--- /dev/null
+/*
+ * comedi/drivers/dyna_pci10xx.c
+ * Copyright (C) 2011 Prashant Shah, pshah.mumbai@gmail.com
+ *
+ * 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: dyna_pci10xx
+ * Description: Dynalog India PCI DAQ Cards, http://www.dynalogindia.com/
+ * Devices: [Dynalog] PCI-1050 (dyna_pci1050)
+ * Author: Prashant Shah <pshah.mumbai@gmail.com>
+ * Status: Stable
+ *
+ * Developed at Automation Labs, Chemical Dept., IIT Bombay, India.
+ * Prof. Kannan Moudgalya <kannan@iitb.ac.in>
+ * http://www.iitb.ac.in
+ *
+ * Notes :
+ * - Dynalog India Pvt. Ltd. does not have a registered PCI Vendor ID and
+ * they are using the PLX Technlogies Vendor ID since that is the PCI Chip
+ * used in the card.
+ * - Dynalog India Pvt. Ltd. has provided the internal register specification
+ * for their cards in their manuals.
+ */
+
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/mutex.h>
+
+#include "../comedi_pci.h"
+
+#define READ_TIMEOUT 50
+
+static const struct comedi_lrange range_pci1050_ai = {
+ 3, {
+ BIP_RANGE(10),
+ BIP_RANGE(5),
+ UNI_RANGE(10)
+ }
+};
+
+static const char range_codes_pci1050_ai[] = { 0x00, 0x10, 0x30 };
+
+struct dyna_pci10xx_private {
+ struct mutex mutex;
+ unsigned long BADR3;
+};
+
+static int dyna_pci10xx_ai_eoc(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned long context)
+{
+ unsigned int status;
+
+ status = inw_p(dev->iobase);
+ if (status & (1 << 15))
+ return 0;
+ return -EBUSY;
+}
+
+static int dyna_pci10xx_insn_read_ai(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ struct dyna_pci10xx_private *devpriv = dev->private;
+ int n;
+ u16 d = 0;
+ int ret = 0;
+ unsigned int chan, range;
+
+ /* get the channel number and range */
+ chan = CR_CHAN(insn->chanspec);
+ range = range_codes_pci1050_ai[CR_RANGE((insn->chanspec))];
+
+ mutex_lock(&devpriv->mutex);
+ /* convert n samples */
+ for (n = 0; n < insn->n; n++) {
+ /* trigger conversion */
+ smp_mb();
+ outw_p(0x0000 + range + chan, dev->iobase + 2);
+ udelay(10);
+
+ ret = comedi_timeout(dev, s, insn, dyna_pci10xx_ai_eoc, 0);
+ if (ret)
+ break;
+
+ /* read data */
+ d = inw_p(dev->iobase);
+ /* mask the first 4 bits - EOC bits */
+ d &= 0x0FFF;
+ data[n] = d;
+ }
+ mutex_unlock(&devpriv->mutex);
+
+ /* return the number of samples read/written */
+ return ret ? ret : n;
+}
+
+/* analog output callback */
+static int dyna_pci10xx_insn_write_ao(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ struct dyna_pci10xx_private *devpriv = dev->private;
+ int n;
+ unsigned int chan, range;
+
+ chan = CR_CHAN(insn->chanspec);
+ range = range_codes_pci1050_ai[CR_RANGE((insn->chanspec))];
+
+ mutex_lock(&devpriv->mutex);
+ for (n = 0; n < insn->n; n++) {
+ smp_mb();
+ /* trigger conversion and write data */
+ outw_p(data[n], dev->iobase);
+ udelay(10);
+ }
+ mutex_unlock(&devpriv->mutex);
+ return n;
+}
+
+/* digital input bit interface */
+static int dyna_pci10xx_di_insn_bits(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ struct dyna_pci10xx_private *devpriv = dev->private;
+ u16 d = 0;
+
+ mutex_lock(&devpriv->mutex);
+ smp_mb();
+ d = inw_p(devpriv->BADR3);
+ udelay(10);
+
+ /* on return the data[0] contains output and data[1] contains input */
+ data[1] = d;
+ data[0] = s->state;
+ mutex_unlock(&devpriv->mutex);
