1*bbbb262dSAlan Cox /************************************************************************** 2*bbbb262dSAlan Cox * Copyright (c) 2009-2011, Intel Corporation. 3*bbbb262dSAlan Cox * All Rights Reserved. 4*bbbb262dSAlan Cox 5*bbbb262dSAlan Cox * Permission is hereby granted, free of charge, to any person obtaining a 6*bbbb262dSAlan Cox * copy of this software and associated documentation files (the "Software"), 7*bbbb262dSAlan Cox * to deal in the Software without restriction, including without limitation 8*bbbb262dSAlan Cox * the rights to use, copy, modify, merge, publish, distribute, sublicense, 9*bbbb262dSAlan Cox * and/or sell copies of the Software, and to permit persons to whom the 10*bbbb262dSAlan Cox * Software is furnished to do so, subject to the following conditions: 11*bbbb262dSAlan Cox * 12*bbbb262dSAlan Cox * The above copyright notice and this permission notice (including the next 13*bbbb262dSAlan Cox * paragraph) shall be included in all copies or substantial portions of the 14*bbbb262dSAlan Cox * Software. 15*bbbb262dSAlan Cox * 16*bbbb262dSAlan Cox * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17*bbbb262dSAlan Cox * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18*bbbb262dSAlan Cox * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19*bbbb262dSAlan Cox * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20*bbbb262dSAlan Cox * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21*bbbb262dSAlan Cox * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22*bbbb262dSAlan Cox * SOFTWARE. 23*bbbb262dSAlan Cox * 24*bbbb262dSAlan Cox * Authors: 25*bbbb262dSAlan Cox * Benjamin Defnet <benjamin.r.defnet@intel.com> 26*bbbb262dSAlan Cox * Rajesh Poornachandran <rajesh.poornachandran@intel.com> 27*bbbb262dSAlan Cox * Massively reworked 28*bbbb262dSAlan Cox * Alan Cox <alan@linux.intel.com> 29*bbbb262dSAlan Cox */ 30*bbbb262dSAlan Cox #ifndef _PSB_POWERMGMT_H_ 31*bbbb262dSAlan Cox #define _PSB_POWERMGMT_H_ 32*bbbb262dSAlan Cox 33*bbbb262dSAlan Cox #include <linux/pci.h> 34*bbbb262dSAlan Cox #include <drm/drmP.h> 35*bbbb262dSAlan Cox 36*bbbb262dSAlan Cox void gma_power_init(struct drm_device *dev); 37*bbbb262dSAlan Cox void gma_power_uninit(struct drm_device *dev); 38*bbbb262dSAlan Cox 39*bbbb262dSAlan Cox /* 40*bbbb262dSAlan Cox * The kernel bus power management will call these functions 41*bbbb262dSAlan Cox */ 42*bbbb262dSAlan Cox int gma_power_suspend(struct device *dev); 43*bbbb262dSAlan Cox int gma_power_resume(struct device *dev); 44*bbbb262dSAlan Cox 45*bbbb262dSAlan Cox /* 46*bbbb262dSAlan Cox * These are the functions the driver should use to wrap all hw access 47*bbbb262dSAlan Cox * (i.e. register reads and writes) 48*bbbb262dSAlan Cox */ 49*bbbb262dSAlan Cox bool gma_power_begin(struct drm_device *dev, bool force); 50*bbbb262dSAlan Cox void gma_power_end(struct drm_device *dev); 51*bbbb262dSAlan Cox 52*bbbb262dSAlan Cox /* 53*bbbb262dSAlan Cox * Use this function to do an instantaneous check for if the hw is on. 54*bbbb262dSAlan Cox * Only use this in cases where you know the mutex is already held such 55*bbbb262dSAlan Cox * as in irq install/uninstall and you need to 56*bbbb262dSAlan Cox * prevent a deadlock situation. Otherwise use gma_power_begin(). 57*bbbb262dSAlan Cox */ 58*bbbb262dSAlan Cox bool gma_power_is_on(struct drm_device *dev); 59*bbbb262dSAlan Cox 60*bbbb262dSAlan Cox /* 61*bbbb262dSAlan Cox * GFX-Runtime PM callbacks 62*bbbb262dSAlan Cox */ 63*bbbb262dSAlan Cox int psb_runtime_suspend(struct device *dev); 64*bbbb262dSAlan Cox int psb_runtime_resume(struct device *dev); 65*bbbb262dSAlan Cox int psb_runtime_idle(struct device *dev); 66*bbbb262dSAlan Cox 67*bbbb262dSAlan Cox #endif /*_PSB_POWERMGMT_H_*/ 68