/*
comedi/drivers/cb_pcimdda.c
-
Computer Boards PCIM-DDA06-16 Comedi driver
-
Author: Calin Culianu <calin@ajvar.org>
-
- This is a driver for the Computer Boards PCIM-DDA06-16 Analog Output
- card. This board has a unique register layout and as such probably
- deserves its own driver file.
-
- It is theoretically possible to integrate this board into the cb_pcidda
- file, but since that isn't my code, I didn't want to significantly
- modify that file to support this board (I thought it impolite to do so).
-
- At any rate, if you feel ambitious, please feel free to take
- the code out of this file and combine it with a more unified driver
- file.
-
- I would like to thank Timothy Curry <Timothy.Curry@rdec.redstone.army.mil>
- for lending me a board so that I could write this driver.
-
- -Calin Culianu <calin@ajvar.org>
COMEDI - Linux Control and Measurement Device Interface
Copyright (C) 2000 David A. Schleef <ds@schleef.org>
Configuration Options:
- Just tell comedi_config that you want to use the cb_pcimdda driver as so:
-
- comedi_config /dev/comedi0 cb_pcimdda
+ [0] PCI bus (optional) (unimplemented)
+ [1] PCI slot (optional) (unimplemented)
+ [2] analog output range jumper setting
+ 0 == +/- 5 V
+ 1 == +/- 10 V
*/
/*
- * The previous block comment is used to automatically generate
- * documentation in Comedi and Comedilib. The fields:
- *
- * Driver: the name of the driver
- * Description: a short phrase describing the driver. Don't list boards.
- * Devices: a full list of the boards that attempt to be supported by
- * the driver. Format is "(manufacturer) board name [comedi name]",
- * where comedi_name is the name that is used to configure the board.
- * See the comment near board_name: in the comedi_driver structure
- * below. If (manufacturer) or [comedi name] is missing, the previous
- * value is used.
- * Author: you
- * Updated: date when the _documentation_ was last updated. Use 'date -R'
- * to get a value for this.
- * Status: a one-word description of the status. Valid values are:
- * works - driver works correctly on most boards supported, and
- * passes comedi_test.
- * unknown - unknown. Usually put there by ds.
- * experimental - may not work in any particular release. Author
- * probably wants assistance testing it.
- * bitrotten - driver has not been update in a long time, probably
- * doesn't work, and probably is missing support for significant
- * Comedi interface features.
- * untested - author probably wrote it "blind", and is believed to
- * work, but no confirmation.
- *
- * These headers should be followed by a blank line, and any comments
- * you wish to say about the driver. The comment area is the place
- * to put any known bugs, limitations, unsupported features, supported
- * command triggers, whether or not commands are supported on particular
- * subdevices, etc.
- *
- * Somewhere in the comment should be information about configuration
- * options that are used with comedi_config.
+ This is a driver for the Computer Boards PCIM-DDA06-16 Analog Output
+ card. This board has a unique register layout and as such probably
+ deserves its own driver file.
+
+ It is theoretically possible to integrate this board into the cb_pcidda
+ file, but since that isn't my code, I didn't want to significantly
+ modify that file to support this board (I thought it impolite to do so).
+
+ At any rate, if you feel ambitious, please feel free to take
+ the code out of this file and combine it with a more unified driver
+ file.
+
+ I would like to thank Timothy Curry <Timothy.Curry@rdec.redstone.army.mil>
+ for lending me a board so that I could write this driver.
+
+ -Calin Culianu <calin@ajvar.org>
*/
#include <linux/kernel.h>
unsigned short device_id;
int ao_chans;
int ao_bits;
- int ai_chans;
- int ai_bits;
int dio_chans;
int dio_method;
int dio_offset; /* how many bytes into the BADR are the DIO ports */
int regs_badrindex; /* IO Region for the control, analog output,
and DIO registers */
int reg_sz; /* number of bytes of registers in io region */
- comedi_lrange *ai_range_table;
- comedi_lrange *ao_range_table;
} board;
enum DIO_METHODS {
device_id: PCI_ID_PCIM_DDA06_16,
ao_chans: 6,
ao_bits: 16,
- ai_chans: 0, /* No AI on this board */
- ai_bits: 0,
dio_chans: 24,
dio_method: DIO_8255,
dio_offset: 12,
regs_badrindex: 3,
reg_sz: 16,
- ai_range_table: &range_bipolar5, // dummy, since we have no AI
- /* this board only has one, jumper setable range, +/-5V
- you can also set it to +/-10V via jumper, but we will
- assume it is at the factory default, since it is beyond
- documented possibility to detect the state of this jumper through
- software or to override it through software. (However, it's
- possible that the Measurement Computing documentation
- is flawed or incomplete.. if you want to experiment by writing
- to random places in this device's IO regions and seeing if it
- changes the ranges settings on the board, please go ahead
- and do so... ). */
- ao_range_table: &range_bipolar5
}
};
module: THIS_MODULE,
attach: attach,
detach: detach,
- /* It is not necessary to implement the following members if you are
- * writing a driver for a ISA PnP or PCI card */
- /* Most drivers will support multiple types of boards by
- * having an array of board structures. These were defined
- * in boards[] above. Note that the element 'name'
- * was first in the structure -- Comedi uses this fact to
- * extract the name of the board without knowing any details
- * about the structure except for its length.
