1 /* $NetBSD: dce_i2c_sw.h,v 1.2 2021/12/18 23:45:02 riastradh Exp $ */ 2 3 /* 4 * Copyright 2018 Advanced Micro Devices, Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 * 24 * Authors: AMD 25 * 26 */ 27 28 #ifndef __DCE_I2C_SW_H__ 29 #define __DCE_I2C_SW_H__ 30 31 enum { 32 DCE_I2C_DEFAULT_I2C_SW_SPEED = 50, 33 I2C_SW_RETRIES = 10, 34 I2C_SW_TIMEOUT_DELAY = 3000, 35 }; 36 37 struct dce_i2c_sw { 38 struct ddc *ddc; 39 struct dc_context *ctx; 40 uint32_t clock_delay; 41 uint32_t speed; 42 }; 43 44 void dce_i2c_sw_construct( 45 struct dce_i2c_sw *dce_i2c_sw, 46 struct dc_context *ctx); 47 48 bool dce_i2c_submit_command_sw( 49 struct resource_pool *pool, 50 struct ddc *ddc, 51 struct i2c_command *cmd, 52 struct dce_i2c_sw *dce_i2c_sw); 53 54 bool dce_i2c_engine_acquire_sw( 55 struct dce_i2c_sw *dce_i2c_sw, 56 struct ddc *ddc_handle); 57 58 #endif 59 60