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Commit ec7de656 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'for-v3.18-rc' of git://git.infradead.org/battery-2.6 

Pull power supply updates from Sebastian Reichel:
 "Power supply and reset changes for the v3.18-rc:

   - misc. charger-manager fixes
   - year 2038 fix in ab8500_fg
   - fix error handling of bq2415x_charger"

* tag 'for-v3.18-rc' of git://git.infradead.org/battery-2.6:
  power: charger-manager: Fix accessing invalidated power supply after charger unbind
  power: charger-manager: Fix accessing invalidated power supply after fuel gauge unbind
  power: charger-manager: Avoid recursive thermal get_temp call
  power_supply: Add no_thermal property to prevent recursive get_temp calls
  power: bq2415x_charger: Fix memory leak on DTS parsing error
  power: bq2415x_charger: Properly handle ENODEV from power_supply_get_by_phandle
  power: ab8500_fg.c: use 64-bit time types
parents e0611671 cdaf3e15

drivers/power/ab8500_fg.c

+9 −8
Original line number Diff line number Diff line
@@ -25,6 +25,7 @@ 
#include <linux/slab.h>

#include <linux/delay.h>

#include <linux/time.h>

#include <linux/time64.h>

#include <linux/of.h>

#include <linux/completion.h>

#include <linux/mfd/core.h>
@@ -108,7 +109,7 @@ enum ab8500_fg_calibration_state { 
struct ab8500_fg_avg_cap {

	int avg;

	int samples[NBR_AVG_SAMPLES];

	__kernel_time_t time_stamps[NBR_AVG_SAMPLES];

	time64_t time_stamps[NBR_AVG_SAMPLES];

	int pos;

	int nbr_samples;

	int sum;
@@ -386,15 +387,15 @@ static int ab8500_fg_is_low_curr(struct ab8500_fg *di, int curr) 
 */

static int ab8500_fg_add_cap_sample(struct ab8500_fg *di, int sample)

{

	struct timespec ts;

	struct timespec64 ts64;

	struct ab8500_fg_avg_cap *avg = &di->avg_cap;



	getnstimeofday(&ts);

	getnstimeofday64(&ts64);



	do {

		avg->sum += sample - avg->samples[avg->pos];

		avg->samples[avg->pos] = sample;

		avg->time_stamps[avg->pos] = ts.tv_sec;

		avg->time_stamps[avg->pos] = ts64.tv_sec;

		avg->pos++;



		if (avg->pos == NBR_AVG_SAMPLES)
@@ -407,7 +408,7 @@ static int ab8500_fg_add_cap_sample(struct ab8500_fg *di, int sample) 
		 * Check the time stamp for each sample. If too old,

		 * replace with latest sample

		 */

	} while (ts.tv_sec - VALID_CAPACITY_SEC > avg->time_stamps[avg->pos]);

	} while (ts64.tv_sec - VALID_CAPACITY_SEC > avg->time_stamps[avg->pos]);



	avg->avg = avg->sum / avg->nbr_samples;
@@ -446,14 +447,14 @@ static void ab8500_fg_clear_cap_samples(struct ab8500_fg *di) 
static void ab8500_fg_fill_cap_sample(struct ab8500_fg *di, int sample)

{

	int i;

	struct timespec ts;

	struct timespec64 ts64;

	struct ab8500_fg_avg_cap *avg = &di->avg_cap;



	getnstimeofday(&ts);

	getnstimeofday64(&ts64);



	for (i = 0; i < NBR_AVG_SAMPLES; i++) {

		avg->samples[i] = sample;

		avg->time_stamps[i] = ts.tv_sec;

		avg->time_stamps[i] = ts64.tv_sec;

	}



	avg->pos = 0;

drivers/power/bq2415x_charger.c

+15 −8
Original line number Diff line number Diff line
@@ -1579,8 +1579,15 @@ static int bq2415x_probe(struct i2c_client *client, 
	if (np) {

		bq->notify_psy = power_supply_get_by_phandle(np, "ti,usb-charger-detection");



		if (!bq->notify_psy)

			return -EPROBE_DEFER;

		if (IS_ERR(bq->notify_psy)) {

			dev_info(&client->dev,

				"no 'ti,usb-charger-detection' property (err=%ld)\n",

				PTR_ERR(bq->notify_psy));

			bq->notify_psy = NULL;

		} else if (!bq->notify_psy) {

			ret = -EPROBE_DEFER;

			goto error_2;

