--- /dev/null
+OLPC battery
+~~~~~~~~~~~~
+
+Required properties:
+ - compatible : "olpc,xo1-battery"
--- /dev/null
+SBS sbs-battery
+~~~~~~~~~~
+
+Required properties :
+ - compatible : "sbs,sbs-battery"
+
+Optional properties :
+ - sbs,i2c-retry-count : The number of times to retry i2c transactions on i2c
+ IO failure.
+ - sbs,poll-retry-count : The number of times to try looking for new status
+ after an external change notification.
+ - sbs,battery-detect-gpios : The gpio which signals battery detection and
+ a flag specifying its polarity.
+
+Example:
+
+ bq20z75@b {
+ compatible = "sbs,sbs-battery";
+ reg = < 0xb >;
+ sbs,i2c-retry-count = <2>;
+ sbs,poll-retry-count = <10>;
+ sbs,battery-detect-gpios = <&gpio-controller 122 1>;
+ }
qcom Qualcomm, Inc.
ramtron Ramtron International
samsung Samsung Semiconductor
+sbs Smart Battery System
schindler Schindler
simtek
sirf SiRF Technology, Inc.
--- /dev/null
+Charger Manager
+ (C) 2011 MyungJoo Ham <myungjoo.ham@samsung.com>, GPL
+
+Charger Manager provides in-kernel battery charger management that
+requires temperature monitoring during suspend-to-RAM state
+and where each battery may have multiple chargers attached and the userland
+wants to look at the aggregated information of the multiple chargers.
+
+Charger Manager is a platform_driver with power-supply-class entries.
+An instance of Charger Manager (a platform-device created with Charger-Manager)
+represents an independent battery with chargers. If there are multiple
+batteries with their own chargers acting independently in a system,
+the system may need multiple instances of Charger Manager.
+
+1. Introduction
+===============
+
+Charger Manager supports the following:
+
+* Support for multiple chargers (e.g., a device with USB, AC, and solar panels)
+ A system may have multiple chargers (or power sources) and some of
+ they may be activated at the same time. Each charger may have its
+ own power-supply-class and each power-supply-class can provide
+ different information about the battery status. This framework
+ aggregates charger-related information from multiple sources and
+ shows combined information as a single power-supply-class.
+
+* Support for in suspend-to-RAM polling (with suspend_again callback)
+ While the battery is being charged and the system is in suspend-to-RAM,
+ we may need to monitor the battery health by looking at the ambient or
+ battery temperature. We can accomplish this by waking up the system
+ periodically. However, such a method wakes up devices unncessary for
+ monitoring the battery health and tasks, and user processes that are
+ supposed to be kept suspended. That, in turn, incurs unnecessary power
+ consumption and slow down charging process. Or even, such peak power
+ consumption can stop chargers in the middle of charging
+ (external power input < device power consumption), which not
+ only affects the charging time, but the lifespan of the battery.
+
+ Charger Manager provides a function "cm_suspend_again" that can be
+ used as suspend_again callback of platform_suspend_ops. If the platform
+ requires tasks other than cm_suspend_again, it may implement its own
+ suspend_again callback that calls cm_suspend_again in the middle.
+ Normally, the platform will need to resume and suspend some devices
+ that are used by Charger Manager.
+
+2. Global Charger-Manager Data related with suspend_again
+========================================================
+In order to setup Charger Manager with suspend-again feature
+(in-suspend monitoring), the user should provide charger_global_desc
+with setup_charger_manager(struct charger_global_desc *).
+This charger_global_desc data for in-suspend monitoring is global
+as the name suggests. Thus, the user needs to provide only once even
+if there are multiple batteries. If there are multiple batteries, the
+multiple instances of Charger Manager share the same charger_global_desc
+and it will manage in-suspend monitoring for all instances of Charger Manager.
+
+The user needs to provide all the two entries properly in order to activate
+in-suspend monitoring:
+
+struct charger_global_desc {
+
+char *rtc_name;
+ : The name of rtc (e.g., "rtc0") used to wakeup the system from
+ suspend for Charger Manager. The alarm interrupt (AIE) of the rtc
+ should be able to wake up the system from suspend. Charger Manager
+ saves and restores the alarm value and use the previously-defined
+ alarm if it is going to go off earlier than Charger Manager so that
+ Charger Manager does not interfere with previously-defined alarms.
+
+bool (*rtc_only_wakeup)(void);
+ : This callback should let CM know whether
+ the wakeup-from-suspend is caused only by the alarm of "rtc" in the
+ same struct. If there is any other wakeup source triggered the
+ wakeup, it should return false. If the "rtc" is the only wakeup
+ reason, it should return true.
+};
+
+3. How to setup suspend_again
+=============================
+Charger Manager provides a function "extern bool cm_suspend_again(void)".
+When cm_suspend_again is called, it monitors every battery. The suspend_ops
+callback of the system's platform_suspend_ops can call cm_suspend_again
+function to know whether Charger Manager wants to suspend again or not.
+If there are no other devices or tasks that want to use suspend_again
+feature, the platform_suspend_ops may directly refer to cm_suspend_again
+for its suspend_again callback.
+
+The cm_suspend_again() returns true (meaning "I want to suspend again")
+if the system was woken up by Charger Manager and the polling
+(in-suspend monitoring) results in "normal".
+
+4. Charger-Manager Data (struct charger_desc)
+=============================================
+For each battery charged independently from other batteries (if a series of
+batteries are charged by a single charger, they are counted as one independent
+battery), an instance of Charger Manager is attached to it.
+
+struct charger_desc {
+
+char *psy_name;
+ : The power-supply-class name of the battery. Default is
+ "battery" if psy_name is NULL. Users can access the psy entries
+ at "/sys/class/power_supply/[psy_name]/".
+
+enum polling_modes polling_mode;
+ : CM_POLL_DISABLE: do not poll this battery.
+ CM_POLL_ALWAYS: always poll this battery.
+ CM_POLL_EXTERNAL_POWER_ONLY: poll this battery if and only if
+ an external power source is attached.
+ CM_POLL_CHARGING_ONLY: poll this battery if and only if the
+ battery is being charged.
+
+unsigned int fullbatt_uV;
+ : If specified with a non-zero value, Charger Manager assumes
+ that the battery is full (capacity = 100) if the battery is not being
+ charged and the battery voltage is equal to or greater than
+ fullbatt_uV.
+
+unsigned int polling_interval_ms;
+ : Required polling interval in ms. Charger Manager will poll
+ this battery every polling_interval_ms or more frequently.
+
+enum data_source battery_present;
+ CM_FUEL_GAUGE: get battery presence information from fuel gauge.
+ CM_CHARGER_STAT: get battery presence from chargers.
+
+char **psy_charger_stat;
+ : An array ending with NULL that has power-supply-class names of
+ chargers. Each power-supply-class should provide "PRESENT" (if
+ battery_present is "CM_CHARGER_STAT"), "ONLINE" (shows whether an
+ external power source is attached or not), and "STATUS" (shows whether
+ the battery is {"FULL" or not FULL} or {"FULL", "Charging",
+ "Discharging", "NotCharging"}).
+
+int num_charger_regulators;
+struct regulator_bulk_data *charger_regulators;
+ : Regulators representing the chargers in the form for
+ regulator framework's bulk functions.
+
+char *psy_fuel_gauge;
+ : Power-supply-class name of the fuel gauge.
+
+int (*temperature_out_of_range)(int *mC);
+bool measure_battery_temp;
+ : This callback returns 0 if the temperature is safe for charging,
+ a positive number if it is too hot to charge, and a negative number
+ if it is too cold to charge. With the variable mC, the callback returns
+ the temperature in 1/1000 of centigrade.
+ The source of temperature can be battery or ambient one according to
+ the value of measure_battery_temp.
+};
+
+5. Other Considerations
+=======================
+
+At the charger/battery-related events such as battery-pulled-out,
+charger-pulled-out, charger-inserted, DCIN-over/under-voltage, charger-stopped,
+and others critical to chargers, the system should be configured to wake up.
+At least the following should wake up the system from a suspend:
+a) charger-on/off b) external-power-in/out c) battery-in/out (while charging)
+
+It is usually accomplished by configuring the PMIC as a wakeup source.
