| Alan Cox | bbbb262 | 2011-11-03 18:21:31 +0000 | [diff] [blame] | 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 | |
| 36 | void gma_power_init(struct drm_device *dev); |
| 37 | void gma_power_uninit(struct drm_device *dev); |
| 38 | |
| 39 | /* |
| 40 | * The kernel bus power management will call these functions |
| 41 | */ |
| 42 | int gma_power_suspend(struct device *dev); |
| 43 | int gma_power_resume(struct device *dev); |
| 44 | |
| 45 | /* |
| 46 | * These are the functions the driver should use to wrap all hw access |
| 47 | * (i.e. register reads and writes) |
| 48 | */ |
| 49 | bool gma_power_begin(struct drm_device *dev, bool force); |
| 50 | void gma_power_end(struct drm_device *dev); |
| 51 | |
| 52 | /* |
| 53 | * Use this function to do an instantaneous check for if the hw is on. |
| 54 | * Only use this in cases where you know the mutex is already held such |
| 55 | * as in irq install/uninstall and you need to |
| 56 | * prevent a deadlock situation. Otherwise use gma_power_begin(). |
| 57 | */ |
| 58 | bool gma_power_is_on(struct drm_device *dev); |
| 59 | |
| 60 | /* |
| 61 | * GFX-Runtime PM callbacks |
| 62 | */ |
| 63 | int psb_runtime_suspend(struct device *dev); |
| 64 | int psb_runtime_resume(struct device *dev); |
| 65 | int psb_runtime_idle(struct device *dev); |
| 66 | |
| 67 | #endif /*_PSB_POWERMGMT_H_*/ |