On 11/22/23 17:45, Pillai, Aurabindo wrote:
[AMD Official Use Only - General]
Does amdgpu_dm_connector_funcs_reset() get called on wakeup from suspend
According to my research/testing drm_connector's rest() callback only
gets called when the connector gets created.
? Users would want the system to have the same brightness level before
suspending.
--
Regards,
Jay
------------------------------------------------------------------------
*From:* Mahfooz, Hamza <Hamza.Mahfooz@xxxxxxx>
*Sent:* Wednesday, November 22, 2023 5:24 PM
*To:* amd-gfx@xxxxxxxxxxxxxxxxxxxxx <amd-gfx@xxxxxxxxxxxxxxxxxxxxx>
*Cc:* Wentland, Harry <Harry.Wentland@xxxxxxx>; Li, Sun peng (Leo)
<Sunpeng.Li@xxxxxxx>; Siqueira, Rodrigo <Rodrigo.Siqueira@xxxxxxx>;
Koenig, Christian <Christian.Koenig@xxxxxxx>; Hung, Alex
<Alex.Hung@xxxxxxx>; Pillai, Aurabindo <Aurabindo.Pillai@xxxxxxx>; Wu,
Hersen <hersenxs.wu@xxxxxxx>; Lin, Wayne <Wayne.Lin@xxxxxxx>; Mahfooz,
Hamza <Hamza.Mahfooz@xxxxxxx>
*Subject:* [PATCH] drm/amd/display: fix ABM disablement
On recent versions of DMUB firmware, if we want to completely disable
ABM we have to pass ABM_LEVEL_IMMEDIATE_DISABLE as the requested ABM
level to DMUB. Otherwise, LCD eDP displays are unable to reach their
maximum brightness levels. So, to fix this whenever the user requests an
ABM level of 0 pass ABM_LEVEL_IMMEDIATE_DISABLE to DMUB instead. Also,
to keep the user's experience consistent map ABM_LEVEL_IMMEDIATE_DISABLE
to 0 when a user tries to read the requested ABM level.
Signed-off-by: Hamza Mahfooz <hamza.mahfooz@xxxxxxx>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 8 +++++---
1 file changed, 5 insertions(+), 3 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 5d9496db0ecb..8cb92d941cd9 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -6230,7 +6230,7 @@ int amdgpu_dm_connector_atomic_set_property(struct
drm_connector *connector,
dm_new_state->underscan_enable = val;
ret = 0;
} else if (property == adev->mode_info.abm_level_property) {
- dm_new_state->abm_level = val;
+ dm_new_state->abm_level = val ?:
ABM_LEVEL_IMMEDIATE_DISABLE;
ret = 0;
}
@@ -6275,7 +6275,8 @@ int amdgpu_dm_connector_atomic_get_property(struct
drm_connector *connector,
*val = dm_state->underscan_enable;
ret = 0;
} else if (property == adev->mode_info.abm_level_property) {
- *val = dm_state->abm_level;
+ *val = (dm_state->abm_level !=
ABM_LEVEL_IMMEDIATE_DISABLE) ?
+ dm_state->abm_level : 0;
ret = 0;
}
@@ -6348,7 +6349,8 @@ void amdgpu_dm_connector_funcs_reset(struct
drm_connector *connector)
state->pbn = 0;
if (connector->connector_type == DRM_MODE_CONNECTOR_eDP)
- state->abm_level = amdgpu_dm_abm_level;
+ state->abm_level = amdgpu_dm_abm_level ?:
+ ABM_LEVEL_IMMEDIATE_DISABLE;
__drm_atomic_helper_connector_reset(connector,
&state->base);
}
--
2.42.1
--
Hamza
