From 692bb1ac038a0b736c2b6e9bba41ac2da38e16cf Mon Sep 17 00:00:00 2001 From: Huang Rui Date: Mon, 10 Apr 2017 09:29:13 +0800 Subject: drm/amdgpu: fix to clear ASIC INIT COMPLETE bit on resuming phase ASIC_INIT_COMPLETE bit must be cleared during S3 resuming phase, because VBIOS will check the bit to decide if execute ASIC_Init posting via kernel driver. Signed-off-by: Huang Rui Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c index ad4329922f79..1cf78f4dd339 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c @@ -1727,6 +1727,12 @@ void amdgpu_atombios_scratch_regs_restore(struct amdgpu_device *adev) { int i; + /* + * VBIOS will check ASIC_INIT_COMPLETE bit to decide if + * execute ASIC_Init posting via driver + */ + adev->bios_scratch[7] &= ~ATOM_S7_ASIC_INIT_COMPLETE_MASK; + for (i = 0; i < AMDGPU_BIOS_NUM_SCRATCH; i++) WREG32(mmBIOS_SCRATCH_0 + i, adev->bios_scratch[i]); } -- cgit v1.2.3