},
#endif
{
+ I2C_BOARD_INFO("bq27200", 0x55),
+ },
+ {
I2C_BOARD_INFO("tpa6130a2", 0x60),
.platform_data = &rx51_tpa6130a2_data,
}
static enum power_supply_property wacom_battery_props[] = {
POWER_SUPPLY_PROP_PRESENT,
- POWER_SUPPLY_PROP_CAPACITY
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_SCOPE,
};
static enum power_supply_property wacom_ac_props[] = {
POWER_SUPPLY_PROP_PRESENT,
- POWER_SUPPLY_PROP_ONLINE
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_SCOPE,
};
static int wacom_battery_get_property(struct power_supply *psy,
case POWER_SUPPLY_PROP_PRESENT:
val->intval = 1;
break;
+ case POWER_SUPPLY_PROP_SCOPE:
+ val->intval = POWER_SUPPLY_SCOPE_DEVICE;
+ break;
case POWER_SUPPLY_PROP_CAPACITY:
/* show 100% battery capacity when charging */
if (power_state == 0)
else
val->intval = 0;
break;
+ case POWER_SUPPLY_PROP_SCOPE:
+ val->intval = POWER_SUPPLY_SCOPE_DEVICE;
+ break;
default:
ret = -EINVAL;
break;
wdata->battery.type = POWER_SUPPLY_TYPE_BATTERY;
wdata->battery.use_for_apm = 0;
+ power_supply_powers(&wdata->battery, &hdev->dev);
+
ret = power_supply_register(&hdev->dev, &wdata->battery);
if (ret) {
hid_warn(hdev, "can't create sysfs battery attribute, err: %d\n",
wdata->ac.type = POWER_SUPPLY_TYPE_MAINS;
wdata->ac.use_for_apm = 0;
+ power_supply_powers(&wdata->battery, &hdev->dev);
+
ret = power_supply_register(&hdev->dev, &wdata->ac);
if (ret) {
hid_warn(hdev,
};
static enum power_supply_property wiimote_battery_props[] = {
- POWER_SUPPLY_PROP_CAPACITY
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_SCOPE,
};
/* requires the state.lock spinlock to be held */
int ret = 0, state;
unsigned long flags;
+ if (psp == POWER_SUPPLY_PROP_SCOPE) {
+ val->intval = POWER_SUPPLY_SCOPE_DEVICE;
+ return 0;
+ }
+
ret = wiimote_cmd_acquire(wdata);
if (ret)
return ret;
wdata->battery.type = POWER_SUPPLY_TYPE_BATTERY;
wdata->battery.use_for_apm = 0;
+ power_supply_powers(&wdata->battery, &hdev->dev);
+
ret = power_supply_register(&wdata->hdev->dev, &wdata->battery);
if (ret) {
hid_err(hdev, "Cannot register battery device\n");
.mask_reg = MAX8925_CHG_IRQ1_MASK,
.offs = 1 << 2,
},
- [MAX8925_IRQ_VCHG_USB_OVP] = {
- .reg = MAX8925_CHG_IRQ1,
- .mask_reg = MAX8925_CHG_IRQ1_MASK,
- .offs = 1 << 3,
- },
- [MAX8925_IRQ_VCHG_USB_F] = {
- .reg = MAX8925_CHG_IRQ1,
- .mask_reg = MAX8925_CHG_IRQ1_MASK,
- .offs = 1 << 4,
- },
- [MAX8925_IRQ_VCHG_USB_R] = {
- .reg = MAX8925_CHG_IRQ1,
- .mask_reg = MAX8925_CHG_IRQ1_MASK,
- .offs = 1 << 5,
- },
[MAX8925_IRQ_VCHG_THM_OK_R] = {
.reg = MAX8925_CHG_IRQ2,
.mask_reg = MAX8925_CHG_IRQ2_MASK,
help
Say Y to enable support for battery measured by WM97xx aux port.
-config BATTERY_BQ20Z75
- tristate "TI BQ20z75 gas gauge"
+config BATTERY_SBS
+ tristate "SBS Compliant gas gauge"
depends on I2C
help
- Say Y to include support for TI BQ20z75 SBS-compliant
- gas gauge and protection IC.
+ Say Y to include support for SBS battery driver for SBS-compliant
+ gas gauges.
config BATTERY_BQ27x00
tristate "BQ27x00 battery driver"
Say Y here to enable support for batteries charger integrated into
DA9030 PMIC.
+config BATTERY_DA9052
+ tristate "Dialog DA9052 Battery"
+ depends on PMIC_DA9052
+ depends on BROKEN
+ help
+ Say Y here to enable support for batteries charger integrated into
+ DA9052 PMIC.
+
config BATTERY_MAX17040
tristate "Maxim MAX17040 Fuel Gauge"
depends on I2C
help
Say Y here to enable support for TWL4030 Battery Charge Interface.
+config CHARGER_LP8727
+ tristate "National Semiconductor LP8727 charger driver"
+ depends on I2C
+ help
+ Say Y here to enable support for LP8727 Charger Driver.
+
config CHARGER_GPIO
tristate "GPIO charger"
depends on GPIOLIB
This driver can be build as a module. If so, the module will be
called gpio-charger.
+config CHARGER_MANAGER
+ bool "Battery charger manager for multiple chargers"
+ depends on REGULATOR && RTC_CLASS
+ help
+ Say Y to enable charger-manager support, which allows multiple
+ chargers attached to a battery and multiple batteries attached to a
+ system. The charger-manager also can monitor charging status in
+ runtime and in suspend-to-RAM by waking up the system periodically
+ with help of suspend_again support.
+
config CHARGER_MAX8997
tristate "Maxim MAX8997/MAX8966 PMIC battery charger driver"
depends on MFD_MAX8997 && REGULATOR_MAX8997
obj-$(CONFIG_BATTERY_TOSA) += tosa_battery.o
obj-$(CONFIG_BATTERY_COLLIE) += collie_battery.o
obj-$(CONFIG_BATTERY_WM97XX) += wm97xx_battery.o
-obj-$(CONFIG_BATTERY_BQ20Z75) += bq20z75.o
+obj-$(CONFIG_BATTERY_SBS) += sbs-battery.o
obj-$(CONFIG_BATTERY_BQ27x00) += bq27x00_battery.o
obj-$(CONFIG_BATTERY_DA9030) += da9030_battery.o
+obj-$(CONFIG_BATTERY_DA9052) += da9052-battery.o
obj-$(CONFIG_BATTERY_MAX17040) += max17040_battery.o
obj-$(CONFIG_BATTERY_MAX17042) += max17042_battery.o
obj-$(CONFIG_BATTERY_Z2) += z2_battery.o
obj-$(CONFIG_CHARGER_ISP1704) += isp1704_charger.o
obj-$(CONFIG_CHARGER_MAX8903) += max8903_charger.o
obj-$(CONFIG_CHARGER_TWL4030) += twl4030_charger.o
+obj-$(CONFIG_CHARGER_LP8727) += lp8727_charger.o
obj-$(CONFIG_CHARGER_GPIO) += gpio-charger.o
+obj-$(CONFIG_CHARGER_MANAGER) += charger-manager.o
obj-$(CONFIG_CHARGER_MAX8997) += max8997_charger.o
obj-$(CONFIG_CHARGER_MAX8998) += max8998_charger.o
#define BQ27000_REG_RSOC 0x0B /* Relative State-of-Charge */
#define BQ27000_REG_ILMD 0x76 /* Initial last measured discharge */
-#define BQ27000_FLAG_CHGS BIT(7)
+#define BQ27000_FLAG_EDVF BIT(0) /* Final End-of-Discharge-Voltage flag */
+#define BQ27000_FLAG_EDV1 BIT(1) /* First End-of-Discharge-Voltage flag */
+#define BQ27000_FLAG_CI BIT(4) /* Capacity Inaccurate flag */
#define BQ27000_FLAG_FC BIT(5)
+#define BQ27000_FLAG_CHGS BIT(7) /* Charge state flag */
#define BQ27500_REG_SOC 0x2C
#define BQ27500_REG_DCAP 0x3C /* Design capacity */
-#define BQ27500_FLAG_DSC BIT(0)
-#define BQ27500_FLAG_FC BIT(9)
+#define BQ27500_FLAG_DSG BIT(0) /* Discharging */
+#define BQ27500_FLAG_SOCF BIT(1) /* State-of-Charge threshold final */
+#define BQ27500_FLAG_SOC1 BIT(2) /* State-of-Charge threshold 1 */
+#define BQ27500_FLAG_CHG BIT(8) /* Charging */
+#define BQ27500_FLAG_FC BIT(9) /* Fully charged */
#define BQ27000_RS 20 /* Resistor sense */
int charge_full;
int cycle_count;
int capacity;
+ int energy;
int flags;
-
- int current_now;
};
struct bq27x00_device_info {
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_CURRENT_NOW,
POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_CAPACITY_LEVEL,
POWER_SUPPLY_PROP_TEMP,
POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
rsoc = bq27x00_read(di, BQ27000_REG_RSOC, true);
if (rsoc < 0)
- dev_err(di->dev, "error reading relative State-of-Charge\n");
+ dev_dbg(di->dev, "error reading relative State-of-Charge\n");
return rsoc;
}
charge = bq27x00_read(di, reg, false);
if (charge < 0) {
- dev_err(di->dev, "error reading nominal available capacity\n");
+ dev_dbg(di->dev, "error reading charge register %02x: %d\n",
+ reg, charge);
return charge;
}
ilmd = bq27x00_read(di, BQ27000_REG_ILMD, true);
if (ilmd < 0) {
- dev_err(di->dev, "error reading initial last measured discharge\n");
+ dev_dbg(di->dev, "error reading initial last measured discharge\n");
return ilmd;
}
}
/*
+ * Return the battery Available energy in µWh
+ * Or < 0 if something fails.