		}

	}

	else if (pdata->notify_device)

		bq->notify_psy = power_supply_get_by_name(pdata->notify_device);
@@ -1602,27 +1609,27 @@ static int bq2415x_probe(struct i2c_client *client, 
		ret = of_property_read_u32(np, "ti,current-limit",

				&bq->init_data.current_limit);

		if (ret)

			return ret;

			goto error_2;

		ret = of_property_read_u32(np, "ti,weak-battery-voltage",

				&bq->init_data.weak_battery_voltage);

		if (ret)

			return ret;

			goto error_2;

		ret = of_property_read_u32(np, "ti,battery-regulation-voltage",

				&bq->init_data.battery_regulation_voltage);

		if (ret)

			return ret;

			goto error_2;

		ret = of_property_read_u32(np, "ti,charge-current",

				&bq->init_data.charge_current);

		if (ret)

			return ret;

			goto error_2;

		ret = of_property_read_u32(np, "ti,termination-current",

				&bq->init_data.termination_current);

		if (ret)

			return ret;

			goto error_2;

		ret = of_property_read_u32(np, "ti,resistor-sense",

				&bq->init_data.resistor_sense);

		if (ret)

			return ret;

			goto error_2;

	} else {

		memcpy(&bq->init_data, pdata, sizeof(bq->init_data));

	}

drivers/power/charger-manager.c

+111 −53
Original line number Diff line number Diff line
@@ -97,6 +97,7 @@ static struct charger_global_desc *g_desc; /* init with setup_charger_manager */ 
static bool is_batt_present(struct charger_manager *cm)

{

	union power_supply_propval val;

	struct power_supply *psy;

	bool present = false;

	int i, ret;
@@ -107,16 +108,27 @@ static bool is_batt_present(struct charger_manager *cm) 
	case CM_NO_BATTERY:

		break;

	case CM_FUEL_GAUGE:

		ret = cm->fuel_gauge->get_property(cm->fuel_gauge,

		psy = power_supply_get_by_name(cm->desc->psy_fuel_gauge);

		if (!psy)

			break;



		ret = psy->get_property(psy,

				POWER_SUPPLY_PROP_PRESENT, &val);

		if (ret == 0 && val.intval)

			present = true;

		break;

	case CM_CHARGER_STAT:

		for (i = 0; cm->charger_stat[i]; i++) {

			ret = cm->charger_stat[i]->get_property(

					cm->charger_stat[i],

					POWER_SUPPLY_PROP_PRESENT, &val);

		for (i = 0; cm->desc->psy_charger_stat[i]; i++) {

			psy = power_supply_get_by_name(

					cm->desc->psy_charger_stat[i]);

			if (!psy) {

				dev_err(cm->dev, "Cannot find power supply \"%s\"\n",

					cm->desc->psy_charger_stat[i]);

				continue;

			}



			ret = psy->get_property(psy, POWER_SUPPLY_PROP_PRESENT,

					&val);

			if (ret == 0 && val.intval) {

				present = true;

				break;
@@ -139,14 +151,20 @@ static bool is_batt_present(struct charger_manager *cm) 
static bool is_ext_pwr_online(struct charger_manager *cm)

{

	union power_supply_propval val;

	struct power_supply *psy;

	bool online = false;

	int i, ret;



	/* If at least one of them has one, it's yes. */

	for (i = 0; cm->charger_stat[i]; i++) {

		ret = cm->charger_stat[i]->get_property(

				cm->charger_stat[i],

				POWER_SUPPLY_PROP_ONLINE, &val);

	for (i = 0; cm->desc->psy_charger_stat[i]; i++) {

		psy = power_supply_get_by_name(cm->desc->psy_charger_stat[i]);

		if (!psy) {

			dev_err(cm->dev, "Cannot find power supply \"%s\"\n",

					cm->desc->psy_charger_stat[i]);

			continue;

		}



		ret = psy->get_property(psy, POWER_SUPPLY_PROP_ONLINE, &val);

		if (ret == 0 && val.intval) {

			online = true;

			break;
@@ -167,12 +185,14 @@ static bool is_ext_pwr_online(struct charger_manager *cm) 
static int get_batt_uV(struct charger_manager *cm, int *uV)

