/*
- comedi/drivers/daqboard2000.c
- hardware driver for IOtech DAQboard/2000
-
- COMEDI - Linux Control and Measurement Device Interface
-
Copyright (C) 1999 Anders Blomdell <anders.blomdell@control.lth.se>
-
- 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.
+ * comedi/drivers/daqboard2000.c
+ * hardware driver for IOtech DAQboard/2000
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+
* Copyright (C) 1999 Anders Blomdell <anders.blomdell@control.lth.se>
+ *
+ * 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.
*/
/*
-Driver: daqboard2000
-Description: IOTech DAQBoard/2000
-Author: Anders Blomdell <anders.blomdell@control.lth.se>
-Status: works
-Updated: Mon, 14 Apr 2008 15:28:52 +0100
-Devices: [IOTech] DAQBoard/2000 (daqboard2000)
-
-Much of the functionality of this driver was determined from reading
-the source code for the Windows driver.
-
-The FPGA on the board requires fimware, which is available from
-http://www.comedi.org in the comedi_nonfree_firmware tarball.
-
-Configuration options: not applicable, uses PCI auto config
-*/
+ * Driver: daqboard2000
+ * Description: IOTech DAQBoard/2000
+
* Author: Anders Blomdell <anders.blomdell@control.lth.se>
+ * Status: works
+ * Updated: Mon, 14 Apr 2008 15:28:52 +0100
+ * Devices: [IOTech] DAQBoard/2000 (daqboard2000)
+ *
+ * Much of the functionality of this driver was determined from reading
+ * the source code for the Windows driver.
+ *
+ * The FPGA on the board requires fimware, which is available from
+ * http://www.comedi.org in the comedi_nonfree_firmware tarball.
+ *
+ * Configuration options: not applicable, uses PCI auto config
+ */
/*
- This card was obviously never intended to leave the Windows world,
- since it lacked all kind of hardware documentation (except for cable
- pinouts, plug and pray has something to catch up with yet).
-
- With some help from our swedish distributor, we got the Windows sourcecode
- for the card, and here are the findings so far.
-
- 1. A good document that describes the PCI interface chip is 9080db-106.pdf
- available from http://www.plxtech.com/products/io/pci9080
-
- 2. The initialization done so far is:
- a. program the FPGA (windows code sans a lot of error messages)
- b.
-
- 3. Analog out seems to work OK with DAC's disabled, if DAC's are enabled,
- you have to output values to all enabled DAC's until result appears, I
- guess that it has something to do with pacer clocks, but the source
- gives me no clues. I'll keep it simple so far.
-
- 4. Analog in.
- Each channel in the scanlist seems to be controlled by four
- control words:
-
- Word0:
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- ! | | | ! | | | ! | | | ! | | | !
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-
- Word1:
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- ! | | | ! | | | ! | | | ! | | | !
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | | | | | | |
- +------+------+ | | | | +-- Digital input (??)
- | | | | +---- 10 us settling time
- | | | +------ Suspend acquisition (last to scan)
- | | +-------- Simultaneous sample and hold
- | +---------- Signed data format
- +------------------------- Correction offset low
-
- Word2:
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- ! | | | ! | | | ! | | | ! | | | !
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | | | | | | | | | |
- +-----+ +--+--+ +++ +++ +--+--+
- | | | | +----- Expansion channel
- | | | +----------- Expansion gain
- | | +--------------- Channel (low)
- | +--------------------- Correction offset high
- +----------------------------- Correction gain low
- Word3:
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- ! | | | ! | | | ! | | | ! | | | !
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | | | | | | | | |
- +------+------+ | | +-+-+ | | +-- Low bank enable
- | | | | | +---- High bank enable
- | | | | +------ Hi/low select
- | | | +---------- Gain (1,?,2,4,8,16,32,64)
- | | +-------------- differential/single ended
- | +---------------- Unipolar
- +------------------------- Correction gain high
-
- 999. The card seems to have an incredible amount of capabilities, but
- trying to reverse engineer them from the Windows source is beyond my
- patience.
-
+ * This card was obviously never intended to leave the Windows world,
+ * since it lacked all kind of hardware documentation (except for cable
+ * pinouts, plug and pray has something to catch up with yet).
+ *
+ * With some help from our swedish distributor, we got the Windows sourcecode
+ * for the card, and here are the findings so far.
+ *
+ * 1. A good document that describes the PCI interface chip is 9080db-106.pdf
+ * available from http://www.plxtech.com/products/io/pci9080
+ *
+ * 2. The initialization done so far is:
+ * a. program the FPGA (windows code sans a lot of error messages)
+ * b.
+ *
+ * 3. Analog out seems to work OK with DAC's disabled, if DAC's are enabled,
+ * you have to output values to all enabled DAC's until result appears, I
+ * guess that it has something to do with pacer clocks, but the source
+ * gives me no clues. I'll keep it simple so far.
+ *
+ * 4. Analog in.
+ * Each channel in the scanlist seems to be controlled by four
+ * control words:
+ *
+ * Word0:
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * ! | | | ! | | | ! | | | ! | | | !
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *
+ * Word1:
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * ! | | | ! | | | ! | | | ! | | | !
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | | | | | | |
+ * +------+------+ | | | | +-- Digital input (??)
+ * | | | | +---- 10 us settling time
+ * | | | +------ Suspend acquisition (last to scan)
+ * | | +-------- Simultaneous sample and hold
+ * | +---------- Signed data format
+ * +------------------------- Correction offset low
+ *
+ * Word2:
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * ! | | | ! | | | ! | | | ! | | | !
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | | | | | | | | | |
+ * +-----+ +--+--+ +++ +++ +--+--+
+ * | | | | +----- Expansion channel
+ * | | | +----------- Expansion gain
+ * | | +--------------- Channel (low)
+ * | +--------------------- Correction offset high
+ * +----------------------------- Correction gain low
+ * Word3:
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * ! | | | ! | | | ! | | | ! | | | !
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | | | | | | | | |
+ * +------+------+ | | +-+-+ | | +-- Low bank enable
+ * | | | | | +---- High bank enable
+ * | | | | +------ Hi/low select
+ * | | | +---------- Gain (1,?,2,4,8,16,32,64)
+ * | | +-------------- differential/single ended
+ * | +---------------- Unipolar
+ * +------------------------- Correction gain high
+ *
+ * 999. The card seems to have an incredible amount of capabilities, but
+ * trying to reverse engineer them from the Windows source is beyond my
+ * patience.
+ *
*/
#include <linux/module.h>
return result;
s = &dev->subdevices[2];
- result = subdev_8255_init(dev, s, daqboard2000_8255_cb,
- dioP2ExpansionIO8Bit);
- if (result)
- return result;
-
- return 0;
+ return subdev_8255_init(dev, s, daqboard2000_8255_cb,
+ dioP2ExpansionIO8Bit);
}
static void daqboard2000_detach(struct comedi_device *dev)
Code Review / kvmfornfv.git / blobdiff