diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/inc/dc_link_dpia.h')
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/inc/dc_link_dpia.h | 105 |
1 files changed, 0 insertions, 105 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/inc/dc_link_dpia.h b/drivers/gpu/drm/amd/display/dc/inc/dc_link_dpia.h deleted file mode 100644 index 39c1d1d07357..000000000000 --- a/drivers/gpu/drm/amd/display/dc/inc/dc_link_dpia.h +++ /dev/null @@ -1,105 +0,0 @@ -/* 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; -struct dc_link_settings; - -/* The approximate time (us) it takes to transmit 9 USB4 DP clock sync packets. */ -#define DPIA_CLK_SYNC_DELAY 16000 - -/* Extend interval between training status checks for manual testing. */ -#define DPIA_DEBUG_EXTENDED_AUX_RD_INTERVAL_US 60000000 - -/** @note Can remove once DP tunneling registers in upstream include/drm/drm_dp_helper.h */ -/* DPCD DP Tunneling over USB4 */ -#define DP_TUNNELING_CAPABILITIES_SUPPORT 0xe000d -#define DP_IN_ADAPTER_INFO 0xe000e -#define DP_USB4_DRIVER_ID 0xe000f -#define DP_USB4_ROUTER_TOPOLOGY_ID 0xe001b - -/* SET_CONFIG message types sent by driver. */ -enum dpia_set_config_type { - DPIA_SET_CFG_SET_LINK = 0x01, - DPIA_SET_CFG_SET_PHY_TEST_MODE = 0x05, - DPIA_SET_CFG_SET_TRAINING = 0x18, - DPIA_SET_CFG_SET_VSPE = 0x19 -}; - -/* Training stages (TS) in SET_CONFIG(SET_TRAINING) message. */ -enum dpia_set_config_ts { - DPIA_TS_DPRX_DONE = 0x00, /* Done training DPRX. */ - DPIA_TS_TPS1 = 0x01, - DPIA_TS_TPS2 = 0x02, - DPIA_TS_TPS3 = 0x03, - DPIA_TS_TPS4 = 0x07, - DPIA_TS_UFP_DONE = 0xff /* Done training DPTX-to-DPIA hop. */ -}; - -/* SET_CONFIG message data associated with messages sent by driver. */ -union dpia_set_config_data { - struct { - uint8_t mode : 1; - uint8_t reserved : 7; - } set_link; - struct { - uint8_t stage; - } set_training; - struct { - uint8_t swing : 2; - uint8_t max_swing_reached : 1; - uint8_t pre_emph : 2; - uint8_t max_pre_emph_reached : 1; - uint8_t reserved : 2; - } set_vspe; - uint8_t raw; -}; - -/* Read tunneling device capability from DPCD and update link capability - * accordingly. - */ -enum dc_status dpcd_get_tunneling_device_data(struct dc_link *link); - -/* Query hot plug status of USB4 DP tunnel. - * Returns true if HPD high. - */ -bool dc_link_dpia_query_hpd_status(struct dc_link *link); - -/* Train DP tunneling link for USB4 DPIA display endpoint. - * DPIA equivalent of dc_link_dp_perfrorm_link_training. - * Aborts link training upon detection of sink unplug. - */ -enum link_training_result dc_link_dpia_perform_link_training( - struct dc_link *link, - const struct link_resource *link_res, - const struct dc_link_settings *link_setting, - bool skip_video_pattern); - -#endif /* __DC_LINK_DPIA_H__ */ |