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 #include "dce_i2c.h" 26 #include "reg_helper.h" 27 28 bool dce_i2c_submit_command( 29 struct resource_pool *pool, 30 struct ddc *ddc, 31 struct i2c_command *cmd) 32 { 33 struct dce_i2c_hw *dce_i2c_hw; 34 struct dce_i2c_sw *dce_i2c_sw; 35 36 if (!ddc) { 37 BREAK_TO_DEBUGGER(); 38 return false; 39 } 40 41 if (!cmd) { 42 BREAK_TO_DEBUGGER(); 43 return false; 44 } 45 46 /* The software engine is only available on dce8 */ 47 dce_i2c_sw = dce_i2c_acquire_i2c_sw_engine(pool, ddc); 48 49 if (!dce_i2c_sw) { 50 dce_i2c_hw = acquire_i2c_hw_engine(pool, ddc); 51 52 if (!dce_i2c_hw) 53 return false; 54 55 return dce_i2c_submit_command_hw(pool, ddc, cmd, dce_i2c_hw); 56 } 57 58 return dce_i2c_submit_command_sw(pool, ddc, cmd, dce_i2c_sw); 59 60 } 61