linux-kernel - Re: [PATCH v2 1/4] power: supply: mm8013: fix "not charging" detection

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Date: Wed, 6 Mar 2024 01:25:21 +0100
From: Sebastian Reichel <sebastian.reichel@...labora.com>
To: Thomas Weißschuh <linux@...ssschuh.net>
Cc: Hans de Goede <hdegoede@...hat.com>, 
	Konrad Dybcio <konradybcio@...nel.org>, linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/4] power: supply: mm8013: fix "not charging"
 detection

Hi,

On Sun, Mar 03, 2024 at 04:31:13PM +0100, Thomas Weißschuh wrote:
> The charge_behaviours property is meant as a control-knob that can be
> changed by the user.
> 
> Page 23 of [0] which documents the flag CHG_INH as follows:
> 
>   CHG_INH : Charge Inhibit      When the current is more than or equal to charge
>                                 threshold current,
>                                 charge inhibit temperature (upper/lower limit) ：1
>                                 charge permission temperature or the current is
>                                 less than charge threshold current ：0
> 
> So this is pure read-only information which is better represented as
> POWER_SUPPLY_STATUS_NOT_CHARGING.
> 
> [0] https://product.minebeamitsumi.com/en/product/category/ics/battery/fuel_gauge/parts/download/__icsFiles/afieldfile/2023/07/12/1_download_01_12.pdf
> 
> Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
> ---

I queued this with 

Fixes: e39257cde7e8 ("power: supply: mm8013: Add more properties")

-- Sebastian

>  drivers/power/supply/mm8013.c | 13 ++-----------
>  1 file changed, 2 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/power/supply/mm8013.c b/drivers/power/supply/mm8013.c
> index caa272b03564..20c1651ca38e 100644
> --- a/drivers/power/supply/mm8013.c
> +++ b/drivers/power/supply/mm8013.c
> @@ -71,7 +71,6 @@ static int mm8013_checkdevice(struct mm8013_chip *chip)
>  
>  static enum power_supply_property mm8013_battery_props[] = {
>  	POWER_SUPPLY_PROP_CAPACITY,
> -	POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR,
>  	POWER_SUPPLY_PROP_CHARGE_FULL,
>  	POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
>  	POWER_SUPPLY_PROP_CHARGE_NOW,
> @@ -103,16 +102,6 @@ static int mm8013_get_property(struct power_supply *psy,
>  
>  		val->intval = regval;
>  		break;
> -	case POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR:
> -		ret = regmap_read(chip->regmap, REG_FLAGS, &regval);
> -		if (ret < 0)
> -			return ret;
> -
> -		if (regval & MM8013_FLAG_CHG_INH)
> -			val->intval = POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE;
> -		else
> -			val->intval = POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO;
> -		break;
>  	case POWER_SUPPLY_PROP_CHARGE_FULL:
>  		ret = regmap_read(chip->regmap, REG_FULL_CHARGE_CAPACITY, &regval);
>  		if (ret < 0)
> @@ -187,6 +176,8 @@ static int mm8013_get_property(struct power_supply *psy,
>  
>  		if (regval & MM8013_FLAG_DSG)
>  			val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
> +		else if (regval & MM8013_FLAG_CHG_INH)
> +			val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
>  		else if (regval & MM8013_FLAG_CHG)
>  			val->intval = POWER_SUPPLY_STATUS_CHARGING;
>  		else if (regval & MM8013_FLAG_FC)
> 
> -- 
> 2.44.0
> 

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