From: Fangzhi Zuo <jerry.zuo@amd.com>
To: <amd-gfx@lists.freedesktop.org>
Cc: Harry Wentland <harry.wentland@amd.com>,
Leo Li <sunpeng.li@amd.com>,
Aurabindo Pillai <aurabindo.pillai@amd.com>,
Roman Li <roman.li@amd.com>, Wayne Lin <wayne.lin@amd.com>,
Tom Chung <chiahsuan.chung@amd.com>,
"Fangzhi Zuo" <jerry.zuo@amd.com>,
Dan Wheeler <daniel.wheeler@amd.com>, Ray Wu <Ray.Wu@amd.com>,
Ivan Lipski <ivan.lipski@amd.com>, Alex Hung <alex.hung@amd.com>,
James Lin <PingLei.Lin@amd.com>,
Chenyu Chen <Chen-Yu.Chen@amd.com>,
Nicholas Carbones <Nicholas.Carbones@amd.com>,
"Dillon Varone" <dillon.varone@amd.com>
Subject: [PATCH 21/49] drm/amd/display: Correct vblank_end calc for fams cmd packet
Date: Thu, 23 Jul 2026 16:13:29 -0400 [thread overview]
Message-ID: <20260723201908.373300-22-jerry.zuo@amd.com> (raw)
In-Reply-To: <20260723201908.373300-1-jerry.zuo@amd.com>
From: Nicholas Carbones <Nicholas.Carbones@amd.com>
[Why]
By changing how we populate vblank_nom, constraining vblank size, the
vblank_end calculation for the fams command packet gets affected. We add
up v_active with a new vblank_nom value for stream pstate's nom_vtotal,
which describes the vtotal and nominal refresh rate, and that causes
underflow.
[How]
Set nom_vtotal equal to the timing's v_total.
Reviewed-by: Dillon Varone <dillon.varone@amd.com>
Signed-off-by: Nicholas Carbones <Nicholas.Carbones@amd.com>
Signed-off-by: Fangzhi Zuo <jerry.zuo@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
---
.../display/dc/dml2_0/dml21/src/dml2_pmo/dml2_pmo_dcn4_fams2.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dml2_0/dml21/src/dml2_pmo/dml2_pmo_dcn4_fams2.c b/drivers/gpu/drm/amd/display/dc/dml2_0/dml21/src/dml2_pmo/dml2_pmo_dcn4_fams2.c
index d5f20c85006e..8f481ef9316f 100644
--- a/drivers/gpu/drm/amd/display/dc/dml2_0/dml21/src/dml2_pmo/dml2_pmo_dcn4_fams2.c
+++ b/drivers/gpu/drm/amd/display/dc/dml2_0/dml21/src/dml2_pmo/dml2_pmo_dcn4_fams2.c
@@ -1710,7 +1710,7 @@ static void build_pstate_meta_per_stream(struct dml2_pmo_instance *pmo,
/* common */
stream_pstate_meta->valid = true;
stream_pstate_meta->otg_vline_time_us = (double)timing->h_total / timing->pixel_clock_khz * 1000.0;
- stream_pstate_meta->nom_vtotal = stream_descriptor->timing.vblank_nom + stream_descriptor->timing.v_active;
+ stream_pstate_meta->nom_vtotal = stream_descriptor->timing.v_total;
stream_pstate_meta->nom_refresh_rate_hz = timing->pixel_clock_khz * 1000.0 /
(stream_pstate_meta->nom_vtotal * timing->h_total);
stream_pstate_meta->nom_frame_time_us =
--
2.53.0
next prev parent reply other threads:[~2026-07-23 20:19 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-23 20:13 [PATCH 00/49] DC Patches July 20th, 2026 Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 01/49] drm/amd/display: share common DM KUnit helpers Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 02/49] drm/amd/display: Port DCN4+ MCIF ARB programming to new format Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 03/49] drm/amd/display: Fix force FRL rate debug setting Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 04/49] drm/amd/display: Add KUnit tests for link_lock and psp SRM helpers Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 05/49] drm/amd/display: Add KUnit tests for HDCP display helpers Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 06/49] drm/amd/display: Add KUnit tests for event_callback Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 07/49] drm/amd/display: Add KUnit tests for event_property_validate Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 08/49] drm/amd/display: Add KUnit tests for watchdog and cpirq events Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 09/49] drm/amd/display: Add KUnit tests for hdcp_destroy Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 10/49] drm/amd/display: Add AV mute wait frames to dce110_set_avmute Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 11/49] drm/amd/display: revert "convert dcn42 GPIO translation to lookup tables" Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 12/49] drm/amd/display: move scaling helper to connector Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 13/49] drm/amd/display: move stutter quirk to quirks file Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 14/49] drm/amd/display: move watermarks table to pp_smu Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 15/49] drm/amd/display: move GPU mem helpers to services Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 16/49] drm/amd/display: add FreeSync/VRR module Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 17/49] drm/amd/display: add cursor module Fangzhi Zuo