{

	union power_supply_propval val;

	struct power_supply *fuel_gauge;

	int ret;



	if (!cm->fuel_gauge)

	fuel_gauge = power_supply_get_by_name(cm->desc->psy_fuel_gauge);

	if (!fuel_gauge)

		return -ENODEV;



	ret = cm->fuel_gauge->get_property(cm->fuel_gauge,

	ret = fuel_gauge->get_property(fuel_gauge,

				POWER_SUPPLY_PROP_VOLTAGE_NOW, &val);

	if (ret)

		return ret;
@@ -189,6 +209,7 @@ static bool is_charging(struct charger_manager *cm) 
{

	int i, ret;

	bool charging = false;

	struct power_supply *psy;

	union power_supply_propval val;



	/* If there is no battery, it cannot be charged */
@@ -196,17 +217,22 @@ static bool is_charging(struct charger_manager *cm) 
		return false;



	/* If at least one of the charger is charging, return yes */

	for (i = 0; cm->charger_stat[i]; i++) {

	for (i = 0; cm->desc->psy_charger_stat[i]; i++) {

		/* 1. The charger sholuld not be DISABLED */

		if (cm->emergency_stop)

			continue;

		if (!cm->charger_enabled)

			continue;



		psy = power_supply_get_by_name(cm->desc->psy_charger_stat[i]);

		if (!psy) {

			dev_err(cm->dev, "Cannot find power supply \"%s\"\n",

					cm->desc->psy_charger_stat[i]);

			continue;

		}



		/* 2. The charger should be online (ext-power) */

		ret = cm->charger_stat[i]->get_property(

				cm->charger_stat[i],

				POWER_SUPPLY_PROP_ONLINE, &val);

		ret = psy->get_property(psy, POWER_SUPPLY_PROP_ONLINE, &val);

		if (ret) {

			dev_warn(cm->dev, "Cannot read ONLINE value from %s\n",

				 cm->desc->psy_charger_stat[i]);
@@ -219,9 +245,7 @@ static bool is_charging(struct charger_manager *cm) 
		 * 3. The charger should not be FULL, DISCHARGING,

		 * or NOT_CHARGING.

		 */

		ret = cm->charger_stat[i]->get_property(

				cm->charger_stat[i],

				POWER_SUPPLY_PROP_STATUS, &val);

		ret = psy->get_property(psy, POWER_SUPPLY_PROP_STATUS, &val);

		if (ret) {

			dev_warn(cm->dev, "Cannot read STATUS value from %s\n",

				 cm->desc->psy_charger_stat[i]);
@@ -248,6 +272,7 @@ static bool is_full_charged(struct charger_manager *cm) 
{

	struct charger_desc *desc = cm->desc;

	union power_supply_propval val;

	struct power_supply *fuel_gauge;

	int ret = 0;

	int uV;
@@ -255,11 +280,15 @@ static bool is_full_charged(struct charger_manager *cm) 
	if (!is_batt_present(cm))

		return false;



	if (cm->fuel_gauge && desc->fullbatt_full_capacity > 0) {

	fuel_gauge = power_supply_get_by_name(cm->desc->psy_fuel_gauge);

	if (!fuel_gauge)

		return false;



	if (desc->fullbatt_full_capacity > 0) {

		val.intval = 0;



		/* Not full if capacity of fuel gauge isn't full */

		ret = cm->fuel_gauge->get_property(cm->fuel_gauge,

		ret = fuel_gauge->get_property(fuel_gauge,

				POWER_SUPPLY_PROP_CHARGE_FULL, &val);

		if (!ret && val.intval > desc->fullbatt_full_capacity)

			return true;
@@ -273,10 +302,10 @@ static bool is_full_charged(struct charger_manager *cm) 
	}



	/* Full, if the capacity is more than fullbatt_soc */

	if (cm->fuel_gauge && desc->fullbatt_soc > 0) {

	if (desc->fullbatt_soc > 0) {

		val.intval = 0;



		ret = cm->fuel_gauge->get_property(cm->fuel_gauge,

		ret = fuel_gauge->get_property(fuel_gauge,

				POWER_SUPPLY_PROP_CAPACITY, &val);

		if (!ret && val.intval >= desc->fullbatt_soc)

			return true;
@@ -551,6 +580,20 @@ static int check_charging_duration(struct charger_manager *cm) 
	return ret;

}



static int cm_get_battery_temperature_by_psy(struct charger_manager *cm,

					int *temp)

{

	struct power_supply *fuel_gauge;



	fuel_gauge = power_supply_get_by_name(cm->desc->psy_fuel_gauge);

	if (!fuel_gauge)

		return -ENODEV;



	return fuel_gauge->get_property(fuel_gauge,

				POWER_SUPPLY_PROP_TEMP,

				(union power_supply_propval *)temp);

