--- /dev/null
+/*
+ * adv_pci1723.c
+ * Comedi driver for the Advantech PCI-1723 card.
+ *
+ * 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: adv_pci1723
+ * Description: Advantech PCI-1723
+ * Author: yonggang <rsmgnu@gmail.com>, Ian Abbott <abbotti@mev.co.uk>
+ * Devices: [Advantech] PCI-1723 (adv_pci1723)
+ * Updated: Mon, 14 Apr 2008 15:12:56 +0100
+ * Status: works
+ *
+ * Configuration Options: not applicable, uses comedi PCI auto config
+ *
+ * Subdevice 0 is 8-channel AO, 16-bit, range +/- 10 V.
+ *
+ * Subdevice 1 is 16-channel DIO. The channels are configurable as
+ * input or output in 2 groups (0 to 7, 8 to 15). Configuring any
+ * channel implicitly configures all channels in the same group.
+ *
+ * TODO:
+ * 1. Add the two milliamp ranges to the AO subdevice (0 to 20 mA,
+ * 4 to 20 mA).
+ * 2. Read the initial ranges and values of the AO subdevice at
+ * start-up instead of reinitializing them.
+ * 3. Implement calibration.
+ */
+
+#include <linux/module.h>
+
+#include "../comedi_pci.h"
+
+/*
+ * PCI Bar 2 I/O Register map (dev->iobase)
+ */
+#define PCI1723_AO_REG(x) (0x00 + ((x) * 2))
+#define PCI1723_BOARD_ID_REG 0x10
+#define PCI1723_BOARD_ID_MASK (0xf << 0)
+#define PCI1723_SYNC_CTRL_REG 0x12
+#define PCI1723_SYNC_CTRL_ASYNC (0 << 0)
+#define PCI1723_SYNC_CTRL_SYNC (1 << 0)
+#define PCI1723_CTRL_REG 0x14
+#define PCI1723_CTRL_BUSY (1 << 15)
+#define PCI1723_CTRL_INIT (1 << 14)
+#define PCI1723_CTRL_SELF (1 << 8)
+#define PCI1723_CTRL_IDX(x) (((x) & 0x3) << 6)
+#define PCI1723_CTRL_RANGE(x) (((x) & 0x3) << 4)
+#define PCI1723_CTRL_GAIN (0 << 3)
+#define PCI1723_CTRL_OFFSET (1 << 3)
+#define PCI1723_CTRL_CHAN(x) (((x) & 0x7) << 0)
+#define PCI1723_CALIB_CTRL_REG 0x16
+#define PCI1723_CALIB_CTRL_CS (1 << 2)
+#define PCI1723_CALIB_CTRL_DAT (1 << 1)
+#define PCI1723_CALIB_CTRL_CLK (1 << 0)
+#define PCI1723_CALIB_STROBE_REG 0x18
+#define PCI1723_DIO_CTRL_REG 0x1a
+#define PCI1723_DIO_CTRL_HDIO (1 << 1)
+#define PCI1723_DIO_CTRL_LDIO (1 << 0)
+#define PCI1723_DIO_DATA_REG 0x1c
+#define PCI1723_CALIB_DATA_REG 0x1e
+#define PCI1723_SYNC_STROBE_REG 0x20
+#define PCI1723_RESET_AO_STROBE_REG 0x22
+#define PCI1723_RESET_CALIB_STROBE_REG 0x24
+#define PCI1723_RANGE_STROBE_REG 0x26
+#define PCI1723_VREF_REG 0x28
+#define PCI1723_VREF_NEG10V (0 << 0)
+#define PCI1723_VREF_0V (1 << 0)
+#define PCI1723_VREF_POS10V (3 << 0)
+
+static int pci1723_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 i;
+
+ for (i = 0; i < insn->n; i++) {
+ unsigned int val = data[i];
+
+ outw(val, dev->iobase + PCI1723_AO_REG(chan));
+ s->readback[chan] = val;
+ }
+
+ return insn->n;
+}
+
+static int pci1723_dio_insn_config(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ unsigned int chan = CR_CHAN(insn->chanspec);
+ unsigned int mask = (chan < 8) ? 0x00ff : 0xff00;
+ unsigned short mode = 0x0000; /* assume output */
+ int ret;
+
+ ret = comedi_dio_insn_config(dev, s, insn, data, mask);
+ if (ret)
+ return ret;
+
+ if (!(s->io_bits & 0x00ff))
+ mode |= PCI1723_DIO_CTRL_LDIO; /* low byte input */
