diff options
| author | Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> | 2024-03-07 14:50:00 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-03-22 15:49:38 -0400 |
| commit | 8803bfffb7f81a6e62950ce772bd4d02b02b1adf (patch) | |
| tree | 0ded8aafcf68c36fa3a806524d5551e23a58d09d /drivers/gpu/drm/amd/display/dmub | |
| parent | 93ddf00f874c26e078ba01010bc126f521d49e7f (diff) | |
drm/amd/display: Add optional optimization for IPS handshake
[Why]
It's possible to skip parts of the eval and exit sequencing if we know
whether DCN is in IPS2 already or if it's committed to going to idle
and not in IPS2.
[How]
Skip IPS2 entry/exit if DMCUB is idle but the IPS2 commit is not set.
Skip the eval delay if DMCUB is already in IPS2 since we know we need
to exit.
These are turned off by default.
Reviewed-by: Duncan Ma <duncan.ma@amd.com>
Acked-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@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/dmub')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h index 7b807aea8aa7..818e5d87f0da 100644 --- a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h +++ b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h @@ -700,7 +700,8 @@ union dmub_shared_state_ips_fw_signals { struct { uint32_t ips1_commit : 1; /**< 1 if in IPS1 */ uint32_t ips2_commit : 1; /**< 1 if in IPS2 */ - uint32_t reserved_bits : 30; /**< Reversed */ + uint32_t in_idle : 1; /**< 1 if DMCUB is in idle */ + uint32_t reserved_bits : 29; /**< Reversed */ } bits; uint32_t all; }; |