/*
Driver: cb_pcidio.o
Description: ComputerBoards' DIO boards with PCI interface
-Devices: [ComputerBoards (currently MeasurementComputing)]
+Devices: [Measurement Computing]
PCI-DIO24H, PCI-DIO48H
Author: Yoshiya Matsuzaka
Updated: Wed, 25 Jul 2007 15:15:41 +0900
none
*/
-/*
- * 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.
- */
-
-
-
/*------------------------------ HEADER FILES ---------------------------------*/
#include <linux/comedidev.h>
#include <linux/pci.h> /* for PCI devices */
-
+#include "8255.h"
/*-------------------------- MACROS and DATATYPES -----------------------------*/
char *name; // anme of the board
int n_8255; // number of 8255 chips on board
- // indices of base address regions
+ // indices of base address regions
int pcicontroler_badrindex;
int dioregs_badrindex;
} pcidio_board;
{
name: "pci-dio24h",
n_8255: 1,
- pcicontroler_badrindex: 1,
+ pcicontroler_badrindex: 1,
dioregs_badrindex: 2,
},
{
/* used for DO readback, curently unused */
lsampl_t do_readback[4]; /* up to 4 lsampl_t suffice to hold 96 bits for PCI-DIO96 */
-
+
unsigned long dio_reg_base; // address of port A of the first 8255 chip on board
} pcidio_private;
/*------------------------------- FUNCTIONS -----------------------------------*/
-// The 2 functions below are currently unsed
-static int pcidio_dio_insn_bits(comedi_device *dev,comedi_subdevice *s,
- comedi_insn *insn,lsampl_t *data);
-static int pcidio_dio_insn_config(comedi_device *dev,comedi_subdevice *s,
- comedi_insn *insn,lsampl_t *data);
-
-
-
/*
* Attach is called by the Comedi core to configure the driver
* for a particular board. If you specified a board_name array
*/
static int pcidio_attach(comedi_device *dev, comedi_devconfig *it)
{
-struct pci_dev* pcidev = NULL;
-int index;
+ struct pci_dev* pcidev = NULL;
+ int index;
+ int i;
printk("comedi%d: pcidio: \n", dev->minor);
/*
devpriv->pci_dev = pcidev;
printk("Found %s on bus %i, slot %i\n", pcidio_boards[index].name,
devpriv->pci_dev->bus->number, PCI_SLOT(devpriv->pci_dev->devfn));
- devpriv->dio_reg_base
+ devpriv->dio_reg_base
= pci_resource_start(devpriv->pci_dev, pcidio_boards[index].dioregs_badrindex);
/*
*/
if(alloc_subdevices(dev, thisboard->n_8255) < 0)
return -ENOMEM;
-
- int i;
+
for(i = 0; i < thisboard->n_8255; i++)
{
subdev_8255_init(dev, dev->subdevices + i,
return 1;
}
-
-
/*
* _detach is called to deconfigure a device. It should deallocate
- * resources.
+ * resources.
* This function is also called when _attach() fails, so it should be
* careful not to release resources that were not necessarily
* allocated by _attach(). dev->private and dev->subdevices are
return 0;
}
-
-
-/* DIO devices are slightly special. Although it is possible to
- * implement the insn_read/insn_write interface, it is much more
- * useful to applications if you implement the insn_bits interface.
- * This allows packed reading/writing of the DIO channels. The
- * comedi core can convert between insn_bits and insn_read/write */
-static int pcidio_dio_insn_bits(comedi_device *dev,comedi_subdevice *s,
- comedi_insn *insn,lsampl_t *data)
-{
- if(insn->n!=2)return -EINVAL;
-
- /* The insn data is a mask in data[0] and the new data
- * in data[1], each channel cooresponding to a bit. */
- if(data[0]){
- s->state &= ~data[0];
- s->state |= data[0]&data[1];
- /* Write out the new digital output lines */
- //outw(s->state,dev->iobase + SKEL_DIO);
- }
-
- /* on return, data[1] contains the value of the digital
- * input and output lines. */
- //data[1]=inw(dev->iobase + SKEL_DIO);
- /* or we could just return the software copy of the output values if
- * it was a purely digital output subdevice */
- //data[1]=s->state;
-
- return 2;
-}
-
-static int pcidio_dio_insn_config(comedi_device *dev,comedi_subdevice *s,
- comedi_insn *insn,lsampl_t *data)
-{
- int chan=CR_CHAN(insn->chanspec);
-
- /* The input or output configuration of each digital line is
- * configured by a special insn_config instruction. chanspec
- * contains the channel to be changed, and data[0] contains the
- * value COMEDI_INPUT or COMEDI_OUTPUT. */
- switch(data[0])
- {
- case INSN_CONFIG_DIO_OUTPUT:
- s->io_bits |= 1<<chan;
- break;
- case INSN_CONFIG_DIO_INPUT:
- s->io_bits &= ~(1<<chan);
- break;
- case INSN_CONFIG_DIO_QUERY:
- data[1] = (s->io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT;
- return insn->n;
- break;
- default:
- return -EINVAL;
- break;
- }
- //outw(s->io_bits,dev->iobase + SKEL_DIO_CONFIG);
-
- return insn->n;
-}
-
/*
* A convenient macro that defines init_module() and cleanup_module(),
* as necessary.
projects / comedi.git / commitdiff