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From 2eeb04b918764dc1b7d070c21dbbc203143b5907 Mon Sep 17 00:00:00 2001
From: Roman Li <Roman.Li@amd.com>
Date: Wed, 26 Jul 2017 16:27:37 -0400
Subject: [PATCH 0686/4131] drm/amd/display: add detect caps for edp
1. The caps detect sequence for edp is different from dp.
Added separate function for edp.
2. Removed max_link_setting and replaced it with verified
to avoid confusion.
3. Reverted sink count guard for edp powerdown as unnecessary
with the changes above.
Signed-off-by: Roman Li <Roman.Li@amd.com>
Signed-off-by: Tony Cheng <tony.cheng@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/display/dc/core/dc_link.c | 2 +-
drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 11 ++++++++---
drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c | 4 +---
drivers/gpu/drm/amd/display/dc/dc.h | 1 -
drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h | 2 ++
5 files changed, 12 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index 2487046..a983a5e 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -585,7 +585,7 @@ bool dc_link_detect(struct dc_link *link, bool boot)
}
case SIGNAL_TYPE_EDP: {
- detect_dp_sink_caps(link);
+ detect_edp_sink_caps(link);
sink_caps.transaction_type =
DDC_TRANSACTION_TYPE_I2C_OVER_AUX;
sink_caps.signal = SIGNAL_TYPE_EDP;
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 d9754b5..1750634 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
@@ -1147,7 +1147,6 @@ bool dp_hbr_verify_link_cap(
LINK_SPREAD_DISABLED;
}
- link->max_link_setting = link->verified_link_cap;
return success;
}
@@ -1466,7 +1465,7 @@ void decide_link_settings(struct dc_stream *stream,
* 2. could support the b/w requested by the timing
*/
while (current_link_setting.link_rate <=
- link->max_link_setting.link_rate) {
+ link->verified_link_cap.link_rate) {
link_bw = bandwidth_in_kbps_from_link_settings(
¤t_link_setting);
if (req_bw <= link_bw) {
@@ -1475,7 +1474,7 @@ void decide_link_settings(struct dc_stream *stream,
}
if (current_link_setting.lane_count <
- link->max_link_setting.lane_count) {
+ link->verified_link_cap.lane_count) {
current_link_setting.lane_count =
increase_lane_count(
current_link_setting.lane_count);
@@ -2294,6 +2293,12 @@ void detect_dp_sink_caps(struct dc_link *link)
/* TODO save sink caps in link->sink */
}
+void detect_edp_sink_caps(struct dc_link *link)
+{
+ retrieve_link_cap(link);
+ link->verified_link_cap = link->reported_link_cap;
+}
+
void dc_link_dp_enable_hpd(const struct dc_link *link)
{
struct link_encoder *encoder = link->link_enc;
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c
index 76dc169..f2f57a7 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c
@@ -114,9 +114,7 @@ void dp_disable_link_phy(struct dc_link *link, enum signal_type signal)
if (signal == SIGNAL_TYPE_EDP) {
link->link_enc->funcs->backlight_control(link->link_enc, false);
- if (link->dpcd_sink_count)
- link->link_enc->funcs->power_control(link->link_enc,
- false);
+ link->link_enc->funcs->power_control(link->link_enc, false);
}
link->link_enc->funcs->disable_output(link->link_enc, signal);
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index b20f7bf..58bfb86 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -744,7 +744,6 @@ struct dc_link {
*/
struct dc_link_settings reported_link_cap;
struct dc_link_settings verified_link_cap;
- struct dc_link_settings max_link_setting;
struct dc_link_settings cur_link_settings;
struct dc_lane_settings cur_lane_setting;
struct dc_link_settings preferred_link_setting;
diff --git a/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h b/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h
index 5b41850..1a4a605 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h
@@ -63,6 +63,8 @@ bool is_mst_supported(struct dc_link *link);
void detect_dp_sink_caps(struct dc_link *link);
+void detect_edp_sink_caps(struct dc_link *link);
+
bool is_dp_active_dongle(const struct dc_link *link);
void dp_enable_mst_on_sink(struct dc_link *link, bool enable);
--
2.7.4
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