enable ? "en" : "dis", ret);
return ret;
}
+
+void dm_helpers_mst_enable_stream_features(const struct dc_stream_state *stream)
+{
+ /* TODO: virtual DPCD */
+ struct dc_link *link = stream->link;
+ union down_spread_ctrl old_downspread;
+ union down_spread_ctrl new_downspread;
+
+ if (link->aux_access_disabled)
+ return;
+
+ if (!dm_helpers_dp_read_dpcd(link->ctx, link, DP_DOWNSPREAD_CTRL,
+ &old_downspread.raw,
+ sizeof(old_downspread)))
+ return;
+
+ new_downspread.raw = old_downspread.raw;
+ new_downspread.bits.IGNORE_MSA_TIMING_PARAM =
+ (stream->ignore_msa_timing_param) ? 1 : 0;
+
+ if (new_downspread.raw != old_downspread.raw)
+ dm_helpers_dp_write_dpcd(link->ctx, link, DP_DOWNSPREAD_CTRL,
+ &new_downspread.raw,
+ sizeof(new_downspread));
+}
static void enable_stream_features(struct pipe_ctx *pipe_ctx)
{
struct dc_stream_state *stream = pipe_ctx->stream;
- struct dc_link *link = stream->link;
- union down_spread_ctrl old_downspread;
- union down_spread_ctrl new_downspread;
- core_link_read_dpcd(link, DP_DOWNSPREAD_CTRL,
- &old_downspread.raw, sizeof(old_downspread));
+ if (pipe_ctx->stream->signal != SIGNAL_TYPE_DISPLAY_PORT_MST) {
+ struct dc_link *link = stream->link;
+ union down_spread_ctrl old_downspread;
+ union down_spread_ctrl new_downspread;
+
+ core_link_read_dpcd(link, DP_DOWNSPREAD_CTRL,
+ &old_downspread.raw, sizeof(old_downspread));
- new_downspread.raw = old_downspread.raw;
+ new_downspread.raw = old_downspread.raw;
- new_downspread.bits.IGNORE_MSA_TIMING_PARAM =
- (stream->ignore_msa_timing_param) ? 1 : 0;
+ new_downspread.bits.IGNORE_MSA_TIMING_PARAM =
+ (stream->ignore_msa_timing_param) ? 1 : 0;
- if (new_downspread.raw != old_downspread.raw) {
- core_link_write_dpcd(link, DP_DOWNSPREAD_CTRL,
- &new_downspread.raw, sizeof(new_downspread));
+ if (new_downspread.raw != old_downspread.raw) {
+ core_link_write_dpcd(link, DP_DOWNSPREAD_CTRL,
+ &new_downspread.raw, sizeof(new_downspread));
+ }
+
+ } else {
+ dm_helpers_mst_enable_stream_features(stream);
}
}