diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c index b0cfe21871e4..a3e1aeccd3f5 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c @@ -4554,9 +4554,19 @@ void dc_link_dp_handle_link_loss(struct dc_link *link) for (i = 0; i < MAX_PIPES; i++) { pipe_ctx = &link->dc->current_state->res_ctx.pipe_ctx[i]; - if (pipe_ctx && pipe_ctx->stream && !pipe_ctx->stream->dpms_off && - pipe_ctx->stream->link == link && !pipe_ctx->prev_odm_pipe) + if (pipe_ctx && pipe_ctx->stream && !pipe_ctx->stream->dpms_off + && pipe_ctx->stream->link == link && !pipe_ctx->prev_odm_pipe) { + // Always use max settings here for DP 1.4a LL Compliance CTS + if (link->is_automated) { + pipe_ctx->link_config.dp_link_settings.lane_count = + link->verified_link_cap.lane_count; + pipe_ctx->link_config.dp_link_settings.link_rate = + link->verified_link_cap.link_rate; + pipe_ctx->link_config.dp_link_settings.link_spread = + link->verified_link_cap.link_spread; + } core_link_enable_stream(link->dc->current_state, pipe_ctx); + } } } @@ -4597,6 +4607,8 @@ bool dc_link_handle_hpd_rx_irq(struct dc_link *link, union hpd_irq_data *out_hpd } if (hpd_irq_dpcd_data.bytes.device_service_irq.bits.AUTOMATED_TEST) { + // Workaround for DP 1.4a LL Compliance CTS as USB4 has to share encoders unlike DP and USBC + link->is_automated = true; device_service_clear.bits.AUTOMATED_TEST = 1; core_link_write_dpcd( link, @@ -7240,6 +7252,7 @@ void dp_retrain_link_dp_test(struct dc_link *link, struct pipe_ctx *pipes = &link->dc->current_state->res_ctx.pipe_ctx[0]; unsigned int i; + bool do_fallback = false; for (i = 0; i < MAX_PIPES; i++) { @@ -7272,13 +7285,16 @@ void dp_retrain_link_dp_test(struct dc_link *link, memset(&link->cur_link_settings, 0, sizeof(link->cur_link_settings)); + if (link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA) + do_fallback = true; + perform_link_training_with_retries( link_setting, skip_video_pattern, LINK_TRAINING_ATTEMPTS, &pipes[i], SIGNAL_TYPE_DISPLAY_PORT, - false); + do_fallback); link->dc->hwss.enable_stream(&pipes[i]); |