Initial import

1 files changed, 282 insertions, 0 deletions

diff --git a/drivers/staging/comedi/drivers/dyna_pci10xx.c b/drivers/staging/comedi/drivers/dyna_pci10xx.c
new file mode 100644
index 000000000..c9eb26fab
--- /dev/null
+++ b/drivers/staging/comedi/drivers/dyna_pci10xx.c
@@ -0,0 +1,282 @@
+/*
+ * 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");