From 08e23a02e3e2dd6dde0f2f5bb90d03f5bc2a5804 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 6 Oct 2016 11:25:25 -0400 Subject: drm/amdgpu: drop atom scratch save/restore in gpu reset MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This is already handled by the dce IP modules in their suspend and resume code. No need to do it again. Reviewed-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 4 ---- 1 file changed, 4 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_device.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index b4f4a9239069..2b0267494bca 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -2268,8 +2268,6 @@ int amdgpu_gpu_reset(struct amdgpu_device *adev) } if (need_full_reset) { - /* save scratch */ - amdgpu_atombios_scratch_regs_save(adev); r = amdgpu_suspend(adev); retry: @@ -2288,8 +2286,6 @@ retry: dev_info(adev->dev, "GPU reset succeeded, trying to resume\n"); r = amdgpu_resume(adev); } - /* restore scratch */ - amdgpu_atombios_scratch_regs_restore(adev); } if (!r) { amdgpu_irq_gpu_reset_resume_helper(adev); -- cgit From e695e77c6b49c49e5eafdc6239d6b22bfa30c7cc Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Wed, 19 Oct 2016 14:40:58 -0400 Subject: drm/amdgpu: move atom scratch register save/restore to common code We need this for more than just DCE. Move it out of the DCE modules and into the device code. This way we can be sure the scratch registers are initialized properly before we run asic_init which happens before DCE IPs are restored. Fixes atombios hangs in asic_init. Reviewed-by: JimQu Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_device.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 2b0267494bca..7ca07e7b25c1 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -1959,6 +1959,7 @@ int amdgpu_device_suspend(struct drm_device *dev, bool suspend, bool fbcon) /* evict remaining vram memory */ amdgpu_bo_evict_vram(adev); + amdgpu_atombios_scratch_regs_save(adev); pci_save_state(dev->pdev); if (suspend) { /* Shut down the device */ @@ -2010,6 +2011,7 @@ int amdgpu_device_resume(struct drm_device *dev, bool resume, bool fbcon) return r; } } + amdgpu_atombios_scratch_regs_restore(adev); /* post card */ if (!amdgpu_card_posted(adev) || !resume) { @@ -2277,8 +2279,9 @@ retry: amdgpu_display_stop_mc_access(adev, &save); amdgpu_wait_for_idle(adev, AMD_IP_BLOCK_TYPE_GMC); } - + amdgpu_atombios_scratch_regs_save(adev); r = amdgpu_asic_reset(adev); + amdgpu_atombios_scratch_regs_restore(adev); /* post card */ amdgpu_atom_asic_init(adev->mode_info.atom_context); -- cgit