From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Ian Chen <ian.chen@amd.com>,
Iswara.Nagulendran@amd.com, wenjing.liu@amd.com,
dri-devel@lists.freedesktop.org, airlied@gmail.com,
Jimmy.Kizito@amd.com, Sasha Levin <sashal@kernel.org>,
sungkim@amd.com, Rodrigo.Siqueira@amd.com,
amd-gfx@lists.freedesktop.org, michael.strauss@amd.com,
George.Shen@amd.com, harry.wentland@amd.com, HaoPing.Liu@amd.com,
arnd@arndb.de, Evgenii.Krasnikov@amd.com, sunpeng.li@amd.com,
Jasdeep Dhillon <jdhillon@amd.com>,
dingchen.zhang@amd.com, Xinhui.Pan@amd.com, daniel@ffwll.ch,
Wayne Lin <Wayne.Lin@amd.com>,
Alex Deucher <alexander.deucher@amd.com>,
christian.koenig@amd.com
Subject: [PATCH AUTOSEL 6.2 04/60] drm/amd/display: Revert Reduce delay when sink device not able to ACK 00340h write
Date: Sun, 26 Feb 2023 20:59:49 -0500 [thread overview]
Message-ID: <20230227020045.1045105-4-sashal@kernel.org> (raw)
In-Reply-To: <20230227020045.1045105-1-sashal@kernel.org>
From: Ian Chen <ian.chen@amd.com>
[ Upstream commit 639f6ad6df7f47db48b59956b469a6917a136afb ]
[WHY]
It causes regression AMD source will not write DPCD 340.
Reviewed-by: Wayne Lin <Wayne.Lin@amd.com>
Acked-by: Jasdeep Dhillon <jdhillon@amd.com>
Signed-off-by: Ian Chen <ian.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/display/dc/core/dc_link.c | 6 ------
drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 14 +++-----------
drivers/gpu/drm/amd/display/dc/dc_dp_types.h | 1 -
3 files changed, 3 insertions(+), 18 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 c88f044666fee..754fc86341494 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -1916,12 +1916,6 @@ struct dc_link *link_create(const struct link_init_data *init_params)
if (false == dc_link_construct(link, init_params))
goto construct_fail;
- /*
- * Must use preferred_link_setting, not reported_link_cap or verified_link_cap,
- * since struct preferred_link_setting won't be reset after S3.
- */
- link->preferred_link_setting.dpcd_source_device_specific_field_support = true;
-
return link;
construct_fail:
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 dedd1246ce588..475ad3eed002d 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
@@ -6554,18 +6554,10 @@ void dpcd_set_source_specific_data(struct dc_link *link)
uint8_t hblank_size = (uint8_t)link->dc->caps.min_horizontal_blanking_period;
- if (link->preferred_link_setting.dpcd_source_device_specific_field_support) {
- result_write_min_hblank = core_link_write_dpcd(link,
- DP_SOURCE_MINIMUM_HBLANK_SUPPORTED, (uint8_t *)(&hblank_size),
- sizeof(hblank_size));
-
- if (result_write_min_hblank == DC_ERROR_UNEXPECTED)
- link->preferred_link_setting.dpcd_source_device_specific_field_support = false;
- } else {
- DC_LOG_DC("Sink device does not support 00340h DPCD write. Skipping on purpose.\n");
- }
+ result_write_min_hblank = core_link_write_dpcd(link,
+ DP_SOURCE_MINIMUM_HBLANK_SUPPORTED, (uint8_t *)(&hblank_size),
+ sizeof(hblank_size));
}
-
DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION,
WPP_BIT_FLAG_DC_DETECTION_DP_CAPS,
"result=%u link_index=%u enum dce_version=%d DPCD=0x%04X min_hblank=%u branch_dev_id=0x%x branch_dev_name='%c%c%c%c%c%c'",
diff --git a/drivers/gpu/drm/amd/display/dc/dc_dp_types.h b/drivers/gpu/drm/amd/display/dc/dc_dp_types.h
index 2c54b6e0498bf..296793d8b2bf2 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_dp_types.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_dp_types.h
@@ -149,7 +149,6 @@ struct dc_link_settings {
enum dc_link_spread link_spread;
bool use_link_rate_set;
uint8_t link_rate_set;
- bool dpcd_source_device_specific_field_support;
};
union dc_dp_ffe_preset {
--
2.39.0
next prev parent reply other threads:[~2023-02-27 2:01 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20230227020045.1045105-1-sashal@kernel.org>
2023-02-27 1:59 ` [PATCH AUTOSEL 6.2 03/60] drm/amd/display: Reduce expected sdp bandwidth for dcn321 Sasha Levin
2023-02-27 1:59 ` Sasha Levin [this message]
2023-02-27 1:59 ` [PATCH AUTOSEL 6.2 05/60] drm/amd/display: Fix potential null-deref in dm_resume Sasha Levin
2023-02-27 1:59 ` [PATCH AUTOSEL 6.2 09/60] drm/amd/display: Defer DIG FIFO disable after VID stream enable Sasha Levin
2023-02-27 1:59 ` [PATCH AUTOSEL 6.2 10/60] drm/radeon: free iio for atombios when driver shutdown Sasha Levin
2023-02-27 1:59 ` [PATCH AUTOSEL 6.2 11/60] drm/amd: Avoid BUG() for case of SRIOV missing IP version Sasha Levin
2023-02-27 1:59 ` [PATCH AUTOSEL 6.2 12/60] drm/amdkfd: Page aligned memory reserve size Sasha Levin
2023-02-27 2:00 ` [PATCH AUTOSEL 6.2 15/60] drm/amd: Avoid ASSERT for some message failures Sasha Levin
2023-02-27 2:00 ` [PATCH AUTOSEL 6.2 16/60] drm: amd: display: Fix memory leakage Sasha Levin
2023-02-27 2:00 ` [PATCH AUTOSEL 6.2 17/60] drm/amd/display: fix mapping to non-allocated address Sasha Levin
2023-02-27 2:00 ` [PATCH AUTOSEL 6.2 28/60] drm/amd/display: Set hvm_enabled flag for S/G mode Sasha Levin
2023-02-27 2:00 ` [PATCH AUTOSEL 6.2 38/60] Revert "drm/amdgpu: TA unload messages are not actually sent to psp when amdgpu is uninstalled" Sasha Levin
2023-02-27 2:00 ` [PATCH AUTOSEL 6.2 39/60] drm/amd/display: fix FCLK pstate change underflow Sasha Levin
2023-02-27 2:00 ` [PATCH AUTOSEL 6.2 45/60] drm/amd/display: Do not set DRR on pipe commit Sasha Levin
2023-02-27 2:00 ` [PATCH AUTOSEL 6.2 46/60] drm/amd/display: Do not commit pipe when updating DRR Sasha Levin
2023-02-27 2:00 ` [PATCH AUTOSEL 6.2 50/60] drm/amd/display: Move DCN314 DOMAIN power control to DMCUB Sasha Levin
2023-02-27 2:00 ` [PATCH AUTOSEL 6.2 51/60] drm/amd/display: Enable P-state validation checks for DCN314 Sasha Levin
2023-02-27 2:00 ` [PATCH AUTOSEL 6.2 53/60] drm/amd/display: Disable HUBP/DPP PG on DCN314 for now Sasha Levin
2023-02-27 2:00 ` [PATCH AUTOSEL 6.2 54/60] drm/amd/display: disable SubVP + DRR to prevent underflow Sasha Levin
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