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author | Wenjing Liu <wenjing.liu@amd.com> | 2023-02-01 16:07:35 -0500 |
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committer | Alex Deucher <alexander.deucher@amd.com> | 2023-02-14 16:06:28 -0500 |
commit | 5ca38a18b5a47017d0e9a016661dad12322767fa (patch) | |
tree | 858aa9202442aefdffa9ddd64b6559c4f797c625 /drivers/gpu/drm/amd/display/dc/inc | |
parent | 9b0f51e8449f6f76170fda6a8dd9c417a43ce270 (diff) | |
download | linux-stable-5ca38a18b5a47017d0e9a016661dad12322767fa.tar.gz linux-stable-5ca38a18b5a47017d0e9a016661dad12322767fa.tar.bz2 linux-stable-5ca38a18b5a47017d0e9a016661dad12322767fa.zip |
drm/amd/display: move public dc link function implementation to dc_link_exports
[why]
Link is a subcomponent in dc. DM should be aware of dc link structure
as one of the abstracted objects maintained by dc. However it should
have no idea of the existence of a link component in dc dedicated to
maintain the states of dc link structure. As such we are moving link interfaces
out of dc_link.h and directly added to dc.h. We are grandually fading out
the explicit inclusion of dc_link header and eventually delete it.
On dc side, since link is a subcomponent behind dc interfaces, it is not
a good idea to implement dc interfaces in each individual subcomponent
of link which is already a subcomponent of dc. So we are decoupling it
by implementing a dc_link_exports in dc. This file will be a thin
translation layer that breaks the dependency so link is able to make
interface changes without breaking DM.
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/inc')
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/inc/link.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/inc/link.h b/drivers/gpu/drm/amd/display/dc/inc/link.h index 5e8eb367eede..e70fa0059223 100644 --- a/drivers/gpu/drm/amd/display/dc/inc/link.h +++ b/drivers/gpu/drm/amd/display/dc/inc/link.h @@ -136,4 +136,22 @@ enum dc_status link_validate_mode_timing( const struct dc_stream_state *stream, struct dc_link *link, const struct dc_crtc_timing *timing); +bool link_detect(struct dc_link *link, enum dc_detect_reason reason); +bool link_detect_connection_type(struct dc_link *link, + enum dc_connection_type *type); +const struct dc_link_status *link_get_status(const struct dc_link *link); +#ifdef CONFIG_DRM_AMD_DC_HDCP +/* return true if the connected receiver supports the hdcp version */ +bool link_is_hdcp14(struct dc_link *link, enum signal_type signal); +bool link_is_hdcp22(struct dc_link *link, enum signal_type signal); +#endif +void link_clear_dprx_states(struct dc_link *link); +bool link_reset_cur_dp_mst_topology(struct dc_link *link); +uint32_t dp_link_bandwidth_kbps( + const struct dc_link *link, + const struct dc_link_settings *link_settings); +uint32_t link_timing_bandwidth_kbps(const struct dc_crtc_timing *timing); +void link_get_cur_res_map(const struct dc *dc, uint32_t *map); +void link_restore_res_map(const struct dc *dc, uint32_t *map); + #endif /* __DC_LINK_HPD_H__ */ |