diff options
| author | Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> | 2024-06-21 23:11:28 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-08-28 00:53:51 +0300 |
| commit | 9793a4a6e5eb8764c7410c361984ed01722bab9f (patch) | |
| tree | 9fceadd214233770ae99f111d35c0cbfa9f3088a /drivers/gpu/drm/amd/display/dc/dc_dmub_srv.h | |
| parent | 4437936c6b696b98f3fe1d8679a2788c41b4df77 (diff) | |
| download | linux-9793a4a6e5eb8764c7410c361984ed01722bab9f.tar.xz | |
drm/amd/display: Notify DMCUB of D0/D3 state
[Why]
We want to avoid arming the HPD timer in firmware when preparing for
S0i3 entry when DC is considered in D3.
[How]
Notify DMCUB of the power state transitions so it can decide to arm
the HPD timer for idle in DCN35 only in D0.
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Ovidiu Bunea <Ovidiu.Bunea@amd.com>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dc_dmub_srv.h')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc_dmub_srv.h | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.h b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.h index 580940222777..42f0cb672d8b 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.h +++ b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.h @@ -109,7 +109,29 @@ bool dc_dmub_srv_is_hw_pwr_up(struct dc_dmub_srv *dc_dmub_srv, bool wait); void dc_dmub_srv_apply_idle_power_optimizations(const struct dc *dc, bool allow_idle); -void dc_dmub_srv_set_power_state(struct dc_dmub_srv *dc_dmub_srv, enum dc_acpi_cm_power_state powerState); +/** + * dc_dmub_srv_set_power_state() - Sets the power state for DMUB service. + * + * Controls whether messaging the DMCUB or interfacing with it via HW register + * interaction is permittable. + * + * @dc_dmub_srv - The DC DMUB service pointer + * @power_state - the DC power state + */ +void dc_dmub_srv_set_power_state(struct dc_dmub_srv *dc_dmub_srv, enum dc_acpi_cm_power_state power_state); + +/** + * dc_dmub_srv_notify_fw_dc_power_state() - Notifies firmware of the DC power state. + * + * Differs from dc_dmub_srv_set_power_state in that it needs to access HW in order + * to message DMCUB of the state transition. Should come after the D0 exit and + * before D3 set power state. + * + * @dc_dmub_srv - The DC DMUB service pointer + * @power_state - the DC power state + */ +void dc_dmub_srv_notify_fw_dc_power_state(struct dc_dmub_srv *dc_dmub_srv, + enum dc_acpi_cm_power_state power_state); /** * @dc_dmub_srv_should_detect() - Checks if link detection is required. |