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drm/amd/display: Wake DMCUB before sending a command for replay feature

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[Why]
We can hang in place trying to send commands when the DMCUB isn't
powered on.

[How]
For functions that execute within a DC context or DC lock we can wrap
the direct calls to dm_execute_dmub_cmd/list with code that exits idle
power optimizations and reallows once we're done with the command
submission on success.

For DM direct submissions the DM will need to manage the enter/exit
sequencing manually.

We cannot invoke a DMCUB command directly within the DM execution helper
or we can deadlock.

Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@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>
This commit is contained in:
Nicholas Kazlauskas 2023-12-04 16:35:04 -05:00 committed by Alex Deucher
parent b5236da757
commit 3601a35a2e
1 changed files with 3 additions and 3 deletions
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6
drivers/gpu/drm/amd/display/dc/dce/dmub_replay.c
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@ -78,7 +78,7 @@ static void dmub_replay_enable(struct dmub_replay *dmub, bool enable, bool wait,
cmd.replay_enable.header.payload_bytes = sizeof(struct dmub_rb_cmd_replay_enable_data);
dm_execute_dmub_cmd(dc, &cmd, DM_DMUB_WAIT_TYPE_WAIT);
dc_wake_and_execute_dmub_cmd(dc, &cmd, DM_DMUB_WAIT_TYPE_WAIT);
/* Below loops 1000 x 500us = 500 ms.
* Exit REPLAY may need to wait 1-2 frames to power up. Timeout after at
@ -121,7 +121,7 @@ static void dmub_replay_set_power_opt(struct dmub_replay *dmub, unsigned int pow
cmd.replay_set_power_opt.replay_set_power_opt_data.power_opt = power_opt;
cmd.replay_set_power_opt.replay_set_power_opt_data.panel_inst = panel_inst;
dm_execute_dmub_cmd(dc, &cmd, DM_DMUB_WAIT_TYPE_WAIT);
dc_wake_and_execute_dmub_cmd(dc, &cmd, DM_DMUB_WAIT_TYPE_WAIT);
}
/*
@ -225,7 +225,7 @@ static void dmub_replay_set_coasting_vtotal(struct dmub_replay *dmub,
cmd.replay_set_coasting_vtotal.header.payload_bytes = sizeof(struct dmub_cmd_replay_set_coasting_vtotal_data);
cmd.replay_set_coasting_vtotal.replay_set_coasting_vtotal_data.coasting_vtotal = coasting_vtotal;
dm_execute_dmub_cmd(dc, &cmd, DM_DMUB_WAIT_TYPE_WAIT);
dc_wake_and_execute_dmub_cmd(dc, &cmd, DM_DMUB_WAIT_TYPE_WAIT);
}
/*