+ */
+static int bq27x00_battery_read_energy(struct bq27x00_device_info *di)
+{
+ int ae;
+
+ ae = bq27x00_read(di, BQ27x00_REG_AE, false);
+ if (ae < 0) {
+ dev_dbg(di->dev, "error reading available energy\n");
+ return ae;
+ }
+
+ if (di->chip == BQ27500)
+ ae *= 1000;
+ else
+ ae = ae * 29200 / BQ27000_RS;
+
+ return ae;
+}
+
+/*
+ * Return the battery temperature in tenths of degree Celsius
+ * Or < 0 if something fails.
+ */
+static int bq27x00_battery_read_temperature(struct bq27x00_device_info *di)
+{
+ int temp;
+
+ temp = bq27x00_read(di, BQ27x00_REG_TEMP, false);
+ if (temp < 0) {
+ dev_err(di->dev, "error reading temperature\n");
+ return temp;
+ }
+
+ if (di->chip == BQ27500)
+ temp -= 2731;
+ else
+ temp = ((temp * 5) - 5463) / 2;
+
+ return temp;
+}
+
+/*
* Return the battery Cycle count total
* Or < 0 if something fails.
*/
tval = bq27x00_read(di, reg, false);
if (tval < 0) {
- dev_err(di->dev, "error reading register %02x: %d\n", reg, tval);
+ dev_dbg(di->dev, "error reading time register %02x: %d\n",
+ reg, tval);
return tval;
}
cache.flags = bq27x00_read(di, BQ27x00_REG_FLAGS, is_bq27500);
if (cache.flags >= 0) {
- cache.capacity = bq27x00_battery_read_rsoc(di);
- cache.temperature = bq27x00_read(di, BQ27x00_REG_TEMP, false);
- cache.time_to_empty = bq27x00_battery_read_time(di, BQ27x00_REG_TTE);
- cache.time_to_empty_avg = bq27x00_battery_read_time(di, BQ27x00_REG_TTECP);
- cache.time_to_full = bq27x00_battery_read_time(di, BQ27x00_REG_TTF);
- cache.charge_full = bq27x00_battery_read_lmd(di);
+ if (!is_bq27500 && (cache.flags & BQ27000_FLAG_CI)) {
+ dev_info(di->dev, "battery is not calibrated! ignoring capacity values\n");
+ cache.capacity = -ENODATA;
+ cache.energy = -ENODATA;
+ cache.time_to_empty = -ENODATA;
+ cache.time_to_empty_avg = -ENODATA;
+ cache.time_to_full = -ENODATA;
+ cache.charge_full = -ENODATA;
+ } else {
+ cache.capacity = bq27x00_battery_read_rsoc(di);
+ cache.energy = bq27x00_battery_read_energy(di);
+ cache.time_to_empty = bq27x00_battery_read_time(di, BQ27x00_REG_TTE);
+ cache.time_to_empty_avg = bq27x00_battery_read_time(di, BQ27x00_REG_TTECP);
+ cache.time_to_full = bq27x00_battery_read_time(di, BQ27x00_REG_TTF);
+ cache.charge_full = bq27x00_battery_read_lmd(di);
+ }
+ cache.temperature = bq27x00_battery_read_temperature(di);
cache.cycle_count = bq27x00_battery_read_cyct(di);
- if (!is_bq27500)
- cache.current_now = bq27x00_read(di, BQ27x00_REG_AI, false);
-
/* We only have to read charge design full once */
if (di->charge_design_full <= 0)
di->charge_design_full = bq27x00_battery_read_ilmd(di);
}
- /* Ignore current_now which is a snapshot of the current battery state
- * and is likely to be different even between two consecutive reads */
- if (memcmp(&di->cache, &cache, sizeof(cache) - sizeof(int)) != 0) {
+ if (memcmp(&di->cache, &cache, sizeof(cache)) != 0) {
di->cache = cache;
power_supply_changed(&di->bat);
}
}
}
-
-/*
- * Return the battery temperature in tenths of degree Celsius
- * Or < 0 if something fails.
- */
-static int bq27x00_battery_temperature(struct bq27x00_device_info *di,
- union power_supply_propval *val)
-{
- if (di->cache.temperature < 0)
- return di->cache.temperature;
-
- if (di->chip == BQ27500)
- val->intval = di->cache.temperature - 2731;
- else
- val->intval = ((di->cache.temperature * 5) - 5463) / 2;
-
- return 0;
-}
-
/*
* Return the battery average current in µA
* Note that current can be negative signed as well
union power_supply_propval *val)
{
int curr;
+ int flags;
- if (di->chip == BQ27500)
- curr = bq27x00_read(di, BQ27x00_REG_AI, false);
- else
- curr = di->cache.current_now;
-
- if (curr < 0)
+ curr = bq27x00_read(di, BQ27x00_REG_AI, false);
+ if (curr < 0) {
+ dev_err(di->dev, "error reading current\n");
return curr;
+ }
if (di->chip == BQ27500) {
/* bq27500 returns signed value */
val->intval = (int)((s16)curr) * 1000;
} else {
- if (di->cache.flags & BQ27000_FLAG_CHGS) {
+ flags = bq27x00_read(di, BQ27x00_REG_FLAGS, false);
+ if (flags & BQ27000_FLAG_CHGS) {
dev_dbg(di->dev, "negative current!\n");
curr = -curr;
}
if (di->chip == BQ27500) {
if (di->cache.flags & BQ27500_FLAG_FC)
status = POWER_SUPPLY_STATUS_FULL;
- else if (di->cache.flags & BQ27500_FLAG_DSC)
+ else if (di->cache.flags & BQ27500_FLAG_DSG)
status = POWER_SUPPLY_STATUS_DISCHARGING;
- else
+ else if (di->cache.flags & BQ27500_FLAG_CHG)
status = POWER_SUPPLY_STATUS_CHARGING;
+ else if (power_supply_am_i_supplied(&di->bat))
+ status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ else
+ status = POWER_SUPPLY_STATUS_UNKNOWN;
} else {
if (di->cache.flags & BQ27000_FLAG_FC)
status = POWER_SUPPLY_STATUS_FULL;
return 0;
}
-/*
- * Return the battery Voltage in milivolts
- * Or < 0 if something fails.
- */
-static int bq27x00_battery_voltage(struct bq27x00_device_info *di,
+static int bq27x00_battery_capacity_level(struct bq27x00_device_info *di,
union power_supply_propval *val)
{
- int volt;
+ int level;
- volt = bq27x00_read(di, BQ27x00_REG_VOLT, false);
- if (volt < 0)
- return volt;
+ if (di->chip == BQ27500) {
+ if (di->cache.flags & BQ27500_FLAG_FC)
+ level = POWER_SUPPLY_CAPACITY_LEVEL_FULL;
+ else if (di->cache.flags & BQ27500_FLAG_SOC1)
+ level = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
+ else if (di->cache.flags & BQ27500_FLAG_SOCF)
+ level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
+ else
+ level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
+ } else {
+ if (di->cache.flags & BQ27000_FLAG_FC)
+ level = POWER_SUPPLY_CAPACITY_LEVEL_FULL;
+ else if (di->cache.flags & BQ27000_FLAG_EDV1)
+ level = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
+ else if (di->cache.flags & BQ27000_FLAG_EDVF)
+ level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
+ else
+ level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
+ }
- val->intval = volt * 1000;
+ val->intval = level;
return 0;
}
/*
- * Return the battery Available energy in µWh
+ * Return the battery Voltage in milivolts
* Or < 0 if something fails.
