diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/comedi_pci.h')
-rw-r--r-- | drivers/staging/comedi/drivers/comedi_pci.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/drivers/staging/comedi/drivers/comedi_pci.h b/drivers/staging/comedi/drivers/comedi_pci.h new file mode 100644 index 000000000000..c14a036a0536 --- /dev/null +++ b/drivers/staging/comedi/drivers/comedi_pci.h @@ -0,0 +1,60 @@ +/* + comedi/drivers/comedi_pci.h + Various PCI functions for drivers. + + Copyright (C) 2007 MEV Ltd. <http://www.mev.co.uk/> + + 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. + +*/ + +#ifndef _COMEDI_PCI_H_ +#define _COMEDI_PCI_H_ + +#include <linux/pci.h> + +/* + * Enable the PCI device and request the regions. + */ +static inline int comedi_pci_enable(struct pci_dev *pdev, const char *res_name) +{ + int rc; + + rc = pci_enable_device(pdev); + if (rc < 0) + return rc; + + rc = pci_request_regions(pdev, res_name); + if (rc < 0) + pci_disable_device(pdev); + + return rc; +} + +/* + * Release the regions and disable the PCI device. + * + * This must be matched with a previous successful call to comedi_pci_enable(). + */ +static inline void comedi_pci_disable(struct pci_dev *pdev) +{ + pci_release_regions(pdev); + pci_disable_device(pdev); +} + +#endif |