linux/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c

/*
 * Copyright 2021 Advanced Micro Devices, Inc.
 *
 * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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: AMD
 *
 */

#include "amdgpu_dm_psr.h"
#include "dc_dmub_srv.h"
#include "dc.h"
#include "dm_helpers.h"
#include "amdgpu_dm.h"
#include "modules/power/power_helpers.h"

static bool link_supports_psrsu(struct dc_link *link)
{ … }

/*
 * amdgpu_dm_set_psr_caps() - set link psr capabilities
 * @link: link
 *
 */
void amdgpu_dm_set_psr_caps(struct dc_link *link)
{ … }

/*
 * amdgpu_dm_link_setup_psr() - configure psr link
 * @stream: stream state
 *
 * Return: true if success
 */
bool amdgpu_dm_link_setup_psr(struct dc_stream_state *stream)
{ … }

/*
 * amdgpu_dm_psr_enable() - enable psr f/w
 * @stream: stream state
 *
 */
void amdgpu_dm_psr_enable(struct dc_stream_state *stream)
{ … }

/*
 * amdgpu_dm_psr_disable() - disable psr f/w
 * @stream:  stream state
 *
 * Return: true if success
 */
bool amdgpu_dm_psr_disable(struct dc_stream_state *stream)
{ … }

/*
 * amdgpu_dm_psr_disable_all() - disable psr f/w for all streams
 * if psr is enabled on any stream
 *
 * Return: true if success
 */
bool amdgpu_dm_psr_disable_all(struct amdgpu_display_manager *dm)
{ … }

/*
 * amdgpu_dm_psr_is_active_allowed() - check if psr is allowed on any stream
 * @dm:  pointer to amdgpu_display_manager
 *
 * Return: true if allowed
 */

bool amdgpu_dm_psr_is_active_allowed(struct amdgpu_display_manager *dm)
{ … }