In the rare event when GFX IP suspend coincides with a s0ix entry, don't schedule a delayed work, instead signal PMFW immediately to allow GFXOFF entry. GFXOFF is a prerequisite for s0ix entry. PMFW needs to be signaled about GFXOFF status before amd-pmc module passes OS HINT to PMFW telling that everything is ready for a safe s0ix entry.
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1712 Signed-off-by: Lijo Lazar <lijo.la...@amd.com> --- drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c index e7f06bd0f0cd..1916ec84dd71 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c @@ -31,6 +31,8 @@ /* delay 0.1 second to enable gfx off feature */ #define GFX_OFF_DELAY_ENABLE msecs_to_jiffies(100) +#define GFX_OFF_NO_DELAY 0 + /* * GPU GFX IP block helpers function. */ @@ -558,6 +560,8 @@ int amdgpu_gfx_enable_kcq(struct amdgpu_device *adev) void amdgpu_gfx_off_ctrl(struct amdgpu_device *adev, bool enable) { + unsigned long delay = GFX_OFF_DELAY_ENABLE; + if (!(adev->pm.pp_feature & PP_GFXOFF_MASK)) return; @@ -573,8 +577,14 @@ void amdgpu_gfx_off_ctrl(struct amdgpu_device *adev, bool enable) adev->gfx.gfx_off_req_count--; - if (adev->gfx.gfx_off_req_count == 0 && !adev->gfx.gfx_off_state) - schedule_delayed_work(&adev->gfx.gfx_off_delay_work, GFX_OFF_DELAY_ENABLE); + if (adev->gfx.gfx_off_req_count == 0 && + !adev->gfx.gfx_off_state) { + /* If going to s2idle, no need to wait */ + if (adev->in_s0ix) + delay = GFX_OFF_NO_DELAY; + schedule_delayed_work(&adev->gfx.gfx_off_delay_work, + delay); + } } else { if (adev->gfx.gfx_off_req_count == 0) { cancel_delayed_work_sync(&adev->gfx.gfx_off_delay_work); -- 2.17.1
