aac307f9dd
Introduce a generic (*detach) function for comedi PCI drivers to handle the boilerplate code needed to detach a PCI driver. This function works similar to comedi_legacy_detach() where it will: * free the dev->irq if it has been requested * iounmap the dev->mmio addres if it has been ioremap'ed The helper then calls comedi_pci_disable() to release the regions and disable the PCI device. Use the new helper directly for the (*detach) in the following cases: * where comedi_pci_disable() is used directly for the (*detach) * where the detach function is just boilerplate Use the new helper in the (*detach) of the simpler PCI drivers. Call the helper after disabling interrupts (reset) and before any additional cleanup (kfree) to avoid any race conditions with the interrupt handler. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
239 lines
5.8 KiB
C
239 lines
5.8 KiB
C
/*
|
|
* adl_pci6208.c
|
|
* Comedi driver for ADLink 6208 series cards
|
|
*
|
|
* COMEDI - Linux Control and Measurement Device Interface
|
|
* Copyright (C) 2000 David A. Schleef <ds@schleef.org>
|
|
*
|
|
* 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: adl_pci6208
|
|
* Description: ADLink PCI-6208/6216 Series Multi-channel Analog Output Cards
|
|
* Devices: (ADLink) PCI-6208 [adl_pci6208]
|
|
* (ADLink) PCI-6216 [adl_pci6216]
|
|
* Author: nsyeow <nsyeow@pd.jaring.my>
|
|
* Updated: Fri, 30 Jan 2004 14:44:27 +0800
|
|
* Status: untested
|
|
*
|
|
* Configuration Options: not applicable, uses PCI auto config
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/pci.h>
|
|
|
|
#include "../comedidev.h"
|
|
|
|
/*
|
|
* PCI-6208/6216-GL register map
|
|
*/
|
|
#define PCI6208_AO_CONTROL(x) (0x00 + (2 * (x)))
|
|
#define PCI6208_AO_STATUS 0x00
|
|
#define PCI6208_AO_STATUS_DATA_SEND (1 << 0)
|
|
#define PCI6208_DIO 0x40
|
|
#define PCI6208_DIO_DO_MASK (0x0f)
|
|
#define PCI6208_DIO_DO_SHIFT (0)
|
|
#define PCI6208_DIO_DI_MASK (0xf0)
|
|
#define PCI6208_DIO_DI_SHIFT (4)
|
|
|
|
enum pci6208_boardid {
|
|
BOARD_PCI6208,
|
|
BOARD_PCI6216,
|
|
};
|
|
|
|
struct pci6208_board {
|
|
const char *name;
|
|
int ao_chans;
|
|
};
|
|
|
|
static const struct pci6208_board pci6208_boards[] = {
|
|
[BOARD_PCI6208] = {
|
|
.name = "adl_pci6208",
|
|
.ao_chans = 8,
|
|
},
|
|
[BOARD_PCI6216] = {
|
|
.name = "adl_pci6216",
|
|
.ao_chans = 16,
|
|
},
|
|
};
|
|
|
|
static int pci6208_ao_eoc(struct comedi_device *dev,
|
|
struct comedi_subdevice *s,
|
|
struct comedi_insn *insn,
|
|
unsigned long context)
|
|
{
|
|
unsigned int status;
|
|
|
|
status = inw(dev->iobase + PCI6208_AO_STATUS);
|
|
if ((status & PCI6208_AO_STATUS_DATA_SEND) == 0)
|
|
return 0;
|
|
return -EBUSY;
|
|
}
|
|
|
|
static int pci6208_ao_insn_write(struct comedi_device *dev,
|
|
struct comedi_subdevice *s,
|
|
struct comedi_insn *insn,
|
|
unsigned int *data)
|
|
{
|
|
unsigned int chan = CR_CHAN(insn->chanspec);
|
|
unsigned int val = s->readback[chan];
|
|
int ret;
|
|
int i;
|
|
|
|
for (i = 0; i < insn->n; i++) {
|
|
val = data[i];
|
|
|
|
/* D/A transfer rate is 2.2us */
|
|
ret = comedi_timeout(dev, s, insn, pci6208_ao_eoc, 0);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* the hardware expects two's complement values */
|
|
outw(comedi_offset_munge(s, val),
|
|
dev->iobase + PCI6208_AO_CONTROL(chan));
|
|
|
|
s->readback[chan] = val;
|
|
}
|
|
|
|
return insn->n;
|
|
}
|
|
|
|
static int pci6208_di_insn_bits(struct comedi_device *dev,
|
|
struct comedi_subdevice *s,
|
|
