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| author |   Koba Ko <koba.ko@canonical.com> | 2020-09-22 14:53:13 +0800 |
|---|---|---|
| committer |   Lyude Paul <lyude@redhat.com> | 2020-09-22 14:06:20 -0400 |
| commit | ad44c03208e46b83e4ae3269e32c9e524aa71cf8 (patch) | |
| tree | 730e4d917be461d349906e4daac67bf65217f71c /drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | |
| parent | vga_switcheroo: simplify the return expression of vga_switcheroo_runtime_resume (diff) | |
| download | wireguard-linux-ad44c03208e46b83e4ae3269e32c9e524aa71cf8.tar.xz wireguard-linux-ad44c03208e46b83e4ae3269e32c9e524aa71cf8.zip | |
drm/dp_mst: Retrieve extended DPCD caps for topology manager
As per DP-1.3, First check DP_EXTENDED_RECEIVER_CAP_FIELD_PRESENT.
If DP_EXTENDED_RECEIVER_CAP_FIELD_PRESENT is 1,read the DP_DP13_DPCD_REV to
get the faster capability.
If DP_EXTENDED_RECEIVER_CAP_FIELD_PRESENT is 0,read DP_DPCD_REV.
Signed-off-by: Koba Ko <koba.ko@canonical.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
[added aux name to drm_dbg_kms() call]
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200922065313.4794-1-koba.ko@canonical.com
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_object.c')
0 files changed, 0 insertions, 0 deletions