1/**************************************************************************
2 * Copyright (c) 2009-2011, Intel Corporation.
3 * All Rights Reserved.
4
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 *
24 * Authors:
25 *    Benjamin Defnet <benjamin.r.defnet@intel.com>
26 *    Rajesh Poornachandran <rajesh.poornachandran@intel.com>
27 * Massively reworked
28 *    Alan Cox <alan@linux.intel.com>
29 */
30#ifndef _PSB_POWERMGMT_H_
31#define _PSB_POWERMGMT_H_
32
33#include <linux/pci.h>
34#include <drm/drmP.h>
35
36void gma_power_init(struct drm_device *dev);
37void gma_power_uninit(struct drm_device *dev);
38
39/*
40 * The kernel bus power management  will call these functions
41 */
42int gma_power_suspend(struct device *dev);
43int gma_power_resume(struct device *dev);
44int gma_power_thaw(struct device *dev);
45int gma_power_freeze(struct device *dev);
46int gma_power_restore(struct device *_dev);
47
48/*
49 * These are the functions the driver should use to wrap all hw access
50 * (i.e. register reads and writes)
51 */
52bool gma_power_begin(struct drm_device *dev, bool force);
53void gma_power_end(struct drm_device *dev);
54
55/*
56 * Use this function to do an instantaneous check for if the hw is on.
57 * Only use this in cases where you know the mutex is already held such
58 * as in irq install/uninstall and you need to
59 * prevent a deadlock situation.  Otherwise use gma_power_begin().
60 */
61bool gma_power_is_on(struct drm_device *dev);
62
63/*
64 * GFX-Runtime PM callbacks
65 */
66int psb_runtime_suspend(struct device *dev);
67int psb_runtime_resume(struct device *dev);
68int psb_runtime_idle(struct device *dev);
69
70#endif /*_PSB_POWERMGMT_H_*/
71