linux-kernel - [PATCH v2 0/2] virtio_mmio: add support to set IRQ of a virtio device as wakeup source

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Message-ID: <1654851507-13891-1-git-send-email-quic_mingxue@quicinc.com>
Date:   Fri, 10 Jun 2022 16:58:25 +0800
From:   Minghao Xue <quic_mingxue@...cinc.com>
To:     "Michael S. Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        Rob Herring <robh+dt@...nel.org>
CC:     Minghao Xue <quic_mingxue@...cinc.com>,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        <virtualization@...ts.linux-foundation.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <quic_ztu@...cinc.com>
Subject: [PATCH v2 0/2] virtio_mmio: add support to set IRQ of a virtio device as wakeup source

Hi,
Some systems want to set the interrupt of virtio_mmio device as a wakeup source of system.
This patch series add support for such use case. And it can be enbaled by adding "wakeup-source" property to the device tree.

Patch 1: Add an optional "wakeup-source" property into binding file of virtio_mmio device.
Patch 2: Set IRQ of virtio_mmio device as wakeup source in virtqueue initialization, if "wakeup-source" is set in the device tree.

Version 2 changes (mostly feedback from Krzysztof Kozlowski)
-rename property from "virtio,wakeup" to "wakeup-source"

Minghao Xue (2):
  dt-bindings: virtio: mmio: add optional wakeup-source property
  virtio_mmio: add support to set IRQ of a virtio device as wakeup
    source

 Documentation/devicetree/bindings/virtio/mmio.yaml | 4 ++++
 drivers/virtio/virtio_mmio.c                       | 3 +++
 2 files changed, 7 insertions(+)

-- 
2.7.4