linux-kernel - Re: [RFC 4/4] charger-manager: Enable psy based charge control

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Date:	Sun, 8 Mar 2015 03:14:09 +0100
From:	Sebastian Reichel <sre@...nel.org>
To:	Jenny TC <jenny.tc@...el.com>
Cc:	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
	Anton Vorontsov <anton.vorontsov@...aro.org>,
	David Woodhouse <dwmw2@...radead.org>,
	jonghwa3.lee@...sung.com, myungjoo.ham@...il.com,
	Pallala Ramakrishna <ramakrishna.pallala@...el.com>
Subject: Re: [RFC 4/4] charger-manager: Enable psy based charge control

Hi,

On Fri, Mar 06, 2015 at 04:03:27PM +0530, Jenny TC wrote:
> At present charger manager support only regulator based charging
> control. But most of the charger drivers are registered with power
> supply subsystem. This patch adds support for power supply based
> charging control along with the regulator based control. With the
> patch, charging control can be done either using power supply
> interface or with regulator interface. The charging is setup
> based on battery parameters received through the battery info
> handlers.

[...]

(so far I only skipped over the patch)

[...]

> @@ -1704,6 +1968,10 @@ static int charger_manager_probe(struct platform_device *pdev)
>  		strncpy(cm->psy_name_buf, desc->psy_name, PSY_NAME_MAX);
>  	cm->charger_psy.name = cm->psy_name_buf;
>  
> +	if (!power_supply_get_property(fuel_gauge, POWER_SUPPLY_PROP_MODEL_NAME,
> +						&val))
> +		cm->battery_info = psy_get_battery_info(val.strval);
> +
>  	/* Allocate for psy properties because they may vary */
>  	cm->charger_psy.properties = devm_kzalloc(&pdev->dev,
>  				sizeof(enum power_supply_property)

We are currently splitting battery data from fuel gauge data, so
acquiring the battery using the fuel gauge's MODEL_NAME is not very
nice.

-- Sebastian

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