diff options
Diffstat (limited to 'drivers/gpu/drm/panthor/panthor_device.c')
| -rw-r--r-- | drivers/gpu/drm/panthor/panthor_device.c | 35 |
1 files changed, 21 insertions, 14 deletions
diff --git a/drivers/gpu/drm/panthor/panthor_device.c b/drivers/gpu/drm/panthor/panthor_device.c index 0a37cfeeb181..f0b2da5b2b96 100644 --- a/drivers/gpu/drm/panthor/panthor_device.c +++ b/drivers/gpu/drm/panthor/panthor_device.c @@ -128,14 +128,11 @@ static void panthor_device_reset_work(struct work_struct *work) struct panthor_device *ptdev = container_of(work, struct panthor_device, reset.work); int ret = 0, cookie; - if (atomic_read(&ptdev->pm.state) != PANTHOR_DEVICE_PM_STATE_ACTIVE) { - /* - * No need for a reset as the device has been (or will be) - * powered down - */ - atomic_set(&ptdev->reset.pending, 0); + /* If the device is entering suspend, we don't reset. A slow reset will + * be forced at resume time instead. + */ + if (atomic_read(&ptdev->pm.state) != PANTHOR_DEVICE_PM_STATE_ACTIVE) return; - } if (!drm_dev_enter(&ptdev->base, &cookie)) return; @@ -174,10 +171,6 @@ int panthor_device_init(struct panthor_device *ptdev) struct page *p; int ret; - ret = panthor_gpu_coherency_init(ptdev); - if (ret) - return ret; - init_completion(&ptdev->unplug.done); ret = drmm_mutex_init(&ptdev->base, &ptdev->unplug.lock); if (ret) @@ -187,6 +180,11 @@ int panthor_device_init(struct panthor_device *ptdev) if (ret) return ret; +#ifdef CONFIG_DEBUG_FS + drmm_mutex_init(&ptdev->base, &ptdev->gems.lock); + INIT_LIST_HEAD(&ptdev->gems.node); +#endif + atomic_set(&ptdev->pm.state, PANTHOR_DEVICE_PM_STATE_SUSPENDED); p = alloc_page(GFP_KERNEL | __GFP_ZERO); if (!p) @@ -250,6 +248,10 @@ int panthor_device_init(struct panthor_device *ptdev) if (ret) goto err_rpm_put; + ret = panthor_gpu_coherency_init(ptdev); + if (ret) + goto err_unplug_gpu; + ret = panthor_mmu_init(ptdev); if (ret) goto err_unplug_gpu; @@ -477,6 +479,14 @@ int panthor_device_resume(struct device *dev) if (panthor_device_is_initialized(ptdev) && drm_dev_enter(&ptdev->base, &cookie)) { + /* If there was a reset pending at the time we suspended the + * device, we force a slow reset. + */ + if (atomic_read(&ptdev->reset.pending)) { + ptdev->reset.fast = false; + atomic_set(&ptdev->reset.pending, 0); + } + ret = panthor_device_resume_hw_components(ptdev); if (ret && ptdev->reset.fast) { drm_err(&ptdev->base, "Fast reset failed, trying a slow reset"); @@ -493,9 +503,6 @@ int panthor_device_resume(struct device *dev) goto err_suspend_devfreq; } - if (atomic_read(&ptdev->reset.pending)) - queue_work(ptdev->reset.wq, &ptdev->reset.work); - /* Clear all IOMEM mappings pointing to this device after we've * resumed. This way the fake mappings pointing to the dummy pages * are removed and the real iomem mapping will be restored on next |