From 67446612703a9b4b2910760c7b1f288991718255 Mon Sep 17 00:00:00 2001 From: hersen wu Date: Fri, 1 Mar 2019 11:54:02 -0500 Subject: [PATCH 1695/2940] drm/amd/display: program default output gamma program default output gamma if no user specific gamma parameters passed. Change-Id: I909e6d145f8bdc49c405e8ca80839818a7c5d152 Signed-off-by: hersen wu Reviewed-by: Sun peng Li Acked-by: Bhawanpreet Lakha --- .../amd/display/amdgpu_dm/amdgpu_dm_color.c | 53 ++++++++++--------- 1 file changed, 29 insertions(+), 24 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c index 216e48cec716..7258c992a2bf 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c @@ -126,46 +126,51 @@ 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; } - lut = (struct drm_color_lut *)blob->data; - lut_size = blob->length / sizeof(struct drm_color_lut); - - gamma = dc_create_gamma(); - if (!gamma) - return -ENOMEM; + if (blob) { + lut = (struct drm_color_lut *)blob->data; + lut_size = blob->length / sizeof(struct drm_color_lut); + + gamma = dc_create_gamma(); + if (!gamma) + return -ENOMEM; + + gamma->num_entries = lut_size; + if (gamma->num_entries == MAX_COLOR_LEGACY_LUT_ENTRIES) + gamma->type = GAMMA_RGB_256; + else if (gamma->num_entries == MAX_COLOR_LUT_ENTRIES) + gamma->type = GAMMA_CS_TFM_1D; + else { + /* Invalid lut size */ + dc_gamma_release(&gamma); + return -EINVAL; + } - gamma->num_entries = lut_size; - if (gamma->num_entries == MAX_COLOR_LEGACY_LUT_ENTRIES) - gamma->type = GAMMA_RGB_256; - else if (gamma->num_entries == MAX_COLOR_LUT_ENTRIES) - gamma->type = GAMMA_CS_TFM_1D; - else { - /* Invalid lut size */ - dc_gamma_release(&gamma); - return -EINVAL; + /* Convert drm_lut into dc_gamma */ + __drm_lut_to_dc_gamma(lut, gamma, gamma->type == GAMMA_RGB_256); } - /* 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); - dc_gamma_release(&gamma); + 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"); -- 2.17.1