/************************************************************************** * 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 <[email protected]> * Rajesh Poornachandran <[email protected]> * Massively reworked * Alan Cox <[email protected]> */ #include "gem.h" #include "power.h" #include "psb_drv.h" #include "psb_reg.h" #include "psb_intel_reg.h" #include "psb_irq.h" #include <linux/mutex.h> #include <linux/pm_runtime.h> /** * gma_power_init - initialise power manager * @dev: our device * * Set up for power management tracking of our hardware. */ void gma_power_init(struct drm_device *dev) { … } /** * gma_power_uninit - end power manager * @dev: device to end for * * Undo the effects of gma_power_init */ void gma_power_uninit(struct drm_device *dev) { … } /** * gma_suspend_display - suspend the display logic * @dev: our DRM device * * Suspend the display logic of the graphics interface */ static void gma_suspend_display(struct drm_device *dev) { … } /** * gma_resume_display - resume display side logic * @pdev: PCI device * * Resume the display hardware restoring state and enabling * as necessary. */ static void gma_resume_display(struct pci_dev *pdev) { … } /** * gma_suspend_pci - suspend PCI side * @pdev: PCI device * * Perform the suspend processing on our PCI device state */ static void gma_suspend_pci(struct pci_dev *pdev) { … } /** * gma_resume_pci - resume helper * @pdev: our PCI device * * Perform the resume processing on our PCI device state - rewrite * register state and re-enable the PCI device */ static int gma_resume_pci(struct pci_dev *pdev) { … } /** * gma_power_suspend - bus callback for suspend * @_dev: our device * * Called back by the PCI layer during a suspend of the system. We * perform the necessary shut down steps and save enough state that * we can undo this when resume is called. */ int gma_power_suspend(struct device *_dev) { … } /** * gma_power_resume - resume power * @_dev: our device * * Resume the PCI side of the graphics and then the displays */ int gma_power_resume(struct device *_dev) { … } /** * gma_power_begin - begin requiring power * @dev: our DRM device * @force_on: true to force power on * * Begin an action that requires the display power island is enabled. * We refcount the islands. */ bool gma_power_begin(struct drm_device *dev, bool force_on) { … } /** * gma_power_end - end use of power * @dev: Our DRM device * * Indicate that one of our gma_power_begin() requested periods when * the diplay island power is needed has completed. */ void gma_power_end(struct drm_device *dev) { … }
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