linux-kernel - Re: [PATCH v2 2/2] test_power: Add CURRENT properties

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Date:   Mon, 14 Oct 2019 07:46:35 +0200
From:   Sebastian Reichel <sre@...nel.org>
To:     lecopzer@...il.com
Cc:     linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
        yj.chiang@...iatek.com, lecopzer.chen@...iatek.com
Subject: Re: [PATCH v2 2/2] test_power: Add CURRENT properties

Hi,

On Fri, Sep 13, 2019 at 02:26:00AM +0800, lecopzer@...il.com wrote:
> CURRENT is really general in other battery drivers,
> Android also has an interface to monitor CURRENT, so let's
> add it into test framework.
> 
> The default value (1.6A) is just a random but reasonable value.
> 
> Signed-off-by: Lecopzer Chen <lecopzer.chen@...iatek.com>
> ---

Thanks, queued.

-- Sebastian

>  drivers/power/supply/test_power.c | 31 +++++++++++++++++++++++++++++++
>  1 file changed, 31 insertions(+)
> 
> diff --git a/drivers/power/supply/test_power.c b/drivers/power/supply/test_power.c
> index 70db8d20e138..65c23ef6408d 100644
> --- a/drivers/power/supply/test_power.c
> +++ b/drivers/power/supply/test_power.c
> @@ -34,6 +34,7 @@ static int battery_technology		= POWER_SUPPLY_TECHNOLOGY_LION;
>  static int battery_capacity		= 50;
>  static int battery_voltage		= 3300;
>  static int battery_charge_counter	= -1000;
> +static int battery_current		= 1600;
>  
>  static bool module_initialized;
>  
> @@ -118,6 +119,10 @@ static int test_power_get_battery_property(struct power_supply *psy,
>  	case POWER_SUPPLY_PROP_VOLTAGE_NOW:
>  		val->intval = battery_voltage;
>  		break;
> +	case POWER_SUPPLY_PROP_CURRENT_AVG:
> +	case POWER_SUPPLY_PROP_CURRENT_NOW:
> +		val->intval = battery_current;
> +		break;
>  	default:
>  		pr_info("%s: some properties deliberately report errors.\n",
>  			__func__);
> @@ -149,6 +154,8 @@ static enum power_supply_property test_power_battery_props[] = {
>  	POWER_SUPPLY_PROP_SERIAL_NUMBER,
>  	POWER_SUPPLY_PROP_TEMP,
>  	POWER_SUPPLY_PROP_VOLTAGE_NOW,
> +	POWER_SUPPLY_PROP_CURRENT_AVG,
> +	POWER_SUPPLY_PROP_CURRENT_NOW,
>  };
>  
>  static char *test_power_ac_supplied_to[] = {
> @@ -467,6 +474,21 @@ static int param_set_battery_charge_counter(const char *key,
>  
>  #define param_get_battery_charge_counter param_get_int
>  
> +static int param_set_battery_current(const char *key,
> +					const struct kernel_param *kp)
> +{
> +	int tmp;
> +
> +	if (1 != sscanf(key, "%d", &tmp))
> +		return -EINVAL;
> +
> +	battery_current = tmp;
> +	signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
> +	return 0;
> +}
> +
> +#define param_get_battery_current param_get_int
> +
>  static const struct kernel_param_ops param_ops_ac_online = {
>  	.set = param_set_ac_online,
>  	.get = param_get_ac_online,
> @@ -512,6 +534,11 @@ static const struct kernel_param_ops param_ops_battery_charge_counter = {
>  	.get = param_get_battery_charge_counter,
>  };
>  
> +static const struct kernel_param_ops param_ops_battery_current = {
> +	.set = param_set_battery_current,
> +	.get = param_get_battery_current,
> +};
> +
>  #define param_check_ac_online(name, p) __param_check(name, p, void);
>  #define param_check_usb_online(name, p) __param_check(name, p, void);
>  #define param_check_battery_status(name, p) __param_check(name, p, void);
> @@ -521,6 +548,7 @@ static const struct kernel_param_ops param_ops_battery_charge_counter = {
>  #define param_check_battery_capacity(name, p) __param_check(name, p, void);
>  #define param_check_battery_voltage(name, p) __param_check(name, p, void);
>  #define param_check_battery_charge_counter(name, p) __param_check(name, p, void);
> +#define param_check_battery_current(name, p) __param_check(name, p, void);
>  
>  
>  module_param(ac_online, ac_online, 0644);
> @@ -555,6 +583,9 @@ module_param(battery_charge_counter, battery_charge_counter, 0644);
>  MODULE_PARM_DESC(battery_charge_counter,
>  	"battery charge counter (microampere-hours)");
>  
> +module_param(battery_current, battery_current, 0644);
> +MODULE_PARM_DESC(battery_current, "battery current (milliampere)");
> +
>  MODULE_DESCRIPTION("Power supply driver for testing");
>  MODULE_AUTHOR("Anton Vorontsov <cbouatmailru@...il.com>");
>  MODULE_LICENSE("GPL");
> -- 
> 2.17.1
> 

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