[linux-2.6-block.git] / drivers / staging / comedi / drivers / mpc8260cpm.c

/*
    comedi/drivers/mpc8260.c
    driver for digital I/O pins on the MPC 8260 CPM module

    COMEDI - Linux Control and Measurement Device Interface
    Copyright (C) 2000,2001 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.

    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: mpc8260cpm
Description: MPC8260 CPM module generic digital I/O lines
Devices: [Motorola] MPC8260 CPM (mpc8260cpm)
Author: ds
Status: experimental
Updated: Sat, 16 Mar 2002 17:34:48 -0800

This driver is specific to the Motorola MPC8260 processor, allowing
you to access the processor's generic digital I/O lines.

It is apparently missing some code.
*/

#include "../comedidev.h"

extern unsigned long mpc8260_dio_reserved[4];

typedef struct {
	int data;

} mpc8260cpm_private;
#define devpriv ((mpc8260cpm_private *)dev->private)

static int mpc8260cpm_attach(struct comedi_device * dev, comedi_devconfig * it);
static int mpc8260cpm_detach(struct comedi_device * dev);
static struct comedi_driver driver_mpc8260cpm = {
      driver_name:"mpc8260cpm",
      module:THIS_MODULE,
      attach:mpc8260cpm_attach,
      detach:mpc8260cpm_detach,
};

COMEDI_INITCLEANUP(driver_mpc8260cpm);

static int mpc8260cpm_dio_config(struct comedi_device * dev, struct comedi_subdevice * s,
	comedi_insn * insn, unsigned int * data);
static int mpc8260cpm_dio_bits(struct comedi_device * dev, struct comedi_subdevice * s,
	comedi_insn * insn, unsigned int * data);

static int mpc8260cpm_attach(struct comedi_device * dev, comedi_devconfig * it)
{
	struct comedi_subdevice *s;
	int i;

	printk("comedi%d: mpc8260cpm: ", dev->minor);

	dev->board_ptr = mpc8260cpm_boards + dev->board;

	dev->board_name = thisboard->name;

	if (alloc_private(dev, sizeof(mpc8260cpm_private)) < 0)
		return -ENOMEM;

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

	for (i = 0; i < 4; i++) {
		s = dev->subdevices + i;
		s->type = COMEDI_SUBD_DIO;
		s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
		s->n_chan = 32;
		s->maxdata = 1;
		s->range_table = &range_digital;
		s->insn_config = mpc8260cpm_dio_config;
		s->insn_bits = mpc8260cpm_dio_bits;
	}

	return 1;
}

static int mpc8260cpm_detach(struct comedi_device * dev)
{
	printk("comedi%d: mpc8260cpm: remove\n", dev->minor);

	return 0;
}

static unsigned long *cpm_pdat(int port)
{
	switch (port) {
	case 0:
		return &io->iop_pdata;
	case 1:
		return &io->iop_pdatb;
	case 2:
		return &io->iop_pdatc;
	case 3:
		return &io->iop_pdatd;
	}
}

static int mpc8260cpm_dio_config(struct comedi_device * dev, struct comedi_subdevice * s,
	comedi_insn * insn, unsigned int * data)
{
	int n;
	unsigned int d;
	unsigned int mask;
	int port;

	port = (int)s->private;
	mask = 1 << CR_CHAN(insn->chanspec);
	if (mask & cpm_reserved_bits[port]) {
		return -EINVAL;
	}

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

	switch (port) {
	case 0:
		return &io->iop_pdira;
	case 1:
		return &io->iop_pdirb;
	case 2:
		return &io->iop_pdirc;
	case 3:
		return &io->iop_pdird;
	}

	return 1;
}

static int mpc8260cpm_dio_bits(struct comedi_device * dev, struct comedi_subdevice * s,
	comedi_insn * insn, unsigned int * data)
{
	int port;
	unsigned long *p;

	p = cpm_pdat((int)s->private);

