Re: Method to power off HID device from driver?

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On Tue, 2016-12-06 at 19:20 -0800, Cameron Gutman wrote:
> Hi,
> 
> > On Dec 6, 2016, at 4:25 PM, Roderick Colenbrander <roderick@gaikai.
> > com> wrote:
> > 
> > Hi,
> > 
> > I looked a bit deeper and found EV_PWR, though it isn't clearly
> > defined, but it is used in some places for purposes like this.
> > Would
> > this be an acceptable method?
> > 
> 
> I am interested in this too. I recently implemented the ability to
> turn off wireless Xbox 360 controllers in [0], but there is no way
> to activate this functionality without suspending the whole system.
> Some folks [1] have asked for this ability in other scenarios.
> 
> [0]: Commit f712a5a05228058f6b74 ("Input: xpad - power off wireless
>                                    360 controllers on suspend")
> [1]: https://github.com/paroj/xpad/issues/52

Ditto the PS3 BD remote driver, when moving to the kernel, lost its
ability to suspend after X minutes, which drains the AA batteries
inside it.

In the original system, the remote would get disconnected after less
than a couple of minutes, and reconnect as soon as you pressed a
button, and make sure that button got sent to the device.

Would be great if we could control this from user-space.
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