diff options
| author | Mario Limonciello <mario.limonciello@amd.com> | 2024-06-07 01:02:28 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-06-14 16:17:11 -0400 |
| commit | 2fe87f54abdc5c29bd2ebc301964926ea27b3d89 (patch) | |
| tree | 3e3b9f918c8c2e79ddad6aa7ff3662bafac4657f /drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | |
| parent | ee3942d9ab1f79637b260cefafe6a1ddfdd6ed00 (diff) | |
drm/amd/display: Set default brightness according to ACPI
Currently, amdgpu will always set up the brightness at 100% when it
loads. However this is jarring when the BIOS has it previously
programmed to a much lower value.
The ACPI ATIF method includes two members for "ac_level" and "dc_level".
These represent the default values that should be used if the system is
brought up in AC and DC respectively.
Use these values to set up the default brightness when the backlight
device is registered.
v2: squash in ACPI fix
Reviewed-by: Leo Li <sunpeng.li@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c index 7099ff9cf8c5..f85ace0384d2 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c @@ -383,6 +383,8 @@ static int amdgpu_atif_query_backlight_caps(struct amdgpu_atif *atif) characteristics.min_input_signal; atif->backlight_caps.max_input_signal = characteristics.max_input_signal; + atif->backlight_caps.ac_level = characteristics.ac_level; + atif->backlight_caps.dc_level = characteristics.dc_level; out: kfree(info); return err; @@ -1268,6 +1270,8 @@ void amdgpu_acpi_get_backlight_caps(struct amdgpu_dm_backlight_caps *caps) caps->caps_valid = atif->backlight_caps.caps_valid; caps->min_input_signal = atif->backlight_caps.min_input_signal; caps->max_input_signal = atif->backlight_caps.max_input_signal; + caps->ac_level = atif->backlight_caps.ac_level; + caps->dc_level = atif->backlight_caps.dc_level; } /** |