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77e17b5dff3d8931fb54469bbbb4574ba5d20f4a
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2 Commits

Author SHA1 Message Date
Yuan Liu
77e17b5dff DM: virtio-gpio: gpio initialization. 
Add gpio initializaiton and gpio usage implementation

gpio usage:
-s <slot>,virtio-gpio,<gpio resources>

<gpio resources format>
<@chip_name{offset|name[=vname]:offset|name[=vname]:...}
[@chip_name{offset|name[=vname]:offset|name[=vname]:...}]
[@chip_name{offset|name[=vname]:offset|name[=vname]:...}]
...>

Tracked-On: #2512
Signed-off-by: Yuan Liu <yuan1.liu@intel.com>
Acked-by: Yu Wang <yu1.wang@intel.com>
 2019-02-21 14:11:52 +08:00
Yuan Liu
57029315d7 DM: virtio-gpio: virtio framework implementation. 
virtio framework implementation for virtio-based gpio virtualization.
virtio-based gpio uses one virtqueue to implement gpio operaions and
frontend gpio chip base and number are provided by virtio config.

Tracked-On: #2512
Signed-off-by: Yuan Liu <yuan1.liu@intel.com>
Acked-by: Yu Wang <yu1.wang@intel.com>
 2019-02-21 14:11:52 +08:00