1/* 2 * Copyright 2018 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 __DCE_I2C_SW_H__ 27#define __DCE_I2C_SW_H__ 28 29enum { 30 DCE_I2C_DEFAULT_I2C_SW_SPEED = 50, 31 I2C_SW_RETRIES = 10, 32 I2C_SW_TIMEOUT_DELAY = 3000, 33}; 34 35struct dce_i2c_sw { 36 struct ddc *ddc; 37 struct dc_context *ctx; 38 uint32_t clock_delay; 39 uint32_t speed; 40}; 41 42void dce_i2c_sw_construct( 43 struct dce_i2c_sw *dce_i2c_sw, 44 struct dc_context *ctx); 45 46bool dce_i2c_submit_command_sw( 47 struct resource_pool *pool, 48 struct ddc *ddc, 49 struct i2c_command *cmd, 50 struct dce_i2c_sw *dce_i2c_sw); 51 52bool dce_i2c_engine_acquire_sw( 53 struct dce_i2c_sw *dce_i2c_sw, 54 struct ddc *ddc_handle); 55 56#endif 57 58