1 /* 2 * Copyright 2022 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: AMD 23 * 24 */ 25 26 #ifndef __DC_LINK_DP_IRQ_HANDLER_H__ 27 #define __DC_LINK_DP_IRQ_HANDLER_H__ 28 29 #include "link.h" 30 bool dp_parse_link_loss_status( 31 struct dc_link *link, 32 union hpd_irq_data *hpd_irq_dpcd_data); 33 bool dp_should_allow_hpd_rx_irq(const struct dc_link *link); 34 void dp_handle_link_loss(struct dc_link *link); 35 enum dc_status dp_read_hpd_rx_irq_data( 36 struct dc_link *link, 37 union hpd_irq_data *irq_data); 38 bool dp_handle_hpd_rx_irq(struct dc_link *link, 39 union hpd_irq_data *out_hpd_irq_dpcd_data, bool *out_link_loss, 40 bool defer_handling, bool *has_left_work); 41 #endif /* __DC_LINK_DP_IRQ_HANDLER_H__ */ 42