*/
-static int bq27x00_battery_energy(struct bq27x00_device_info *di,
+static int bq27x00_battery_voltage(struct bq27x00_device_info *di,
union power_supply_propval *val)
{
- int ae;
+ int volt;
- ae = bq27x00_read(di, BQ27x00_REG_AE, false);
- if (ae < 0) {
- dev_err(di->dev, "error reading available energy\n");
- return ae;
+ volt = bq27x00_read(di, BQ27x00_REG_VOLT, false);
+ if (volt < 0) {
+ dev_err(di->dev, "error reading voltage\n");
+ return volt;
}
- if (di->chip == BQ27500)
- ae *= 1000;
- else
- ae = ae * 29200 / BQ27000_RS;
-
- val->intval = ae;
+ val->intval = volt * 1000;
return 0;
}
-
static int bq27x00_simple_value(int value,
union power_supply_propval *val)
{
case POWER_SUPPLY_PROP_CAPACITY:
ret = bq27x00_simple_value(di->cache.capacity, val);
break;
+ case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
+ ret = bq27x00_battery_capacity_level(di, val);
+ break;
case POWER_SUPPLY_PROP_TEMP:
- ret = bq27x00_battery_temperature(di, val);
+ ret = bq27x00_simple_value(di->cache.temperature, val);
break;
case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW:
ret = bq27x00_simple_value(di->cache.time_to_empty, val);
ret = bq27x00_simple_value(di->cache.cycle_count, val);
break;
case POWER_SUPPLY_PROP_ENERGY_NOW:
- ret = bq27x00_battery_energy(di, val);
+ ret = bq27x00_simple_value(di->cache.energy, val);
break;
default:
return -EINVAL;
static void bq27x00_powersupply_unregister(struct bq27x00_device_info *di)
{
+ /*
+ * power_supply_unregister call bq27x00_battery_get_property which
+ * call bq27x00_battery_poll.
+ * Make sure that bq27x00_battery_poll will not call
+ * schedule_delayed_work again after unregister (which cause OOPS).
+ */
+ poll_interval = 0;
+
cancel_delayed_work_sync(&di->work);
power_supply_unregister(&di->bat);
--- /dev/null
+/*
+ * Copyright (C) 2011 Samsung Electronics Co., Ltd.
+ * MyungJoo Ham <myungjoo.ham@samsung.com>
+ *
+ * This driver enables to monitor battery health and control charger
+ * during suspend-to-mem.
+ * Charger manager depends on other devices. register this later than
+ * the depending devices.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+**/
+
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/rtc.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+#include <linux/platform_device.h>
+#include <linux/power/charger-manager.h>
+#include <linux/regulator/consumer.h>
+
+/*
+ * Regard CM_JIFFIES_SMALL jiffies is small enough to ignore for
+ * delayed works so that we can run delayed works with CM_JIFFIES_SMALL
+ * without any delays.
+ */
+#define CM_JIFFIES_SMALL (2)
+
+/* If y is valid (> 0) and smaller than x, do x = y */
+#define CM_MIN_VALID(x, y) x = (((y > 0) && ((x) > (y))) ? (y) : (x))
+
+/*
+ * Regard CM_RTC_SMALL (sec) is small enough to ignore error in invoking
+ * rtc alarm. It should be 2 or larger
+ */
+#define CM_RTC_SMALL (2)
+
+#define UEVENT_BUF_SIZE 32
+
+static LIST_HEAD(cm_list);
+static DEFINE_MUTEX(cm_list_mtx);
+
+/* About in-suspend (suspend-again) monitoring */
+static struct rtc_device *rtc_dev;
+/*
+ * Backup RTC alarm
+ * Save the wakeup alarm before entering suspend-to-RAM
+ */
+static struct rtc_wkalrm rtc_wkalarm_save;
+/* Backup RTC alarm time in terms of seconds since 01-01-1970 00:00:00 */
+static unsigned long rtc_wkalarm_save_time;
+static bool cm_suspended;
+static bool cm_rtc_set;
+static unsigned long cm_suspend_duration_ms;
+
+/* Global charger-manager description */
+static struct charger_global_desc *g_desc; /* init with setup_charger_manager */
+
+/**
+ * is_batt_present - See if the battery presents in place.
+ * @cm: the Charger Manager representing the battery.
+ */
+static bool is_batt_present(struct charger_manager *cm)
+{
+ union power_supply_propval val;
+ bool present = false;
+ int i, ret;
+
+ switch (cm->desc->battery_present) {
+ case CM_FUEL_GAUGE:
+ ret = cm->fuel_gauge->get_property(cm->fuel_gauge,
+ 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);
+ if (ret == 0 && val.intval) {
+ present = true;
+ break;
+ }
+ }
+ break;
+ }
+
+ return present;
+}
+
+/**
+ * is_ext_pwr_online - See if an external power source is attached to charge
+ * @cm: the Charger Manager representing the battery.
+ *
+ * Returns true if at least one of the chargers of the battery has an external
+ * power source attached to charge the battery regardless of whether it is
+ * actually charging or not.
+ */
+static bool is_ext_pwr_online(struct charger_manager *cm)
+{
+ union power_supply_propval val;
+ 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);
+ if (ret == 0 && val.intval) {
+ online = true;
+ break;
+ }
+ }
+
+ return online;
+}
+
+/**
+ * get_batt_uV - Get the voltage level of the battery
+ * @cm: the Charger Manager representing the battery.
+ * @uV: the voltage level returned.
+ *
+ * Returns 0 if there is no error.
+ * Returns a negative value on error.
+ */
+static int get_batt_uV(struct charger_manager *cm, int *uV)
+{
+ union power_supply_propval val;
+ int ret;
+
+ if (cm->fuel_gauge)
+ ret = cm->fuel_gauge->get_property(cm->fuel_gauge,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW, &val);
+ else
+ return -ENODEV;
+
+ if (ret)
+ return ret;
+
+ *uV = val.intval;
+ return 0;
+}
+
+/**
+ * is_charging - Returns true if the battery is being charged.
+ * @cm: the Charger Manager representing the battery.
+ */
+static bool is_charging(struct charger_manager *cm)
+{
+ int i, ret;
+ bool charging = false;
+ union power_supply_propval val;
+
+ /* If there is no battery, it cannot be charged */
+ if (!is_batt_present(cm))
+ return false;
+
+ /* If at least one of the charger is charging, return yes */
+ for (i = 0; cm->charger_stat[i]; i++) {
+ /* 1. The charger sholuld not be DISABLED */
+ if (cm->emergency_stop)
+ continue;
+ if (!cm->charger_enabled)
+ 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);
+ if (ret) {
+ dev_warn(cm->dev, "Cannot read ONLINE value from %s.\n",
+ cm->desc->psy_charger_stat[i]);
+ continue;
+ }
+ if (val.intval == 0)
+ continue;
+
+ /*
+ * 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);
+ if (ret) {
+ dev_warn(cm->dev, "Cannot read STATUS value from %s.\n",
+ cm->desc->psy_charger_stat[i]);
+ continue;
+ }
+ if (val.intval == POWER_SUPPLY_STATUS_FULL ||
+ val.intval == POWER_SUPPLY_STATUS_DISCHARGING ||
+ val.intval == POWER_SUPPLY_STATUS_NOT_CHARGING)
+ continue;
+
+ /* Then, this is charging. */
+ charging = true;
+ break;
+ }
+
+ return charging;
+}
+
+/**
+ * is_polling_required - Return true if need to continue polling for this CM.
+ * @cm: the Charger Manager representing the battery.
