diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/cb_pcimdda.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/cb_pcimdda.c | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/drivers/staging/comedi/drivers/cb_pcimdda.c b/drivers/staging/comedi/drivers/cb_pcimdda.c deleted file mode 100644 index 21fc7b3c5f60..000000000000 --- a/drivers/staging/comedi/drivers/cb_pcimdda.c +++ /dev/null @@ -1,192 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * comedi/drivers/cb_pcimdda.c - * Computer Boards PCIM-DDA06-16 Comedi driver - * Author: Calin Culianu <calin@ajvar.org> - * - * COMEDI - Linux Control and Measurement Device Interface - * Copyright (C) 2000 David A. Schleef <ds@schleef.org> - */ -/* - * Driver: cb_pcimdda - * Description: Measurement Computing PCIM-DDA06-16 - * Devices: [Measurement Computing] PCIM-DDA06-16 (cb_pcimdda) - * Author: Calin Culianu <calin@ajvar.org> - * Updated: Mon, 14 Apr 2008 15:15:51 +0100 - * Status: works - * - * All features of the PCIM-DDA06-16 board are supported. - * This board has 6 16-bit AO channels, and the usual 8255 DIO setup. - * (24 channels, configurable in banks of 8 and 4, etc.). - * This board does not support commands. - * - * The board has a peculiar way of specifying AO gain/range settings -- You have - * 1 jumper bank on the card, which either makes all 6 AO channels either - * 5 Volt unipolar, 5V bipolar, 10 Volt unipolar or 10V bipolar. - * - * Since there is absolutely _no_ way to tell in software how this jumper is set - * (well, at least according to the rather thin spec. from Measurement Computing - * that comes with the board), the driver assumes the jumper is at its factory - * default setting of +/-5V. - * - * Also of note is the fact that this board features another jumper, whose - * state is also completely invisible to software. It toggles two possible AO - * output modes on the board: - * - * - Update Mode: Writing to an AO channel instantaneously updates the actual - * signal output by the DAC on the board (this is the factory default). - * - Simultaneous XFER Mode: Writing to an AO channel has no effect until - * you read from any one of the AO channels. This is useful for loading - * all 6 AO values, and then reading from any one of the AO channels on the - * device to instantly update all 6 AO values in unison. Useful for some - * control apps, I would assume? If your jumper is in this setting, then you - * need to issue your comedi_data_write()s to load all the values you want, - * then issue one comedi_data_read() on any channel on the AO subdevice - * to initiate the simultaneous XFER. - * - * Configuration Options: not applicable, uses PCI auto 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/module.h> - -#include "../comedi_pci.h" - -#include "8255.h" - -/* device ids of the cards we support -- currently only 1 card supported */ -#define PCI_ID_PCIM_DDA06_16 0x0053 - -/* - * Register map, 8-bit access only - */ -#define PCIMDDA_DA_CHAN(x) (0x00 + (x) * 2) -#define PCIMDDA_8255_BASE_REG 0x0c - -static int cb_pcimdda_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 long offset = dev->iobase + PCIMDDA_DA_CHAN(chan); - unsigned int val = s->readback[chan]; - int i; - - for (i = 0; i < insn->n; i++) { - val = data[i]; - - /* - * Write the LSB then MSB. - * - * If the simultaneous xfer mode is selected by the - * jumper on the card, a read instruction is needed - * in order to initiate the simultaneous transfer. - * Otherwise, the DAC will be updated when the MSB - * is written. - */ - outb(val & 0x00ff, offset); - outb((val >> 8) & 0x00ff, offset + 1); - } - s->readback[chan] = val; - - return insn->n; -} - -static int cb_pcimdda_ao_insn_read(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, - unsigned int *data) -{ - unsigned int chan = CR_CHAN(insn->chanspec); - - /* Initiate the simultaneous transfer */ - inw(dev->iobase + PCIMDDA_DA_CHAN(chan)); - - return comedi_readback_insn_read(dev, s, insn, data); -} - -static int cb_pcimdda_auto_attach(struct comedi_device *dev, - unsigned long context_unused) -{ - struct pci_dev *pcidev = comedi_to_pci_dev(dev); - struct comedi_subdevice *s; - int ret; - - ret = comedi_pci_enable(dev); - if (ret) - return ret; - dev->iobase = pci_resource_start(pcidev, 3); - - ret = comedi_alloc_subdevices(dev, 2); - if (ret) - return ret; - - s = &dev->subdevices[0]; - /* analog output subdevice */ - s->type = COMEDI_SUBD_AO; - s->subdev_flags = SDF_WRITABLE | SDF_READABLE; - s->n_chan = 6; - s->maxdata = 0xffff; - s->range_table = &range_bipolar5; - s->insn_write = cb_pcimdda_ao_insn_write; - s->insn_read = cb_pcimdda_ao_insn_read; - - ret = comedi_alloc_subdev_readback(s); - if (ret) - return ret; - - s = &dev->subdevices[1]; - /* digital i/o subdevice */ - return subdev_8255_init(dev, s, NULL, PCIMDDA_8255_BASE_REG); -} - -static struct comedi_driver cb_pcimdda_driver = { - .driver_name = "cb_pcimdda", - .module = THIS_MODULE, - .auto_attach = cb_pcimdda_auto_attach, - .detach = comedi_pci_detach, -}; - -static int cb_pcimdda_pci_probe(struct pci_dev *dev, - const struct pci_device_id *id) -{ - return comedi_pci_auto_config(dev, &cb_pcimdda_driver, - id->driver_data); -} - -static const struct pci_device_id cb_pcimdda_pci_table[] = { - { PCI_DEVICE(PCI_VENDOR_ID_CB, PCI_ID_PCIM_DDA06_16) }, - { 0 } -}; -MODULE_DEVICE_TABLE(pci, cb_pcimdda_pci_table); - -static struct pci_driver cb_pcimdda_driver_pci_driver = { - .name = "cb_pcimdda", - .id_table = cb_pcimdda_pci_table, - .probe = cb_pcimdda_pci_probe, - .remove = comedi_pci_auto_unconfig, -}; -module_comedi_pci_driver(cb_pcimdda_driver, cb_pcimdda_driver_pci_driver); - -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"); |