1*b843c749SSergey Zigachev /* 2*b843c749SSergey Zigachev * Copyright 2012-15 Advanced Micro Devices, Inc. 3*b843c749SSergey Zigachev * 4*b843c749SSergey Zigachev * Permission is hereby granted, free of charge, to any person obtaining a 5*b843c749SSergey Zigachev * copy of this software and associated documentation files (the "Software"), 6*b843c749SSergey Zigachev * to deal in the Software without restriction, including without limitation 7*b843c749SSergey Zigachev * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8*b843c749SSergey Zigachev * and/or sell copies of the Software, and to permit persons to whom the 9*b843c749SSergey Zigachev * Software is furnished to do so, subject to the following conditions: 10*b843c749SSergey Zigachev * 11*b843c749SSergey Zigachev * The above copyright notice and this permission notice shall be included in 12*b843c749SSergey Zigachev * all copies or substantial portions of the Software. 13*b843c749SSergey Zigachev * 14*b843c749SSergey Zigachev * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15*b843c749SSergey Zigachev * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16*b843c749SSergey Zigachev * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17*b843c749SSergey Zigachev * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18*b843c749SSergey Zigachev * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19*b843c749SSergey Zigachev * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20*b843c749SSergey Zigachev * OTHER DEALINGS IN THE SOFTWARE. 21*b843c749SSergey Zigachev * 22*b843c749SSergey Zigachev * Authors: AMD 23*b843c749SSergey Zigachev * 24*b843c749SSergey Zigachev */ 25*b843c749SSergey Zigachev 26*b843c749SSergey Zigachev #ifndef __DAL_ENGINE_H__ 27*b843c749SSergey Zigachev #define __DAL_ENGINE_H__ 28*b843c749SSergey Zigachev 29*b843c749SSergey Zigachev #include "dc_ddc_types.h" 30*b843c749SSergey Zigachev 31*b843c749SSergey Zigachev enum i2caux_transaction_operation { 32*b843c749SSergey Zigachev I2CAUX_TRANSACTION_READ, 33*b843c749SSergey Zigachev I2CAUX_TRANSACTION_WRITE 34*b843c749SSergey Zigachev }; 35*b843c749SSergey Zigachev 36*b843c749SSergey Zigachev enum i2caux_transaction_address_space { 37*b843c749SSergey Zigachev I2CAUX_TRANSACTION_ADDRESS_SPACE_I2C = 1, 38*b843c749SSergey Zigachev I2CAUX_TRANSACTION_ADDRESS_SPACE_DPCD 39*b843c749SSergey Zigachev }; 40*b843c749SSergey Zigachev 41*b843c749SSergey Zigachev struct i2caux_transaction_payload { 42*b843c749SSergey Zigachev enum i2caux_transaction_address_space address_space; 43*b843c749SSergey Zigachev uint32_t address; 44*b843c749SSergey Zigachev uint32_t length; 45*b843c749SSergey Zigachev uint8_t *data; 46*b843c749SSergey Zigachev }; 47*b843c749SSergey Zigachev 48*b843c749SSergey Zigachev enum i2caux_transaction_status { 49*b843c749SSergey Zigachev I2CAUX_TRANSACTION_STATUS_UNKNOWN = (-1L), 50*b843c749SSergey Zigachev I2CAUX_TRANSACTION_STATUS_SUCCEEDED, 51*b843c749SSergey Zigachev I2CAUX_TRANSACTION_STATUS_FAILED_CHANNEL_BUSY, 52*b843c749SSergey Zigachev