From: brichang <Brian.Chang@amd.com>
To: <amd-gfx@lists.freedesktop.org>
Cc: stylon.wang@amd.com, Brian Chang <Brian.Chang@amd.com>,
Sunpeng.Li@amd.com, Harry.Wentland@amd.com,
qingqing.zhuo@amd.com, George Shen <George.Shen@amd.com>,
Rodrigo.Siqueira@amd.com, roman.li@amd.com, solomon.chiu@amd.com,
Aurabindo.Pillai@amd.com,
Michael Strauss <michael.strauss@amd.com>,
wayne.lin@amd.com, Bhawanpreet.Lakha@amd.com,
agustin.gutierrez@amd.com, pavle.kotarac@amd.com
Subject: [PATCH 11/33] drm/amd/display: Add DC debug option to force LTTPR mode
Date: Sat, 27 Aug 2022 06:50:31 +0800 [thread overview]
Message-ID: <20220826225053.1435588-12-Brian.Chang@amd.com> (raw)
In-Reply-To: <20220826225053.1435588-1-Brian.Chang@amd.com>
From: Michael Strauss <michael.strauss@amd.com>
[WHY]
Useful for external teams debugging LTTPR issues
Reviewed-by: George Shen <George.Shen@amd.com>
Acked-by: Brian Chang <Brian.Chang@amd.com>
Signed-off-by: Michael Strauss <michael.strauss@amd.com>
---
drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 4 ++++
drivers/gpu/drm/amd/display/dc/dc.h | 1 +
2 files changed, 5 insertions(+)
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 8617de559174..7e97265b76e8 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
@@ -5032,6 +5032,10 @@ static void determine_lttpr_mode(struct dc_link *link)
bool vbios_lttpr_enable = link->dc->caps.vbios_lttpr_enable;
bool vbios_lttpr_interop = link->dc->caps.vbios_lttpr_aware;
+ if (link->ctx->dc->debug.lttpr_mode_override != 0) {
+ link->lttpr_mode = link->ctx->dc->debug.lttpr_mode_override;
+ return;
+ }
if ((link->dc->config.allow_lttpr_non_transparent_mode.bits.DP2_0 &&
link->dpcd_caps.channel_coding_cap.bits.DP_128b_132b_SUPPORTED)) {
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 2362d5ee2401..473e6a0c3310 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -846,6 +846,7 @@ struct dc_debug_options {
bool exit_idle_opt_for_cursor_updates;
bool enable_single_display_2to1_odm_policy;
bool enable_dp_dig_pixel_rate_div_policy;
+ enum lttpr_mode lttpr_mode_override;
};
struct gpu_info_soc_bounding_box_v1_0;
--
2.25.1
next prev parent reply other threads:[~2022-08-27 2:51 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-26 22:50 [PATCH 00/33] DC Patches August 27 ,2022 brichang
2022-08-26 22:50 ` [PATCH 01/33] drm/amd/display: Set ODM policy based on number of DSC slices brichang
2022-08-26 22:50 ` [PATCH 02/33] drm/amd/display: Don't choose SubVP display if ActiveMargin > 0 brichang
2022-08-26 22:50 ` [PATCH 03/33] drm/amd/display: Fix DCN32 DPSTREAMCLK_CNTL programming brichang
2022-08-26 22:50 ` [PATCH 04/33] drm/amd/display: Refine aux transaction before retrieve caps brichang
2022-08-26 22:50 ` [PATCH 05/33] drm/amd/display: Fix OTG H timing reset for dcn314 brichang
2022-08-26 22:50 ` [PATCH 06/33] drm/amd/display: add dcn35 basic support brichang
2022-08-26 22:50 ` [PATCH 07/33] drm/amd/display: set dig fifo read start level to 7 before dig fifo reset brichang
2022-08-26 22:50 ` [PATCH 08/33] drm/amd/display: Remove assert from PHY state update brichang
2022-08-26 22:50 ` [PATCH 09/33] drm/amd/display: Only commit SubVP state after pipe programming brichang
