From: Sung Joon Kim <sungjoon....@amd.com>
[why]
Supporting UHBR10 link rate on eDP leverages
the existing DP2.0 code but need to add some small
adjustments in code.
[how]
Acknowledge the given DPCD caps for UHBR10
link rate support and allow DP2.0 programming
sequence and link training for eDP.
Reviewed-by: Wenjing Liu <wenjing....@amd.com>
Signed-off-by: Sung Joon Kim <sungjoon....@amd.com>
Signed-off-by: Roman Li <roman...@amd.com>
---
drivers/gpu/drm/amd/display/dc/dc.h | 1 +
.../amd/display/dc/hwss/dce110/dce110_hwseq.c | 23 ++++++++++---------
.../gpu/drm/amd/display/dc/link/link_dpms.c | 4 ++--
.../link/protocols/link_edp_panel_control.c | 3 +++
4 files changed, 18 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h
b/drivers/gpu/drm/amd/display/dc/dc.h
index 6b036417a73a..3de311533571 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -1760,6 +1760,7 @@ struct dc_link {
bool dongle_mode_timing_override;
bool blank_stream_on_ocs_change;
bool read_dpcd204h_on_irq_hpd;
+ bool disable_assr_for_uhbr;
} wa_flags;
struct link_mst_stream_allocation_table mst_stream_alloc_table;
diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c
b/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c
index 246fa300ee95..d52ce58c6a98 100644
--- a/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c
@@ -1232,20 +1232,21 @@ void dce110_blank_stream(struct pipe_ctx *pipe_ctx)
* has changed or they enter protection state and hang.
*/
msleep(60);
- } else if (pipe_ctx->stream->signal == SIGNAL_TYPE_EDP) {
- if (!link->dc->config.edp_no_power_sequencing) {
- /*
- * Sometimes, DP receiver chip power-controlled
externally by an
- * Embedded Controller could be treated and
used as eDP,
- * if it drives mobile display. In this case,
- * we shouldn't be doing power-sequencing,
hence we can skip
- * waiting for T9-ready.
- */
- link->dc->link_srv->edp_receiver_ready_T9(link);
- }
}
}
+ if (pipe_ctx->stream->signal == SIGNAL_TYPE_EDP &&
+ !link->dc->config.edp_no_power_sequencing) {
+ /*
+ * Sometimes, DP receiver chip power-controlled
externally by an
+ * Embedded Controller could be treated and used as eDP,
+ * if it drives mobile display. In this case,
+ * we shouldn't be doing power-sequencing, hence we can
skip
+ * waiting for T9-ready.
+ */
+ link->dc->link_srv->edp_receiver_ready_T9(link);
+ }
+
}
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dpms.c
b/drivers/gpu/drm/amd/display/dc/link/link_dpms.c
index d6550b904b16..c4e03482ba9a 100644
--- a/drivers/gpu/drm/amd/display/dc/link/link_dpms.c
+++ b/drivers/gpu/drm/amd/display/dc/link/link_dpms.c
@@ -2358,7 +2358,7 @@ void link_set_dpms_off(struct pipe_ctx *pipe_ctx)
if (pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST)
deallocate_mst_payload(pipe_ctx);
- else if (pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT &&
+ else if (dc_is_dp_sst_signal(pipe_ctx->stream->signal) &&
dp_is_128b_132b_signal(pipe_ctx))
update_sst_payload(pipe_ctx, false);
@@ -2591,7 +2591,7 @@ void link_set_dpms_on(
if (pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST)
allocate_mst_payload(pipe_ctx);
- else if (pipe_ctx->stream->signal == SIGNAL_TYPE_DISPLAY_PORT &&
+ else if (dc_is_dp_sst_signal(pipe_ctx->stream->signal) &&
dp_is_128b_132b_signal(pipe_ctx))
update_sst_payload(pipe_ctx, true);
diff --git
a/drivers/gpu/drm/amd/display/dc/link/protocols/link_edp_panel_control.c
b/drivers/gpu/drm/amd/display/dc/link/protocols/link_edp_panel_control.c
index 070b6c8c1aef..3aa05a2be6c0 100644
--- a/drivers/gpu/drm/amd/display/dc/link/protocols/link_edp_panel_control.c
+++ b/drivers/gpu/drm/amd/display/dc/link/protocols/link_edp_panel_control.c
@@ -1168,6 +1168,9 @@ static void edp_set_assr_enable(const struct dc *pDC,
struct dc_link *link,
link_enc_index = link->link_enc->transmitter - TRANSMITTER_UNIPHY_A;
if (link_res->hpo_dp_link_enc) {
+ if (link->wa_flags.disable_assr_for_uhbr)
+ return;
+
link_enc_index = link_res->hpo_dp_link_enc->inst;
use_hpo_dp_link_enc = true;
}
--
2.34.1
