diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/4028-drm-amd-display-Don-t-program-bypass-on-linear-regam.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/4028-drm-amd-display-Don-t-program-bypass-on-linear-regam.patch | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/4028-drm-amd-display-Don-t-program-bypass-on-linear-regam.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/4028-drm-amd-display-Don-t-program-bypass-on-linear-regam.patch new file mode 100644 index 00000000..8286371c --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/4028-drm-amd-display-Don-t-program-bypass-on-linear-regam.patch @@ -0,0 +1,41 @@ +From 3da77c0045e332d9917a3f6a4072b0b60341cb2b Mon Sep 17 00:00:00 2001 +From: Harry Wentland <harry.wentland@amd.com> +Date: Thu, 12 Apr 2018 16:37:09 -0400 +Subject: [PATCH 4028/4131] drm/amd/display: Don't program bypass on linear + regamma LUT + +Even though this is required for degamma since DCE HW only supports a +couple predefined LUTs we can just program the LUT directly for regamma. + +This fixes dark screens which occurs when we program regamma to bypass +while degamma is using srgb LUT. + +Signed-off-by: Harry Wentland <harry.wentland@amd.com> +Reviewed-by: Leo Li <sunpeng.li@amd.com> +Cc: stable@vger.kernel.org +Acked-by: Alex Deucher <alexander.deucher@amd.com> +--- + drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c | 7 ------- + 1 file changed, 7 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 ef5fad8..e3d90e9 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 +@@ -139,13 +139,6 @@ int amdgpu_dm_set_regamma_lut(struct dm_crtc_state *crtc) + lut = (struct drm_color_lut *)blob->data; + lut_size = blob->length / sizeof(struct drm_color_lut); + +- if (__is_lut_linear(lut, lut_size)) { +- /* Set to bypass if lut is set to linear */ +- stream->out_transfer_func->type = TF_TYPE_BYPASS; +- stream->out_transfer_func->tf = TRANSFER_FUNCTION_LINEAR; +- return 0; +- } +- + gamma = dc_create_gamma(); + if (!gamma) + return -ENOMEM; +-- +2.7.4 + |