linux-kernel - Re: [PATCH v4 2/4] power_supply: Add additional health properties to the header

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Date:   Tue, 31 Mar 2020 17:22:51 -0700
From:   Sandeep Patil <sspatil@...roid.com>
To:     Dan Murphy <dmurphy@...com>
Cc:     Sebastian Reichel <sebastian.reichel@...labora.com>,
        linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-team@...roid.com
Subject: Re: [PATCH v4 2/4] power_supply: Add additional health properties to
 the header

On Tue, Mar 10, 2020 at 03:09:37PM -0500, Dan Murphy wrote:
> Hello
> 
> On 3/6/20 5:55 PM, Sandeep Patil wrote:
> > Hi Sebastian,
> > 
> > On Fri, Jan 17, 2020 at 02:06:58AM +0100, Sebastian Reichel wrote:
> > > Hi,
> > > 
> > > On Thu, Jan 16, 2020 at 11:50:37AM -0600, Dan Murphy wrote:
> > > > Add HEALTH_WARM, HEALTH_COOL and HEALTH_HOT to the health enum.
> > > > 
> > > > Signed-off-by: Dan Murphy <dmurphy@...com>
> > > > ---
> > > Looks good. But I will not merge it without a user and have comments
> > > for the driver.
> > Android has been looking for these properties for a while now [1].
> > It was added[2] when we saw that the manufacturers were implementing these
> > properties in the driver. I didn't know the properties were absent upstream
> > until yesterday. Somebody pointed out in our ongoing effort to make sure
> > all core kernel changes that android depends on are present upstream.
> > 
> > I think those values are also propagated in application facing APIs in
> > Android (but I am not sure yet, let me know if that's something you want
> > to find out).
> > 
> > I wanted to chime in and present you a 'user' for this if that helps.
> 
> We have re-submitted the BQ25150/155 driver that would be the user and we
> have 2 more for review that will use the new definitions

Dan / Sebastian, I wasn't able to find the subsequent patches
that add the 3 health properties, so I'm assuming this patch is still
"out-of-tree".

I was hoping against that so we (Android) aren't unnecessarily diverging
from upstream. However, I have now just cherry-picked this patch[1] for the
next Android release.

Sebastian, since these appear in JEITA spec, will the same patch with
additions to the commit message saying so be enough?

Thanks,
- ssp

1. https://android-review.googlesource.com/c/kernel/common/+/1275596

> 
> Dan
>