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Message-ID: <20110609091529.GA1866@mail.fossee.in>
Date: Thu, 9 Jun 2011 14:45:29 +0530
From: "Prashant P. Shah" <pshah.mumbai@...il.com>
To: devel@...uxdriverproject.org
Cc: Greg Kroah-Hartman <gregkh@...e.de>,
Frank Mori Hess <fmhess@...rs.sourceforge.net>,
Ian Abbott <abbotti@....co.uk>, linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] Staging: comedi: add dyna_pci10xx0 driver
For Dynalog PCI DAQ cards:
PCI-1050
Signed-off-by: Prashant P. Shah <pshah.mumbai@...il.com>
---
drivers/staging/comedi/drivers/dyna_pci10xx.c | 463 +++++++++++++++++++++++++
1 files changed, 463 insertions(+), 0 deletions(-)
create mode 100644 drivers/staging/comedi/drivers/dyna_pci10xx.c
diff --git a/drivers/staging/comedi/drivers/dyna_pci10xx.c b/drivers/staging/comedi/drivers/dyna_pci10xx.c
new file mode 100644
index 0000000..7acb2ed
--- /dev/null
+++ b/drivers/staging/comedi/drivers/dyna_pci10xx.c
@@ -0,0 +1,463 @@
+/*
+ * comedi/drivers/dyna_pci10xx.c
+ * Copyright (C) 2011 Prashant Shah, pshah.mumbai@...il.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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ Driver: dyna_pci10xx
+ Devices: Dynalog India PCI DAQ Cards, http://www.dynalogindia.com/
+ Author: Prashant Shah <pshah.mumbai@...il.com>
+ Developed at Automation Labs, Chemical Dept., IIT Bombay, India.
+ Prof. Kannan Moudgalya <kannan@...b.ac.in>
+ http://www.iitb.ac.in
+ Status: Stable
+ Version: 1.0
+ Device Supported :
+ - Dynalog PCI 1050
+
+ 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 "../comedidev.h"
+#include "comedi_pci.h"
+#include <linux/semaphore.h>
+
+#define PCI_VENDOR_ID_DYNALOG 0x10b5
+#define DRV_NAME "dyna_pci10xx"
+
+#define READ_TIMEOUT 50
+
+static DEFINE_MUTEX(start_stop_sem);
+
+static DEFINE_PCI_DEVICE_TABLE(dyna_pci10xx_pci_table) = {
+ { PCI_DEVICE(PCI_VENDOR_ID_DYNALOG, 0x1050) },
+ { 0 }
+};
+
+MODULE_DEVICE_TABLE(pci, dyna_pci10xx_pci_table);
+
+static int dyna_pci10xx_attach(struct comedi_device *dev,
+ struct comedi_devconfig *it);
+static int dyna_pci10xx_detach(struct comedi_device *dev);
+
+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 };
+
+static const struct comedi_lrange range_pci1050_ao = { 1, {
+ UNI_RANGE(10)
+ }
+};
+
+static const char range_codes_pci1050_ao[] = { 0x00 };
+
+struct boardtype {
+ const char *name;
+ int device_id;
+ int ai_chans;
+ int ai_bits;
+ int ao_chans;
+ int ao_bits;
+ int di_chans;
+ int di_bits;
+ int do_chans;
+ int do_bits;
+ const struct comedi_lrange *range_ai;
+ const char *range_codes_ai;
+ const struct comedi_lrange *range_ao;
+ const char *range_codes_ao;
+};
+
+static const struct boardtype boardtypes[] = {
+ {
+ .name = "dyna_pci1050",
+ .device_id = 0x1050,
+ .ai_chans = 16,
+ .ai_bits = 12,
+ .ao_chans = 16,
+ .ao_bits = 12,
+ .di_chans = 16,
+ .di_bits = 16,
+ .do_chans = 16,
+ .do_bits = 16,
+ .range_ai = &range_pci1050_ai,
+ .range_codes_ai = range_codes_pci1050_ai,
+ .range_ao = &range_pci1050_ao,
+ .range_codes_ao = range_codes_pci1050_ao,
+ },
