Release 4.15 drivers/gpu/drm/amd/display/dc/i2caux/i2c_engine.c
/*
* Copyright 2012-15 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 "dm_services.h"
/*
* Pre-requisites: headers required by header of this unit
*/
#include "include/i2caux_interface.h"
#include "engine.h"
/*
* Header of this unit
*/
#include "i2c_engine.h"
/*
* Post-requisites: headers required by this unit
*/
/*
* This unit
*/
#define FROM_ENGINE(ptr) \
container_of((ptr), struct i2c_engine, base)
bool dal_i2c_engine_acquire(
struct engine *engine,
struct ddc *ddc_handle)
{
struct i2c_engine *i2c_engine = FROM_ENGINE(engine);
uint32_t counter = 0;
bool result;
do {
result = i2c_engine->funcs->acquire_engine(
i2c_engine, ddc_handle);
if (result)
break;
/* i2c_engine is busy by VBios, lets wait and retry */
udelay(10);
++counter;
} while (counter < 2);
if (result) {
if (!i2c_engine->funcs->setup_engine(i2c_engine)) {
engine->funcs->release_engine(engine);
result = false;
}
}
return result;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Harry Wentland | 106 | 100.00% | 1 | 100.00% |
| Total | 106 | 100.00% | 1 | 100.00% |
bool dal_i2c_engine_setup_i2c_engine(
struct i2c_engine *engine)
{
/* Derivative classes do not have to override this */
return true;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Harry Wentland | 14 | 100.00% | 1 | 100.00% |
| Total | 14 | 100.00% | 1 | 100.00% |
void dal_i2c_engine_submit_channel_request(
struct i2c_engine *engine,
struct i2c_request_transaction_data *request)
{
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Harry Wentland | 14 | 100.00% | 1 | 100.00% |
| Total | 14 | 100.00% | 1 | 100.00% |
void dal_i2c_engine_process_channel_reply(
struct i2c_engine *engine,
struct i2c_reply_transaction_data *reply)
{
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Harry Wentland | 14 | 100.00% | 1 | 100.00% |
| Total | 14 | 100.00% | 1 | 100.00% |
void dal_i2c_engine_construct(
struct i2c_engine *engine,
struct dc_context *ctx)
{
dal_i2caux_construct_engine(&engine->base, ctx);
engine->timeout_delay = 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Harry Wentland | 29 | 93.55% | 1 | 50.00% |
| Dave Airlie | 2 | 6.45% | 1 | 50.00% |
| Total | 31 | 100.00% | 2 | 100.00% |
void dal_i2c_engine_destruct(
struct i2c_engine *engine)
{
dal_i2caux_destruct_engine(&engine->base);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Harry Wentland | 18 | 100.00% | 1 | 100.00% |
| Total | 18 | 100.00% | 1 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Harry Wentland | 220 | 99.10% | 1 | 50.00% |
| Dave Airlie | 2 | 0.90% | 1 | 50.00% |
| Total | 222 | 100.00% | 2 | 100.00% |
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