- * When a device is attached (by comedi_config), the name
- * of the device is given to Comedi, and Comedi tries to
- * match it by going through the list of board names. If
- * there is a match, the address of the pointer is put
- * into dev->board_ptr and driver->attach() is called.
- *
- * Note that these are not necessary if you can determine
- * the type of board in software. ISA PnP, PCI, and PCMCIA
- * devices are such boards.
- */
- // board_name: boards,
- //offset: sizeof(board),
- //num_names: N_BOARDS
};
+MODULE_AUTHOR("Calin A. Culianu <calin@rtlab.org>");
+MODULE_DESCRIPTION("Comedi low-level driver for the Computerboards PCIM-DDA "
+ "series. Currently only supports PCIM-DDA06-16 (which "
+ "also happens to be the only board in this series. :) ) ");
+MODULE_LICENSE("GPL");
+COMEDI_INITCLEANUP_NOMODULE(cb_pcimdda_driver);
static int ao_winsn(comedi_device *dev, comedi_subdevice *s,
comedi_insn *insn,lsampl_t *data);
static int ao_rinsn(comedi_device *dev, comedi_subdevice *s,
comedi_insn *insn,lsampl_t *data);
-/* stub... */
-static int ai_rinsn(comedi_device *dev, comedi_subdevice *s, comedi_insn *insn,
- lsampl_t *data);
/*---------------------------------------------------------------------------
* convenient macro defined in comedidev.h. It relies on
* n_subdevices being set correctly.
*/
- dev->n_subdevices=3;
+ dev->n_subdevices=2;
if(alloc_subdevices(dev)<0)
return -ENOMEM;
s = dev->subdevices+0;
- if (thisboard->ai_chans > 0) {
-
- /* analog input subdevice */
- s->type=COMEDI_SUBD_AI;
- s->subdev_flags = SDF_READABLE;
- s->n_chan = thisboard->ai_chans;
- s->maxdata = figure_out_maxdata(thisboard->ai_bits);
- s->range_table = &range_bipolar5;
- s->insn_read = &ai_rinsn;
-
- } else {
- /* no AI on this board! */
- s->type = COMEDI_SUBD_UNUSED;
+ /* analog output subdevice */
+ s->type = COMEDI_SUBD_AO;
+ s->subdev_flags = SDF_WRITABLE | SDF_READABLE;
+ s->n_chan = thisboard->ao_chans;
+ s->maxdata = figure_out_maxdata(thisboard->ao_bits);
+ /* this is hard-coded here */
+ if(dev->options[2]){
+ s->range_table = &range_bipolar10;
+ }else{
+ s->range_table = &range_bipolar5;
}
+ s->insn_write = &ao_winsn;
+ s->insn_read = &ao_rinsn;
s = dev->subdevices+1;
-
- if (thisboard->ao_chans > 0) {
-
- /* analog output subdevice */
- s->type = COMEDI_SUBD_AO;
- s->subdev_flags = SDF_WRITABLE | SDF_READABLE;
- s->n_chan = thisboard->ao_chans;
- s->maxdata = figure_out_maxdata(thisboard->ao_bits);
- /* this is hard-coded here */
- s->range_table = thisboard->ao_range_table;
- s->insn_write = &ao_winsn;
- s->insn_read = &ao_rinsn;
-
- } else {
- /* no AO on this board! */
- s->type = COMEDI_SUBD_UNUSED;
- }
-
- s = dev->subdevices+2;
/* digital i/o subdevice */
if(thisboard->dio_chans) {
switch(thisboard->dio_method) {
return i;
}
-/* stub... */
-static int ai_rinsn(comedi_device *dev, comedi_subdevice *s, comedi_insn *insn,
- lsampl_t *data)
-{
- /* do nothing.. */
- (void) dev; (void) s; (void) insn; (void) data;
- return 0;
-}
/*---------------------------------------------------------------------------
HELPER FUNCTION DEFINITIONS
}
-/*----------------------------------------------------------------------------
- LINUX KERNEL MODULE STUFF...
------------------------------------------------------------------------------*/
-MODULE_AUTHOR("Calin A. Culianu <calin@rtlab.org>");
-MODULE_DESCRIPTION("Comedi low-level driver for the Computerboards PCIM-DDA "
- "series. Currently only supports PCIM-DDA06-16 (which "
- "also happens to be the only board in this series. :) ) ");
-MODULE_LICENSE("GPL");
-
-/* Entry point into this module.. */
-int init_module(void)
-{
- return comedi_driver_register(&cb_pcimdda_driver);
-}
-
-/* Module Exit/cleanup.. */
-void cleanup_module(void)
-{
- comedi_driver_unregister(&cb_pcimdda_driver);
-}
-
projects / comedi.git / commitdiff