| /************************************************************************** |
| * Copyright (c) 2009, 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_ENC_ISLAND 0x2 |
| #define OSPM_VIDEO_DEC_ISLAND 0x4 |
| #define OSPM_DISPLAY_ISLAND 0x8 |
| #define OSPM_GL3_CACHE_ISLAND 0x10 |
| #define OSPM_ALL_ISLANDS 0x1f |
| |
| /* 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; |
| |
| /* Use these functions to power down video HW for D0i3 purpose */ |
| |
| 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_*/ |
