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 <linux/comedidev.h>
40 extern unsigned long mpc8260_dio_reserved[4];
46 #define devpriv ((mpc8260cpm_private *)dev->private)
48 static int mpc8260cpm_attach(comedi_device *dev,comedi_devconfig *it);
49 static int mpc8260cpm_detach(comedi_device *dev);
50 static comedi_driver driver_mpc8260cpm={
53 attach: mpc8260cpm_attach,
54 detach: mpc8260cpm_detach,
56 COMEDI_INITCLEANUP(driver_mpc8260cpm);
58 static int mpc8260cpm_dio_config(comedi_device *dev,comedi_subdevice *s,comedi_insn *insn,lsampl_t *data);
59 static int mpc8260cpm_dio_bits(comedi_device *dev,comedi_subdevice *s,comedi_insn *insn,lsampl_t *data);
61 static int mpc8260cpm_attach(comedi_device *dev,comedi_devconfig *it)
66 printk("comedi%d: mpc8260cpm: ",dev->minor);
68 dev->board_ptr = mpc8260cpm_boards + dev->board;
70 dev->board_name = thisboard->name;
72 if(alloc_private(dev,sizeof(mpc8260cpm_private))<0)
75 if(alloc_subdevices(dev,4)<0)
80 s->type=COMEDI_SUBD_DIO;
81 s->subdev_flags=SDF_READABLE|SDF_WRITABLE;
84 s->range_table=&range_digital;
85 s->insn_config = mpc8260cpm_dio_config;
86 s->insn_bits = mpc8260cpm_dio_bits;
92 static int mpc8260cpm_detach(comedi_device *dev)
94 printk("comedi%d: mpc8260cpm: remove\n",dev->minor);
99 static unsigned long *cpm_pdat(int port)
103 return &io->iop_pdata;
105 return &io->iop_pdatb;
107 return &io->iop_pdatc;
109 return &io->iop_pdatd;
113 static int mpc8260cpm_dio_config(comedi_device *dev,comedi_subdevice *s,comedi_insn *insn,lsampl_t *data)
120 port = (int)s->private;
121 mask = 1<<CR_CHAN(insn->chanspec);
122 if(mask&cpm_reserved_bits[port]){
127 case INSN_CONFIG_DIO_OUTPUT:
130 case INSN_CONFIG_DIO_INPUT:
133 case INSN_CONFIG_DIO_QUERY:
134 data[1] = (s->io_bits & mask) ? COMEDI_OUTPUT : COMEDI_INPUT;
142 case 0: return &io->iop_pdira;
143 case 1: return &io->iop_pdirb;
144 case 2: return &io->iop_pdirc;
145 case 3: return &io->iop_pdird;
152 static int mpc8260cpm_dio_bits(comedi_device *dev,comedi_subdevice *s,comedi_insn *insn,lsampl_t *data)
157 p = cpm_pdat((int)s->private);