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/dce110/dce110_hw_sequencer.c | |
| 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/dce110/dce110_hw_sequencer.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c index 94be3ffcdea0..ef5afd2a5cf7 100644 --- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c @@ -875,14 +875,16 @@ void dce110_edp_power_control( if (ctx->dc->ctx->dmub_srv && ctx->dc->debug.dmub_command_table) { - if (cntl.action == TRANSMITTER_CONTROL_POWER_ON) + + if (cntl.action == TRANSMITTER_CONTROL_POWER_ON) { bp_result = ctx->dc_bios->funcs->enable_lvtma_control(ctx->dc_bios, LVTMA_CONTROL_POWER_ON, - panel_instance); - else + panel_instance, link->link_powered_externally); + } else { bp_result = ctx->dc_bios->funcs->enable_lvtma_control(ctx->dc_bios, LVTMA_CONTROL_POWER_OFF, - panel_instance); + panel_instance, link->link_powered_externally); + } } bp_result = link_transmitter_control(ctx->dc_bios, &cntl); @@ -1025,11 +1027,11 @@ void dce110_edp_backlight_control( if (cntl.action == TRANSMITTER_CONTROL_BACKLIGHT_ON) ctx->dc_bios->funcs->enable_lvtma_control(ctx->dc_bios, LVTMA_CONTROL_LCD_BLON, - panel_instance); + panel_instance, 0); else ctx->dc_bios->funcs->enable_lvtma_control(ctx->dc_bios, LVTMA_CONTROL_LCD_BLOFF, - panel_instance); + panel_instance, 0); } link_transmitter_control(ctx->dc_bios, &cntl); |