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27 #ifndef __DC_LINK_HPD_H__
28 #define __DC_LINK_HPD_H__
31 enum hpd_source_id get_hpd_line(struct dc_link *link);
33 * Function: program_hpd_filter
36 * Programs HPD filter on associated HPD line to default values.
39 * true on success, false otherwise
41 bool program_hpd_filter(const struct dc_link *link);
42 /* Query hot plug status of USB4 DP tunnel.
43 * Returns true if HPD high.
45 bool dpia_query_hpd_status(struct dc_link *link);
46 bool query_hpd_status(struct dc_link *link, uint32_t *is_hpd_high);
47 bool link_get_hpd_state(struct dc_link *link);
48 struct gpio *link_get_hpd_gpio(struct dc_bios *dcb,
49 struct graphics_object_id link_id,
50 struct gpio_service *gpio_service);
51 void link_enable_hpd(const struct dc_link *link);
52 void link_disable_hpd(const struct dc_link *link);
53 void link_enable_hpd_filter(struct dc_link *link, bool enable);
54 #endif /* __DC_LINK_HPD_H__ */