Re: [PATCH v7 0/4] Introduce usb charger framework to deal with the usb gadget power negotation

From: Felipe Balbi
Date: Wed Mar 16 2016 - 07:49:43 EST

Hi Baolin,

Baolin Wang <> writes:
> [ text/plain ]
> Currently the Linux kernel does not provide any standard integration of this
> feature that integrates the USB subsystem with the system power regulation
> provided by PMICs meaning that either vendors must add this in their kernels
> or USB gadget devices based on Linux (such as mobile phones) may not behave
> as they should. Thus provide a standard framework for doing this in kernel.
> Now introduce one user with wm831x_power to support and test the usb charger,
> which is pending testing. Moreover there may be other potential users will use
> it in future.
> Changes since v5:
> - Remove the notifier chain things from the gadget and introduce one callback
> function to report to the usb charger when the gadget state is changed.
> - Flesh out the port type detection which combines the USB negotiation and
> PMICs detection.
> - Supply the notification mechanism to userspace when charger state is changed.
> - Integrate with the vbus staff in the gadget API.
> - Spilt up the functionality for userspace with one file per USB charger type.
> - Rebase on "4.5-rc4".
> Baolin Wang (4):
> gadget: Introduce the usb charger framework
> gadget: Support for the usb charger framework
> gadget: Integrate with the usb gadget supporting for usb charger
> power: wm831x_power: Support USB charger current limit management

Thank you for resending this. I'll review it ASAP (probably tomorrow
when I get to the office. If I have time, still today)


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