2022-08-26 22:50 ` [PATCH 10/33] drm/amd/display: add a override flag as wa for some specific dongle brichang
2022-08-26 22:50 ` brichang [this message]
2022-08-26 22:50 ` [PATCH 12/33] drm/amd/display: Cursor lag with PSR1 eDP brichang
2022-08-26 22:50 ` [PATCH 13/33] drm/amd/display: Cleanup PSR flag brichang
2022-08-26 22:50 ` [PATCH 14/33] drm/amd/display: Allow PHY state update between same states brichang
2022-08-26 22:50 ` [PATCH 15/33] drm/amd/display: Add visual confirm color support for SubVP brichang
2022-08-26 22:50 ` [PATCH 16/33] drm/amd/display: Add support for visual confirm color brichang
2022-08-26 22:50 ` [PATCH 17/33] drm/amd/display: SubVP missing scaling case brichang
2022-08-26 22:50 ` [PATCH 18/33] drm/amd/display: Refactor edp dsc codes brichang
2022-08-26 22:50 ` [PATCH 19/33] drm/amd/display: Missing HPO instance added brichang
2022-08-26 22:50 ` [PATCH 20/33] drm/amd/display: Fix CAB cursor size allocation for DCN32/321 brichang
2022-08-26 22:50 ` [PATCH 21/33] drm/amd/display: disable display fresh from MALL on an edge case for DCN321 brichang
2022-08-26 22:50 ` [PATCH 22/33] drm/amd/display: use actual cursor size instead of max for CAB allocation brichang
2022-08-26 22:50 ` [PATCH 23/33] drm/amd/display: fix wrong register access brichang
2022-08-26 22:50 ` [PATCH 24/33] drm/amd/display: Fix primary EDP link detection brichang
2022-08-26 22:50 ` [PATCH 25/33] drm/amd/display: Revert "program k1/k2 divider for virtual signal for DCN32" brichang
2022-08-26 22:50 ` [PATCH 26/33] drm/amd/display: Add comments brichang
2022-08-26 22:50 ` [PATCH 27/33] drm/amd/display: [FW Promotion] Release 0.0.132.0 brichang
2022-08-26 22:50 ` [PATCH 28/33] drm/amd/display: 3.2.201 brichang
2022-08-26 22:50 ` [PATCH 29/33] drm/amd/display: Use correct plane for CAB cursor size allocation brichang
2022-08-26 22:50 ` [PATCH 30/33] drm/amd/display: Re-initialize viewport after pipe merge brichang
2022-08-26 22:50 ` [PATCH 31/33] drm/amd/display: Fix check for stream and plane brichang
2022-08-26 22:50 ` [PATCH 32/33] drm/amd/display: Fix black flash when switching from ODM2to1 to ODMBypass brichang
2022-08-26 22:50 ` [PATCH 33/33] drm/amd/display: Correct cursor position on horizontal mirror brichang
-- strict thread matches above, loose matches on Subject: below --
2022-08-26 22:26 [PATCH 00/33] DC Patches August 27 ,2022 brichang
2022-08-26 22:27 ` [PATCH 11/33] drm/amd/display: Add DC debug option to force LTTPR mode brichang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220826225053.1435588-12-Brian.Chang@amd.com \
--to=brian.chang@amd.com \
--cc=Aurabindo.Pillai@amd.com \
--cc=Bhawanpreet.Lakha@amd.com \
--cc=George.Shen@amd.com \
--cc=Harry.Wentland@amd.com \
--cc=Rodrigo.Siqueira@amd.com \
--cc=Sunpeng.Li@amd.com \
--cc=agustin.gutierrez@amd.com \
--cc=amd-gfx@lists.freedesktop.org \
--cc=michael.strauss@amd.com \
--cc=pavle.kotarac@amd.com \
--cc=qingqing.zhuo@amd.com \
--cc=roman.li@amd.com \
--cc=solomon.chiu@amd.com \
--cc=stylon.wang@amd.com \
--cc=wayne.lin@amd.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox