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drm/amd/display: Add DMU crash recovery callback to DM

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[Why]
To improve reliability of the system in the case of infrequent or
potentially recoverable hangs when the DMU times out.

[How]
Attempt to recover the ASIC when DMU hangs by triggering a crash
recovery callback for the DM to forward to the base driver.

Reviewed-by: Dillon Varone <dillon.varone@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Matthew Stewart <matthew.stewart2@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Nicholas Kazlauskas
2026-01-08 14:00:02 -05:00
committed by Alex Deucher
parent c0d6f52f9b
commit 443c30f243
4 changed files with 30 additions and 13 deletions
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1
drivers/gpu/drm/amd/display/dc/dm_helpers.h
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@@ -197,6 +197,7 @@ void dm_set_phyd32clk(struct dc_context *ctx, int freq_khz);
bool dm_helpers_dmub_outbox_interrupt_control(struct dc_context *ctx, bool enable);
void dm_helpers_dmu_timeout(struct dc_context *ctx);
void dm_helpers_smu_timeout(struct dc_context *ctx, unsigned int msg_id, unsigned int param, unsigned int timeout_us);
// 0x1 = Result_OK, 0xFE = Result_UnkmownCmd, 0x0 = Status_Busy