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/**************************************************************************
* Copyright (c) 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 <benjamin.r.defnet@intel.com>
* Rajesh Poornachandran <rajesh.poornachandran@intel.com>
*
*/
#ifndef _PSB_POWERMGMT_H_
#define _PSB_POWERMGMT_H_
#include <linux/pci.h>
#include <drm/drmP.h>
#define OSPM_GRAPHICS_ISLAND 0x1
#define OSPM_VIDEO_DEC_ISLAND 0x2
#define OSPM_VIDEO_ENC_ISLAND 0x4
#define OSPM_ALL_ISLANDS 0x7
/* IPC message and command defines used to enable/disable mipi panel voltages */
#define IPC_MSG_PANEL_ON_OFF 0xE9
#define IPC_CMD_PANEL_ON 1
#define IPC_CMD_PANEL_OFF 0
typedef enum _UHBUsage
{
OSPM_UHB_ONLY_IF_ON = 0,
OSPM_UHB_FORCE_POWER_ON,
} UHBUsage;
//extern int psb_check_msvdx_idle(struct drm_device *dev);
//extern int lnc_check_topaz_idle(struct drm_device *dev);
/* Use these functions to power down video HW for D0i3 purpose */
void ospm_apm_power_down_msvdx(struct drm_device *dev);
void ospm_apm_power_down_topaz(struct drm_device *dev);
void ospm_power_init(struct drm_device *dev);
void ospm_power_uninit(void);
/*
* OSPM will call these functions
*/
int ospm_power_suspend(struct pci_dev *pdev, pm_message_t state);
int ospm_power_resume(struct pci_dev *pdev);
/*
* These are the functions the driver should use to wrap all hw access
* (i.e. register reads and writes)
*/
bool ospm_power_using_hw_begin(int hw_island, UHBUsage usage);
void ospm_power_using_hw_end(int hw_island);
/*
* Use this function to do an instantaneous check for if the hw is on.
* Only use this in cases where you know the g_state_change_mutex
* is already held such as in irq install/uninstall and you need to
* prevent a deadlock situation. Otherwise use ospm_power_using_hw_begin().
*/
bool ospm_power_is_hw_on(int hw_islands);
/*
* Power up/down different hw component rails/islands
*/
void ospm_power_island_down(int hw_islands);
void ospm_power_island_up(int hw_islands);
void ospm_suspend_graphics(void);
/*
* GFX-Runtime PM callbacks
*/
int psb_runtime_suspend(struct device *dev);
int psb_runtime_resume(struct device *dev);
int psb_runtime_idle(struct device *dev);
int ospm_runtime_pm_allow(struct drm_device * dev);
void ospm_runtime_pm_forbid(struct drm_device * dev);
#endif /*_PSB_POWERMGMT_H_*/
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