2026-08-03 12:48 ` Timur Kristóf
2026-07-23 20:13 ` [PATCH 18/49] drm/amd/display: add KUnit tests for audio component get_eld Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 19/49] drm/amd/display: add KUnit tests for audio commit path Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 20/49] drm/amd/display: Use current mpc pipe in set output transfer func Fangzhi Zuo
2026-07-23 20:13 ` Fangzhi Zuo [this message]
2026-07-23 20:13 ` [PATCH 22/49] drm/amd/display: Add KUnit test for native backlight registration Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 23/49] drm/amd/display: Add color transfer-function tests Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 24/49] drm/amd/display: Add atomic " Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 25/49] drm/amd/display: Add CRTC and plane degamma tests Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 26/49] drm/amd/display: Add legacy plane LUT tests Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 27/49] drm/amd/display: Add truncated colorop tests Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 28/49] drm/amd/display: Add colorop LUT programming tests Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 29/49] drm/amd/display: Add KUnit tests for enable_assr Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 30/49] drm/amd/display: Add KUnit tests for update_config Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 31/49] drm/amd/display: Add KUnit tests for hdcp_create_workqueue Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 32/49] drm/amd/display: Add KUnit tests for srm_data_write and srm_data_read Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 33/49] drm/amd/display: Add KUnit tests for HDCP DDC link adapters Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 34/49] drm/amd/display: Add initialized-branch test for psp_set_srm Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 35/49] drm/amd/display: Add deeper event_property_update tests Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 36/49] drm/amd/display: adjust floating point format for gamut remap when needed Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 37/49] drm/amd/display: Reintroduce "convert dcn42 GPIO translation to lookup tables" Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 38/49] drm/amd/display: Prune per-tile Timing from Apple Studio Display Primary Tile Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 39/49] drm/amd/display: Add get replay residency function Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 40/49] drm/amd/display: Fix divide-by-zero in calculate_mcache_setting on zero viewport Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 41/49] drm/amd/display: check if dml21_add_phantom_plane() is successful Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 42/49] drm/amd/display: change dcc_rate from 1 to 2 for log use only Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 43/49] drm/amd/display: enforce UCLK pstate support in mode_support Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 44/49] drm/amd/display: add DalForceMaxDisplayClock debug option to DML2 Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 45/49] drm/amd/display: Fixes for dcn42b_soc_bb.h Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 46/49] drm/amd/display: Fix rounding errors in CalculatePrefetchSchedule Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 47/49] drm/amd/display: plumb PMO per-plane pstate methods into mode_support Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 48/49] drm/amd/display: dispatch compressed FRL cap check inside dml1_frl_cap_chk_inter Fangzhi Zuo
2026-07-23 20:13 ` [PATCH 49/49] drm/amd/display: Promote DC to 3.2.391 Fangzhi Zuo
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