2 * Copyright 2012-15 Advanced Micro Devices, Inc.
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
26 #include "dm_services.h"
29 * Pre-requisites: headers required by header of this unit
31 #include "include/i2caux_interface.h"
38 #include "i2c_engine.h"
41 * Post-requisites: headers required by this unit
48 #define FROM_ENGINE(ptr) \
49 container_of((ptr), struct i2c_engine, base)
51 bool dal_i2c_engine_acquire(
52 struct engine *engine,
53 struct ddc *ddc_handle)
55 struct i2c_engine *i2c_engine = FROM_ENGINE(engine);
61 result = i2c_engine->funcs->acquire_engine(
62 i2c_engine, ddc_handle);
67 /* i2c_engine is busy by VBios, lets wait and retry */
72 } while (counter < 2);
75 if (!i2c_engine->funcs->setup_engine(i2c_engine)) {
76 engine->funcs->release_engine(engine);
84 bool dal_i2c_engine_setup_i2c_engine(
85 struct i2c_engine *engine)
87 /* Derivative classes do not have to override this */
92 void dal_i2c_engine_submit_channel_request(
93 struct i2c_engine *engine,
94 struct i2c_request_transaction_data *request)
99 void dal_i2c_engine_process_channel_reply(
100 struct i2c_engine *engine,
101 struct i2c_reply_transaction_data *reply)
106 void dal_i2c_engine_construct(
107 struct i2c_engine *engine,
108 struct dc_context *ctx)
110 dal_i2caux_construct_engine(&engine->base, ctx);
111 engine->timeout_delay = 0;
114 void dal_i2c_engine_destruct(
115 struct i2c_engine *engine)
117 dal_i2caux_destruct_engine(&engine->base);