}



static int cm_get_battery_temperature(struct charger_manager *cm,

					int *temp)

{
@@ -560,15 +603,18 @@ static int cm_get_battery_temperature(struct charger_manager *cm, 
		return -ENODEV;



#ifdef CONFIG_THERMAL

	if (cm->tzd_batt) {

		ret = thermal_zone_get_temp(cm->tzd_batt, (unsigned long *)temp);

		if (!ret)

			/* Calibrate temperature unit */

			*temp /= 100;

#else

	ret = cm->fuel_gauge->get_property(cm->fuel_gauge,

				POWER_SUPPLY_PROP_TEMP,

				(union power_supply_propval *)temp);

	} else

#endif

	{

		/* if-else continued from CONFIG_THERMAL */

		ret = cm_get_battery_temperature_by_psy(cm, temp);

	}



	return ret;

}
@@ -827,6 +873,7 @@ static int charger_get_property(struct power_supply *psy, 
	struct charger_manager *cm = container_of(psy,

			struct charger_manager, charger_psy);

	struct charger_desc *desc = cm->desc;

	struct power_supply *fuel_gauge;

	int ret = 0;

	int uV;
@@ -857,14 +904,20 @@ static int charger_get_property(struct power_supply *psy, 
		ret = get_batt_uV(cm, &val->intval);

		break;

	case POWER_SUPPLY_PROP_CURRENT_NOW:

		ret = cm->fuel_gauge->get_property(cm->fuel_gauge,

		fuel_gauge = power_supply_get_by_name(cm->desc->psy_fuel_gauge);

		if (!fuel_gauge) {

			ret = -ENODEV;

			break;

		}

		ret = fuel_gauge->get_property(fuel_gauge,

				POWER_SUPPLY_PROP_CURRENT_NOW, val);

		break;

	case POWER_SUPPLY_PROP_TEMP:

	case POWER_SUPPLY_PROP_TEMP_AMBIENT:

		return cm_get_battery_temperature(cm, &val->intval);

	case POWER_SUPPLY_PROP_CAPACITY:

		if (!cm->fuel_gauge) {

		fuel_gauge = power_supply_get_by_name(cm->desc->psy_fuel_gauge);

		if (!fuel_gauge) {

			ret = -ENODEV;

			break;

		}
@@ -875,7 +928,7 @@ static int charger_get_property(struct power_supply *psy, 
			break;

		}



		ret = cm->fuel_gauge->get_property(cm->fuel_gauge,

		ret = fuel_gauge->get_property(fuel_gauge,

					POWER_SUPPLY_PROP_CAPACITY, val);

		if (ret)

			break;
@@ -924,7 +977,14 @@ static int charger_get_property(struct power_supply *psy, 
		break;

	case POWER_SUPPLY_PROP_CHARGE_NOW:

		if (is_charging(cm)) {

			ret = cm->fuel_gauge->get_property(cm->fuel_gauge,

			fuel_gauge = power_supply_get_by_name(

					cm->desc->psy_fuel_gauge);

			if (!fuel_gauge) {

				ret = -ENODEV;

				break;

			}



			ret = fuel_gauge->get_property(fuel_gauge,

						POWER_SUPPLY_PROP_CHARGE_NOW,

						val);

			if (ret) {
@@ -970,6 +1030,7 @@ static struct power_supply psy_default = { 
	.properties = default_charger_props,

	.num_properties = ARRAY_SIZE(default_charger_props),

	.get_property = charger_get_property,

	.no_thermal = true,

};



/**
@@ -1485,14 +1546,15 @@ static int charger_manager_register_sysfs(struct charger_manager *cm) 
	return ret;

}



static int cm_init_thermal_data(struct charger_manager *cm)

static int cm_init_thermal_data(struct charger_manager *cm,

		struct power_supply *fuel_gauge)

{

	struct charger_desc *desc = cm->desc;

	union power_supply_propval val;

	int ret;



	/* Verify whether fuel gauge provides battery temperature */

	ret = cm->fuel_gauge->get_property(cm->fuel_gauge,

	ret = fuel_gauge->get_property(fuel_gauge,

					POWER_SUPPLY_PROP_TEMP, &val);



	if (!ret) {
@@ -1502,8 +1564,6 @@ static int cm_init_thermal_data(struct charger_manager *cm) 
		cm->desc->measure_battery_temp = true;

