3 * Comedi PCI driver specific functions.
5 * COMEDI - Linux Control and Measurement Device Interface
6 * Copyright (C) 1997-2000 David A. Schleef <ds@schleef.org>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
19 #include <linux/module.h>
20 #include <linux/interrupt.h>
22 #include "comedi_pci.h"
25 * comedi_to_pci_dev() - comedi_device pointer to pci_dev pointer.
26 * @dev: comedi_device struct
28 struct pci_dev *comedi_to_pci_dev(struct comedi_device *dev)
30 return dev->hw_dev ? to_pci_dev(dev->hw_dev) : NULL;
32 EXPORT_SYMBOL_GPL(comedi_to_pci_dev);
35 * comedi_pci_enable() - Enable the PCI device and request the regions.
36 * @dev: comedi_device struct
38 int comedi_pci_enable(struct comedi_device *dev)
40 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
46 rc = pci_enable_device(pcidev);
50 rc = pci_request_regions(pcidev, dev->board_name);
52 pci_disable_device(pcidev);
54 dev->ioenabled = true;
58 EXPORT_SYMBOL_GPL(comedi_pci_enable);
61 * comedi_pci_disable() - Release the regions and disable the PCI device.
62 * @dev: comedi_device struct
64 void comedi_pci_disable(struct comedi_device *dev)
66 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
68 if (pcidev && dev->ioenabled) {
69 pci_release_regions(pcidev);
70 pci_disable_device(pcidev);
72 dev->ioenabled = false;
74 EXPORT_SYMBOL_GPL(comedi_pci_disable);
77 * comedi_pci_detach() - A generic (*detach) function for PCI drivers.
78 * @dev: comedi_device struct
80 void comedi_pci_detach(struct comedi_device *dev)
82 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
84 if (!pcidev || !dev->ioenabled)
88 free_irq(dev->irq, dev);
95 comedi_pci_disable(dev);
97 EXPORT_SYMBOL_GPL(comedi_pci_detach);
100 * comedi_pci_auto_config() - Configure/probe a comedi PCI driver.
101 * @pcidev: pci_dev struct
102 * @driver: comedi_driver struct
103 * @context: driver specific data, passed to comedi_auto_config()
105 * Typically called from the pci_driver (*probe) function.
107 int comedi_pci_auto_config(struct pci_dev *pcidev,
108 struct comedi_driver *driver,
109 unsigned long context)
111 return comedi_auto_config(&pcidev->dev, driver, context);
113 EXPORT_SYMBOL_GPL(comedi_pci_auto_config);
116 * comedi_pci_auto_unconfig() - Unconfigure/remove a comedi PCI driver.
117 * @pcidev: pci_dev struct
119 * Typically called from the pci_driver (*remove) function.
121 void comedi_pci_auto_unconfig(struct pci_dev *pcidev)
123 comedi_auto_unconfig(&pcidev->dev);
125 EXPORT_SYMBOL_GPL(comedi_pci_auto_unconfig);
128 * comedi_pci_driver_register() - Register a comedi PCI driver.
129 * @comedi_driver: comedi_driver struct
130 * @pci_driver: pci_driver struct
132 * This function is used for the module_init() of comedi PCI drivers.
133 * Do not call it directly, use the module_comedi_pci_driver() helper
136 int comedi_pci_driver_register(struct comedi_driver *comedi_driver,
137 struct pci_driver *pci_driver)
141 ret = comedi_driver_register(comedi_driver);
145 ret = pci_register_driver(pci_driver);
147 comedi_driver_unregister(comedi_driver);
153 EXPORT_SYMBOL_GPL(comedi_pci_driver_register);
156 * comedi_pci_driver_unregister() - Unregister a comedi PCI driver.
157 * @comedi_driver: comedi_driver struct
158 * @pci_driver: pci_driver struct
160 * This function is used for the module_exit() of comedi PCI drivers.
161 * Do not call it directly, use the module_comedi_pci_driver() helper
164 void comedi_pci_driver_unregister(struct comedi_driver *comedi_driver,
165 struct pci_driver *pci_driver)
167 pci_unregister_driver(pci_driver);
168 comedi_driver_unregister(comedi_driver);
170 EXPORT_SYMBOL_GPL(comedi_pci_driver_unregister);
172 static int __init comedi_pci_init(void)
176 module_init(comedi_pci_init);
178 static void __exit comedi_pci_exit(void)
181 module_exit(comedi_pci_exit);
183 MODULE_AUTHOR("http://www.comedi.org");
184 MODULE_DESCRIPTION("Comedi PCI interface module");
185 MODULE_LICENSE("GPL");