+ */
+static bool is_polling_required(struct charger_manager *cm)
+{
+ switch (cm->desc->polling_mode) {
+ case CM_POLL_DISABLE:
+ return false;
+ case CM_POLL_ALWAYS:
+ return true;
+ case CM_POLL_EXTERNAL_POWER_ONLY:
+ return is_ext_pwr_online(cm);
+ case CM_POLL_CHARGING_ONLY:
+ return is_charging(cm);
+ default:
+ dev_warn(cm->dev, "Incorrect polling_mode (%d)\n",
+ cm->desc->polling_mode);
+ }
+
+ return false;
+}
+
+/**
+ * try_charger_enable - Enable/Disable chargers altogether
+ * @cm: the Charger Manager representing the battery.
+ * @enable: true: enable / false: disable
+ *
+ * Note that Charger Manager keeps the charger enabled regardless whether
+ * the charger is charging or not (because battery is full or no external
+ * power source exists) except when CM needs to disable chargers forcibly
+ * bacause of emergency causes; when the battery is overheated or too cold.
+ */
+static int try_charger_enable(struct charger_manager *cm, bool enable)
+{
+ int err = 0, i;
+ struct charger_desc *desc = cm->desc;
+
+ /* Ignore if it's redundent command */
+ if (enable && cm->charger_enabled)
+ return 0;
+ if (!enable && !cm->charger_enabled)
+ return 0;
+
+ if (enable) {
+ if (cm->emergency_stop)
+ return -EAGAIN;
+ err = regulator_bulk_enable(desc->num_charger_regulators,
+ desc->charger_regulators);
+ } else {
+ /*
+ * Abnormal battery state - Stop charging forcibly,
+ * even if charger was enabled at the other places
+ */
+ err = regulator_bulk_disable(desc->num_charger_regulators,
+ desc->charger_regulators);
+
+ for (i = 0; i < desc->num_charger_regulators; i++) {
+ if (regulator_is_enabled(
+ desc->charger_regulators[i].consumer)) {
+ regulator_force_disable(
+ desc->charger_regulators[i].consumer);
+ dev_warn(cm->dev,
+ "Disable regulator(%s) forcibly.\n",
+ desc->charger_regulators[i].supply);
+ }
+ }
+ }
+
+ if (!err)
+ cm->charger_enabled = enable;
+
+ return err;
+}
+
+/**
+ * uevent_notify - Let users know something has changed.
+ * @cm: the Charger Manager representing the battery.
+ * @event: the event string.
+ *
+ * If @event is null, it implies that uevent_notify is called
+ * by resume function. When called in the resume function, cm_suspended
+ * should be already reset to false in order to let uevent_notify
+ * notify the recent event during the suspend to users. While
+ * suspended, uevent_notify does not notify users, but tracks
+ * events so that uevent_notify can notify users later after resumed.
+ */
+static void uevent_notify(struct charger_manager *cm, const char *event)
+{
+ static char env_str[UEVENT_BUF_SIZE + 1] = "";
+ static char env_str_save[UEVENT_BUF_SIZE + 1] = "";
+
+ if (cm_suspended) {
+ /* Nothing in suspended-event buffer */
+ if (env_str_save[0] == 0) {
+ if (!strncmp(env_str, event, UEVENT_BUF_SIZE))
+ return; /* status not changed */
+ strncpy(env_str_save, event, UEVENT_BUF_SIZE);
+ return;
+ }
+
+ if (!strncmp(env_str_save, event, UEVENT_BUF_SIZE))
+ return; /* Duplicated. */
+ else
+ strncpy(env_str_save, event, UEVENT_BUF_SIZE);
+
+ return;
+ }
+
+ if (event == NULL) {
+ /* No messages pending */
+ if (!env_str_save[0])
+ return;
+
+ strncpy(env_str, env_str_save, UEVENT_BUF_SIZE);
+ kobject_uevent(&cm->dev->kobj, KOBJ_CHANGE);
+ env_str_save[0] = 0;
+
+ return;
+ }
+
+ /* status not changed */
+ if (!strncmp(env_str, event, UEVENT_BUF_SIZE))
+ return;
+
+ /* save the status and notify the update */
+ strncpy(env_str, event, UEVENT_BUF_SIZE);
+ kobject_uevent(&cm->dev->kobj, KOBJ_CHANGE);
+
+ dev_info(cm->dev, event);
+}
+
+/**
+ * _cm_monitor - Monitor the temperature and return true for exceptions.
+ * @cm: the Charger Manager representing the battery.
+ *
+ * Returns true if there is an event to notify for the battery.
+ * (True if the status of "emergency_stop" changes)
+ */
+static bool _cm_monitor(struct charger_manager *cm)
+{
+ struct charger_desc *desc = cm->desc;
+ int temp = desc->temperature_out_of_range(&cm->last_temp_mC);
+
+ dev_dbg(cm->dev, "monitoring (%2.2d.%3.3dC)\n",
+ cm->last_temp_mC / 1000, cm->last_temp_mC % 1000);
+
+ /* It has been stopped or charging already */
+ if (!!temp == !!cm->emergency_stop)
+ return false;
+
+ if (temp) {
+ cm->emergency_stop = temp;
+ if (!try_charger_enable(cm, false)) {
+ if (temp > 0)
+ uevent_notify(cm, "OVERHEAT");
+ else
+ uevent_notify(cm, "COLD");
+ }
+ } else {
+ cm->emergency_stop = 0;
+ if (!try_charger_enable(cm, true))
+ uevent_notify(cm, "CHARGING");
+ }
+
+ return true;
+}
+
+/**
+ * cm_monitor - Monitor every battery.
+ *
+ * Returns true if there is an event to notify from any of the batteries.
+ * (True if the status of "emergency_stop" changes)
+ */
+static bool cm_monitor(void)
+{
+ bool stop = false;
+ struct charger_manager *cm;
+
+ mutex_lock(&cm_list_mtx);
+
+ list_for_each_entry(cm, &cm_list, entry)
+ stop = stop || _cm_monitor(cm);
+
+ mutex_unlock(&cm_list_mtx);
+
+ return stop;
+}
+
+static int charger_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct charger_manager *cm = container_of(psy,
+ struct charger_manager, charger_psy);
+ struct charger_desc *desc = cm->desc;
+ int i, ret = 0, uV;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ if (is_charging(cm))
+ val->intval = POWER_SUPPLY_STATUS_CHARGING;
+ else if (is_ext_pwr_online(cm))
+ val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ else
+ val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ if (cm->emergency_stop > 0)
+ val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
+ else if (cm->emergency_stop < 0)
+ val->intval = POWER_SUPPLY_HEALTH_COLD;
+ else
+ val->intval = POWER_SUPPLY_HEALTH_GOOD;
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ if (is_batt_present(cm))
+ val->intval = 1;
+ else
+ val->intval = 0;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ ret = get_batt_uV(cm, &i);
+ val->intval = i;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ ret = cm->fuel_gauge->get_property(cm->fuel_gauge,
+ POWER_SUPPLY_PROP_CURRENT_NOW, val);
+ break;
+ case POWER_SUPPLY_PROP_TEMP:
+ /* in thenth of centigrade */
+ if (cm->last_temp_mC == INT_MIN)
+ desc->temperature_out_of_range(&cm->last_temp_mC);
+ val->intval = cm->last_temp_mC / 100;
+ if (!desc->measure_battery_temp)
+ ret = -ENODEV;
+ break;
+ case POWER_SUPPLY_PROP_TEMP_AMBIENT:
+ /* in thenth of centigrade */
+ if (cm->last_temp_mC == INT_MIN)
+ desc->temperature_out_of_range(&cm->last_temp_mC);
+ val->intval = cm->last_temp_mC / 100;
+ if (desc->measure_battery_temp)
+ ret = -ENODEV;
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ if (!cm->fuel_gauge) {
+ ret = -ENODEV;
+ break;
+ }
+
+ if (!is_batt_present(cm)) {
+ /* There is no battery. Assume 100% */
+ val->intval = 100;
+ break;
+ }
+
+ ret = cm->fuel_gauge->get_property(cm->fuel_gauge,
+ POWER_SUPPLY_PROP_CAPACITY, val);
+ if (ret)
+ break;
+
+ if (val->intval > 100) {
+ val->intval = 100;
+ break;
+ }
+ if (val->intval < 0)
+ val->intval = 0;
+
+ /* Do not adjust SOC when charging: voltage is overrated */
+ if (is_charging(cm))
+ break;
+
+ /*
+ * If the capacity value is inconsistent, calibrate it base on
+ * the battery voltage values and the thresholds given as desc
+ */
+ ret = get_batt_uV(cm, &uV);
+ if (ret) {
+ /* Voltage information not available. No calibration */
+ ret = 0;
+ break;
+ }
+
+ if (desc->fullbatt_uV > 0 && uV >= desc->fullbatt_uV &&
+ !is_charging(cm)) {
+ val->intval = 100;
+ break;
+ }
+
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ if (is_ext_pwr_online(cm))
+ val->intval = 1;
+ else
+ val->intval = 0;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_FULL:
+ if (cm->fuel_gauge) {
+ if (cm->fuel_gauge->get_property(cm->fuel_gauge,
+ POWER_SUPPLY_PROP_CHARGE_FULL, val) == 0)
+ break;
+ }
+
+ if (is_ext_pwr_online(cm)) {
+ /* Not full if it's charging. */
+ if (is_charging(cm)) {
+ val->intval = 0;
+ break;
+ }
+ /*
+ * Full if it's powered but not charging andi
+ * not forced stop by emergency
+ */
+ if (!cm->emergency_stop) {
+ val->intval = 1;
+ break;
+ }
+ }
+
+ /* Full if it's over the fullbatt voltage */
+ ret = get_batt_uV(cm, &uV);
+ if (!ret && desc->fullbatt_uV > 0 && uV >= desc->fullbatt_uV &&
+ !is_charging(cm)) {
+ val->intval = 1;
+ break;
+ }
+
+ /* Full if the cap is 100 */
+ if (cm->fuel_gauge) {
+ ret = cm->fuel_gauge->get_property(cm->fuel_gauge,
+ POWER_SUPPLY_PROP_CAPACITY, val);
+ if (!ret && val->intval >= 100 && !is_charging(cm)) {
+ val->intval = 1;
+ break;
+ }
+ }
+
+ val->intval = 0;
+ ret = 0;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_NOW:
+ if (is_charging(cm)) {
+ ret = cm->fuel_gauge->get_property(cm->fuel_gauge,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
+ val);
+ if (ret) {
+ val->intval = 1;
+ ret = 0;
+ } else {
+ /* If CHARGE_NOW is supplied, use it */
+ val->intval = (val->intval > 0) ?
