641f064e5d
Addresses change... Remove the paragraph with the FSF address from all the comedi source files. Also, remove the paragraph about the finding the complete GPL in the COPYING file since it's unnecessary. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
147 lines
3.8 KiB
C
147 lines
3.8 KiB
C
/*
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* comedi_pci.c
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* Comedi PCI driver specific functions.
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*
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* COMEDI - Linux Control and Measurement Device Interface
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* Copyright (C) 1997-2000 David A. Schleef <ds@schleef.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/pci.h>
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#include "comedidev.h"
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/**
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* comedi_to_pci_dev() - comedi_device pointer to pci_dev pointer.
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* @dev: comedi_device struct
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*/
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struct pci_dev *comedi_to_pci_dev(struct comedi_device *dev)
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{
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return dev->hw_dev ? to_pci_dev(dev->hw_dev) : NULL;
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}
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EXPORT_SYMBOL_GPL(comedi_to_pci_dev);
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/**
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* comedi_pci_enable() - Enable the PCI device and request the regions.
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* @dev: comedi_device struct
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*/
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int comedi_pci_enable(struct comedi_device *dev)
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{
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struct pci_dev *pcidev = comedi_to_pci_dev(dev);
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int rc;
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if (!pcidev)
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return -ENODEV;
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rc = pci_enable_device(pcidev);
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if (rc < 0)
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return rc;
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rc = pci_request_regions(pcidev, dev->board_name);
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if (rc < 0)
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pci_disable_device(pcidev);
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else
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dev->ioenabled = true;
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return rc;
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}
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EXPORT_SYMBOL_GPL(comedi_pci_enable);
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/**
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* comedi_pci_disable() - Release the regions and disable the PCI device.
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* @dev: comedi_device struct
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*/
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void comedi_pci_disable(struct comedi_device *dev)
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{
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struct pci_dev *pcidev = comedi_to_pci_dev(dev);
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if (pcidev && dev->ioenabled) {
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pci_release_regions(pcidev);
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pci_disable_device(pcidev);
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}
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dev->ioenabled = false;
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}
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EXPORT_SYMBOL_GPL(comedi_pci_disable);
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/**
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* comedi_pci_auto_config() - Configure/probe a comedi PCI driver.
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* @pcidev: pci_dev struct
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* @driver: comedi_driver struct
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* @context: driver specific data, passed to comedi_auto_config()
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*
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* Typically called from the pci_driver (*probe) function.
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*/
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int comedi_pci_auto_config(struct pci_dev *pcidev,
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struct comedi_driver *driver,
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unsigned long context)
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{
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return comedi_auto_config(&pcidev->dev, driver, context);
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}
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EXPORT_SYMBOL_GPL(comedi_pci_auto_config);
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/**
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* comedi_pci_auto_unconfig() - Unconfigure/remove a comedi PCI driver.
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* @pcidev: pci_dev struct
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*
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* Typically called from the pci_driver (*remove) function.
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*/
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void comedi_pci_auto_unconfig(struct pci_dev *pcidev)
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{
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comedi_auto_unconfig(&pcidev->dev);
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}
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EXPORT_SYMBOL_GPL(comedi_pci_auto_unconfig);
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/**
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* comedi_pci_driver_register() - Register a comedi PCI driver.
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* @comedi_driver: comedi_driver struct
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* @pci_driver: pci_driver struct
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*
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* This function is used for the module_init() of comedi PCI drivers.
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* Do not call it directly, use the module_comedi_pci_driver() helper
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* macro instead.
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*/
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int comedi_pci_driver_register(struct comedi_driver *comedi_driver,
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struct pci_driver *pci_driver)
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{
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int ret;
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ret = comedi_driver_register(comedi_driver);
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if (ret < 0)
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return ret;
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ret = pci_register_driver(pci_driver);
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if (ret < 0) {
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comedi_driver_unregister(comedi_driver);
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return ret;
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}
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return 0;
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}
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EXPORT_SYMBOL_GPL(comedi_pci_driver_register);
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/**
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* comedi_pci_driver_unregister() - Unregister a comedi PCI driver.
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* @comedi_driver: comedi_driver struct
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* @pci_driver: pci_driver struct
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*
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* This function is used for the module_exit() of comedi PCI drivers.
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* Do not call it directly, use the module_comedi_pci_driver() helper
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* macro instead.
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*/
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void comedi_pci_driver_unregister(struct comedi_driver *comedi_driver,
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struct pci_driver *pci_driver)
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{
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pci_unregister_driver(pci_driver);
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comedi_driver_unregister(comedi_driver);
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}
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EXPORT_SYMBOL_GPL(comedi_pci_driver_unregister);
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