+ /* dummy entry corresponding to driver name */
+ {.name = DRV_NAME},
+};
+
+static struct comedi_driver driver_dyna_pci10xx = {
+ .driver_name = DRV_NAME,
+ .module = THIS_MODULE,
+ .attach = dyna_pci10xx_attach,
+ .detach = dyna_pci10xx_detach,
+ .board_name = &boardtypes[0].name,
+ .offset = sizeof(struct boardtype),
+ .num_names = ARRAY_SIZE(boardtypes),
+};
+
+struct dyna_pci10xx_private {
+ struct pci_dev *pci_dev; /* ptr to PCI device */
+ char valid; /* card is usable */
+ struct semaphore sem;
+
+ /* device base address registers */
+ unsigned long BADR0, BADR1, BADR2, BADR3, BADR4, BADR5;
+};
+
+#define thisboard ((const struct boardtype *)dev->board_ptr)
+#define devpriv ((struct dyna_pci10xx_private *)dev->private)
+
+/******************************************************************************/
+/************************** READ WRITE FUNCTIONS ******************************/
+/******************************************************************************/
+
+/* analog input callback */
+static int dyna_pci10xx_insn_read_ai(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn, unsigned int *data)
+{
+ int n, counter;
+ u16 d = 0;
+ unsigned int chan, range;
+
+ /* get the channel number and range */
+ chan = CR_CHAN(insn->chanspec);
+ range = thisboard->range_codes_ai[CR_RANGE((insn->chanspec))];
+
+ down(&devpriv->sem);
+ /* convert n samples */
+ for (n = 0; n < insn->n; n++) {
+ /* trigger conversion */
+ smp_mb(); udelay(10);
+ outw_p(0x0000 + range + chan, devpriv->BADR2 + 2);
+ smp_mb(); udelay(10);
+ /* read data */
+ for (counter = 0; counter < READ_TIMEOUT; counter++) {
+ d = inw_p(devpriv->BADR2);
+
+ /* check if read is successfull if the EOC bit is set */
+ if (d & (1 << 15))
+ goto conv_finish;
+ }
+ data[n] = 0;
+ printk(KERN_DEBUG "comedi: dyna_pci10xx: "
+ "timeout reading analog input\n");
+ continue;
+conv_finish:
+ /* mask the first 4 bits - EOC bits */
+ d &= 0x0FFF;
+ data[n] = d;
+ }
+ up(&devpriv->sem);
+
+ /* return the number of samples read/written */
+ return 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)
+{
+ int n;
+ unsigned int chan, range;
+
+ chan = CR_CHAN(insn->chanspec);
+ range = thisboard->range_codes_ai[CR_RANGE((insn->chanspec))];
+
+ down(&devpriv->sem);
+ for (n = 0; n < insn->n; n++) {
+ /* trigger conversion and write data */
+ outw_p(data[n], devpriv->BADR2);
+ smp_mb(); udelay(10);
+ }
+ up(&devpriv->sem);
+ 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)
+{
+ u16 d = 0;
+
+ if (insn->n != 2)
+ return -EINVAL;
+
+ down(&devpriv->sem);
+ smp_mb();
+ d = inw_p(devpriv->BADR3);
+ udelay(10);
+ up(&devpriv->sem);
+
+ /* on return the data[0] contains output and data[1] contains input */
+ data[1] = d;
+ data[0] = s->state;
+
+ return 2;
+}
+
+/* digital output bit interface */
+static int dyna_pci10xx_do_insn_bits(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn, unsigned int *data)
+{
+ if (insn->n != 2)
+ return -EINVAL;
+
+ /* The insn data is a mask in data[0] and the new data
+ * in data[1], each channel cooresponding to a bit.