+ val->intval : 1;
+ }
+ } else {
+ val->intval = 0;
+ }
+ break;
+ default:
+ return -EINVAL;
+ }
+ return ret;
+}
+
+#define NUM_CHARGER_PSY_OPTIONAL (4)
+static enum power_supply_property default_charger_props[] = {
+ /* Guaranteed to provide */
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_CHARGE_FULL,
+ /*
+ * Optional properties are:
+ * POWER_SUPPLY_PROP_CHARGE_NOW,
+ * POWER_SUPPLY_PROP_CURRENT_NOW,
+ * POWER_SUPPLY_PROP_TEMP, and
+ * POWER_SUPPLY_PROP_TEMP_AMBIENT,
+ */
+};
+
+static struct power_supply psy_default = {
+ .name = "battery",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = default_charger_props,
+ .num_properties = ARRAY_SIZE(default_charger_props),
+ .get_property = charger_get_property,
+};
+
+/**
+ * cm_setup_timer - For in-suspend monitoring setup wakeup alarm
+ * for suspend_again.
+ *
+ * Returns true if the alarm is set for Charger Manager to use.
+ * Returns false if
+ * cm_setup_timer fails to set an alarm,
+ * cm_setup_timer does not need to set an alarm for Charger Manager,
+ * or an alarm previously configured is to be used.
+ */
+static bool cm_setup_timer(void)
+{
+ struct charger_manager *cm;
+ unsigned int wakeup_ms = UINT_MAX;
+ bool ret = false;
+
+ mutex_lock(&cm_list_mtx);
+
+ list_for_each_entry(cm, &cm_list, entry) {
+ /* Skip if polling is not required for this CM */
+ if (!is_polling_required(cm) && !cm->emergency_stop)
+ continue;
+ if (cm->desc->polling_interval_ms == 0)
+ continue;
+ CM_MIN_VALID(wakeup_ms, cm->desc->polling_interval_ms);
+ }
+
+ mutex_unlock(&cm_list_mtx);
+
+ if (wakeup_ms < UINT_MAX && wakeup_ms > 0) {
+ pr_info("Charger Manager wakeup timer: %u ms.\n", wakeup_ms);
+ if (rtc_dev) {
+ struct rtc_wkalrm tmp;
+ unsigned long time, now;
+ unsigned long add = DIV_ROUND_UP(wakeup_ms, 1000);
+
+ /*
+ * Set alarm with the polling interval (wakeup_ms)
+ * except when rtc_wkalarm_save comes first.
+ * However, the alarm time should be NOW +
+ * CM_RTC_SMALL or later.
+ */
+ tmp.enabled = 1;
+ rtc_read_time(rtc_dev, &tmp.time);
+ rtc_tm_to_time(&tmp.time, &now);
+ if (add < CM_RTC_SMALL)
+ add = CM_RTC_SMALL;
+ time = now + add;
+
+ ret = true;
+
+ if (rtc_wkalarm_save.enabled &&
+ rtc_wkalarm_save_time &&
+ rtc_wkalarm_save_time < time) {
+ if (rtc_wkalarm_save_time < now + CM_RTC_SMALL)
+ time = now + CM_RTC_SMALL;
+ else
+ time = rtc_wkalarm_save_time;
+
+ /* The timer is not appointed by CM */
+ ret = false;
+ }
+
+ pr_info("Waking up after %lu secs.\n",
+ time - now);
+
+ rtc_time_to_tm(time, &tmp.time);
+ rtc_set_alarm(rtc_dev, &tmp);
+ cm_suspend_duration_ms += wakeup_ms;
+ return ret;
+ }
+ }
+
+ if (rtc_dev)
+ rtc_set_alarm(rtc_dev, &rtc_wkalarm_save);
+ return false;
+}
+
+/**
+ * cm_suspend_again - Determine whether suspend again or not
+ *
+ * Returns true if the system should be suspended again
+ * Returns false if the system should be woken up
+ */
+bool cm_suspend_again(void)
+{
+ struct charger_manager *cm;
+ bool ret = false;
+
+ if (!g_desc || !g_desc->rtc_only_wakeup || !g_desc->rtc_only_wakeup() ||
+ !cm_rtc_set)
+ return false;
+
+ if (cm_monitor())
+ goto out;
+
+ ret = true;
+ mutex_lock(&cm_list_mtx);
+ list_for_each_entry(cm, &cm_list, entry) {
+ if (cm->status_save_ext_pwr_inserted != is_ext_pwr_online(cm) ||
+ cm->status_save_batt != is_batt_present(cm))
+ ret = false;
+ }
+ mutex_unlock(&cm_list_mtx);
+
+ cm_rtc_set = cm_setup_timer();
+out:
+ /* It's about the time when the non-CM appointed timer goes off */
+ if (rtc_wkalarm_save.enabled) {
+ unsigned long now;
+ struct rtc_time tmp;
+
+ rtc_read_time(rtc_dev, &tmp);
+ rtc_tm_to_time(&tmp, &now);
+
+ if (rtc_wkalarm_save_time &&
+ now + CM_RTC_SMALL >= rtc_wkalarm_save_time)
+ return false;
+ }
+ return ret;
+}
+EXPORT_SYMBOL_GPL(cm_suspend_again);
+
+/**
+ * setup_charger_manager - initialize charger_global_desc data
+ * @gd: pointer to instance of charger_global_desc
+ */
+int setup_charger_manager(struct charger_global_desc *gd)
+{
+ if (!gd)
+ return -EINVAL;
+
+ if (rtc_dev)
+ rtc_class_close(rtc_dev);
+ rtc_dev = NULL;
+ g_desc = NULL;
+
+ if (!gd->rtc_only_wakeup) {
+ pr_err("The callback rtc_only_wakeup is not given.\n");
+ return -EINVAL;
+ }
+
+ if (gd->rtc_name) {
+ rtc_dev = rtc_class_open(gd->rtc_name);
+ if (IS_ERR_OR_NULL(rtc_dev)) {
+ rtc_dev = NULL;
+ /* Retry at probe. RTC may be not registered yet */
+ }
+ } else {
+ pr_warn("No wakeup timer is given for charger manager."
