linux-kernel - Re: [PATCH 3/4] power: supply: mm8013: implement POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR

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Message-ID: <2f244f9f-8796-4cad-8bf8-d0c3411588c1@redhat.com>
Date: Mon, 5 Feb 2024 11:00:01 +0100
From: Hans de Goede <hdegoede@...hat.com>
To: Thomas Weißschuh <linux@...ssschuh.net>,
 Sebastian Reichel <sre@...nel.org>, Konrad Dybcio <konradybcio@...nel.org>
Cc: linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
 Sebastian Reichel <sebastian.reichel@...labora.com>
Subject: Re: [PATCH 3/4] power: supply: mm8013: implement
 POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR_AVAILABLE

Hi,

On 2/4/24 18:26, Thomas Weißschuh wrote:
> The sysfs is documented to report both the current and all available
> behaviours. For this POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR_AVAILABLE needs
> to be implemented.
> 
> Note that this changes the format of the sysfs file
> (to the documented format):
> 
> Before: "auto"
> After:  "[auto] inhibit-charge"
> 
> Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>

Changing userspace API like this is never ideal, but given how
new the mm8013 driver is and that this brings things inline
with the docs I think that this should be fine:

Reviewed-by: Hans de Goede <hdegoede@...hat.com>

Regards,

Hans




> ---
>  drivers/power/supply/mm8013.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/power/supply/mm8013.c b/drivers/power/supply/mm8013.c
> index caa272b03564..695df8bd6cb0 100644
> --- a/drivers/power/supply/mm8013.c
> +++ b/drivers/power/supply/mm8013.c
> @@ -72,6 +72,7 @@ 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_BEHAVIOUR_AVAILABLE,
>  	POWER_SUPPLY_PROP_CHARGE_FULL,
>  	POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
>  	POWER_SUPPLY_PROP_CHARGE_NOW,
> @@ -113,6 +114,10 @@ static int mm8013_get_property(struct power_supply *psy,
>  		else
>  			val->intval = POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO;
>  		break;
> +	case POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR_AVAILABLE:
> +		val->intval = BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO)
> +			    | BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE);
> +		break;
>  	case POWER_SUPPLY_PROP_CHARGE_FULL:
>  		ret = regmap_read(chip->regmap, REG_FULL_CHARGE_CAPACITY, &regval);
>  		if (ret < 0)
>