linux-kernel - Re: [PATCH v2 1/4] power: supply: core: Add additional health status values

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Message-ID: <ff044893-04bd-84e1-cfc6-842787a8ba54@linux.intel.com>
Date: Fri, 9 May 2025 13:09:43 +0300 (EEST)
From: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To: Sebastian Reichel <sebastian.reichel@...labora.com>
cc: Armin Wolf <W_Armin@....de>, Hans de Goede <hdegoede@...hat.com>, 
    platform-driver-x86@...r.kernel.org, linux-pm@...r.kernel.org, 
    LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 1/4] power: supply: core: Add additional health status
 values

On Mon, 5 May 2025, Ilpo Järvinen wrote:
> On Wed, 30 Apr 2025, Sebastian Reichel wrote:
> > On Tue, Apr 29, 2025 at 02:36:03AM +0200, Armin Wolf wrote:
> > > Some batteries can signal when an internal fuse was blown. In such a
> > > case POWER_SUPPLY_HEALTH_DEAD is too vague for userspace applications
> > > to perform meaningful diagnostics.
> > > 
> > > Additionally some batteries can also signal when some of their
> > > internal cells are imbalanced. In such a case returning
> > > POWER_SUPPLY_HEALTH_UNSPEC_FAILURE is again too vague for userspace
> > > applications to perform meaningful diagnostics.
> > > 
> > > Add new health status values for both cases.
> > > 
> > > Signed-off-by: Armin Wolf <W_Armin@....de>
> > 
> > Reviewed-by: Sebastian Reichel <sebastian.reichel@...labora.com>
> 
> Hi Sebastian,
> 
> Is it okay with you I take this through pdx86 tree?

Ping?

-- 
 i.

> 
> --
>  i.
> 
> > 
> > -- Sebastian
> > 
> > > ---
> > > Changes since v1:
> > >  - rename "Fuse blown" to "Blown fuse"
> > >  - rename "Cell imbalanced" to "Cell imbalance"
> > > ---
> > >  Documentation/ABI/testing/sysfs-class-power | 2 +-
> > >  drivers/power/supply/power_supply_sysfs.c   | 2 ++
> > >  include/linux/power_supply.h                | 2 ++
> > >  3 files changed, 5 insertions(+), 1 deletion(-)
> > > 
> > > diff --git a/Documentation/ABI/testing/sysfs-class-power b/Documentation/ABI/testing/sysfs-class-power
> > > index 2a5c1a09a28f..be8be54b183d 100644
> > > --- a/Documentation/ABI/testing/sysfs-class-power
> > > +++ b/Documentation/ABI/testing/sysfs-class-power
> > > @@ -456,7 +456,7 @@ Description:
> > >  			      "Over voltage", "Under voltage", "Unspecified failure", "Cold",
> > >  			      "Watchdog timer expire", "Safety timer expire",
> > >  			      "Over current", "Calibration required", "Warm",
> > > -			      "Cool", "Hot", "No battery"
> > > +			      "Cool", "Hot", "No battery", "Blown fuse", "Cell imbalance"
> > >  
> > >  What:		/sys/class/power_supply/<supply_name>/precharge_current
> > >  Date:		June 2017
> > > diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supply/power_supply_sysfs.c
> > > index edb058c19c9c..2703ed1dd943 100644
> > > --- a/drivers/power/supply/power_supply_sysfs.c
> > > +++ b/drivers/power/supply/power_supply_sysfs.c
> > > @@ -110,6 +110,8 @@ static const char * const POWER_SUPPLY_HEALTH_TEXT[] = {
> > >  	[POWER_SUPPLY_HEALTH_COOL]		    = "Cool",
> > >  	[POWER_SUPPLY_HEALTH_HOT]		    = "Hot",
> > >  	[POWER_SUPPLY_HEALTH_NO_BATTERY]	    = "No battery",
> > > +	[POWER_SUPPLY_HEALTH_BLOWN_FUSE]	    = "Blown fuse",
> > > +	[POWER_SUPPLY_HEALTH_CELL_IMBALANCE]	    = "Cell imbalance",
> > >  };
> > >  
> > >  static const char * const POWER_SUPPLY_TECHNOLOGY_TEXT[] = {
> > > diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
> > > index 888824592953..69df3a452918 100644
> > > --- a/include/linux/power_supply.h
> > > +++ b/include/linux/power_supply.h
> > > @@ -71,6 +71,8 @@ enum {
> > >  	POWER_SUPPLY_HEALTH_COOL,
> > >  	POWER_SUPPLY_HEALTH_HOT,
> > >  	POWER_SUPPLY_HEALTH_NO_BATTERY,
> > > +	POWER_SUPPLY_HEALTH_BLOWN_FUSE,
> > > +	POWER_SUPPLY_HEALTH_CELL_IMBALANCE,
> > >  };
> > >  
> > >  enum {
> > > -- 
> > > 2.39.5
> > > 
> > 
>