/*
* 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_DDC_SERVICE_H__
#define __DAL_DDC_SERVICE_H__
#include "link.h"
#define AUX_POWER_UP_WA_DELAY 500
#define I2C_OVER_AUX_DEFER_WA_DELAY 70
#define DPVGA_DONGLE_AUX_DEFER_WA_DELAY 40
#define I2C_OVER_AUX_DEFER_WA_DELAY_1MS 1
#define LINK_AUX_DEFAULT_LTTPR_TIMEOUT_PERIOD 3200 /*us*/
#define LINK_AUX_DEFAULT_TIMEOUT_PERIOD 552 /*us*/
#define EDID_SEGMENT_SIZE 256
struct ddc_service *link_create_ddc_service(
struct ddc_service_init_data *ddc_init_data);
void link_destroy_ddc_service(struct ddc_service **ddc);
void set_ddc_transaction_type(
struct ddc_service *ddc,
enum ddc_transaction_type type);
uint32_t link_get_aux_defer_delay(struct ddc_service *ddc);
bool link_is_in_aux_transaction_mode(struct ddc_service *ddc);
bool try_to_configure_aux_timeout(struct ddc_service *ddc,
uint32_t timeout);
bool link_query_ddc_data(
struct ddc_service *ddc,
uint32_t address,
uint8_t *write_buf,
uint32_t write_size,
uint8_t *read_buf,
uint32_t read_size);
/* Attempt to submit an aux payload, retrying on timeouts, defers, and busy
* states as outlined in the DP spec. Returns true if the request was
* successful.
*
* NOTE: The function requires explicit mutex on DM side in order to prevent
* potential race condition. DC components should call the dpcd read/write
* function in dm_helpers in order to access dpcd safely
*/
bool link_aux_transfer_with_retries_no_mutex(struct ddc_service *ddc,
struct aux_payload *payload);
bool link_configure_fixed_vs_pe_retimer(
struct ddc_service *ddc,
const uint8_t *data,
uint32_t length);
bool link_query_fixed_vs_pe_retimer(
struct ddc_service *ddc,
uint8_t *data,
uint32_t length);
uint32_t link_get_fixed_vs_pe_retimer_read_address(struct dc_link *link);
uint32_t link_get_fixed_vs_pe_retimer_write_address(struct dc_link *link);
void write_scdc_data(
struct ddc_service *ddc_service,
uint32_t pix_clk,
bool lte_340_scramble);
void read_scdc_data(
struct ddc_service *ddc_service);
void set_dongle_type(struct ddc_service *ddc,
enum display_dongle_type dongle_type);
struct ddc *get_ddc_pin(struct ddc_service *ddc_service);
int link_aux_transfer_raw(struct ddc_service *ddc,
struct aux_payload *payload,
enum aux_return_code_type *operation_result);
#endif /* __DAL_DDC_SERVICE_H__ */
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