diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/adl_pci7296.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/adl_pci7296.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/drivers/staging/comedi/drivers/adl_pci7296.c b/drivers/staging/comedi/drivers/adl_pci7296.c new file mode 100644 index 000000000000..bd0f9ab226ef --- /dev/null +++ b/drivers/staging/comedi/drivers/adl_pci7296.c @@ -0,0 +1,174 @@ +/* + comedi/drivers/adl_pci7296.c + + 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. + + 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_pci7296 +Description: Driver for the Adlink PCI-7296 96 ch. digital io board +Devices: [ADLink] PCI-7296 (adl_pci7296) +Author: Jon Grierson <jd@renko.co.uk> +Updated: Mon, 14 Apr 2008 15:05:56 +0100 +Status: testing + +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" +#include "8255.h" +// #include "8253.h" + +#define PORT1A 0 +#define PORT2A 4 +#define PORT3A 8 +#define PORT4A 12 + +#define PCI_DEVICE_ID_PCI7296 0x7296 + +static DEFINE_PCI_DEVICE_TABLE(adl_pci7296_pci_table) = { + {PCI_VENDOR_ID_ADLINK, PCI_DEVICE_ID_PCI7296, PCI_ANY_ID, PCI_ANY_ID, 0, + 0, 0}, + {0} +}; + +MODULE_DEVICE_TABLE(pci, adl_pci7296_pci_table); + +struct adl_pci7296_private { + int data; + struct pci_dev *pci_dev; +}; + + +#define devpriv ((struct adl_pci7296_private *)dev->private) + +static int adl_pci7296_attach(struct comedi_device * dev, struct comedi_devconfig * it); +static int adl_pci7296_detach(struct comedi_device * dev); +static struct comedi_driver driver_adl_pci7296 = { + driver_name:"adl_pci7296", + module:THIS_MODULE, + attach:adl_pci7296_attach, + detach:adl_pci7296_detach, +}; + +static int adl_pci7296_attach(struct comedi_device * dev, struct comedi_devconfig * it) +{ + struct pci_dev *pcidev; + struct comedi_subdevice *s; + int bus, slot; + int ret; + + printk("comedi: attempt to attach...\n"); + printk("comedi%d: adl_pci7432\n", dev->minor); + + dev->board_name = "pci7432"; + bus = it->options[0]; + slot = it->options[1]; + + if (alloc_private(dev, sizeof(struct adl_pci7296_private)) < 0) + return -ENOMEM; + + if (alloc_subdevices(dev, 4) < 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_PCI7296) { + if (bus || slot) { + /* requested particular bus/slot */ + if (pcidev->bus->number != bus + || PCI_SLOT(pcidev->devfn) != slot) { + continue; + } + } + devpriv->pci_dev = pcidev; + if (comedi_pci_enable(pcidev, "adl_pci7296") < 0) { + printk("comedi%d: Failed to enable PCI device and request regions\n", dev->minor); + return -EIO; + } + + dev->iobase = pci_resource_start(pcidev, 2); + printk("comedi: base addr %4lx\n", dev->iobase); + + // four 8255 digital io subdevices + s = dev->subdevices + 0; + subdev_8255_init(dev, s, NULL, + (unsigned long)(dev->iobase)); + + s = dev->subdevices + 1; + ret = subdev_8255_init(dev, s, NULL, + (unsigned long)(dev->iobase + PORT2A)); + if (ret < 0) + return ret; + + s = dev->subdevices + 2; + ret = subdev_8255_init(dev, s, NULL, + (unsigned long)(dev->iobase + PORT3A)); + if (ret < 0) + return ret; + + s = dev->subdevices + 3; + ret = subdev_8255_init(dev, s, NULL, + (unsigned long)(dev->iobase + PORT4A)); + if (ret < 0) + return ret; + + printk("attached\n"); + + return 1; + } + } + + printk("comedi%d: no supported board found! (req. bus/slot : %d/%d)\n", + dev->minor, bus, slot); + return -EIO; +} + +static int adl_pci7296_detach(struct comedi_device * dev) +{ + printk("comedi%d: pci7432: remove\n", dev->minor); + + if (devpriv && devpriv->pci_dev) { + if (dev->iobase) { + comedi_pci_disable(devpriv->pci_dev); + } + pci_dev_put(devpriv->pci_dev); + } + // detach four 8255 digital io subdevices + if (dev->subdevices) { + subdev_8255_cleanup(dev, dev->subdevices + 0); + subdev_8255_cleanup(dev, dev->subdevices + 1); + subdev_8255_cleanup(dev, dev->subdevices + 2); + subdev_8255_cleanup(dev, dev->subdevices + 3); + + } + + return 0; +} + +COMEDI_PCI_INITCLEANUP(driver_adl_pci7296, adl_pci7296_pci_table); |