[PATCH] drm/amd/display: Fix AMDGPU_MAX_BL_LEVEL value

[Mario Limonciello]

commit 16dc8bc27c2aa ("drm/amd/display: Export full brightness range to
userspace") adjusted the brightness range to scale to larger values, but
missed updating AMDGPU_MAX_BL_LEVEL which is needed to make sure that
scaling works properly with custom brightness curves.

Fixes: 16dc8bc27c2aa ("drm/amd/display: Export full brightness range to 
userspace")
Signed-off-by: Mario Limonciello <mario.limoncie...@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
index 6da4f946cac0..004450cc41c0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
@@ -435,7 +435,7 @@ struct amdgpu_mode_info {
        struct drm_property *regamma_tf_property;
 };
 
-#define AMDGPU_MAX_BL_LEVEL 0xFF
+#define AMDGPU_MAX_BL_LEVEL 0xFFFF
 
 struct amdgpu_backlight_privdata {
        struct amdgpu_encoder *encoder;
-- 
2.49.0