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/*
* Copyright 2022 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 __DC_LINK_HPD_H__
#define __DC_LINK_HPD_H__
#include "link.h"
enum hpd_source_id get_hpd_line(struct dc_link *link);
/*
* Function: program_hpd_filter
*
* @brief
* Programs HPD filter on associated HPD line to default values.
*
* @return
* true on success, false otherwise
*/
bool program_hpd_filter(const struct dc_link *link);
/* Query hot plug status of USB4 DP tunnel.
* Returns true if HPD high.
*/
bool dpia_query_hpd_status(struct dc_link *link);
bool query_hpd_status(struct dc_link *link, uint32_t *is_hpd_high);
bool link_get_hpd_state(struct dc_link *link);
struct gpio *link_get_hpd_gpio(struct dc_bios *dcb,
struct graphics_object_id link_id,
struct gpio_service *gpio_service);
void link_enable_hpd(const struct dc_link *link);
void link_disable_hpd(const struct dc_link *link);
void link_enable_hpd_filter(struct dc_link *link, bool enable);
#endif /* __DC_LINK_HPD_H__ */
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