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
, 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 comedi_insn
* insn
, unsigned int * data
);
60 static int mpc8260cpm_dio_bits(struct comedi_device
* dev
, struct comedi_subdevice
* s
,
61 comedi_insn
* insn
, unsigned int * data
);
63 static int mpc8260cpm_attach(struct comedi_device
* dev
, 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 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 comedi_insn
* insn
, unsigned int * data
)
164 p
= cpm_pdat((int)s
->private);