2 \| (((chan >> 3) + 1) << 14),
0a85b6f0	468	dev->iobase + ATAO_CFG2);
6a9d800f DS	469	outw(devpriv->cfg2, dev->iobase + ATAO_CFG2);
	470
	471	return insn->n;
	472	}
90f703d3 AT	473
	474	MODULE_AUTHOR("Comedi http://www.comedi.org");
	475	MODULE_DESCRIPTION("Comedi low-level driver");
	476	MODULE_LICENSE("GPL");