/* * Copyright 2023 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_replay.h"#include "dc.h"#include "dm_helpers.h"#include "amdgpu_dm.h"#include "modules/power/power_helpers.h"#include "dmub/inc/dmub_cmd.h"#include "dc/inc/link.h" /* * link_supports_replay() - check if the link supports replay * @link: link * @aconnector: aconnector * */static bool link_supports_replay(struct dc_link *link, struct amdgpu_dm_connector *aconnector){	struct dm_connector_state *state = to_dm_connector_state(aconnector->base.state);	struct dpcd_caps *dpcd_caps = &link->dpcd_caps;	struct adaptive_sync_caps *as_caps = &link->dpcd_caps.adaptive_sync_caps; 	if (!state->freesync_capable)		return false; 	if (!aconnector->vsdb_info.replay_mode)		return false; 	// Check the eDP version	if (dpcd_caps->edp_rev < EDP_REVISION_13)		return false; 	if (!dpcd_caps->alpm_caps.bits.AUX_WAKE_ALPM_CAP)		return false; 	// Check adaptive sync support cap	if (!as_caps->dp_adap_sync_caps.bits.ADAPTIVE_SYNC_SDP_SUPPORT)		return false; 	return true;} /* * amdgpu_dm_setup_replay() - setup replay configuration * @link: link * @aconnector: aconnector * */bool amdgpu_dm_setup_replay(struct dc_link *link, struct amdgpu_dm_connector *aconnector){	struct replay_config pr_config;	union replay_debug_flags *debug_flags = NULL; 	// For eDP, if Replay is supported, return true to skip checks	if (link->replay_settings.config.replay_supported)		return true; 	if (!dc_is_embedded_signal(link->connector_signal))		return false; 	if (link->panel_config.psr.disallow_replay)		return false; 	if (!link_supports_replay(link, aconnector))		return false; 	// Mark Replay is supported in link and update related attributes	pr_config.replay_supported = true;	pr_config.replay_power_opt_supported = 0;	pr_config.replay_enable_option |= pr_enable_option_static_screen;	pr_config.replay_timing_sync_supported = aconnector->max_vfreq >= 2 * aconnector->min_vfreq ? true : false; 	if (!pr_config.replay_timing_sync_supported)		pr_config.replay_enable_option &= ~pr_enable_option_general_ui; 	debug_flags = (union replay_debug_flags *)&pr_config.debug_flags;	debug_flags->u32All = 0;	debug_flags->bitfields.visual_confirm =		link->ctx->dc->debug.visual_confirm == VISUAL_CONFIRM_REPLAY ? true : false; 	link->replay_settings.replay_feature_enabled = true; 	init_replay_config(link, &pr_config); 	return true;}  /* * amdgpu_dm_replay_enable() - enable replay f/w * @stream: stream state * * Return: true if success */bool amdgpu_dm_replay_enable(struct dc_stream_state *stream, bool wait){	uint64_t state;	unsigned int retry_count;	bool replay_active = true;	const unsigned int max_retry = 1000;	bool force_static = true;	struct dc_link *link = NULL;  	if (stream == NULL)		return false; 	link = stream->link; 	if (link == NULL)		return false; 	link->dc->link_srv->edp_setup_replay(link, stream); 	link->dc->link_srv->edp_set_replay_allow_active(link, NULL, false, false, NULL); 	link->dc->link_srv->edp_set_replay_allow_active(link, &replay_active, false, true, NULL); 	if (wait == true) { 		for (retry_count = 0; retry_count <= max_retry; retry_count++) {			dc_link_get_replay_state(link, &state);			if (replay_active) {				if (state != REPLAY_STATE_0 &&					(!force_static || state == REPLAY_STATE_3))					break;			} else {				if (state == REPLAY_STATE_0)					break;			}			udelay(500);		} 		/* assert if max retry hit */		if (retry_count >= max_retry)			ASSERT(0);	} else {		/* To-do: Add trace log */	} 	return true;} /* * amdgpu_dm_replay_disable() - disable replay f/w * @stream:  stream state * * Return: true if success */bool amdgpu_dm_replay_disable(struct dc_stream_state *stream){ 	if (stream->link) {		DRM_DEBUG_DRIVER("Disabling replay...\n");		stream->link->dc->link_srv->edp_set_replay_allow_active(stream->link, NULL, false, false, NULL);		return true;	} 	return false;}