+++ /dev/null
-/*
- 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];
-
-struct mpc8260cpm_private {
-
- int data;
-
-};
-
-#define devpriv ((struct mpc8260cpm_private *)dev->private)
-
-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,
- struct 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,
- struct comedi_insn *insn, unsigned int *data)
-{
- int port;
- unsigned long *p;
-
- p = cpm_pdat((int)s->private);
-
- return insn->n;
-}
-
-static int mpc8260cpm_attach(struct comedi_device *dev,
- struct comedi_devconfig *it)
-{
- struct comedi_subdevice *s;
- int i;
- int ret;
-
- printk("comedi%d: mpc8260cpm: ", dev->minor);
-
- dev->board_ptr = mpc8260cpm_boards + dev->board;
-
- dev->board_name = thisboard->name;
-
- if (alloc_private(dev, sizeof(struct mpc8260cpm_private)) < 0)
- return -ENOMEM;
-
- ret =comedi_alloc_subdevices(dev, 4);
- if (ret)
- return ret;
-
- 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 void mpc8260cpm_detach(struct comedi_device *dev)
-{
- /* Nothing to cleanup */
-}
-
-static struct comedi_driver mpc8260cpm_driver = {
- .driver_name = "mpc8260cpm",
- .module = THIS_MODULE,
- .attach = mpc8260cpm_attach,
- .detach = mpc8260cpm_detach,
-};
-module_comedi_driver(mpc8260cpm_driver);