linux-kernel - Re: [PATCH v5 4/4] power: supply: core: property to control reverse charge

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Date:   Tue, 21 Jul 2020 10:21:28 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Qiwu Huang <yanziily@...il.com>
Cc:     sre@...nel.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, jiangfei1@...omi.com,
        Qiwu Huang <huangqiwu@...omi.com>
Subject: Re: [PATCH v5 4/4] power: supply: core: property to control reverse
 charge

On Tue, Jul 21, 2020 at 01:59:37PM +0800, Qiwu Huang wrote:
> From: Qiwu Huang <huangqiwu@...omi.com>
> 
> Interface to control wireless reverse charge.
> Supply reverse charge function when enabled.
> 
> Signed-off-by: Qiwu Huang <huangqiwu@...omi.com>
> ---
>  Documentation/ABI/testing/sysfs-class-power | 12 ++++++++++++
>  drivers/power/supply/power_supply_sysfs.c   |  1 +
>  include/linux/power_supply.h                |  1 +
>  3 files changed, 14 insertions(+)
> 
> diff --git a/Documentation/ABI/testing/sysfs-class-power b/Documentation/ABI/testing/sysfs-class-power
> index 75ec7de2fe78..54647d6995d3 100644
> --- a/Documentation/ABI/testing/sysfs-class-power
> +++ b/Documentation/ABI/testing/sysfs-class-power
> @@ -767,3 +767,15 @@ Description:
>  
>  		Access: Read-Only
>  		Valid values: 0 - 100
> +
> +What:		/sys/class/power_supply/<supply_name>/reverse_chg_mode
> +Date:		Jul 2020
> +Contact:	Fei Jiang <jiangfei1@...omi.com>
> +Description:
> +		Some phones support wireless reverse charge function which charge other phones.

Replace "phones" with "devices"?

And shouldn't these lines be wrapped properly at 72 colums or so?

> +		The property supply interface to control wireless reverse charge.

I can't understand this sentance.

> +		If enabled, start TX mode and detect RX. Disabled when timeout or manual setting.

Can this be set, or is it just something to be read?

thanks,

greg k-h