dc/dce/dce_i2c_sw.h

0001 /*
0002  * Copyright 2018 Advanced Micro Devices, Inc.
0003  *
0004  * Permission is hereby granted, free of charge, to any person obtaining a
0005  * copy of this software and associated documentation files (the "Software"),
0006  * to deal in the Software without restriction, including without limitation
0007  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
0008  * and/or sell copies of the Software, and to permit persons to whom the
0009  * Software is furnished to do so, subject to the following conditions:
0010  *
0011  * The above copyright notice and this permission notice shall be included in
0012  * all copies or substantial portions of the Software.
0013  *
0014  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
0015  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
0016  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
0017  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
0018  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
0019  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
0020  * OTHER DEALINGS IN THE SOFTWARE.
0021  *
0022  * Authors: AMD
0023  *
0024  */
0025
0026 #ifndef __DCE_I2C_SW_H__
0027 #define __DCE_I2C_SW_H__
0028
0029 enum {
0030     DCE_I2C_DEFAULT_I2C_SW_SPEED = 50,
0031     I2C_SW_RETRIES = 10,
0032     I2C_SW_TIMEOUT_DELAY = 3000,
0033 };
0034
0035 struct dce_i2c_sw {
0036     struct ddc *ddc;
0037     struct dc_context *ctx;
0038     uint32_t clock_delay;
0039     uint32_t speed;
0040 };
0041
0042 void dce_i2c_sw_construct(
0043     struct dce_i2c_sw *dce_i2c_sw,
0044     struct dc_context *ctx);
0045
0046 bool dce_i2c_submit_command_sw(
0047     struct resource_pool *pool,
0048     struct ddc *ddc,
0049     struct i2c_command *cmd,
0050     struct dce_i2c_sw *dce_i2c_sw);
0051
0052 bool dce_i2c_engine_acquire_sw(
0053     struct dce_i2c_sw *dce_i2c_sw,
0054     struct ddc *ddc_handle);
0055
0056 #endif
0057