diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/link/link_detection.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/link/link_detection.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_detection.c b/drivers/gpu/drm/amd/display/dc/link/link_detection.c index 24153b0df503..b8c4a04dd175 100644 --- a/drivers/gpu/drm/amd/display/dc/link/link_detection.c +++ b/drivers/gpu/drm/amd/display/dc/link/link_detection.c @@ -41,6 +41,7 @@ #include "protocols/link_dp_dpia.h" #include "protocols/link_dp_phy.h" #include "protocols/link_dp_training.h" +#include "protocols/link_dp_dpia_bw.h" #include "accessories/link_dp_trace.h" #include "link_enc_cfg.h" @@ -991,6 +992,23 @@ static bool detect_link_and_local_sink(struct dc_link *link, if (link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA && link->reported_link_cap.link_rate > LINK_RATE_HIGH3) link->reported_link_cap.link_rate = LINK_RATE_HIGH3; + + /* + * If this is DP over USB4 link then we need to: + * - Enable BW ALLOC support on DPtx if applicable + */ + if (dc->config.usb4_bw_alloc_support) { + if (link_dp_dpia_set_dptx_usb4_bw_alloc_support(link)) { + /* update with non reduced link cap if bw allocation mode is supported */ + if (link->dpia_bw_alloc_config.nrd_max_link_rate && + link->dpia_bw_alloc_config.nrd_max_lane_count) { + link->reported_link_cap.link_rate = + link->dpia_bw_alloc_config.nrd_max_link_rate; + link->reported_link_cap.lane_count = + link->dpia_bw_alloc_config.nrd_max_lane_count; + } + } + } break; } |