From 1d318cb06e47cb7a5235ba28549c45ec9f6d0c2c Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Fri, 4 Oct 2019 10:50:24 -0500 Subject: [PATCH 4546/4736] drm/amdgpu: add additional boco checks to runtime suspend/resume (v2) BACO - Bus Active, Chip Off BOCO - Bus Off, Chip Off We will take slightly different paths for boco and baco. v2: fold together two consecutive if clauses Change-Id: I2467c2906f855140f909cff322be587850c16a25 Reviewed-by: Evan Quan (v1) Signed-off-by: Alex Deucher Signed-off-by: Rahul Kumar --- drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 47 ++++++++++++++----------- 1 file changed, 26 insertions(+), 21 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index 3acdad16f0c2..db41bdba954e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -1253,18 +1253,21 @@ static int amdgpu_pmops_runtime_suspend(struct device *dev) return -EBUSY; } - drm_dev->switch_power_state = DRM_SWITCH_POWER_CHANGING; + if (amdgpu_device_supports_boco(drm_dev)) + drm_dev->switch_power_state = DRM_SWITCH_POWER_CHANGING; drm_kms_helper_poll_disable(drm_dev); ret = amdgpu_device_suspend(drm_dev, false, false); - pci_save_state(pdev); - pci_disable_device(pdev); - pci_ignore_hotplug(pdev); - if (amdgpu_is_atpx_hybrid()) - pci_set_power_state(pdev, PCI_D3cold); - else if (!amdgpu_has_atpx_dgpu_power_cntl()) - pci_set_power_state(pdev, PCI_D3hot); - drm_dev->switch_power_state = DRM_SWITCH_POWER_DYNAMIC_OFF; + if (amdgpu_device_supports_boco(drm_dev)) { + pci_save_state(pdev); + pci_disable_device(pdev); + pci_ignore_hotplug(pdev); + if (amdgpu_is_atpx_hybrid()) + pci_set_power_state(pdev, PCI_D3cold); + else if (!amdgpu_has_atpx_dgpu_power_cntl()) + pci_set_power_state(pdev, PCI_D3hot); + drm_dev->switch_power_state = DRM_SWITCH_POWER_DYNAMIC_OFF; + } return 0; } @@ -1278,20 +1281,22 @@ static int amdgpu_pmops_runtime_resume(struct device *dev) if (!amdgpu_device_supports_boco(drm_dev)) return -EINVAL; - drm_dev->switch_power_state = DRM_SWITCH_POWER_CHANGING; - - if (amdgpu_is_atpx_hybrid() || - !amdgpu_has_atpx_dgpu_power_cntl()) - pci_set_power_state(pdev, PCI_D0); - pci_restore_state(pdev); - ret = pci_enable_device(pdev); - if (ret) - return ret; - pci_set_master(pdev); - + if (amdgpu_device_supports_boco(drm_dev)) { + drm_dev->switch_power_state = DRM_SWITCH_POWER_CHANGING; + + if (amdgpu_is_atpx_hybrid() || + !amdgpu_has_atpx_dgpu_power_cntl()) + pci_set_power_state(pdev, PCI_D0); + pci_restore_state(pdev); + ret = pci_enable_device(pdev); + if (ret) + return ret; + pci_set_master(pdev); + } ret = amdgpu_device_resume(drm_dev, false, false); drm_kms_helper_poll_enable(drm_dev); - drm_dev->switch_power_state = DRM_SWITCH_POWER_ON; + if (amdgpu_device_supports_boco(drm_dev)) + drm_dev->switch_power_state = DRM_SWITCH_POWER_ON; return 0; } -- 2.17.1