899e2aaddb
DRM's DP helpers take care of dealing with the error code for us. In order not to step on each other's toes we'll need to be able to simply read auch channel replies without further logic based on return values. Signed-off-by: Harry Wentland <harry.wentland@amd.com> Reviewed-by: Sun peng Li <Sunpeng.Li@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
87 lines
2.6 KiB
C
87 lines
2.6 KiB
C
/*
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* Copyright 2012-15 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 __DAL_AUX_ENGINE_H__
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#define __DAL_AUX_ENGINE_H__
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#include "dc_ddc_types.h"
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struct aux_engine;
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struct aux_engine_funcs {
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void (*destroy)(
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struct aux_engine **ptr);
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bool (*acquire_engine)(
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struct aux_engine *engine);
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void (*configure)(
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struct aux_engine *engine,
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union aux_config cfg);
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void (*submit_channel_request)(
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struct aux_engine *engine,
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struct aux_request_transaction_data *request);
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void (*process_channel_reply)(
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struct aux_engine *engine,
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struct aux_reply_transaction_data *reply);
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int (*read_channel_reply)(
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struct aux_engine *engine,
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uint32_t size,
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uint8_t *buffer,
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uint8_t *reply_result,
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uint32_t *sw_status);
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enum aux_channel_operation_result (*get_channel_status)(
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struct aux_engine *engine,
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uint8_t *returned_bytes);
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bool (*is_engine_available) (
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struct aux_engine *engine);
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};
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struct aux_engine {
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struct engine base;
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const struct aux_engine_funcs *funcs;
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/* following values are expressed in milliseconds */
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uint32_t delay;
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uint32_t max_defer_write_retry;
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bool acquire_reset;
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};
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void dal_aux_engine_construct(
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struct aux_engine *engine,
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struct dc_context *ctx);
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void dal_aux_engine_destruct(
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struct aux_engine *engine);
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bool dal_aux_engine_submit_request(
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struct engine *ptr,
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struct i2caux_transaction_request *request,
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bool middle_of_transaction);
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bool dal_aux_engine_acquire(
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struct engine *ptr,
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struct ddc *ddc);
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enum i2caux_engine_type dal_aux_engine_get_engine_type(
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const struct engine *engine);
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#endif
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