/drivers/staging/comedi/drivers/adl_pci7432.c
https://bitbucket.org/cyanogenmod/android_kernel_asus_tf300t · C · 252 lines · 172 code · 42 blank · 38 comment · 21 complexity · 4d74b711f92910bdeb035cd08bf73499 MD5 · raw file
- /*
- comedi/drivers/adl_pci7432.c
- Hardware comedi driver fot PCI7432 Adlink card
- Copyright (C) 2004 Michel Lachine <mike@mikelachaine.ca>
- 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_pci7432
- Description: Driver for the Adlink PCI-7432 64 ch. isolated digital io board
- Devices: [ADLink] PCI-7432 (adl_pci7432)
- Author: Michel Lachaine <mike@mikelachaine.ca>
- 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 PCI7432_DI 0x00
- #define PCI7432_DO 0x00
- #define PCI_DEVICE_ID_PCI7432 0x7432
- static DEFINE_PCI_DEVICE_TABLE(adl_pci7432_pci_table) = {
- {
- PCI_VENDOR_ID_ADLINK, PCI_DEVICE_ID_PCI7432, PCI_ANY_ID,
- PCI_ANY_ID, 0, 0, 0}, {
- 0}
- };
- MODULE_DEVICE_TABLE(pci, adl_pci7432_pci_table);
- struct adl_pci7432_private {
- int data;
- struct pci_dev *pci_dev;
- };
- #define devpriv ((struct adl_pci7432_private *)dev->private)
- static int adl_pci7432_attach(struct comedi_device *dev,
- struct comedi_devconfig *it);
- static int adl_pci7432_detach(struct comedi_device *dev);
- static struct comedi_driver driver_adl_pci7432 = {
- .driver_name = "adl_pci7432",
- .module = THIS_MODULE,
- .attach = adl_pci7432_attach,
- .detach = adl_pci7432_detach,
- };
- /* Digital IO */
- static int adl_pci7432_di_insn_bits(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn,
- unsigned int *data);
- static int adl_pci7432_do_insn_bits(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn,
- unsigned int *data);
- /* */
- static int adl_pci7432_attach(struct comedi_device *dev,
- struct comedi_devconfig *it)
- {
- struct pci_dev *pcidev = NULL;
- struct comedi_subdevice *s;
- int bus, slot;
- printk(KERN_INFO "comedi%d: attach adl_pci7432\n", dev->minor);
- dev->board_name = "pci7432";
- bus = it->options[0];
- slot = it->options[1];
- if (alloc_private(dev, sizeof(struct adl_pci7432_private)) < 0)
- return -ENOMEM;
- if (alloc_subdevices(dev, 2) < 0)
- return -ENOMEM;
- for_each_pci_dev(pcidev) {
- if (pcidev->vendor == PCI_VENDOR_ID_ADLINK &&
- pcidev->device == PCI_DEVICE_ID_PCI7432) {
- 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_pci7432") < 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_INFO "comedi: base addr %4lx\n",
- dev->iobase);
- s = dev->subdevices + 0;
- s->type = COMEDI_SUBD_DI;
- s->subdev_flags =
- SDF_READABLE | SDF_GROUND | SDF_COMMON;
- s->n_chan = 32;
- s->maxdata = 1;
- s->len_chanlist = 32;
- s->io_bits = 0x00000000;
- s->range_table = &range_digital;
- s->insn_bits = adl_pci7432_di_insn_bits;
- s = dev->subdevices + 1;
- s->type = COMEDI_SUBD_DO;
- s->subdev_flags =
- SDF_WRITABLE | SDF_GROUND | SDF_COMMON;
- s->n_chan = 32;
- s->maxdata = 1;
- s->len_chanlist = 32;
- s->io_bits = 0xffffffff;
- s->range_table = &range_digital;
- s->insn_bits = adl_pci7432_do_insn_bits;
- printk(KERN_DEBUG "comedi%d: adl_pci7432 attached\n",
- dev->minor);
- return 1;
- }
- }
- printk(KERN_ERR "comedi%d: no supported board found! (req. bus/slot : %d/%d)\n",
- dev->minor, bus, slot);
- return -EIO;
- }
- static int adl_pci7432_detach(struct comedi_device *dev)
- {
- printk(KERN_INFO "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);
- }
- return 0;
- }
- static int adl_pci7432_do_insn_bits(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn,
- unsigned int *data)
- {
- printk(KERN_DEBUG "comedi: pci7432_do_insn_bits called\n");
- printk(KERN_DEBUG "comedi: data0: %8x data1: %8x\n", data[0], data[1]);
- if (insn->n != 2)
- return -EINVAL;
- if (data[0]) {
- s->state &= ~data[0];
- s->state |= (data[0] & data[1]);
- printk(KERN_DEBUG "comedi: out: %8x on iobase %4lx\n", s->state,
- dev->iobase + PCI7432_DO);
- outl(s->state & 0xffffffff, dev->iobase + PCI7432_DO);
- }
- return 2;
- }
- static int adl_pci7432_di_insn_bits(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn,
- unsigned int *data)
- {
- printk(KERN_DEBUG "comedi: pci7432_di_insn_bits called\n");
- printk(KERN_DEBUG "comedi: data0: %8x data1: %8x\n", data[0], data[1]);
- if (insn->n != 2)
- return -EINVAL;
- data[1] = inl(dev->iobase + PCI7432_DI) & 0xffffffff;
- printk(KERN_DEBUG "comedi: data1 %8x\n", data[1]);
- return 2;
- }
- static int __devinit driver_adl_pci7432_pci_probe(struct pci_dev *dev,
- const struct pci_device_id
- *ent)
- {
- return comedi_pci_auto_config(dev, driver_adl_pci7432.driver_name);
- }
- static void __devexit driver_adl_pci7432_pci_remove(struct pci_dev *dev)
- {
- comedi_pci_auto_unconfig(dev);
- }
- static struct pci_driver driver_adl_pci7432_pci_driver = {
- .id_table = adl_pci7432_pci_table,
- .probe = &driver_adl_pci7432_pci_probe,
- .remove = __devexit_p(&driver_adl_pci7432_pci_remove)
- };
- static int __init driver_adl_pci7432_init_module(void)
- {
- int retval;
- retval = comedi_driver_register(&driver_adl_pci7432);
- if (retval < 0)
- return retval;
- driver_adl_pci7432_pci_driver.name =
- (char *)driver_adl_pci7432.driver_name;
- return pci_register_driver(&driver_adl_pci7432_pci_driver);
- }
- static void __exit driver_adl_pci7432_cleanup_module(void)
- {
- pci_unregister_driver(&driver_adl_pci7432_pci_driver);
- comedi_driver_unregister(&driver_adl_pci7432);
- }
- module_init(driver_adl_pci7432_init_module);
- module_exit(driver_adl_pci7432_cleanup_module);
- MODULE_AUTHOR("Comedi http://www.comedi.org");
- MODULE_DESCRIPTION("Comedi low-level driver");
- MODULE_LICENSE("GPL");