git.ipfire.org Git - thirdparty/kernel/stable-queue.git/blob

   1 From bf552083916a7f8800477b5986940d1c9a31b953 Mon Sep 17 00:00:00 2001
   2 From: hongao <hongao@uniontech.com>
   3 Date: Thu, 11 Nov 2021 11:32:07 +0800
   4 Subject: drm/amdgpu: fix set scaling mode Full/Full aspect/Center not works on vga and dvi connectors
   5
   6 From: hongao <hongao@uniontech.com>
   7
   8 commit bf552083916a7f8800477b5986940d1c9a31b953 upstream.
   9
  10 amdgpu_connector_vga_get_modes missed function amdgpu_get_native_mode
  11 which assign amdgpu_encoder->native_mode with *preferred_mode result in
  12 amdgpu_encoder->native_mode.clock always be 0. That will cause
  13 amdgpu_connector_set_property returned early on:
  14 if ((rmx_type != DRM_MODE_SCALE_NONE) &&
  15         (amdgpu_encoder->native_mode.clock == 0))
  16 when we try to set scaling mode Full/Full aspect/Center.
  17 Add the missing function to amdgpu_connector_vga_get_mode can fix this.
  18 It also works on dvi connectors because
  19 amdgpu_connector_dvi_helper_funcs.get_mode use the same method.
  20
  21 Signed-off-by: hongao <hongao@uniontech.com>
  22 Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
  23 Cc: stable@vger.kernel.org
  24 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  25 ---
  26  drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c |    1 +
  27  1 file changed, 1 insertion(+)
  28
  29 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
  30 +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
  31 @@ -829,6 +829,7 @@ static int amdgpu_connector_vga_get_mode
  32
  33         amdgpu_connector_get_edid(connector);
  34         ret = amdgpu_connector_ddc_get_modes(connector);
  35 +       amdgpu_get_native_mode(connector);
  36
  37         return ret;
  38  }