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drm/amd/display: program default output gamma

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program default output gamma if no user specific gamma
parameters passed.

Signed-off-by: hersen wu <hersenxs.wu@amd.com>
Reviewed-by: Sun peng Li <Sunpeng.Li@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
hersen wu 2019-03-01 11:54:02 -05:00 committed by Alex Deucher
parent 5581192d72
commit 3ae42acde3
1 changed files with 28 additions and 23 deletions
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13
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c
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@ -126,18 +126,19 @@ int amdgpu_dm_set_regamma_lut(struct dm_crtc_state *crtc)
crtc->base.state->dev->dev_private;
struct drm_color_lut *lut;
uint32_t lut_size;
struct dc_gamma *gamma;
struct dc_gamma *gamma = NULL;
enum dc_transfer_func_type old_type = stream->out_transfer_func->type;
bool ret;
if (!blob) {
if (!blob && adev->asic_type <= CHIP_RAVEN) {
/* By default, use the SRGB predefined curve.*/
stream->out_transfer_func->type = TF_TYPE_PREDEFINED;
stream->out_transfer_func->tf = TRANSFER_FUNCTION_SRGB;
return 0;
}
if (blob) {
lut = (struct drm_color_lut *)blob->data;
lut_size = blob->length / sizeof(struct drm_color_lut);
@ -158,14 +159,18 @@ int amdgpu_dm_set_regamma_lut(struct dm_crtc_state *crtc)
/* Convert drm_lut into dc_gamma */
__drm_lut_to_dc_gamma(lut, gamma, gamma->type == GAMMA_RGB_256);
}
/* Call color module to translate into something DC understands. Namely
* a transfer function.
/* predefined gamma ROM only exist for RAVEN and pre-RAVEN ASIC,
* set canRomBeUsed accordingly
*/
stream->out_transfer_func->type = TF_TYPE_DISTRIBUTED_POINTS;
ret = mod_color_calculate_regamma_params(stream->out_transfer_func,
gamma, true, adev->asic_type <= CHIP_RAVEN, NULL);
if (gamma)
dc_gamma_release(&gamma);
if (!ret) {
stream->out_transfer_func->type = old_type;
DRM_ERROR("Out of memory when calculating regamma params\n");