diff options
| author | Tony Tascioglu <tony.tascioglu@amd.com> | 2022-11-25 17:31:44 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-01-17 15:39:39 -0500 |
| commit | 3351ce5d8cad587b37a2289ce96153e3873110fb (patch) | |
| tree | 2efc41b02a357523f14eeebcb1543957867cf2fa /drivers/gpu/drm/amd/display/dc/dc_link.h | |
| parent | 762e8febab9db16fb7b3bc7f07fe27f6f544325a (diff) | |
drm/amd/display: Optimize link power-down when link powered externally
[Why]
When an eDP panel is powered externally by a different GPU, we don't need
to wait for hardware sequencing delays when powering down a link, as the
display is not dependent on the GPU being powered down.
[How]
This commit adds a variable 'link_powered_externally' to indicate when a
link is being powered by another GPU.
Tested-by: Daniel Wheeler <Daniel.Wheeler@amd.com>
Reviewed-by: Felipe Clark <felipe.clark@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Tony Tascioglu <tony.tascioglu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dc_link.h')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc_link.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h index 63fe60dd3ea3..48f6a5b09336 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_link.h +++ b/drivers/gpu/drm/amd/display/dc/dc_link.h @@ -294,6 +294,8 @@ struct dc_link { struct gpio *hpd_gpio; enum dc_link_fec_state fec_state; + bool link_powered_externally; // Used to bypass hardware sequencing delays when panel is powered down forcibly + struct dc_panel_config panel_config; struct phy_state phy_state; }; |