/************************************************************************** * Copyright (c) 2009-2011, Intel Corporation. * All Rights Reserved. * 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. * * Authors: * Benjamin Defnet <benjamin.r.defnet@intel.com> * Rajesh Poornachandran <rajesh.poornachandran@intel.com> * Massively reworked * Alan Cox <alan@linux.intel.com> */ #ifndef _PSB_POWERMGMT_H_ #define _PSB_POWERMGMT_H_ #include <linux/pci.h> struct device; struct drm_device; void gma_power_init(struct drm_device *dev); void gma_power_uninit(struct drm_device *dev); /* * The kernel bus power management will call these functions */ int gma_power_suspend(struct device *dev); int gma_power_resume(struct device *dev); int gma_power_thaw(struct device *dev); int gma_power_freeze(struct device *dev); int gma_power_restore(struct device *_dev); /* * These are the functions the driver should use to wrap all hw access * (i.e. register reads and writes) */ bool gma_power_begin(struct drm_device *dev, bool force); void gma_power_end(struct drm_device *dev); /* * Use this function to do an instantaneous check for if the hw is on. * Only use this in cases where you know the mutex is already held such * as in irq install/uninstall and you need to * prevent a deadlock situation. Otherwise use gma_power_begin(). */ bool gma_power_is_on(struct drm_device *dev); /* * GFX-Runtime PM callbacks */ int psb_runtime_suspend(struct device *dev); int psb_runtime_resume(struct device *dev); int psb_runtime_idle(struct device *dev); #endif /*_PSB_POWERMGMT_H_*/