+ "In-suspend monitoring won't work.\n");
+ }
+
+ g_desc = gd;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(setup_charger_manager);
+
+static int charger_manager_probe(struct platform_device *pdev)
+{
+ struct charger_desc *desc = dev_get_platdata(&pdev->dev);
+ struct charger_manager *cm;
+ int ret = 0, i = 0;
+ union power_supply_propval val;
+
+ if (g_desc && !rtc_dev && g_desc->rtc_name) {
+ rtc_dev = rtc_class_open(g_desc->rtc_name);
+ if (IS_ERR_OR_NULL(rtc_dev)) {
+ rtc_dev = NULL;
+ dev_err(&pdev->dev, "Cannot get RTC %s.\n",
+ g_desc->rtc_name);
+ ret = -ENODEV;
+ goto err_alloc;
+ }
+ }
+
+ if (!desc) {
+ dev_err(&pdev->dev, "No platform data (desc) found.\n");
+ ret = -ENODEV;
+ goto err_alloc;
+ }
+
+ cm = kzalloc(sizeof(struct charger_manager), GFP_KERNEL);
+ if (!cm) {
+ dev_err(&pdev->dev, "Cannot allocate memory.\n");
+ ret = -ENOMEM;
+ goto err_alloc;
+ }
+
+ /* Basic Values. Unspecified are Null or 0 */
+ cm->dev = &pdev->dev;
+ cm->desc = kzalloc(sizeof(struct charger_desc), GFP_KERNEL);
+ if (!cm->desc) {
+ dev_err(&pdev->dev, "Cannot allocate memory.\n");
+ ret = -ENOMEM;
+ goto err_alloc_desc;
+ }
+ memcpy(cm->desc, desc, sizeof(struct charger_desc));
+ cm->last_temp_mC = INT_MIN; /* denotes "unmeasured, yet" */
+
+ if (!desc->charger_regulators || desc->num_charger_regulators < 1) {
+ ret = -EINVAL;
+ dev_err(&pdev->dev, "charger_regulators undefined.\n");
+ goto err_no_charger;
+ }
+
+ if (!desc->psy_charger_stat || !desc->psy_charger_stat[0]) {
+ dev_err(&pdev->dev, "No power supply defined.\n");
+ ret = -EINVAL;
+ goto err_no_charger_stat;
+ }
+
+ /* Counting index only */
+ while (desc->psy_charger_stat[i])
+ i++;
+
+ cm->charger_stat = kzalloc(sizeof(struct power_supply *) * (i + 1),
+ GFP_KERNEL);
+ if (!cm->charger_stat) {
+ ret = -ENOMEM;
+ goto err_no_charger_stat;
+ }
+
+ 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]) {
+ dev_err(&pdev->dev, "Cannot find power supply "
+ "\"%s\"\n",
+ desc->psy_charger_stat[i]);
+ ret = -ENODEV;
+ goto err_chg_stat;
+ }
+ }
+
+ cm->fuel_gauge = power_supply_get_by_name(desc->psy_fuel_gauge);
+ if (!cm->fuel_gauge) {
+ dev_err(&pdev->dev, "Cannot find power supply \"%s\"\n",
+ desc->psy_fuel_gauge);
+ ret = -ENODEV;
+ goto err_chg_stat;
+ }
+
+ if (desc->polling_interval_ms == 0 ||
+ msecs_to_jiffies(desc->polling_interval_ms) <= CM_JIFFIES_SMALL) {
+ dev_err(&pdev->dev, "polling_interval_ms is too small\n");
+ ret = -EINVAL;
+ goto err_chg_stat;
+ }
+
+ if (!desc->temperature_out_of_range) {
+ dev_err(&pdev->dev, "there is no temperature_out_of_range\n");
+ ret = -EINVAL;
+ goto err_chg_stat;
+ }
+
+ platform_set_drvdata(pdev, cm);
+
+ memcpy(&cm->charger_psy, &psy_default,
+ sizeof(psy_default));
+ if (!desc->psy_name) {
+ strncpy(cm->psy_name_buf, psy_default.name,
+ PSY_NAME_MAX);
+ } else {
+ strncpy(cm->psy_name_buf, desc->psy_name, PSY_NAME_MAX);
+ }
+ cm->charger_psy.name = cm->psy_name_buf;
+
+ /* Allocate for psy properties because they may vary */
+ cm->charger_psy.properties = kzalloc(sizeof(enum power_supply_property)
+ * (ARRAY_SIZE(default_charger_props) +
+ NUM_CHARGER_PSY_OPTIONAL),
+ GFP_KERNEL);
+ if (!cm->charger_psy.properties) {
+ dev_err(&pdev->dev, "Cannot allocate for psy properties.\n");
+ ret = -ENOMEM;
+ goto err_chg_stat;
+ }
+ memcpy(cm->charger_psy.properties, default_charger_props,
+ sizeof(enum power_supply_property) *
+ ARRAY_SIZE(default_charger_props));
+ 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,
+ 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,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ &val)) {
+ cm->charger_psy.properties[cm->charger_psy.num_properties] =
+ POWER_SUPPLY_PROP_CURRENT_NOW;
+ cm->charger_psy.num_properties++;
+ }
+ if (!desc->measure_battery_temp) {
+ cm->charger_psy.properties[cm->charger_psy.num_properties] =
+ POWER_SUPPLY_PROP_TEMP_AMBIENT;
+ cm->charger_psy.num_properties++;
+ }
+ if (desc->measure_battery_temp) {
+ cm->charger_psy.properties[cm->charger_psy.num_properties] =
+ POWER_SUPPLY_PROP_TEMP;
+ cm->charger_psy.num_properties++;
+ }
+
+ ret = power_supply_register(NULL, &cm->charger_psy);
+ if (ret) {
+ dev_err(&pdev->dev, "Cannot register charger-manager with"
+ " name \"%s\".\n", cm->charger_psy.name);
+ goto err_register;
+ }
+
+ ret = regulator_bulk_get(&pdev->dev, desc->num_charger_regulators,
+ desc->charger_regulators);
+ if (ret) {
+ dev_err(&pdev->dev, "Cannot get charger regulators.\n");
+ goto err_bulk_get;
+ }
+
+ ret = try_charger_enable(cm, true);
+ if (ret) {
+ dev_err(&pdev->dev, "Cannot enable charger regulators\n");
+ goto err_chg_enable;
+ }
+
+ /* Add to the list */
+ mutex_lock(&cm_list_mtx);
+ list_add(&cm->entry, &cm_list);
+ mutex_unlock(&cm_list_mtx);
+
+ return 0;
+
+err_chg_enable:
+ if (desc->charger_regulators)
+ regulator_bulk_free(desc->num_charger_regulators,
+ desc->charger_regulators);
+err_bulk_get:
+ power_supply_unregister(&cm->charger_psy);
+err_register:
+ kfree(cm->charger_psy.properties);
+err_chg_stat:
+ kfree(cm->charger_stat);
+err_no_charger_stat:
+err_no_charger:
+ kfree(cm->desc);
+err_alloc_desc:
+ kfree(cm);
+err_alloc:
+ return ret;
+}
+
+static int __devexit charger_manager_remove(struct platform_device *pdev)
+{
+ struct charger_manager *cm = platform_get_drvdata(pdev);
+ struct charger_desc *desc = cm->desc;
+
+ /* Remove from the list */
+ mutex_lock(&cm_list_mtx);
+ list_del(&cm->entry);
+ mutex_unlock(&cm_list_mtx);
+
+ if (desc->charger_regulators)
+ regulator_bulk_free(desc->num_charger_regulators,
+ desc->charger_regulators);
+
+ power_supply_unregister(&cm->charger_psy);
+ kfree(cm->charger_psy.properties);
+ kfree(cm->charger_stat);
+ kfree(cm->desc);
+ kfree(cm);
+
+ return 0;
+}
+
+const struct platform_device_id charger_manager_id[] = {
+ { "charger-manager", 0 },
+ { },
+};
+
+static int cm_suspend_prepare(struct device *dev)
+{
+ struct platform_device *pdev = container_of(dev, struct platform_device,
+ dev);
+ struct charger_manager *cm = platform_get_drvdata(pdev);
+
+ if (!cm_suspended) {
+ if (rtc_dev) {
