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| author | Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com> | 2023-03-31 13:36:03 +0200 |
|---|---|---|
| committer | Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com> | 2023-04-05 09:07:26 +0200 |
| commit | 0ec8671837a61d841462179686c5819d951d3b10 (patch) | |
| tree | 58ec965f692f767e000e24a9484b63d277c8a05a | |
| parent | 774e7cb50359eff7e966f4e2e80c9486014d3a23 (diff) | |
| download | nvme-0ec8671837a61d841462179686c5819d951d3b10.tar.gz | |
accel/ivpu: Fix S3 system suspend when not idle
Wait for VPU to be idle in ivpu_pm_suspend_cb() before powering off
the device, so jobs are not lost and TDRs are not triggered after
resume.
Fixes: 852be13f3bd3 ("accel/ivpu: Add PM support")
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230331113603.2802515-3-stanislaw.gruszka@linux.intel.com
| -rw-r--r-- | drivers/accel/ivpu/ivpu_pm.c | 26 |
1 files changed, 11 insertions, 15 deletions
diff --git a/drivers/accel/ivpu/ivpu_pm.c b/drivers/accel/ivpu/ivpu_pm.c index 7df72fa8100f9..bde42d6383da6 100644 --- a/drivers/accel/ivpu/ivpu_pm.c +++ b/drivers/accel/ivpu/ivpu_pm.c @@ -140,32 +140,28 @@ int ivpu_pm_suspend_cb(struct device *dev) { struct drm_device *drm = dev_get_drvdata(dev); struct ivpu_device *vdev = to_ivpu_device(drm); - int ret; + unsigned long timeout; ivpu_dbg(vdev, PM, "Suspend..\n"); - ret = ivpu_suspend(vdev); - if (ret && vdev->pm->suspend_reschedule_counter) { - ivpu_dbg(vdev, PM, "Failed to enter idle, rescheduling suspend, retries left %d\n", - vdev->pm->suspend_reschedule_counter); - pm_schedule_suspend(dev, vdev->timeout.reschedule_suspend); - vdev->pm->suspend_reschedule_counter--; - return -EBUSY; - } else if (!vdev->pm->suspend_reschedule_counter) { - ivpu_warn(vdev, "Failed to enter idle, force suspend\n"); - ivpu_pm_prepare_cold_boot(vdev); - } else { - ivpu_pm_prepare_warm_boot(vdev); + timeout = jiffies + msecs_to_jiffies(vdev->timeout.tdr); + while (!ivpu_hw_is_idle(vdev)) { + cond_resched(); + if (time_after_eq(jiffies, timeout)) { + ivpu_err(vdev, "Failed to enter idle on system suspend\n"); + return -EBUSY; + } } - vdev->pm->suspend_reschedule_counter = PM_RESCHEDULE_LIMIT; + ivpu_suspend(vdev); + ivpu_pm_prepare_warm_boot(vdev); pci_save_state(to_pci_dev(dev)); pci_set_power_state(to_pci_dev(dev), PCI_D3hot); ivpu_dbg(vdev, PM, "Suspend done.\n"); - return ret; + return 0; } int ivpu_pm_resume_cb(struct device *dev) |