drm/amdgpu: Add dcdebugmask option to enable DPIA trace

[Why & How]
It's useful to be able to enable DPIA trace with dcdebugmask
option, especially to debug DPIA issues involved in transition
of system power states.

This patch adds an option to amdgpu.dcdebugmask to be picked up
by amdgpu DM to enable DPIA trace.

Signed-off-by: Stylon Wang <stylon.wang@amd.com>
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/include/amd_shared.h b/drivers/gpu/drm/amd/include/amd_shared.h
index f175e65b853a001ea1bcc66d8edfd5b726cbc952..abe829bbd54af668e113a4b2724e4ed72ae57511 100644 (file)
--- a/drivers/gpu/drm/amd/include/amd_shared.h
+++ b/drivers/gpu/drm/amd/include/amd_shared.h
@@ -250,6 +250,7 @@ enum DC_DEBUG_MASK {
        DC_DISABLE_PSR = 0x10,
        DC_FORCE_SUBVP_MCLK_SWITCH = 0x20,
        DC_DISABLE_MPO = 0x40,
+       DC_ENABLE_DPIA_TRACE = 0x80,
 };
 
 enum amd_dpm_forced_level;