226 lines
6.5 KiB
C
226 lines
6.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* adv_pci1723.c
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* Comedi driver for the Advantech PCI-1723 card.
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*
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* COMEDI - Linux Control and Measurement Device Interface
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* Copyright (C) 2000 David A. Schleef <ds@schleef.org>
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*/
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/*
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* Driver: adv_pci1723
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* Description: Advantech PCI-1723
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* Author: yonggang <rsmgnu@gmail.com>, Ian Abbott <abbotti@mev.co.uk>
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* Devices: [Advantech] PCI-1723 (adv_pci1723)
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* Updated: Mon, 14 Apr 2008 15:12:56 +0100
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* Status: works
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*
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* Configuration Options: not applicable, uses comedi PCI auto config
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*
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* Subdevice 0 is 8-channel AO, 16-bit, range +/- 10 V.
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*
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* Subdevice 1 is 16-channel DIO. The channels are configurable as
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* input or output in 2 groups (0 to 7, 8 to 15). Configuring any
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* channel implicitly configures all channels in the same group.
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*
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* TODO:
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* 1. Add the two milliamp ranges to the AO subdevice (0 to 20 mA,
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* 4 to 20 mA).
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* 2. Read the initial ranges and values of the AO subdevice at
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* start-up instead of reinitializing them.
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* 3. Implement calibration.
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*/
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#include <linux/module.h>
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#include <linux/comedi/comedi_pci.h>
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/*
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* PCI Bar 2 I/O Register map (dev->iobase)
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*/
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#define PCI1723_AO_REG(x) (0x00 + ((x) * 2))
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#define PCI1723_BOARD_ID_REG 0x10
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#define PCI1723_BOARD_ID_MASK (0xf << 0)
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#define PCI1723_SYNC_CTRL_REG 0x12
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#define PCI1723_SYNC_CTRL(x) (((x) & 0x1) << 0)
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#define PCI1723_SYNC_CTRL_ASYNC PCI1723_SYNC_CTRL(0)
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#define PCI1723_SYNC_CTRL_SYNC PCI1723_SYNC_CTRL(1)
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#define PCI1723_CTRL_REG 0x14
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#define PCI1723_CTRL_BUSY BIT(15)
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#define PCI1723_CTRL_INIT BIT(14)
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#define PCI1723_CTRL_SELF BIT(8)
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#define PCI1723_CTRL_IDX(x) (((x) & 0x3) << 6)
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#define PCI1723_CTRL_RANGE(x) (((x) & 0x3) << 4)
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#define PCI1723_CTRL_SEL(x) (((x) & 0x1) << 3)
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#define PCI1723_CTRL_GAIN PCI1723_CTRL_SEL(0)
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#define PCI1723_CTRL_OFFSET PCI1723_CTRL_SEL(1)
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#define PCI1723_CTRL_CHAN(x) (((x) & 0x7) << 0)
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#define PCI1723_CALIB_CTRL_REG 0x16
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#define PCI1723_CALIB_CTRL_CS BIT(2)
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#define PCI1723_CALIB_CTRL_DAT BIT(1)
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#define PCI1723_CALIB_CTRL_CLK BIT(0)
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#define PCI1723_CALIB_STROBE_REG 0x18
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#define PCI1723_DIO_CTRL_REG 0x1a
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#define PCI1723_DIO_CTRL_HDIO BIT(1)
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#define PCI1723_DIO_CTRL_LDIO BIT(0)
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#define PCI1723_DIO_DATA_REG 0x1c
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#define PCI1723_CALIB_DATA_REG 0x1e
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#define PCI1723_SYNC_STROBE_REG 0x20
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#define PCI1723_RESET_AO_STROBE_REG 0x22
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#define PCI1723_RESET_CALIB_STROBE_REG 0x24
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#define PCI1723_RANGE_STROBE_REG 0x26
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#define PCI1723_VREF_REG 0x28
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#define PCI1723_VREF(x) (((x) & 0x3) << 0)
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#define PCI1723_VREF_NEG10V PCI1723_VREF(0)
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#define PCI1723_VREF_0V PCI1723_VREF(1)
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#define PCI1723_VREF_POS10V PCI1723_VREF(3)
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static int pci1723_ao_insn_write(struct comedi_device *dev,
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struct comedi_subdevice *s,
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struct comedi_insn *insn,
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unsigned int *data)
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{
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unsigned int chan = CR_CHAN(insn->chanspec);
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int i;
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for (i = 0; i < insn->n; i++) {
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unsigned int val = data[i];
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outw(val, dev->iobase + PCI1723_AO_REG(chan));
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s->readback[chan] = val;
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}
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return insn->n;
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}
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static int pci1723_dio_insn_config(struct comedi_device *dev,
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struct comedi_subdevice *s,
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struct comedi_insn *insn,
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unsigned int *data)
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{
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unsigned int chan = CR_CHAN(insn->chanspec);
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unsigned int mask = (chan < 8) ? 0x00ff : 0xff00;
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unsigned short mode = 0x0000; /* assume output */
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int ret;
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ret = comedi_dio_insn_config(dev, s, insn, data, mask);
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if (ret)
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return ret;
