The issue with panel power savings compatibility below
`AMDGPU_DM_DEFAULT_MIN_BACKLIGHT` happens at
`AMDGPU_DM_DEFAULT_MIN_BACKLIGHT` as well.
That issue will be fixed separately, so don't prevent the backlight
brightness from going that low.
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/amd-gfx/be04226a-a9e3-4a45-a83b-6d263c6557d8@t-8ch.de/T/#m400dee4e2fc61fe9470334d20a7c8c89c9aef44f
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
int spread = caps.max_input_signal - caps.min_input_signal;
if (caps.max_input_signal > AMDGPU_DM_DEFAULT_MAX_BACKLIGHT ||
- caps.min_input_signal < AMDGPU_DM_DEFAULT_MIN_BACKLIGHT ||
+ caps.min_input_signal < 0 ||
spread > AMDGPU_DM_DEFAULT_MAX_BACKLIGHT ||
spread < AMDGPU_DM_MIN_SPREAD) {
DRM_DEBUG_KMS("DM: Invalid backlight caps: min=%d, max=%d\n",