power_supply: Add boot and calibration attributes

Usually PMIC's come with coulomb counting mechanism which can be
used to implement a Fuel Gauginig solution in Software itself.
One of key input to these SW Fuel Gauge solutioons is the boot up
parameters like boot voltage and boot current.

This patch adds the VOLTAGE_BOOT and CURRENT_BOOT power supply attributes
to report bootup voltage and current.

This patch also adds CALIBRATE power supply attribute which useful is
for calibrating the battery/coulomb counter.

Signed-off-by: Ramakrishna Pallala <ramakrishna.pallala@intel.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>

diff --git a/Documentation/power/power_supply_class.txt b/Documentation/power/power_supply_class.txt
index 48cff881cb8a13aac48c4455ac44d44f685eaf46..82dacc06e355c1624ca66e5668448f1a767dbfa9 100644 (file)
--- a/Documentation/power/power_supply_class.txt
+++ b/Documentation/power/power_supply_class.txt
@@ -101,6 +101,10 @@ VOLTAGE_MAX, VOLTAGE_MIN - same as _DESIGN voltage values except that
 these ones should be used if hardware could only guess (measure and
 retain) the thresholds of a given power supply.
 
+VOLTAGE_BOOT - Reports the voltage measured during boot
+
+CURRENT_BOOT - Reports the current measured during boot
+
 CHARGE_FULL_DESIGN, CHARGE_EMPTY_DESIGN - design charge values, when
 battery considered full/empty.
 
@@ -123,6 +127,8 @@ the current drawn from a charging source.
 CHARGE_TERM_CURRENT - Charge termination current used to detect the end of charge
 condition.
 
+CALIBRATE - battery or coulomb counter calibration status
+
 CONSTANT_CHARGE_VOLTAGE - constant charge voltage programmed by charger.
 CONSTANT_CHARGE_VOLTAGE_MAX - maximum charge voltage supported by the
 power supply object.

diff --git a/drivers/power/power_supply_sysfs.c b/drivers/power/power_supply_sysfs.c
index 750a202756646bade62c4bfd24966f8659b29a68..7e4726d37211db376e72ca8e062180f79681ecf6 100644 (file)
--- a/drivers/power/power_supply_sysfs.c
+++ b/drivers/power/power_supply_sysfs.c
@@ -149,9 +149,11 @@ static struct device_attribute power_supply_attrs[] = {
        POWER_SUPPLY_ATTR(voltage_now),
        POWER_SUPPLY_ATTR(voltage_avg),
        POWER_SUPPLY_ATTR(voltage_ocv),
+       POWER_SUPPLY_ATTR(voltage_boot),
        POWER_SUPPLY_ATTR(current_max),
        POWER_SUPPLY_ATTR(current_now),
        POWER_SUPPLY_ATTR(current_avg),
+       POWER_SUPPLY_ATTR(current_boot),
        POWER_SUPPLY_ATTR(power_now),
        POWER_SUPPLY_ATTR(power_avg),
        POWER_SUPPLY_ATTR(charge_full_design),
@@ -193,6 +195,7 @@ static struct device_attribute power_supply_attrs[] = {
        POWER_SUPPLY_ATTR(type),
        POWER_SUPPLY_ATTR(scope),
        POWER_SUPPLY_ATTR(charge_term_current),
+       POWER_SUPPLY_ATTR(calibrate),
        /* Properties of type `const char *' */
        POWER_SUPPLY_ATTR(model_name),
        POWER_SUPPLY_ATTR(manufacturer),

diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index f3dea41dbcd2ef9220971ed43c7501277c2e850d..de59a28b1b5b019032e8a296c68831bdaee1ddc8 100644 (file)
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -102,9 +102,11 @@ enum power_supply_property {
        POWER_SUPPLY_PROP_VOLTAGE_NOW,
        POWER_SUPPLY_PROP_VOLTAGE_AVG,
        POWER_SUPPLY_PROP_VOLTAGE_OCV,
+       POWER_SUPPLY_PROP_VOLTAGE_BOOT,
        POWER_SUPPLY_PROP_CURRENT_MAX,
        POWER_SUPPLY_PROP_CURRENT_NOW,
        POWER_SUPPLY_PROP_CURRENT_AVG,
+       POWER_SUPPLY_PROP_CURRENT_BOOT,
        POWER_SUPPLY_PROP_POWER_NOW,
        POWER_SUPPLY_PROP_POWER_AVG,
        POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
@@ -146,6 +148,7 @@ enum power_supply_property {
        POWER_SUPPLY_PROP_TYPE, /* use power_supply.type instead */
        POWER_SUPPLY_PROP_SCOPE,
        POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT,
+       POWER_SUPPLY_PROP_CALIBRATE,
        /* Properties of type `const char *' */
        POWER_SUPPLY_PROP_MODEL_NAME,
        POWER_SUPPLY_PROP_MANUFACTURER,
@@ -291,6 +294,7 @@ static inline bool power_supply_is_amp_property(enum power_supply_property psp)
        case POWER_SUPPLY_PROP_CURRENT_MAX:
        case POWER_SUPPLY_PROP_CURRENT_NOW:
        case POWER_SUPPLY_PROP_CURRENT_AVG:
+       case POWER_SUPPLY_PROP_CURRENT_BOOT:
                return 1;
        default:
                break;
@@ -315,6 +319,7 @@ static inline bool power_supply_is_watt_property(enum power_supply_property psp)
        case POWER_SUPPLY_PROP_VOLTAGE_NOW:
        case POWER_SUPPLY_PROP_VOLTAGE_AVG:
        case POWER_SUPPLY_PROP_VOLTAGE_OCV:
+       case POWER_SUPPLY_PROP_VOLTAGE_BOOT:
        case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
        case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
        case POWER_SUPPLY_PROP_POWER_NOW: