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virtio_mmio: add support to set a virtio device as wakeup source

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According to virtio_mmio wakeup flag in device trees, set its IRQ
as wakeup source in virtqueue initialization.

Change-Id: Id861bf10d475c66bcb343dbbb01ba143338dd18c
Signed-off-by: Minghao Xue <mingxue@codeaurora.org>
This commit is contained in:
Minghao Xue 2020-09-10 17:11:16 +08:00
commit 8a3cdd45a7
1 changed files with 3 additions and 0 deletions
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3
drivers/virtio/virtio_mmio.c
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@ -476,6 +476,9 @@ static int vm_find_vqs(struct virtio_device *vdev, unsigned nvqs,
if (err)
return err;
if (of_property_read_bool(vm_dev->pdev->dev.of_node, "virtio,wakeup"))
enable_irq_wake(irq);
for (i = 0; i < nvqs; ++i) {
if (!names[i]) {
vqs[i] = NULL;