diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h')
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h b/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h new file mode 100644 index 000000000000..616c73e2b0bd --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h @@ -0,0 +1,64 @@ +/* + * Copyright 2015 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_DP_H__ +#define __DC_LINK_DP_H__ + +#define LINK_TRAINING_ATTEMPTS 4 +#define LINK_TRAINING_RETRY_DELAY 50 /* ms */ + +struct dc_link; +struct dc_stream_state; +struct dc_link_settings; + +bool dp_hbr_verify_link_cap( + struct dc_link *link, + struct dc_link_settings *known_limit_link_setting); + +bool dp_validate_mode_timing( + struct dc_link *link, + const struct dc_crtc_timing *timing); + +void decide_link_settings( + struct dc_stream_state *stream, + struct dc_link_settings *link_setting); + +bool perform_link_training_with_retries( + struct dc_link *link, + const struct dc_link_settings *link_setting, + bool skip_video_pattern, + int attempts); + +bool is_mst_supported(struct dc_link *link); + +void detect_dp_sink_caps(struct dc_link *link); + +void detect_edp_sink_caps(struct dc_link *link); + +bool is_dp_active_dongle(const struct dc_link *link); + +void dp_enable_mst_on_sink(struct dc_link *link, bool enable); + +#endif /* __DC_LINK_DP_H__ */ |