1 /**************************************************************************
2 * Copyright (c) 2009, Intel Corporation.
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:
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
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
25 * Benjamin Defnet <benjamin.r.defnet@intel.com>
26 * Rajesh Poornachandran <rajesh.poornachandran@intel.com>
29 #ifndef _PSB_POWERMGMT_H_
30 #define _PSB_POWERMGMT_H_
32 #include <linux/pci.h>
35 #define OSPM_GRAPHICS_ISLAND 0x1
36 #define OSPM_VIDEO_ENC_ISLAND 0x2
37 #define OSPM_VIDEO_DEC_ISLAND 0x4
38 #define OSPM_DISPLAY_ISLAND 0x8
39 #define OSPM_GL3_CACHE_ISLAND 0x10
40 #define OSPM_ALL_ISLANDS 0x1f
42 /* IPC message and command defines used to enable/disable mipi panel voltages */
43 #define IPC_MSG_PANEL_ON_OFF 0xE9
44 #define IPC_CMD_PANEL_ON 1
45 #define IPC_CMD_PANEL_OFF 0
47 typedef enum _UHBUsage
49 OSPM_UHB_ONLY_IF_ON = 0,
50 OSPM_UHB_FORCE_POWER_ON,
53 /* Use these functions to power down video HW for D0i3 purpose */
55 void ospm_power_init(struct drm_device *dev);
56 void ospm_power_uninit(void);
60 * OSPM will call these functions
62 int ospm_power_suspend(struct pci_dev *pdev, pm_message_t state);
63 int ospm_power_resume(struct pci_dev *pdev);
66 * These are the functions the driver should use to wrap all hw access
67 * (i.e. register reads and writes)
69 bool ospm_power_using_hw_begin(int hw_island, UHBUsage usage);
70 void ospm_power_using_hw_end(int hw_island);
73 * Use this function to do an instantaneous check for if the hw is on.
74 * Only use this in cases where you know the g_state_change_mutex
75 * is already held such as in irq install/uninstall and you need to
76 * prevent a deadlock situation. Otherwise use ospm_power_using_hw_begin().
78 bool ospm_power_is_hw_on(int hw_islands);
81 * Power up/down different hw component rails/islands
83 void ospm_power_island_down(int hw_islands);
84 void ospm_power_island_up(int hw_islands);
85 void ospm_suspend_graphics(void);
87 * GFX-Runtime PM callbacks
89 int psb_runtime_suspend(struct device *dev);
90 int psb_runtime_resume(struct device *dev);
91 int psb_runtime_idle(struct device *dev);
92 int ospm_runtime_pm_allow(struct drm_device * dev);
93 void ospm_runtime_pm_forbid(struct drm_device * dev);
96 #endif /*_PSB_POWERMGMT_H_*/