[Why&How]
Expose a new debugfs enum to force a subviewport memory clock switch
to facilitate easy testing.
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@xxxxxxx>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 +++
drivers/gpu/drm/amd/include/amd_shared.h | 1 +
2 files changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index c9145864ed2b..7a034ca95be2 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -1559,6 +1559,9 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
if (amdgpu_dc_debug_mask & DC_DISABLE_CLOCK_GATING)
adev->dm.dc->debug.disable_clock_gate = true;
+ if (amdgpu_dc_debug_mask & DC_FORCE_SUBVP_MCLK_SWITCH)
+ adev->dm.dc->debug.force_subvp_mclk_switch = true;
+
r = dm_dmub_hw_init(adev);
if (r) {
DRM_ERROR("DMUB interface failed to initialize: status=%d\n", r);
diff --git a/drivers/gpu/drm/amd/include/amd_shared.h b/drivers/gpu/drm/amd/include/amd_shared.h
index bcdf7453a403..b1c55dd7b498 100644
--- a/drivers/gpu/drm/amd/include/amd_shared.h
+++ b/drivers/gpu/drm/amd/include/amd_shared.h
@@ -247,6 +247,7 @@ enum DC_DEBUG_MASK {
DC_DISABLE_DSC = 0x4,
DC_DISABLE_CLOCK_GATING = 0x8,
DC_DISABLE_PSR = 0x10,
+ DC_FORCE_SUBVP_MCLK_SWITCH = 0x20,
};
enum amd_dpm_forced_level;
--
2.36.1
