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// SPDX-License-Identifier: GPL-2.0+
/*
* 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>
*/
/*
* Driver: adl_pci6208
* Description: ADLink PCI-6208/6216 Series Multi-channel Analog Output Cards
* Devices: [ADLink] PCI-6208 (adl_pci6208), PCI-6216
* Author: nsyeow <nsyeow@pd.jaring.my>
* Updated: Wed, 11 Feb 2015 11:37:18 +0000
* Status: untested
*
* Configuration Options: not applicable, uses PCI auto config
*
* All supported devices share the same PCI device ID and are treated as a
* PCI-6216 with 16 analog output channels. On a PCI-6208, the upper 8
* channels exist in registers, but don't go to DAC chips.
*/
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/comedi/comedi_pci.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 BIT(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)
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);
int ret;
int i;
for (i = 0; i < insn->n; i++) {
unsigned int 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_unused)
{
struct pci_dev *pcidev = comedi_to_pci_dev(dev);
struct comedi_subdevice *s;
unsigned int val;
int ret;
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 = 16; /* Only 8 usable on PCI-6208 */
s->maxdata = 0xffff;
s->range_table = &range_bipolar10;
s->insn_write = pci6208_ao_insn_write;
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_DEVICE(PCI_VENDOR_ID_ADLINK, 0x6208) },
{ PCI_DEVICE_SUB(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
0x9999, 0x6208) },
{ 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 https://www.comedi.org");
MODULE_DESCRIPTION("Comedi driver for ADLink 6208 series cards");
MODULE_LICENSE("GPL");
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