Re: [Qemu-devel] [PATCH][RFC 02/14] qdev: add power management method

["Andreas Färber" <afaerber@suse.de>]

Am 13.03.2013 09:01, schrieb liguang:
> In fact, every devices have to be aware of
> it's power management, so it can decide what
> to do when platform board switch it's power
> state between on/off/suspend/wakeup.
> 
> Signed-off-by: liguang <lig.fnst@cn.fujitsu.com>
> ---
>  hw/qdev-core.h |    6 ++++++
>  1 files changed, 6 insertions(+), 0 deletions(-)
> 
> diff --git a/hw/qdev-core.h b/hw/qdev-core.h
> index 2486f36..e69c50b 100644
> --- a/hw/qdev-core.h
> +++ b/hw/qdev-core.h
> @@ -85,6 +85,12 @@ typedef struct DeviceClass {
>      Property *props;
>      int no_user;
>  
> +    /* power management */
> +    void (*on)(DeviceState *dev);
> +    void (*off)(DeviceState *dev);
> +    void (*suspend)(DeviceState *dev);
> +    void (*wakeup)(DeviceState *dev);
> +
>      /* callbacks */
>      void (*reset)(DeviceState *dev);
>      DeviceRealize realize;

Whatever callbacks get added, they should be added down here and get
gtk-doc documentation above the struct. That should also include some
guidelines on how new devices should implement these (hint: we'd want to
avoid code duplication).

I have the feeling your hooks may be rather x86-specific - have you
checked against any other architecture?

Andreas

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