diff options
Diffstat (limited to 'drivers/staging/cdv/drv/psb_powermgmt.h')
| -rw-r--r-- | drivers/staging/cdv/drv/psb_powermgmt.h | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/drivers/staging/cdv/drv/psb_powermgmt.h b/drivers/staging/cdv/drv/psb_powermgmt.h new file mode 100644 index 000000000000..11f915495c02 --- /dev/null +++ b/drivers/staging/cdv/drv/psb_powermgmt.h @@ -0,0 +1,98 @@ +/************************************************************************** + * 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_*/ |