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| author | Joshua Ashton <joshua@froggi.es> | 2023-11-16 22:57:48 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-12-13 23:09:55 +0300 |
| commit | ec7b2a55463ea50401a8146793b61ee590255a45 (patch) | |
| tree | 1e2b9b3243fa8cbf3004f437b82e334509e978fc /drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h | |
| parent | e4cddd51bfab2a40529a4af35bd2c912b5a0c239 (diff) | |
| download | linux-ec7b2a55463ea50401a8146793b61ee590255a45.tar.xz | |
drm/amd/display: add plane HDR multiplier driver-specific property
Multiplier to 'gain' the plane. When PQ is decoded using the fixed func
transfer function to the internal FP16 fb, 1.0 -> 80 nits (on AMD at
least) When sRGB is decoded, 1.0 -> 1.0. Therefore, 1.0 multiplier = 80
nits for SDR content. So if you want, 203 nits for SDR content, pass in
(203.0 / 80.0).
v4:
- comment about the PQ TF need for L-to-NL (from Harry's review)
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Joshua Ashton <joshua@froggi.es>
Co-developed-by: Melissa Wen <mwen@igalia.com>
Signed-off-by: Melissa Wen <mwen@igalia.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h index a1b7ae5c2149..218623e1b9aa 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h @@ -360,6 +360,10 @@ struct amdgpu_mode_info { * to go from scanout/encoded values to linear values. */ struct drm_property *plane_degamma_tf_property; + /** + * @plane_hdr_mult_property: + */ + struct drm_property *plane_hdr_mult_property; }; #define AMDGPU_MAX_BL_LEVEL 0xFF |