2 comedi/drivers/mpc8260.c
3 driver for digital I/O pins on the MPC 8260 CPM module
5 COMEDI - Linux Control and Measurement Device Interface
6 Copyright (C) 2000,2001 David A. Schleef <ds@schleef.org>
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.
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.
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.
25 Description: MPC8260 CPM module generic digital I/O lines
26 Devices: [Motorola] MPC8260 CPM (mpc8260cpm)
29 Updated: Sat, 16 Mar 2002 17:34:48 -0800
31 This driver is specific to the Motorola MPC8260 processor, allowing
32 you to access the processor's generic digital I/O lines.
34 It is apparently missing some code.
37 #include "../comedidev.h"
39 extern unsigned long mpc8260_dio_reserved[4];
45 #define devpriv ((mpc8260cpm_private *)dev->private)
47 static int mpc8260cpm_attach(struct comedi_device * dev, struct comedi_devconfig * it);
48 static int mpc8260cpm_detach(struct comedi_device * dev);
49 static struct comedi_driver driver_mpc8260cpm = {
50 driver_name:"mpc8260cpm",
52 attach:mpc8260cpm_attach,
53 detach:mpc8260cpm_detach,
56 COMEDI_INITCLEANUP(driver_mpc8260cpm);
58 static int mpc8260cpm_dio_config(struct comedi_device * dev, struct comedi_subdevice * s,
59 struct comedi_insn * insn, unsigned int * data);
60 static int mpc8260cpm_dio_bits(struct comedi_device * dev, struct comedi_subdevice * s,
61 struct comedi_insn * insn, unsigned int * data);
63 static int mpc8260cpm_attach(struct comedi_device * dev, struct comedi_devconfig * it)
65 struct comedi_subdevice *s;
68 printk("comedi%d: mpc8260cpm: ", dev->minor);
70 dev->board_ptr = mpc8260cpm_boards + dev->board;
72 dev->board_name = thisboard->name;
74 if (alloc_private(dev, sizeof(mpc8260cpm_private)) < 0)
77 if (alloc_subdevices(dev, 4) < 0)
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;
86 s->range_table = &range_digital;
87 s->insn_config = mpc8260cpm_dio_config;
88 s->insn_bits = mpc8260cpm_dio_bits;
94 static int mpc8260cpm_detach(struct comedi_device * dev)
96 printk("comedi%d: mpc8260cpm: remove\n", dev->minor);
101 static unsigned long *cpm_pdat(int port)
105 return &io->iop_pdata;
107 return &io->iop_pdatb;
109 return &io->iop_pdatc;
111 return &io->iop_pdatd;
115 static int mpc8260cpm_dio_config(struct comedi_device * dev, struct comedi_subdevice * s,
116 struct comedi_insn * insn, unsigned int * data)
123 port = (int)s->private;
124 mask = 1 << CR_CHAN(insn->chanspec);
125 if (mask & cpm_reserved_bits[port]) {
130 case INSN_CONFIG_DIO_OUTPUT:
133 case INSN_CONFIG_DIO_INPUT:
136 case INSN_CONFIG_DIO_QUERY:
137 data[1] = (s->io_bits & mask) ? COMEDI_OUTPUT : COMEDI_INPUT;
146 return &io->iop_pdira;
148 return &io->iop_pdirb;
150 return &io->iop_pdirc;
152 return &io->iop_pdird;
158 static int mpc8260cpm_dio_bits(struct comedi_device * dev, struct comedi_subdevice * s,
159 struct comedi_insn * insn, unsigned int * data)
164 p = cpm_pdat((int)s->private);