I2CAUX_TRANSACTION_STATUS_FAILED_TIMEOUT, 53*b843c749SSergey Zigachev I2CAUX_TRANSACTION_STATUS_FAILED_PROTOCOL_ERROR, 54*b843c749SSergey Zigachev I2CAUX_TRANSACTION_STATUS_FAILED_NACK, 55*b843c749SSergey Zigachev I2CAUX_TRANSACTION_STATUS_FAILED_INCOMPLETE, 56*b843c749SSergey Zigachev I2CAUX_TRANSACTION_STATUS_FAILED_OPERATION, 57*b843c749SSergey Zigachev I2CAUX_TRANSACTION_STATUS_FAILED_INVALID_OPERATION, 58*b843c749SSergey Zigachev I2CAUX_TRANSACTION_STATUS_FAILED_BUFFER_OVERFLOW, 59*b843c749SSergey Zigachev I2CAUX_TRANSACTION_STATUS_FAILED_HPD_DISCON 60*b843c749SSergey Zigachev }; 61*b843c749SSergey Zigachev 62*b843c749SSergey Zigachev struct i2caux_transaction_request { 63*b843c749SSergey Zigachev enum i2caux_transaction_operation operation; 64*b843c749SSergey Zigachev struct i2caux_transaction_payload payload; 65*b843c749SSergey Zigachev enum i2caux_transaction_status status; 66*b843c749SSergey Zigachev }; 67*b843c749SSergey Zigachev 68*b843c749SSergey Zigachev enum i2caux_engine_type { 69*b843c749SSergey Zigachev I2CAUX_ENGINE_TYPE_UNKNOWN = (-1L), 70*b843c749SSergey Zigachev I2CAUX_ENGINE_TYPE_AUX, 71*b843c749SSergey Zigachev I2CAUX_ENGINE_TYPE_I2C_DDC_HW, 72*b843c749SSergey Zigachev I2CAUX_ENGINE_TYPE_I2C_GENERIC_HW, 73*b843c749SSergey Zigachev I2CAUX_ENGINE_TYPE_I2C_SW 74*b843c749SSergey Zigachev }; 75*b843c749SSergey Zigachev 76*b843c749SSergey Zigachev enum i2c_default_speed { 77*b843c749SSergey Zigachev I2CAUX_DEFAULT_I2C_HW_SPEED = 50, 78*b843c749SSergey Zigachev I2CAUX_DEFAULT_I2C_SW_SPEED = 50 79*b843c749SSergey Zigachev }; 80*b843c749SSergey Zigachev 81*b843c749SSergey Zigachev struct engine; 82*b843c749SSergey Zigachev 83*b843c749SSergey Zigachev struct engine_funcs { 84*b843c749SSergey Zigachev enum i2caux_engine_type (*get_engine_type)( 85*b843c749SSergey Zigachev const struct engine *engine); 86*b843c749SSergey Zigachev bool (*acquire)( 87*b843c749SSergey Zigachev struct engine *engine, 88*b843c749SSergey Zigachev struct ddc *ddc); 89*b843c749SSergey Zigachev bool (*submit_request)( 90*b843c749SSergey Zigachev struct engine *engine, 91*b843c749SSergey Zigachev struct i2caux_transaction_request *request, 92*b843c749SSergey Zigachev bool middle_of_transaction); 93*b843c749SSergey Zigachev void (*release_engine)( 94*b843c749SSergey Zigachev struct engine *engine); 95*b843c749SSergey Zigachev }; 96*b843c749SSergey Zigachev 97*b843c749SSergey Zigachev struct engine { 98*b843c749SSergey Zigachev const struct engine_funcs *funcs; 99*b843c749SSergey Zigachev uint32_t inst; 100*b843c749SSergey Zigachev struct ddc *ddc; 101*b843c749SSergey Zigachev struct dc_context *ctx; 102*b843c749SSergey Zigachev }; 103*b843c749SSergey Zigachev 104*b843c749SSergey Zigachev void dal_i2caux_construct_engine( 105*b843c749SSergey Zigachev struct engine *engine, 106*b843c749SSergey Zigachev struct dc_context *ctx); 107*b843c749SSergey Zigachev 108*b843c749SSergey Zigachev void dal_i2caux_destruct_engine( 109*b843c749SSergey Zigachev struct engine *engine); 110*b843c749SSergey Zigachev 111*b843c749SSergey Zigachev #endif 112