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if (!(s->io_bits & 0x00ff))
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mode |= PCI1723_DIO_CTRL_LDIO; /* low byte input */
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if (!(s->io_bits & 0xff00))
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mode |= PCI1723_DIO_CTRL_HDIO; /* high byte input */
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outw(mode, dev->iobase + PCI1723_DIO_CTRL_REG);
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return insn->n;
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}
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static int pci1723_dio_insn_bits(struct comedi_device *dev,
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struct comedi_subdevice *s,
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struct comedi_insn *insn,
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unsigned int *data)
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{
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if (comedi_dio_update_state(s, data))
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outw(s->state, dev->iobase + PCI1723_DIO_DATA_REG);
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data[1] = inw(dev->iobase + PCI1723_DIO_DATA_REG);
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return insn->n;
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}
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static int pci1723_auto_attach(struct comedi_device *dev,
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unsigned long context_unused)
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{
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struct pci_dev *pcidev = comedi_to_pci_dev(dev);
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struct comedi_subdevice *s;
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unsigned int val;
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int ret;
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int i;
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ret = comedi_pci_enable(dev);
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if (ret)
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return ret;
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dev->iobase = pci_resource_start(pcidev, 2);
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ret = comedi_alloc_subdevices(dev, 2);
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if (ret)
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return ret;
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s = &dev->subdevices[0];
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s->type = COMEDI_SUBD_AO;
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s->subdev_flags = SDF_WRITABLE | SDF_GROUND | SDF_COMMON;
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s->n_chan = 8;
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s->maxdata = 0xffff;
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s->range_table = &range_bipolar10;
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s->insn_write = pci1723_ao_insn_write;
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ret = comedi_alloc_subdev_readback(s);
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if (ret)
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return ret;
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/* synchronously reset all analog outputs to 0V, +/-10V range */
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outw(PCI1723_SYNC_CTRL_SYNC, dev->iobase + PCI1723_SYNC_CTRL_REG);
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for (i = 0; i < s->n_chan; i++) {
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outw(PCI1723_CTRL_RANGE(0) | PCI1723_CTRL_CHAN(i),
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PCI1723_CTRL_REG);
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outw(0, dev->iobase + PCI1723_RANGE_STROBE_REG);
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outw(0x8000, dev->iobase + PCI1723_AO_REG(i));
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s->readback[i] = 0x8000;
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}
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outw(0, dev->iobase + PCI1723_SYNC_STROBE_REG);
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/* disable syncronous control */
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outw(PCI1723_SYNC_CTRL_ASYNC, dev->iobase + PCI1723_SYNC_CTRL_REG);
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s = &dev->subdevices[1];
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s->type = COMEDI_SUBD_DIO;
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s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
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s->n_chan = 16;
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s->maxdata = 1;
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s->range_table = &range_digital;
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s->insn_config = pci1723_dio_insn_config;
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s->insn_bits = pci1723_dio_insn_bits;
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/* get initial DIO direction and state */
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val = inw(dev->iobase + PCI1723_DIO_CTRL_REG);
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if (!(val & PCI1723_DIO_CTRL_LDIO))
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s->io_bits |= 0x00ff; /* low byte output */
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if (!(val & PCI1723_DIO_CTRL_HDIO))
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s->io_bits |= 0xff00; /* high byte output */
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s->state = inw(dev->iobase + PCI1723_DIO_DATA_REG);
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return 0;
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}
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static struct comedi_driver adv_pci1723_driver = {
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.driver_name = "adv_pci1723",
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.module = THIS_MODULE,
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.auto_attach = pci1723_auto_attach,
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.detach = comedi_pci_detach,
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};
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static int adv_pci1723_pci_probe(struct pci_dev *dev,
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const struct pci_device_id *id)
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{
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return comedi_pci_auto_config(dev, &adv_pci1723_driver,
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id->driver_data);
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}
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static const struct pci_device_id adv_pci1723_pci_table[] = {
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{ PCI_DEVICE(PCI_VENDOR_ID_ADVANTECH, 0x1723) },
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{ 0 }
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};
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MODULE_DEVICE_TABLE(pci, adv_pci1723_pci_table);
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static struct pci_driver adv_pci1723_pci_driver = {
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.name = "adv_pci1723",
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.id_table = adv_pci1723_pci_table,
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.probe = adv_pci1723_pci_probe,
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.remove = comedi_pci_auto_unconfig,
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};
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module_comedi_pci_driver(adv_pci1723_driver, adv_pci1723_pci_driver);
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MODULE_AUTHOR("Comedi https://www.comedi.org");
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MODULE_DESCRIPTION("Advantech PCI-1723 Comedi driver");
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MODULE_LICENSE("GPL");
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