This is a note to let you know that I've just added the patch titled
drm/amd/display: Update PMFW z-state interface for DCN314
to the 6.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amd-display-update-pmfw-z-state-interface-for-dcn314.patch
and it can be found in the queue-6.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 4f5bdde386d3b8e9317df5562950e1b4fa177599 Mon Sep 17 00:00:00 2001
From: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>
Date: Fri, 9 Sep 2022 15:24:55 -0400
Subject: drm/amd/display: Update PMFW z-state interface for DCN314
From: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>
commit 4f5bdde386d3b8e9317df5562950e1b4fa177599 upstream.
[Why]
Request from PMFW to change the messaging format to specify whether we
support z-state via individual bits.
[How]
Update the args we pass in the support message.
Fixes: d5c6909e7460 ("drm/amd/display: Add DCN314 clock manager")
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Reviewed-by: Charlene Liu <Charlene.Liu@xxxxxxx>
Reviewed-by: Mario Limonciello <mario.limonciello@xxxxxxx>
Acked-by: Qingqing Zhuo <qingqing.zhuo@xxxxxxx>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx # 6.0
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn314/dcn314_smu.c | 11 +++--------
drivers/gpu/drm/amd/display/dc/dcn314/dcn314_resource.c | 3 ++-
2 files changed, 5 insertions(+), 9 deletions(-)
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn314/dcn314_smu.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn314/dcn314_smu.c
@@ -339,29 +339,24 @@ void dcn314_smu_set_zstate_support(struc
if (!clk_mgr->smu_present)
return;
- if (!clk_mgr->base.ctx->dc->debug.enable_z9_disable_interface &&
- (support == DCN_ZSTATE_SUPPORT_ALLOW_Z10_ONLY))
- support = DCN_ZSTATE_SUPPORT_DISALLOW;
-
-
// Arg[15:0] = 8/9/0 for Z8/Z9/disallow -> existing bits
// Arg[16] = Disallow Z9 -> new bit
switch (support) {
case DCN_ZSTATE_SUPPORT_ALLOW:
msg_id = VBIOSSMC_MSG_AllowZstatesEntry;
- param = 9;
+ param = (1 << 10) | (1 << 9) | (1 << 8);
break;
case DCN_ZSTATE_SUPPORT_DISALLOW:
msg_id = VBIOSSMC_MSG_AllowZstatesEntry;
- param = 8;
+ param = 0;
break;
case DCN_ZSTATE_SUPPORT_ALLOW_Z10_ONLY:
msg_id = VBIOSSMC_MSG_AllowZstatesEntry;
- param = 0x00010008;
+ param = (1 << 10);
break;
default: //DCN_ZSTATE_SUPPORT_UNKNOWN
--- a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_resource.c
@@ -881,7 +881,8 @@ static const struct dc_plane_cap plane_c
};
static const struct dc_debug_options debug_defaults_drv = {
- .disable_z10 = true, /*hw not support it*/
+ .disable_z10 = false,
+ .enable_z9_disable_interface = true,
.disable_dmcu = true,
.force_abm_enable = false,
.timing_trace = false,
Patches currently in stable-queue which might be from nicholas.kazlauskas@xxxxxxx are
queue-6.0/drm-amd-display-update-pmfw-z-state-interface-for-dcn314.patch
