// SPDX-License-Identifier: GPL-2.0+ /* * adv_pci1724.c * Comedi driver for the Advantech PCI-1724U card. * * Author: Frank Mori Hess <[email protected]> * Copyright (C) 2013 GnuBIO Inc * * COMEDI - Linux Control and Measurement Device Interface * Copyright (C) 1997-8 David A. Schleef <[email protected]> */ /* * Driver: adv_pci1724 * Description: Advantech PCI-1724U * Devices: [Advantech] PCI-1724U (adv_pci1724) * Author: Frank Mori Hess <[email protected]> * Updated: 2013-02-09 * Status: works * * Configuration Options: not applicable, uses comedi PCI auto config * * Subdevice 0 is the analog output. * Subdevice 1 is the offset calibration for the analog output. * Subdevice 2 is the gain calibration for the analog output. * * The calibration offset and gains have quite a large effect on the * analog output, so it is possible to adjust the analog output to * have an output range significantly different from the board's * nominal output ranges. For a calibrated +/-10V range, the analog * output's offset will be set somewhere near mid-range (0x2000) and * its gain will be near maximum (0x3fff). * * There is really no difference between the board's documented 0-20mA * versus 4-20mA output ranges. To pick one or the other is simply a * matter of adjusting the offset and gain calibration until the board * outputs in the desired range. */ #include <linux/module.h> #include <linux/comedi/comedi_pci.h> /* * PCI bar 2 Register I/O map (dev->iobase) */ #define PCI1724_DAC_CTRL_REG … #define PCI1724_DAC_CTRL_GX(x) … #define PCI1724_DAC_CTRL_CX(x) … #define PCI1724_DAC_CTRL_MODE(x) … #define PCI1724_DAC_CTRL_MODE_GAIN … #define PCI1724_DAC_CTRL_MODE_OFFSET … #define PCI1724_DAC_CTRL_MODE_NORMAL … #define PCI1724_DAC_CTRL_MODE_MASK … #define PCI1724_DAC_CTRL_DATA(x) … #define PCI1724_SYNC_CTRL_REG … #define PCI1724_SYNC_CTRL_DACSTAT … #define PCI1724_SYNC_CTRL_SYN … #define PCI1724_EEPROM_CTRL_REG … #define PCI1724_SYNC_TRIG_REG … #define PCI1724_BOARD_ID_REG … #define PCI1724_BOARD_ID_MASK … static const struct comedi_lrange adv_pci1724_ao_ranges = …; static int adv_pci1724_dac_idle(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned long context) { … } static int adv_pci1724_insn_write(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { … } static int adv_pci1724_auto_attach(struct comedi_device *dev, unsigned long context_unused) { … } static struct comedi_driver adv_pci1724_driver = …; static int adv_pci1724_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) { … } static const struct pci_device_id adv_pci1724_pci_table[] = …; MODULE_DEVICE_TABLE(pci, adv_pci1724_pci_table); static struct pci_driver adv_pci1724_pci_driver = …; module_comedi_pci_driver(…); MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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