	}

#ifdef CONFIG_THERMAL

	cm->tzd_batt = cm->fuel_gauge->tzd;



	if (ret && desc->thermal_zone) {

		cm->tzd_batt =

			thermal_zone_get_zone_by_name(desc->thermal_zone);
@@ -1666,6 +1726,7 @@ static int charger_manager_probe(struct platform_device *pdev) 
	int ret = 0, i = 0;

	int j = 0;

	union power_supply_propval val;

	struct power_supply *fuel_gauge;



	if (g_desc && !rtc_dev && g_desc->rtc_name) {

		rtc_dev = rtc_class_open(g_desc->rtc_name);
@@ -1729,23 +1790,20 @@ static int charger_manager_probe(struct platform_device *pdev) 
	while (desc->psy_charger_stat[i])

		i++;



	cm->charger_stat = devm_kzalloc(&pdev->dev,

				sizeof(struct power_supply *) * i, GFP_KERNEL);

	if (!cm->charger_stat)

		return -ENOMEM;



	/* Check if charger's supplies are present at probe */

	for (i = 0; desc->psy_charger_stat[i]; i++) {

		cm->charger_stat[i] = power_supply_get_by_name(

					desc->psy_charger_stat[i]);

		if (!cm->charger_stat[i]) {

		struct power_supply *psy;



		psy = power_supply_get_by_name(desc->psy_charger_stat[i]);

		if (!psy) {

			dev_err(&pdev->dev, "Cannot find power supply \"%s\"\n",

				desc->psy_charger_stat[i]);

			return -ENODEV;

		}

	}



	cm->fuel_gauge = power_supply_get_by_name(desc->psy_fuel_gauge);

	if (!cm->fuel_gauge) {

	fuel_gauge = power_supply_get_by_name(desc->psy_fuel_gauge);

	if (!fuel_gauge) {

		dev_err(&pdev->dev, "Cannot find power supply \"%s\"\n",

			desc->psy_fuel_gauge);

		return -ENODEV;
@@ -1788,13 +1846,13 @@ static int charger_manager_probe(struct platform_device *pdev) 
	cm->charger_psy.num_properties = psy_default.num_properties;



	/* Find which optional psy-properties are available */

	if (!cm->fuel_gauge->get_property(cm->fuel_gauge,

	if (!fuel_gauge->get_property(fuel_gauge,

					  POWER_SUPPLY_PROP_CHARGE_NOW, &val)) {

		cm->charger_psy.properties[cm->charger_psy.num_properties] =

				POWER_SUPPLY_PROP_CHARGE_NOW;

		cm->charger_psy.num_properties++;

	}

	if (!cm->fuel_gauge->get_property(cm->fuel_gauge,

	if (!fuel_gauge->get_property(fuel_gauge,

					  POWER_SUPPLY_PROP_CURRENT_NOW,

					  &val)) {

		cm->charger_psy.properties[cm->charger_psy.num_properties] =
@@ -1802,7 +1860,7 @@ static int charger_manager_probe(struct platform_device *pdev) 
		cm->charger_psy.num_properties++;

	}



	ret = cm_init_thermal_data(cm);

	ret = cm_init_thermal_data(cm, fuel_gauge);

	if (ret) {

		dev_err(&pdev->dev, "Failed to initialize thermal data\n");

		cm->desc->measure_battery_temp = false;
@@ -2066,8 +2124,8 @@ static bool find_power_supply(struct charger_manager *cm, 
	int i;

	bool found = false;



	for (i = 0; cm->charger_stat[i]; i++) {

		if (psy == cm->charger_stat[i]) {

	for (i = 0; cm->desc->psy_charger_stat[i]; i++) {

		if (!strcmp(psy->name, cm->desc->psy_charger_stat[i])) {

			found = true;

			break;

		}

drivers/power/power_supply_core.c

+3 −0
Original line number Diff line number Diff line
@@ -417,6 +417,9 @@ static int psy_register_thermal(struct power_supply *psy) 
{

	int i;



	if (psy->no_thermal)

		return 0;



	/* Register battery zone device psy reports temperature */

	for (i = 0; i < psy->num_properties; i++) {

		if (psy->properties[i] == POWER_SUPPLY_PROP_TEMP) {

include/linux/power/charger-manager.h

+0 −3
Original line number Diff line number Diff line
@@ -253,9 +253,6 @@ struct charger_manager { 
	struct device *dev;

	struct charger_desc *desc;



	struct power_supply *fuel_gauge;

	struct power_supply **charger_stat;



#ifdef CONFIG_THERMAL

	struct thermal_zone_device *tzd_batt;

#endif