git/linux-net
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/ synced 2026-04-18 06:33:43 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/amd/display: Log DMCUB trace buffer events

Browse Source 
[Why]
We want to log DMCUB trace buffer events as Linux kernel traces.

[How]
Register an IRQ handler for DMCUB outbox0 interrupt in amdgpu_dm,
and log the messages in the DMCUB tracebuffer to a new DMCUB
TRACE_EVENT as soon as we receive the outbox0 IRQ from DMCUB FW.

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Leo (Hanghong) Ma <hanghong.ma@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Acked-by: Solomon Chiu <solomon.chiu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Leo (Hanghong) Ma
2021-02-19 16:22:58 -05:00
committed by Alex Deucher
parent 234cc26f7d
commit a08f16cfe8
7 changed files with 160 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
View File

@@ -339,6 +339,15 @@ struct amdgpu_display_manager {
struct common_irq_params
vupdate_params[DC_IRQ_SOURCE_VUPDATE6 - DC_IRQ_SOURCE_VUPDATE1 + 1];
/**
* @dmub_trace_params:
*
* DMUB trace event IRQ parameters, passed to registered handlers when
* triggered.
*/
struct common_irq_params
dmub_trace_params[1];
spinlock_t irq_handler_list_table_lock;
struct backlight_device *backlight_dev;