	return 2;
}
Commit	Line	Data
3124dd1c DS	1	/*
	2	comedi/drivers/mpc8260.c
	3	driver for digital I/O pins on the MPC 8260 CPM module
	4
	5	COMEDI - Linux Control and Measurement Device Interface
	6	Copyright (C) 2000,2001 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.
	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: mpc8260cpm
	25	Description: MPC8260 CPM module generic digital I/O lines
	26	Devices: [Motorola] MPC8260 CPM (mpc8260cpm)
	27	Author: ds
	28	Status: experimental
	29	Updated: Sat, 16 Mar 2002 17:34:48 -0800
	30
	31	This driver is specific to the Motorola MPC8260 processor, allowing
	32	you to access the processor's generic digital I/O lines.
	33
	34	It is apparently missing some code.
	35	*/
	36
	37	#include "../comedidev.h"
	38
	39	extern unsigned long mpc8260_dio_reserved[4];
	40
	41	typedef struct {
	42	int data;
	43
	44	} mpc8260cpm_private;
	45	#define devpriv ((mpc8260cpm_private *)dev->private)
	46
71b5f4f1 BP	47	static int mpc8260cpm_attach(struct comedi_device * dev, comedi_devconfig * it);
71b5f4f1 BP	48	static int mpc8260cpm_detach(struct comedi_device * dev);
139dfbdf	49	static struct comedi_driver driver_mpc8260cpm = {
3124dd1c DS	50	driver_name:"mpc8260cpm",
	51	module:THIS_MODULE,
	52	attach:mpc8260cpm_attach,
	53	detach:mpc8260cpm_detach,
	54	};
	55
	56	COMEDI_INITCLEANUP(driver_mpc8260cpm);
	57
34c43922	58	static int mpc8260cpm_dio_config(struct comedi_device * dev, struct comedi_subdevice * s,
790c5541	59	comedi_insn * insn, unsigned int * data);
34c43922	60	static int mpc8260cpm_dio_bits(struct comedi_device * dev, struct comedi_subdevice * s,
790c5541	61	comedi_insn * insn, unsigned int * data);
3124dd1c	62
71b5f4f1	63	static int mpc8260cpm_attach(struct comedi_device * dev, comedi_devconfig * it)
3124dd1c	64	{
34c43922	65	struct comedi_subdevice *s;
3124dd1c DS	66	int i;
	67
	68	printk("comedi%d: mpc8260cpm: ", dev->minor);
	69
	70	dev->board_ptr = mpc8260cpm_boards + dev->board;
	71
	72	dev->board_name = thisboard->name;
	73
	74	if (alloc_private(dev, sizeof(mpc8260cpm_private)) < 0)
	75	return -ENOMEM;
	76
	77	if (alloc_subdevices(dev, 4) < 0)
	78	return -ENOMEM;
	79
	80	for (i = 0; i < 4; i++) {
	81	s = dev->subdevices + i;
	82	s->type = COMEDI_SUBD_DIO;
	83	s->subdev_flags = SDF_READABLE \| SDF_WRITABLE;
	84	s->n_chan = 32;
	85	s->maxdata = 1;
	86	s->range_table = &range_digital;
	87	s->insn_config = mpc8260cpm_dio_config;
	88	s->insn_bits = mpc8260cpm_dio_bits;
	89	}
	90
	91	return 1;
	92	}
	93
71b5f4f1	94	static int mpc8260cpm_detach(struct comedi_device * dev)
3124dd1c DS	95	{
	96	printk("comedi%d: mpc8260cpm: remove\n", dev->minor);
	97
	98	return 0;
	99	}
	100
	101	static unsigned long *cpm_pdat(int port)
	102	{
	103	switch (port) {
	104	case 0:
	105	return &io->iop_pdata;
	106	case 1:
	107	return &io->iop_pdatb;
	108	case 2:
	109	return &io->iop_pdatc;
	110	case 3:
	111	return &io->iop_pdatd;
	112	}
	113	}
	114
34c43922	115	static int mpc8260cpm_dio_config(struct comedi_device * dev, struct comedi_subdevice * s,
790c5541	116	comedi_insn * insn, unsigned int * data)
3124dd1c DS	117	{
	118	int n;
	119	unsigned int d;
	120	unsigned int mask;
	121	int port;
	122
	123	port = (int)s->private;
	124	mask = 1 << CR_CHAN(insn->chanspec);
	125	if (mask & cpm_reserved_bits[port]) {
	126	return -EINVAL;
	127	}
	128
	129	switch (data[0]) {
	130	case INSN_CONFIG_DIO_OUTPUT:
	131	s->io_bits \|= mask;
	132	break;
	133	case INSN_CONFIG_DIO_INPUT:
	134	s->io_bits &= ~mask;
	135	break;
	136	case INSN_CONFIG_DIO_QUERY:
	137	data[1] = (s->io_bits & mask) ? COMEDI_OUTPUT : COMEDI_INPUT;
	138	return insn->n;
	139	break;
	140	default:
	141	return -EINVAL;
	142	}
	143
	144	switch (port) {
	145	case 0:
	146	return &io->iop_pdira;
	147	case 1:
	148	return &io->iop_pdirb;
	149	case 2:
	150	return &io->iop_pdirc;
	151	case 3:
	152	return &io->iop_pdird;
	153	}
	154
	155	return 1;
	156	}
	157
34c43922	158	static int mpc8260cpm_dio_bits(struct comedi_device * dev, struct comedi_subdevice * s,
790c5541	159	comedi_insn * insn, unsigned int * data)
3124dd1c DS	160	{
	161	int port;
	162	unsigned long *p;
	163
	164	p = cpm_pdat((int)s->private);
	165
	166	return 2;
	167	}