+ * s->state contains the previous write data
+ */
+
+ if (data[0]) {
+ down(&devpriv->sem);
+ s->state &= ~data[0];
+ s->state |= (data[0] & data[1]);
+ smp_mb();
+ outw_p(s->state, devpriv->BADR3);
+ udelay(10);
+ up(&devpriv->sem);
+ }
+
+ /*
+ * On return, data[1] contains the value of the digital
+ * input and output lines. We just return the software copy of the
+ * output values if it was a purely digital output subdevice.
+ */
+ data[1] = s->state;
+
+ return 2;
+}
+
+/******************************************************************************/
+/*********************** INITIALIZATION FUNCTIONS *****************************/
+/******************************************************************************/
+
+static int dyna_pci10xx_attach(struct comedi_device *dev,
+ struct comedi_devconfig *it)
+{
+ struct comedi_subdevice *s;
+ struct pci_dev *pcidev;
+ unsigned int opt_bus, opt_slot;
+ int board_index, i;
+
+ mutex_lock(&start_stop_sem);
+
+ if (alloc_private(dev, sizeof(struct dyna_pci10xx_private)) < 0) {
+ printk(KERN_ERR "comedi: dyna_pci10xx: "
+ "failed to allocate memory!\n");
+ mutex_unlock(&start_stop_sem);
+ return -ENOMEM;
+ }
+
+ opt_bus = it->options[0];
+ opt_slot = it->options[1];
+ dev->board_name = thisboard->name;
+ dev->irq = 0;
+
+ /*
+ * Probe the PCI bus and located the matching device
+ */
+ for (pcidev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL);
+ pcidev != NULL;
+ pcidev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pcidev)) {
+
+ board_index = -1;
+ for (i = 0; i < ARRAY_SIZE(boardtypes); ++i) {
+ if ((pcidev->vendor == PCI_VENDOR_ID_DYNALOG) &&
+ (pcidev->device == boardtypes[i].device_id)) {
+ board_index = i;
+ break;
+ }
+ }
+ if (board_index < 0)
+ continue;
+
+ /* Found matching vendor/device. */
+ if (opt_bus || opt_slot) {
+ /* Check bus/slot. */
+ if (opt_bus != pcidev->bus->number
+ || opt_slot != PCI_SLOT(pcidev->devfn))
+ continue; /* no match */
+ }
+
+ goto found;
+ }
+ printk(KERN_ERR "comedi: dyna_pci10xx: no supported device found!\n");
+ mutex_unlock(&start_stop_sem);
+ return -EIO;
+
+found:
+
+ if (!pcidev) {
+ if (opt_bus || opt_slot) {
+ printk(KERN_ERR "comedi: dyna_pci10xx: "
+ "invalid PCI device at b:s %d:%d\n",
+ opt_bus, opt_slot);
+ } else {
+ printk(KERN_ERR "comedi: dyna_pci10xx: "
+ "invalid PCI device\n");
+ }
+ mutex_unlock(&start_stop_sem);
+ return -EIO;
+ }
+
+ if (comedi_pci_enable(pcidev, DRV_NAME)) {
+ printk(KERN_ERR "comedi: dyna_pci10xx: "
+ "failed to enable PCI device and request regions!");
+ mutex_unlock(&start_stop_sem);
+ return -EIO;
+ }
+
+ sema_init(&devpriv->sem, 1);
+ dev->board_ptr = &boardtypes[board_index];
+ devpriv->pci_dev = pcidev;
+
+ printk(KERN_INFO "comedi: dyna_pci10xx: device found!\n");
+
+ /* initialize device base address registers */
+ devpriv->BADR0 = pci_resource_start(pcidev, 0);
+ devpriv->BADR1 = pci_resource_start(pcidev, 1);
+ devpriv->BADR2 = pci_resource_start(pcidev, 2);
