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      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