1/* SPDX-License-Identifier: MIT */
2/*
3 * Copyright 2021 Advanced Micro Devices, Inc.
4 *
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:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21 * OTHER DEALINGS IN THE SOFTWARE.
22 *
23 * Authors: AMD
24 *
25 */
26
27#ifndef AMDGPU_DM_AMDGPU_DM_PSR_H_
28#define AMDGPU_DM_AMDGPU_DM_PSR_H_
29
30#include "amdgpu.h"
31
32/* the number of pageflips before enabling psr */
33#define AMDGPU_DM_PSR_ENTRY_DELAY 5
34
35void amdgpu_dm_set_psr_caps(struct dc_link *link);
36void amdgpu_dm_psr_enable(struct dc_stream_state *stream);
37bool amdgpu_dm_link_setup_psr(struct dc_stream_state *stream);
38bool amdgpu_dm_psr_disable(struct dc_stream_state *stream, bool wait);
39bool amdgpu_dm_psr_disable_all(struct amdgpu_display_manager *dm);
40bool amdgpu_dm_psr_is_active_allowed(struct amdgpu_display_manager *dm);
41bool amdgpu_dm_psr_wait_disable(struct dc_stream_state *stream);
42
43#endif /* AMDGPU_DM_AMDGPU_DM_PSR_H_ */
44

source code of linux/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.h