+ if (!(s->io_bits & 0xff00))
+ mode |= PCI1723_DIO_CTRL_HDIO; /* high byte input */
+ outw(mode, dev->iobase + PCI1723_DIO_CTRL_REG);
+
+ return insn->n;
+}
+
+static int pci1723_dio_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 + PCI1723_DIO_DATA_REG);
+
+ data[1] = inw(dev->iobase + PCI1723_DIO_DATA_REG);
+
+ return insn->n;
+}
+
+static int pci1723_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;
+ int i;
+
+ ret = comedi_pci_enable(dev);
+ if (ret)
+ return ret;
+ dev->iobase = pci_resource_start(pcidev, 2);
+
+ ret = comedi_alloc_subdevices(dev, 2);
+ if (ret)
+ return ret;
+
+ s = &dev->subdevices[0];
+ s->type = COMEDI_SUBD_AO;
+ s->subdev_flags = SDF_WRITABLE | SDF_GROUND | SDF_COMMON;
+ s->n_chan = 8;
+ s->maxdata = 0xffff;
+ s->range_table = &range_bipolar10;
+ s->insn_write = pci1723_ao_insn_write;
+
+ ret = comedi_alloc_subdev_readback(s);
+ if (ret)
+ return ret;
+
+ /* synchronously reset all analog outputs to 0V, +/-10V range */
+ outw(PCI1723_SYNC_CTRL_SYNC, dev->iobase + PCI1723_SYNC_CTRL_REG);
+ for (i = 0; i < s->n_chan; i++) {
+ outw(PCI1723_CTRL_RANGE(0) | PCI1723_CTRL_CHAN(i),
+ PCI1723_CTRL_REG);
+ outw(0, dev->iobase + PCI1723_RANGE_STROBE_REG);
+
+ outw(0x8000, dev->iobase + PCI1723_AO_REG(i));
+ s->readback[i] = 0x8000;
+ }
+ outw(0, dev->iobase + PCI1723_SYNC_STROBE_REG);
+
+ /* disable syncronous control */
+ outw(PCI1723_SYNC_CTRL_ASYNC, dev->iobase + PCI1723_SYNC_CTRL_REG);
+
+ s = &dev->subdevices[1];
+ s->type = COMEDI_SUBD_DIO;
+ s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
+ s->n_chan = 16;
+ s->maxdata = 1;
+ s->range_table = &range_digital;
+ s->insn_config = pci1723_dio_insn_config;
+ s->insn_bits = pci1723_dio_insn_bits;
+
+ /* get initial DIO direction and state */
+ val = inw(dev->iobase + PCI1723_DIO_CTRL_REG);
+ if (!(val & PCI1723_DIO_CTRL_LDIO))
+ s->io_bits |= 0x00ff; /* low byte output */
+ if (!(val & PCI1723_DIO_CTRL_HDIO))
+ s->io_bits |= 0xff00; /* high byte output */
+ s->state = inw(dev->iobase + PCI1723_DIO_DATA_REG);
+
+ return 0;
+}
+
+static struct comedi_driver adv_pci1723_driver = {
+ .driver_name = "adv_pci1723",
+ .module = THIS_MODULE,
+ .auto_attach = pci1723_auto_attach,
+ .detach = comedi_pci_detach,
+};
+
+static int adv_pci1723_pci_probe(struct pci_dev *dev,
+ const struct pci_device_id *id)
+{
+ return comedi_pci_auto_config(dev, &adv_pci1723_driver,
+ id->driver_data);
+}
+
+static const struct pci_device_id adv_pci1723_pci_table[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_ADVANTECH, 0x1723) },
+ { 0 }
+};
+MODULE_DEVICE_TABLE(pci, adv_pci1723_pci_table);
+
+static struct pci_driver adv_pci1723_pci_driver = {
+ .name = "adv_pci1723",
+ .id_table = adv_pci1723_pci_table,
+ .probe = adv_pci1723_pci_probe,
+ .remove = comedi_pci_auto_unconfig,
+};
+module_comedi_pci_driver(adv_pci1723_driver, adv_pci1723_pci_driver);
+
+MODULE_AUTHOR("Comedi http://www.comedi.org");
+MODULE_DESCRIPTION("Advantech PCI-1723 Comedi driver");
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff