a98cdd8c48
[why] 1. Move dd_link_ddc functions to link_ddc. 2. Move link ddc functions declaration exposed in dc to link.h 3. Move link ddc functions declaration exposed in dm to dc_link.h 4. Remove i2caux_interface.h file Tested-by: Daniel Wheeler <Daniel.Wheeler@amd.com> Reviewed-by: Jun Lei <Jun.Lei@amd.com> Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com> Signed-off-by: Wenjing Liu <wenjing.liu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
85 lines
3.0 KiB
C
85 lines
3.0 KiB
C
/*
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* Copyright 2022 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: AMD
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*
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*/
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#ifndef __DC_LINK_H__
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#define __DC_LINK_H__
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/* FILE POLICY AND INTENDED USAGE:
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*
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* This header declares link functions exposed to dc. All functions must have
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* "link_" as prefix. For example link_run_my_function. This header is strictly
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* private in dc and should never be included in other header files. dc
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* components should include this header in their .c files in order to access
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* functions in link folder. This file should never include any header files in
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* link folder. If there is a need to expose a function declared in one of
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* header files in side link folder, you need to move the function declaration
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* into this file and prefix it with "link_".
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*/
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#include "core_types.h"
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#include "dc_link.h"
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struct gpio *link_get_hpd_gpio(struct dc_bios *dcb,
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struct graphics_object_id link_id,
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struct gpio_service *gpio_service);
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struct ddc_service_init_data {
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struct graphics_object_id id;
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struct dc_context *ctx;
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struct dc_link *link;
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bool is_dpia_link;
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};
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struct ddc_service *link_create_ddc_service(
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struct ddc_service_init_data *ddc_init_data);
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void link_destroy_ddc_service(struct ddc_service **ddc);
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bool link_is_in_aux_transaction_mode(struct ddc_service *ddc);
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bool link_query_ddc_data(
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struct ddc_service *ddc,
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uint32_t address,
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uint8_t *write_buf,
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uint32_t write_size,
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uint8_t *read_buf,
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uint32_t read_size);
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/* Attempt to submit an aux payload, retrying on timeouts, defers, and busy
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* states as outlined in the DP spec. Returns true if the request was
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* successful.
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*
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* NOTE: The function requires explicit mutex on DM side in order to prevent
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* potential race condition. DC components should call the dpcd read/write
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* function in dm_helpers in order to access dpcd safely
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*/
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bool link_aux_transfer_with_retries_no_mutex(struct ddc_service *ddc,
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struct aux_payload *payload);
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uint32_t link_get_aux_defer_delay(struct ddc_service *ddc);
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#endif /* __DC_LINK_HPD_H__ */
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