struct comedi_insn *insn,
|
|
unsigned int *data)
|
|
{
|
|
unsigned int val;
|
|
|
|
val = inw(dev->iobase + PCI6208_DIO);
|
|
val = (val & PCI6208_DIO_DI_MASK) >> PCI6208_DIO_DI_SHIFT;
|
|
|
|
data[1] = val;
|
|
|
|
return insn->n;
|
|
}
|
|
|
|
static int pci6208_do_insn_bits(struct comedi_device *dev,
|
|
struct comedi_subdevice *s,
|
|
struct comedi_insn *insn,
|
|
unsigned int *data)
|
|
{
|
|
if (comedi_dio_update_state(s, data))
|
|
outw(s->state, dev->iobase + PCI6208_DIO);
|
|
|
|
data[1] = s->state;
|
|
|
|
return insn->n;
|
|
}
|
|
|
|
static int pci6208_auto_attach(struct comedi_device *dev,
|
|
unsigned long context)
|
|
{
|
|
struct pci_dev *pcidev = comedi_to_pci_dev(dev);
|
|
const struct pci6208_board *boardinfo = NULL;
|
|
struct comedi_subdevice *s;
|
|
unsigned int val;
|
|
int ret;
|
|
|
|
if (context < ARRAY_SIZE(pci6208_boards))
|
|
boardinfo = &pci6208_boards[context];
|
|
if (!boardinfo)
|
|
return -ENODEV;
|
|
dev->board_ptr = boardinfo;
|
|
dev->board_name = boardinfo->name;
|
|
|
|
ret = comedi_pci_enable(dev);
|
|
if (ret)
|
|
return ret;
|
|
dev->iobase = pci_resource_start(pcidev, 2);
|
|
|
|
ret = comedi_alloc_subdevices(dev, 3);
|
|
if (ret)
|
|
return ret;
|
|
|
|
s = &dev->subdevices[0];
|
|
/* analog output subdevice */
|
|
s->type = COMEDI_SUBD_AO;
|
|
s->subdev_flags = SDF_WRITABLE;
|
|
s->n_chan = boardinfo->ao_chans;
|
|
s->maxdata = 0xffff;
|
|
s->range_table = &range_bipolar10;
|
|
s->insn_write = pci6208_ao_insn_write;
|
|
s->insn_read = comedi_readback_insn_read;
|
|
|
|
ret = comedi_alloc_subdev_readback(s);
|
|
if (ret)
|
|
return ret;
|
|
|
|
s = &dev->subdevices[1];
|
|
/* digital input subdevice */
|
|
s->type = COMEDI_SUBD_DI;
|
|
s->subdev_flags = SDF_READABLE;
|
|
s->n_chan = 4;
|
|
s->maxdata = 1;
|
|
s->range_table = &range_digital;
|
|
s->insn_bits = pci6208_di_insn_bits;
|
|
|
|
s = &dev->subdevices[2];
|
|
/* digital output subdevice */
|
|
s->type = COMEDI_SUBD_DO;
|
|
s->subdev_flags = SDF_WRITABLE;
|
|
s->n_chan = 4;
|
|
s->maxdata = 1;
|
|
s->range_table = &range_digital;
|
|
s->insn_bits = pci6208_do_insn_bits;
|
|
|
|
/*
|
|
* Get the read back signals from the digital outputs
|
|
* and save it as the initial state for the subdevice.
|
|
*/
|
|
val = inw(dev->iobase + PCI6208_DIO);
|
|
val = (val & PCI6208_DIO_DO_MASK) >> PCI6208_DIO_DO_SHIFT;
|
|
s->state = val;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct comedi_driver adl_pci6208_driver = {
|
|
.driver_name = "adl_pci6208",
|
|
.module = THIS_MODULE,
|
|
.auto_attach = pci6208_auto_attach,
|
|
.detach = comedi_pci_detach,
|
|
};
|
|
|
|
static int adl_pci6208_pci_probe(struct pci_dev *dev,
|
|
const struct pci_device_id *id)
|
|
{
|
|
return comedi_pci_auto_config(dev, &adl_pci6208_driver,
|
|
id->driver_data);
|
|
}
|
|
|
|
static const struct pci_device_id adl_pci6208_pci_table[] = {
|
|
{ PCI_VDEVICE(ADLINK, 0x6208), BOARD_PCI6208 },
|
|
{ PCI_VDEVICE(ADLINK, 0x6216), BOARD_PCI6216 },
|
|
{ 0 }
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, adl_pci6208_pci_table);
|
|
|
|
static struct pci_driver adl_pci6208_pci_driver = {
|
|
.name = "adl_pci6208",
|
|
.id_table = adl_pci6208_pci_table,
|
|
.probe = adl_pci6208_pci_probe,
|
|
.remove = comedi_pci_auto_unconfig,
|
|
};
|
|
module_comedi_pci_driver(adl_pci6208_driver, adl_pci6208_pci_driver);
|
|
|
|
MODULE_AUTHOR("Comedi http://www.comedi.org");
|
|
MODULE_DESCRIPTION("Comedi driver for ADLink 6208 series cards");
|
|
MODULE_LICENSE("GPL");
|