diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/inc/link_enc_cfg.h')
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/inc/link_enc_cfg.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/inc/link_enc_cfg.h b/drivers/gpu/drm/amd/display/dc/inc/link_enc_cfg.h new file mode 100644 index 000000000000..7d36e55f3097 --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/inc/link_enc_cfg.h @@ -0,0 +1,86 @@ +/* + * Copyright 2021 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_INC_LINK_ENC_CFG_H_ +#define DC_INC_LINK_ENC_CFG_H_ + +/* This module implements functionality for dynamically assigning DIG link + * encoder resources to display endpoints (links). + */ + +#include "core_types.h" + +/* + * Initialise link encoder resource tracking. + */ +void link_enc_cfg_init( + struct dc *dc, + struct dc_state *state); + +/* + * Algorithm for assigning available DIG link encoders to streams. + * + * Update link_enc_assignments table and link_enc_avail list accordingly in + * struct resource_context. + * + * Loop over all streams twice: + * a) First assign encoders to unmappable endpoints. + * b) Then assign encoders to mappable endpoints. + */ +void link_enc_cfg_link_encs_assign( + struct dc *dc, + struct dc_state *state, + struct dc_stream_state *streams[], + uint8_t stream_count); + +/* + * Unassign a link encoder from a stream. + * + * Update link_enc_assignments table and link_enc_avail list accordingly in + * struct resource_context. + */ +void link_enc_cfg_link_enc_unassign( + struct dc_state *state, + struct dc_stream_state *stream); + +/* + * Check whether the transmitter driven by a link encoder is a mappable + * endpoint. + */ +bool link_enc_cfg_is_transmitter_mappable( + struct dc_state *state, + struct link_encoder *link_enc); + +/* Return link using DIG link encoder resource. NULL if unused. */ +struct dc_link *link_enc_cfg_get_link_using_link_enc( + struct dc_state *state, + enum engine_id eng_id); + +/* Return DIG link encoder used by link. NULL if unused. */ +struct link_encoder *link_enc_cfg_get_link_enc_used_by_link( + struct dc_state *state, + struct dc_link *link); + +#endif /* DC_INC_LINK_ENC_CFG_H_ */ |