1 /* 2 * Copyright 2012-15 Advanced Micro Devices, Inc. 3 * 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: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 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. 21 * 22 * Authors: AMD 23 * 24 */ 25 26 #ifndef __DAL_I2C_HW_ENGINE_DCE80_H__ 27 #define __DAL_I2C_HW_ENGINE_DCE80_H__ 28 29 struct i2c_hw_engine_dce80 { 30 struct i2c_hw_engine base; 31 struct { 32 uint32_t DC_I2C_DDCX_SETUP; 33 uint32_t DC_I2C_DDCX_SPEED; 34 } addr; 35 uint32_t engine_id; 36 /* expressed in kilohertz */ 37 uint32_t reference_frequency; 38 /* number of bytes currently used in HW buffer */ 39 uint32_t buffer_used_bytes; 40 /* number of pending transactions (before GO) */ 41 uint32_t transaction_count; 42 uint32_t engine_keep_power_up_count; 43 }; 44 45 struct i2c_hw_engine_dce80_create_arg { 46 uint32_t engine_id; 47 uint32_t reference_frequency; 48 uint32_t default_speed; 49 struct dc_context *ctx; 50 }; 51 52 struct i2c_engine *dal_i2c_hw_engine_dce80_create( 53 const struct i2c_hw_engine_dce80_create_arg *arg); 54 #endif 55