2 * Copyright 2012-15 Advanced Micro Devices, Inc.
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26 #ifndef __DAL_I2C_SW_ENGINE_H__
27 #define __DAL_I2C_SW_ENGINE_H__
31 I2C_SW_SCL_READ_RETRIES = 128,
32 /* following value is in microseconds */
33 I2C_SW_TIMEOUT_DELAY = 3000
38 struct i2c_sw_engine {
39 struct i2c_engine base;
41 /* Values below are in KHz */
43 uint32_t default_speed;
46 struct i2c_sw_engine_create_arg {
47 uint32_t default_speed;
48 struct dc_context *ctx;
51 void dal_i2c_sw_engine_construct(
52 struct i2c_sw_engine *engine,
53 const struct i2c_sw_engine_create_arg *arg);
55 bool dal_i2caux_i2c_sw_engine_acquire_engine(
56 struct i2c_engine *engine,
57 struct ddc *ddc_handle);
59 void dal_i2c_sw_engine_destruct(
60 struct i2c_sw_engine *engine);
62 struct i2c_engine *dal_i2c_sw_engine_create(
63 const struct i2c_sw_engine_create_arg *arg);
64 enum i2caux_engine_type dal_i2c_sw_engine_get_engine_type(
65 const struct engine *engine);
66 bool dal_i2c_sw_engine_submit_request(
68 struct i2caux_transaction_request *i2caux_request,
69 bool middle_of_transaction);
70 uint32_t dal_i2c_sw_engine_get_speed(
71 const struct i2c_engine *engine);
72 void dal_i2c_sw_engine_set_speed(
73 struct i2c_engine *ptr,
75 void dal_i2c_sw_engine_submit_channel_request(
76 struct i2c_engine *ptr,
77 struct i2c_request_transaction_data *req);
78 enum i2c_channel_operation_result dal_i2c_sw_engine_get_channel_status(
79 struct i2c_engine *engine,
80 uint8_t *returned_bytes);