+ devpriv->BADR3 = pci_resource_start(pcidev, 3);
+ devpriv->BADR4 = pci_resource_start(pcidev, 4);
+ devpriv->BADR5 = pci_resource_start(pcidev, 5);
+
+ if (alloc_subdevices(dev, 4) < 0) {
+ printk(KERN_ERR "comedi: dyna_pci10xx: "
+ "failed allocating subdevices\n");
+ mutex_unlock(&start_stop_sem);
+ return -ENOMEM;
+ }
+
+ /* analog input */
+ s = dev->subdevices + 0;
+ s->type = COMEDI_SUBD_AI;
+ s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF;
+ s->n_chan = thisboard->ai_chans;
+ s->maxdata = 0x0FFF;
+ s->range_table = thisboard->range_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 = thisboard->ao_chans;
+ s->maxdata = 0x0FFF;
+ s->range_table = thisboard->range_ao;
+ 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 | SDF_GROUND;
+ s->n_chan = thisboard->di_chans;
+ s->maxdata = 1;
+ s->range_table = &range_digital;
+ s->len_chanlist = thisboard->di_chans;
+ s->insn_bits = dyna_pci10xx_di_insn_bits;
+
+ /* digital output */
+ s = dev->subdevices + 3;
+ s->type = COMEDI_SUBD_DO;
+ s->subdev_flags = SDF_WRITABLE | SDF_GROUND;
+ s->n_chan = thisboard->do_chans;
+ s->maxdata = 1;
+ s->range_table = &range_digital;
+ s->len_chanlist = thisboard->do_chans;
+ s->state = 0;
+ s->insn_bits = dyna_pci10xx_do_insn_bits;
+
+ devpriv->valid = 1;
+ mutex_unlock(&start_stop_sem);
+
+ printk(KERN_INFO "comedi: dyna_pci10xx: %s - device setup completed!\n",
+ boardtypes[board_index].name);
+
+ return 1;
+}
+
+static int dyna_pci10xx_detach(struct comedi_device *dev)
+{
+ if (devpriv->pci_dev)
+ comedi_pci_disable(devpriv->pci_dev);
+
+ return 0;
+}
+
+/* COMEDI_PCI_INITCLEANUP(dyna_pci10xx_driver, dyna_pci10xx_pci_table); */
+
+static int __devinit driver_dyna_pci10xx_pci_probe(struct pci_dev *dev,
+ const struct pci_device_id *ent)
+{
+ return comedi_pci_auto_config(dev, driver_dyna_pci10xx.driver_name);
+}
+
+static void __devexit driver_dyna_pci10xx_pci_remove(struct pci_dev *dev)
+{
+ comedi_pci_auto_unconfig(dev);
+}
+
+static struct pci_driver driver_dyna_pci10xx_pci_driver = {
+ .id_table = dyna_pci10xx_pci_table,
+ .probe = &driver_dyna_pci10xx_pci_probe,
+ .remove = __devexit_p(&driver_dyna_pci10xx_pci_remove)
+};
+
+static int __init driver_dyna_pci10xx_init_module(void)
+{
+ int retval;
+
+ retval = comedi_driver_register(&driver_dyna_pci10xx);
+ if (retval < 0)
+ return retval;
+
+ driver_dyna_pci10xx_pci_driver.name = (char *)driver_dyna_pci10xx.driver_name;
+ return pci_register_driver(&driver_dyna_pci10xx_pci_driver);
+}
+
+static void __exit driver_dyna_pci10xx_cleanup_module(void)
+{
+ pci_unregister_driver(&driver_dyna_pci10xx_pci_driver);
+ comedi_driver_unregister(&driver_dyna_pci10xx);
+}
+
+module_init(driver_dyna_pci10xx_init_module);
+module_exit(driver_dyna_pci10xx_cleanup_module);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Prashant Shah <pshah.mumbai@...il.com>");
+MODULE_DESCRIPTION("Comedi based drivers for Dynalog PCI DAQ cards");
--
1.7.1
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