drm/amd/display: Add stub to get DPIA tunneling device data (99447622) · Commits · EulixOS / Software / Kernel

drivers/gpu/drm/amd/display/dc/Makefile

+1 −1

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		@@ -59,7 +59,7 @@ include $(AMD_DC)

		DISPLAY_CORE = dc.o dc_stat.o dc_link.o dc_resource.o dc_hw_sequencer.o dc_sink.o \
		dc_surface.o dc_link_hwss.o dc_link_dp.o dc_link_ddc.o dc_debug.o dc_stream.o \
		dc_link_enc_cfg.o dc_link_dpcd.o
		dc_link_enc_cfg.o dc_link_dpia.o dc_link_dpcd.o

		ifdef CONFIG_DRM_AMD_DC_DCN
		DISPLAY_CORE += dc_vm_helper.o

drivers/gpu/drm/amd/display/dc/core/dc_link.c

+2 −0

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		@@ -1726,6 +1726,7 @@ static bool dc_link_construct_dpia(struct dc_link *link,
		/* Dummy Init for linkid */
		link->link_id.type = OBJECT_TYPE_CONNECTOR;
		link->link_id.id = CONNECTOR_ID_DISPLAY_PORT;
		link->link_id.enum_id = ENUM_ID_1 + init_params->connector_index;
		link->is_internal_display = false;
		link->connector_signal = SIGNAL_TYPE_DISPLAY_PORT;
		LINK_INFO("Connector[%d] description:signal %d\n",
		@@ -1733,6 +1734,7 @@ static bool dc_link_construct_dpia(struct dc_link *link,
		link->connector_signal);

		link->ep_type = DISPLAY_ENDPOINT_USB4_DPIA;
		link->is_dig_mapping_flexible = true;

		/* TODO: Initialize link : funcs->link_init */

drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -36,6 +36,7 @@
		#include "dpcd_defs.h"
		#include "dc_dmub_srv.h"
		#include "dce/dmub_hw_lock_mgr.h"
		#include "inc/dc_link_dpia.h"
		#include "inc/link_enc_cfg.h"

		/Travis/
		@@ -4580,6 +4581,7 @@ bool dp_retrieve_lttpr_cap(struct dc_link *link)

		/* Attempt to train in LTTPR transparent mode if repeater count exceeds 8. */
		is_lttpr_present = (dp_convert_to_count(link->dpcd_caps.lttpr_caps.phy_repeater_cnt) != 0 &&
		link->dpcd_caps.lttpr_caps.phy_repeater_cnt < 0xff &&
		link->dpcd_caps.lttpr_caps.max_lane_count > 0 &&
		link->dpcd_caps.lttpr_caps.max_lane_count <= 4 &&
		link->dpcd_caps.lttpr_caps.revision.raw >= 0x14);
		@@ -4628,6 +4630,8 @@ static bool retrieve_link_cap(struct dc_link *link)
		LINK_AUX_DEFAULT_LTTPR_TIMEOUT_PERIOD);

		is_lttpr_present = dp_retrieve_lttpr_cap(link);
		/* Read DP tunneling information. */
		status = dpcd_get_tunneling_device_data(link);

		status = core_link_read_dpcd(link, DP_SET_POWER,
		&dpcd_power_state, sizeof(dpcd_power_state));

drivers/gpu/drm/amd/display/dc/core/dc_link_dpia.c

0 → 100644

+35 −0

Original line number	Diff line number	Diff line
		// SPDX-License-Identifier: MIT
		/*
		* 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 "dc_link_dpia.h"
		#include "inc/core_status.h"
		#include "dc_link.h"

		enum dc_status dpcd_get_tunneling_device_data(struct dc_link *link)
		{
		/** @todo Read corresponding DPCD region and update link caps. */
		return DC_OK;
		}

drivers/gpu/drm/amd/display/dc/inc/dc_link_dpia.h

0 → 100644

+39 −0

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		/* SPDX-License-Identifier: MIT */
		/*
		* 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
		*
		*/

		#ifndef __DC_LINK_DPIA_H__
		#define __DC_LINK_DPIA_H__

		/* This module implements functionality for training DPIA links. */

		struct dc_link;

		/* Read tunneling device capability from DPCD and update link capability
		* accordingly.
		*/
		enum dc_status dpcd_get_tunneling_device_data(struct dc_link *link);

		#endif /* __DC_LINK_DPIA_H__ */