1. 根目录:
2. drivers
3. gpu
4. drm
5. gma500
6. opregion.h

/*
 * Copyright 2012 Intel Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 */

#if defined(CONFIG_ACPI)
extern void psb_intel_opregion_asle_intr(struct drm_device *dev);
extern void psb_intel_opregion_init(struct drm_device *dev);
extern void psb_intel_opregion_fini(struct drm_device *dev);
extern int psb_intel_opregion_setup(struct drm_device *dev);
extern void psb_intel_opregion_enable_asle(struct drm_device *dev);

#else

extern inline void psb_intel_opregion_asle_intr(struct drm_device *dev)
{
}

extern inline void psb_intel_opregion_init(struct drm_device *dev)
{
}

extern inline void psb_intel_opregion_fini(struct drm_device *dev)
{
}

extern inline int psb_intel_opregion_setup(struct drm_device *dev)
{
	return 0;
}

extern inline void psb_intel_opregion_enable_asle(struct drm_device *dev)
{
}
#endif