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/*
* Copyright 2012-15 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: AMD
*
*/
#ifndef __DAL_I2CAUX_INTERFACE_H__
#define __DAL_I2CAUX_INTERFACE_H__
#include "dc_types.h"
#include "gpio_service_interface.h"
#define DEFAULT_AUX_MAX_DATA_SIZE 16
#define AUX_MAX_DEFER_WRITE_RETRY 20
struct aux_payload {
/* set following flag to read/write I2C data,
* reset it to read/write DPCD data */
bool i2c_over_aux;
/* set following flag to write data,
* reset it to read data */
bool write;
uint32_t address;
uint8_t length;
uint8_t *data;
};
struct aux_command {
struct aux_payload *payloads;
uint8_t number_of_payloads;
/* expressed in milliseconds
* zero means "use default value" */
uint32_t defer_delay;
/* zero means "use default value" */
uint32_t max_defer_write_retry;
enum i2c_mot_mode mot;
};
union aux_config {
struct {
uint32_t ALLOW_AUX_WHEN_HPD_LOW:1;
} bits;
uint32_t raw;
};
struct i2caux;
struct i2caux *dal_i2caux_create(
struct dc_context *ctx);
bool dal_i2caux_submit_i2c_command(
struct i2caux *i2caux,
struct ddc *ddc,
struct i2c_command *cmd);
bool dal_i2caux_submit_aux_command(
struct i2caux *i2caux,
struct ddc *ddc,
struct aux_command *cmd);
void dal_i2caux_configure_aux(
struct i2caux *i2caux,
struct ddc *ddc,
union aux_config cfg);
void dal_i2caux_destroy(
struct i2caux **ptr);
#endif
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