From 5dbf423fbb725197824eeb640458bc650b22948a Mon Sep 17 00:00:00 2001
From: Harry Wentland <harry.wentland@amd.com>
Date: Thu, 28 May 2020 09:44:44 -0400
Subject: Revert "drm/amd/display: disable dcn20 abm feature for bring up"
Git-commit: 14ed1c908a7a623cc0cbf0203f8201d1b7d31d16
Patch-mainline: v5.8-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322
This reverts commit 96cb7cf13d8530099c256c053648ad576588c387.
This change was used for DCN2 bringup and is no longer desired.
In fact it breaks backlight on DCN2 systems.
Cc: Alexander Monakov <amonakov@ispras.ru>
Cc: Hersen Wu <hersenxs.wu@amd.com>
Cc: Anthony Koo <Anthony.Koo@amd.com>
Cc: Michael Chiu <Michael.Chiu@amd.com>
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reported-and-tested-by: Alexander Monakov <amonakov@ispras.ru>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 11 ++++-------
1 file changed, 4 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index bdba0bfd6df1..7ced9f87be97 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -1356,7 +1356,7 @@ static int dm_late_init(void *handle)
unsigned int linear_lut[16];
int i;
struct dmcu *dmcu = NULL;
- bool ret = false;
+ bool ret;
if (!adev->dm.fw_dmcu)
return detect_mst_link_for_all_connectors(adev->ddev);
@@ -1377,13 +1377,10 @@ static int dm_late_init(void *handle)
*/
params.min_abm_backlight = 0x28F;
- /* todo will enable for navi10 */
- if (adev->asic_type <= CHIP_RAVEN) {
- ret = dmcu_load_iram(dmcu, params);
+ ret = dmcu_load_iram(dmcu, params);
- if (!ret)
- return -EINVAL;
- }
+ if (!ret)
+ return -EINVAL;
return detect_mst_link_for_all_connectors(adev->ddev);
}
--
2.28.0