drm/amd/display: program default output gamma (3ae42acd) · Commits · 戴 / test

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c

+29 −24

Original line number	Diff line number	Diff line
		@@ -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");