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drm/amd/display: add plane shaper TF support

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Enable usage of predefined transfer func in addition to shaper 1D LUT.
That means we can save some complexity by just setting a predefined
curve, instead of programming a custom curve when preparing color space
for applying 3D LUT.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Melissa Wen <mwen@igalia.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Melissa Wen 2023-11-16 18:58:04 -01:00 committed by Alex Deucher
parent aba8b76baa
commit 99de686115
1 changed files with 11 additions and 4 deletions
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15
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c
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@ -624,20 +624,23 @@ amdgpu_tf_to_dc_tf(enum amdgpu_transfer_function tf)
}
static int amdgpu_dm_atomic_shaper_lut(const struct drm_color_lut *shaper_lut,
bool has_rom,
enum dc_transfer_func_predefined tf,
uint32_t shaper_size,
struct dc_transfer_func *func_shaper)
{
int ret = 0;
if (shaper_size) {
if (shaper_size || tf != TRANSFER_FUNCTION_LINEAR) {
/*
* If user shaper LUT is set, we assume a linear color space
* (linearized by degamma 1D LUT or not).
*/
func_shaper->type = TF_TYPE_DISTRIBUTED_POINTS;
func_shaper->tf = TRANSFER_FUNCTION_LINEAR;
func_shaper->tf = tf;
func_shaper->sdr_ref_white_level = SDR_WHITE_LEVEL_INIT_VALUE;
ret = __set_output_tf(func_shaper, shaper_lut, shaper_size, false);
ret = __set_output_tf(func_shaper, shaper_lut, shaper_size, has_rom);
} else {
func_shaper->type = TF_TYPE_BYPASS;
func_shaper->tf = TRANSFER_FUNCTION_LINEAR;
@ -972,6 +975,7 @@ amdgpu_dm_plane_set_color_properties(struct drm_plane_state *plane_state,
struct dc_plane_state *dc_plane_state)
{
struct dm_plane_state *dm_plane_state = to_dm_plane_state(plane_state);
enum amdgpu_transfer_function shaper_tf = AMDGPU_TRANSFER_FUNCTION_DEFAULT;
const struct drm_color_lut *shaper_lut;
uint32_t shaper_size;
int ret;
@ -980,8 +984,11 @@ amdgpu_dm_plane_set_color_properties(struct drm_plane_state *plane_state,
shaper_lut = __extract_blob_lut(dm_plane_state->shaper_lut, &shaper_size);
shaper_size = shaper_lut != NULL ? shaper_size : 0;
shaper_tf = dm_plane_state->shaper_tf;
ret = amdgpu_dm_atomic_shaper_lut(shaper_lut, shaper_size,
ret = amdgpu_dm_atomic_shaper_lut(shaper_lut, false,
amdgpu_tf_to_dc_tf(shaper_tf),
shaper_size,
dc_plane_state->in_shaper_func);
if (ret)
drm_dbg_kms(plane_state->plane->dev,