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power supply and reset changes for the v3.18-rc

Browse Source 
- misc. charger-manager fixes
  - year 2038 fix in ab8500_fg
  - fix error handling of bq2415x_charger
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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
This commit is contained in:
Linus Torvalds 2014-11-15 15:22:51 -08:00
commit ec7de6567f
6 changed files with 144 additions and 72 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/power/ab8500_fg.c
View File

@ -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;

23
drivers/power/bq2415x_charger.c
View File

@ -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));
}

164
drivers/power/charger-manager.c
View File

@ -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
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);
if (cm->tzd_batt) {
ret = thermal_zone_get_temp(cm->tzd_batt, (unsigned long *)temp);
if (!ret)
/* Calibrate temperature unit */
*temp /= 100;
} 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 @@ err:
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;
}

3
drivers/power/power_supply_core.c
View File

@ -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) {

3
include/linux/power/charger-manager.h
View File

@ -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

6
include/linux/power_supply.h
View File

@ -200,6 +200,12 @@ struct power_supply {
void (*external_power_changed)(struct power_supply *psy);
void (*set_charged)(struct power_supply *psy);
/*
* Set if thermal zone should not be created for this power supply.
* For example for virtual supplies forwarding calls to actual
* sensors or other supplies.
*/
bool no_thermal;
/* For APM emulation, think legacy userspace. */
int use_for_apm;