Staging: comedi: add new driver for Adlink PCI-7230 devices

Signed-off-by: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/comedi/drivers/Makefile

@@ -25,6 +25,7 @@ obj-$(CONFIG_COMEDI_PCI_DRIVERS)	+= addi_apci_3120.o
 obj-$(CONFIG_COMEDI_PCI_DRIVERS)	+= addi_apci_3501.o
 obj-$(CONFIG_COMEDI_PCI_DRIVERS)	+= addi_apci_3xxx.o
 obj-$(CONFIG_COMEDI_PCI_DRIVERS)	+= adl_pci6208.o
+obj-$(CONFIG_COMEDI_PCI_DRIVERS)	+= adl_pci7230.o
 obj-$(CONFIG_COMEDI_PCI_DRIVERS)	+= adl_pci7296.o
 obj-$(CONFIG_COMEDI_PCI_DRIVERS)	+= adl_pci7432.o
 obj-$(CONFIG_COMEDI_PCI_DRIVERS)	+= adl_pci8164.o

drivers/staging/comedi/drivers/adl_pci7230.c

+/*
+    comedi/drivers/adl_pci7230.c
+
+    Hardware comedi driver fot PCI7230 Adlink card
+    Copyright (C) 2010 David Fernandez <dfcastelao@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.
+
+    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: adl_pci7230
+Description: Driver for the Adlink PCI-7230 32 ch. isolated digital io board
+Devices: [ADLink] PCI-7230 (adl_pci7230)
+Author: David Fernandez <dfcastelao@gmail.com>
+Status: experimental
+Updated: Mon, 14 Apr 2008 15:08:14 +0100
+
+Configuration Options:
+  [0] - PCI bus of device (optional)
+  [1] - PCI slot of device (optional)
+  If bus/slot is not specified, the first supported
+  PCI device found will be used.
+*/
+
+#include "../comedidev.h"
+#include <linux/kernel.h>
+#include "comedi_pci.h"
+
+#define PCI7230_DI      0x00
+#define PCI7230_DO	    0x00
+
+#define PCI_DEVICE_ID_PCI7230 0x7230
+
+static DEFINE_PCI_DEVICE_TABLE(adl_pci7230_pci_table) = {
+	{
+		PCI_VENDOR_ID_ADLINK,
+		PCI_DEVICE_ID_PCI7230,
+		PCI_ANY_ID,
+		PCI_ANY_ID,
+		0,
+		0,
+		0
+	},
+	{0}
+};
+
+MODULE_DEVICE_TABLE(pci, adl_pci7230_pci_table);
+
+struct adl_pci7230_private {
+	int data;
+	struct pci_dev *pci_dev;
+};
+
+#define devpriv ((struct adl_pci7230_private *)dev->private)
+
+static int adl_pci7230_attach(struct comedi_device *dev,
+	struct comedi_devconfig *it);
+static int adl_pci7230_detach(struct comedi_device *dev);
+static struct comedi_driver driver_adl_pci7230 = {
+	.driver_name = "adl_pci7230",
+	.module = THIS_MODULE,
+	.attach = adl_pci7230_attach,
+	.detach = adl_pci7230_detach,
+};
+
+/* Digital IO */
+
+static int adl_pci7230_di_insn_bits(struct comedi_device *dev,
+	struct comedi_subdevice *s,
+	struct comedi_insn *insn,
+	unsigned int *data);
+
+static int adl_pci7230_do_insn_bits(struct comedi_device *dev,
+	struct comedi_subdevice *s,
+	struct comedi_insn *insn,
+	unsigned int *data);
+
+static int adl_pci7230_attach(struct comedi_device *dev,
+	struct comedi_devconfig *it)
+{
+	struct pci_dev *pcidev;
+	struct comedi_subdevice *s;
+	int bus, slot;
+
+	printk(KERN_INFO "comedi%d: adl_pci7230\n", dev->minor);
+
+	dev->board_name = "pci7230";
+	bus = it->options[0];
+	slot = it->options[1];
+
+	if (alloc_private(dev, sizeof(struct adl_pci7230_private)) < 0)
+		return -ENOMEM;
+
+	if (alloc_subdevices(dev, 2) < 0)
+		return -ENOMEM;
+
+	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)) {
+
+		if (pcidev->vendor == PCI_VENDOR_ID_ADLINK &&
+			pcidev->device == PCI_DEVICE_ID_PCI7230) {
+			if (bus || slot) {
+				/* requested particular bus/slot */
+				if (pcidev->bus->number != bus ||
+					PCI_SLOT(pcidev->devfn) != slot) {
+					continue;
+				}
+			}
+			devpriv->pci_dev = pcidev;
+			break;
+		}
+	}
+	if (pcidev == NULL) {
+		printk(KERN_ERR "comedi%d: no supported board found! (req. bus/slot : %d/%d)\n",
+			dev->minor, bus, slot);
+		return -EIO;
+	}
+	if (comedi_pci_enable(pcidev, "adl_pci7230") < 0) {
+		printk(KERN_ERR "comedi%d: Failed to enable PCI device and request regions\n",
+			dev->minor);
+		return -EIO;
+	}
+	dev->iobase = pci_resource_start(pcidev, 2);
+	printk(KERN_DEBUG "comedi: base addr %4lx\n", dev->iobase);
+
+	s = dev->subdevices + 0;
+	/* Isolated do */
+	s->type = COMEDI_SUBD_DO;
+	s->subdev_flags = SDF_WRITABLE | SDF_GROUND | SDF_COMMON;
+	s->n_chan = 16;
+	s->maxdata = 1;
+	s->range_table = &range_digital;
+	s->insn_bits = adl_pci7230_do_insn_bits;
+
+	s = dev->subdevices + 1;
+	/* Isolated di */
+	s->type = COMEDI_SUBD_DI;
+	s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_COMMON;
+	s->n_chan = 16;
+	s->maxdata = 1;
+	s->range_table = &range_digital;
+	s->insn_bits = adl_pci7230_di_insn_bits;
+
+	printk(KERN_DEBUG "comedi: attached\n");
+
+	return 1;
+}
+
+static int adl_pci7230_detach(struct comedi_device *dev)
+{
+	printk(KERN_DEBUG "comedi%d: pci7230: remove\n", dev->minor);
+
+	if (devpriv && devpriv->pci_dev) {
+		if (dev->iobase)
+			comedi_pci_disable(devpriv->pci_dev);
+		pci_dev_put(devpriv->pci_dev);
+	}
+
+	return 0;
+}
+
+static int adl_pci7230_do_insn_bits(struct comedi_device *dev,
+	struct comedi_subdevice *s,
+	struct comedi_insn *insn,
+	unsigned int *data)
+{
+	if (insn->n != 2)
+		return -EINVAL;
+
+	if (data[0]) {
+		s->state &= ~data[0];
+		s->state |= (data[0] & data[1]);
+
+		outl((s->state  << 16) & 0xffffffff, dev->iobase + PCI7230_DO);
+	}
+
+	return 2;
+}
+
+static int adl_pci7230_di_insn_bits(struct comedi_device *dev,
+	struct comedi_subdevice *s,
+	struct comedi_insn *insn,
+	unsigned int *data)
+{
+	if (insn->n != 2)
+		return -EINVAL;
+
+	data[1] = inl(dev->iobase + PCI7230_DI) & 0xffffffff;
+
+	return 2;
+}
+
+COMEDI_PCI_INITCLEANUP(driver_adl_pci7230, adl_pci7230_pci_table);