aboutsummaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
diff options
context:
space:
mode:
authorHuang Rui <ray.huang@amd.com>2017-04-10 09:29:13 +0800
committerAlex Deucher <alexander.deucher@amd.com>2017-04-28 17:32:13 -0400
commit692bb1ac038a0b736c2b6e9bba41ac2da38e16cf (patch)
treef4d90fb41a9ca78295d8dd4feab269c9dace76f7 /drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
parentb4de2c5aab2d5cd84c2a648d825b0e48ca426e27 (diff)
downloadlinux-stericsson-692bb1ac038a0b736c2b6e9bba41ac2da38e16cf.tar.gz
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 <ray.huang@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c')
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c6
1 files changed, 6 insertions, 0 deletions
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]);
}