+ return insn->n;
+}
+
+static int dyna_pci10xx_do_insn_bits(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ struct dyna_pci10xx_private *devpriv = dev->private;
+
+ mutex_lock(&devpriv->mutex);
+ if (comedi_dio_update_state(s, data)) {
+ smp_mb();
+ outw_p(s->state, devpriv->BADR3);
+ udelay(10);
+ }
+
+ data[1] = s->state;
+ mutex_unlock(&devpriv->mutex);
+
+ return insn->n;
+}
+
+static int dyna_pci10xx_auto_attach(struct comedi_device *dev,
+ unsigned long context_unused)
+{
+ struct pci_dev *pcidev = comedi_to_pci_dev(dev);
+ struct dyna_pci10xx_private *devpriv;
+ struct comedi_subdevice *s;
+ int ret;
+
+ devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
+ if (!devpriv)
+ return -ENOMEM;
+
+ ret = comedi_pci_enable(dev);
+ if (ret)
+ return ret;
+ dev->iobase = pci_resource_start(pcidev, 2);
+ devpriv->BADR3 = pci_resource_start(pcidev, 3);
+
+ mutex_init(&devpriv->mutex);
+
+ ret = comedi_alloc_subdevices(dev, 4);
+ if (ret)
+ return ret;
+
+ /* analog input */
+ s = &dev->subdevices[0];
+ s->type = COMEDI_SUBD_AI;
+ s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF;
+ s->n_chan = 16;
+ s->maxdata = 0x0FFF;
+ s->range_table = &range_pci1050_ai;
+ s->len_chanlist = 16;
+ s->insn_read = dyna_pci10xx_insn_read_ai;
+
+ /* analog output */
+ s = &dev->subdevices[1];
+ s->type = COMEDI_SUBD_AO;
+ s->subdev_flags = SDF_WRITABLE;
+ s->n_chan = 16;
+ s->maxdata = 0x0FFF;
+ s->range_table = &range_unipolar10;
+ s->len_chanlist = 16;
+ s->insn_write = dyna_pci10xx_insn_write_ao;
+
+ /* digital input */
+ s = &dev->subdevices[2];
+ s->type = COMEDI_SUBD_DI;
+ s->subdev_flags = SDF_READABLE;
+ s->n_chan = 16;
+ s->maxdata = 1;
+ s->range_table = &range_digital;
+ s->len_chanlist = 16;
+ s->insn_bits = dyna_pci10xx_di_insn_bits;
+
+ /* digital output */
+ s = &dev->subdevices[3];
+ s->type = COMEDI_SUBD_DO;
+ s->subdev_flags = SDF_WRITABLE;
+ s->n_chan = 16;
+ s->maxdata = 1;
+ s->range_table = &range_digital;
+ s->len_chanlist = 16;
+ s->state = 0;
+ s->insn_bits = dyna_pci10xx_do_insn_bits;
+
+ return 0;
+}
+
+static void dyna_pci10xx_detach(struct comedi_device *dev)
+{
+ struct dyna_pci10xx_private *devpriv = dev->private;
+
+ comedi_pci_detach(dev);
+ if (devpriv)
+ mutex_destroy(&devpriv->mutex);
+}
+
+static struct comedi_driver dyna_pci10xx_driver = {
+ .driver_name = "dyna_pci10xx",
+ .module = THIS_MODULE,
+ .auto_attach = dyna_pci10xx_auto_attach,
+ .detach = dyna_pci10xx_detach,
+};
+
+static int dyna_pci10xx_pci_probe(struct pci_dev *dev,
+ const struct pci_device_id *id)
+{
+ return comedi_pci_auto_config(dev, &dyna_pci10xx_driver,
+ id->driver_data);
+}
+
+static const struct pci_device_id dyna_pci10xx_pci_table[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_PLX, 0x1050) },
+ { 0 }
+};
+MODULE_DEVICE_TABLE(pci, dyna_pci10xx_pci_table);
+
+static struct pci_driver dyna_pci10xx_pci_driver = {
+ .name = "dyna_pci10xx",
+ .id_table = dyna_pci10xx_pci_table,
+ .probe = dyna_pci10xx_pci_probe,
+ .remove = comedi_pci_auto_unconfig,
+};
+module_comedi_pci_driver(dyna_pci10xx_driver, dyna_pci10xx_pci_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Prashant Shah <pshah.mumbai@gmail.com>");
+MODULE_DESCRIPTION("Comedi based drivers for Dynalog PCI DAQ cards");
Code Review / kvmfornfv.git / blobdiff