+ struct rtc_time tmp;
+ unsigned long now;
+
+ rtc_read_alarm(rtc_dev, &rtc_wkalarm_save);
+ rtc_read_time(rtc_dev, &tmp);
+
+ if (rtc_wkalarm_save.enabled) {
+ rtc_tm_to_time(&rtc_wkalarm_save.time,
+ &rtc_wkalarm_save_time);
+ rtc_tm_to_time(&tmp, &now);
+ if (now > rtc_wkalarm_save_time)
+ rtc_wkalarm_save_time = 0;
+ } else {
+ rtc_wkalarm_save_time = 0;
+ }
+ }
+ cm_suspended = true;
+ }
+
+ cm->status_save_ext_pwr_inserted = is_ext_pwr_online(cm);
+ cm->status_save_batt = is_batt_present(cm);
+
+ if (!cm_rtc_set) {
+ cm_suspend_duration_ms = 0;
+ cm_rtc_set = cm_setup_timer();
+ }
+
+ return 0;
+}
+
+static void cm_suspend_complete(struct device *dev)
+{
+ struct platform_device *pdev = container_of(dev, struct platform_device,
+ dev);
+ struct charger_manager *cm = platform_get_drvdata(pdev);
+
+ if (cm_suspended) {
+ if (rtc_dev) {
+ struct rtc_wkalrm tmp;
+
+ rtc_read_alarm(rtc_dev, &tmp);
+ rtc_wkalarm_save.pending = tmp.pending;
+ rtc_set_alarm(rtc_dev, &rtc_wkalarm_save);
+ }
+ cm_suspended = false;
+ cm_rtc_set = false;
+ }
+
+ uevent_notify(cm, NULL);
+}
+
+static const struct dev_pm_ops charger_manager_pm = {
+ .prepare = cm_suspend_prepare,
+ .complete = cm_suspend_complete,
+};
+
+static struct platform_driver charger_manager_driver = {
+ .driver = {
+ .name = "charger-manager",
+ .owner = THIS_MODULE,
+ .pm = &charger_manager_pm,
+ },
+ .probe = charger_manager_probe,
+ .remove = __devexit_p(charger_manager_remove),
+ .id_table = charger_manager_id,
+};
+
+static int __init charger_manager_init(void)
+{
+ return platform_driver_register(&charger_manager_driver);
+}
+late_initcall(charger_manager_init);
+
+static void __exit charger_manager_cleanup(void)
+{
+ platform_driver_unregister(&charger_manager_driver);
+}
+module_exit(charger_manager_cleanup);
+
+MODULE_AUTHOR("MyungJoo Ham <myungjoo.ham@samsung.com>");
+MODULE_DESCRIPTION("Charger Manager");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("charger-manager");
.adc_temp_divider = -1,
};
-static struct {
- int gpio;
- char *name;
- bool output;
- int value;
-} gpios[] = {
- { COLLIE_GPIO_CO, "main battery full", 0, 0 },
- { COLLIE_GPIO_MAIN_BAT_LOW, "main battery low", 0, 0 },
- { COLLIE_GPIO_CHARGE_ON, "main charge on", 1, 0 },
- { COLLIE_GPIO_MBAT_ON, "main battery", 1, 0 },
- { COLLIE_GPIO_TMP_ON, "main battery temp", 1, 0 },
- { COLLIE_GPIO_BBAT_ON, "backup battery", 1, 0 },
+static struct gpio collie_batt_gpios[] = {
+ { COLLIE_GPIO_CO, GPIOF_IN, "main battery full" },
+ { COLLIE_GPIO_MAIN_BAT_LOW, GPIOF_IN, "main battery low" },
+ { COLLIE_GPIO_CHARGE_ON, GPIOF_OUT_INIT_LOW, "main charge on" },
+ { COLLIE_GPIO_MBAT_ON, GPIOF_OUT_INIT_LOW, "main battery" },
+ { COLLIE_GPIO_TMP_ON, GPIOF_OUT_INIT_LOW, "main battery temp" },
+ { COLLIE_GPIO_BBAT_ON, GPIOF_OUT_INIT_LOW, "backup battery" },
};
#ifdef CONFIG_PM
static int __devinit collie_bat_probe(struct ucb1x00_dev *dev)
{
int ret;
- int i;
if (!machine_is_collie())
return -ENODEV;
ucb = dev->ucb;
- for (i = 0; i < ARRAY_SIZE(gpios); i++) {
- ret = gpio_request(gpios[i].gpio, gpios[i].name);
- if (ret) {
- i--;
- goto err_gpio;
- }
-
- if (gpios[i].output)
- ret = gpio_direction_output(gpios[i].gpio,
- gpios[i].value);
- else
- ret = gpio_direction_input(gpios[i].gpio);
-
- if (ret)
- goto err_gpio;
- }
+ ret = gpio_request_array(collie_batt_gpios,
+ ARRAY_SIZE(collie_batt_gpios));
+ if (ret)
+ return ret;
mutex_init(&collie_bat_main.work_lock);
/* see comment in collie_bat_remove */
cancel_work_sync(&bat_work);
-
- i--;
-err_gpio:
- for (; i >= 0; i--)
- gpio_free(gpios[i].gpio);
-
+ gpio_free_array(collie_batt_gpios, ARRAY_SIZE(collie_batt_gpios));
return ret;
}
static void __devexit collie_bat_remove(struct ucb1x00_dev *dev)
{
- int i;
-
free_irq(gpio_to_irq(COLLIE_GPIO_CO), &collie_bat_main);
power_supply_unregister(&collie_bat_bu.psy);
* unregistered now.
*/
cancel_work_sync(&bat_work);
-
- for (i = ARRAY_SIZE(gpios) - 1; i >= 0; i--)
- gpio_free(gpios[i].gpio);
+ gpio_free_array(collie_batt_gpios, ARRAY_SIZE(collie_batt_gpios));
}
static struct ucb1x00_driver collie_bat_driver = {
.remove = da9030_battery_remove,
};
-static int da903x_battery_init(void)
-{
- return platform_driver_register(&da903x_battery_driver);
-}
-
-static void da903x_battery_exit(void)
-{
- platform_driver_unregister(&da903x_battery_driver);
-}
-
-module_init(da903x_battery_init);
-module_exit(da903x_battery_exit);
+module_platform_driver(da903x_battery_driver);
MODULE_DESCRIPTION("DA9030 battery charger driver");
MODULE_AUTHOR("Mike Rapoport, CompuLab");
--- /dev/null
+/*
+ * Batttery Driver for Dialog DA9052 PMICs
+ *
+ * Copyright(c) 2011 Dialog Semiconductor Ltd.
+ *
+ * Author: David Dajun Chen <dchen@diasemi.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/delay.h>
+#include <linux/freezer.h>
+#include <linux/fs.h>
+#include <linux/jiffies.h>
+#include <linux/module.h>
+#include <linux/timer.h>
+#include <linux/uaccess.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+
+#include <linux/mfd/da9052/da9052.h>
+#include <linux/mfd/da9052/pdata.h>
+#include <linux/mfd/da9052/reg.h>
+
+/* STATIC CONFIGURATION */
+#define DA9052_BAT_CUTOFF_VOLT 2800
+#define DA9052_BAT_TSH 62000
+#define DA9052_BAT_LOW_CAP 4
+#define DA9052_AVG_SZ 4
+#define DA9052_VC_TBL_SZ 68
+#define DA9052_VC_TBL_REF_SZ 3
+
+#define DA9052_ISET_USB_MASK 0x0F
+#define DA9052_CHG_USB_ILIM_MASK 0x40
+#define DA9052_CHG_LIM_COLS 16
+
+#define DA9052_MEAN(x, y) ((x + y) / 2)
+
+enum charger_type_enum {
+ DA9052_NOCHARGER = 1,
+ DA9052_CHARGER,
+};
+
+static const u16 da9052_chg_current_lim[2][DA9052_CHG_LIM_COLS] = {
+ {70, 80, 90, 100, 110, 120, 400, 450,
+ 500, 550, 600, 650, 700, 900, 1100, 1300},
+ {80, 90, 100, 110, 120, 400, 450, 500,
+ 550, 600, 800, 1000, 1200, 1400, 1600, 1800},
+};
+
+static const u16 vc_tbl_ref[3] = {10, 25, 40};
+/* Lookup table for voltage vs capacity */
+static u32 const vc_tbl[3][68][2] = {
+ /* For temperature 10 degree Celsius */
+ {
+ {4082, 100}, {4036, 98},
+ {4020, 96}, {4008, 95},
+ {3997, 93}, {3983, 91},
+ {3964, 90}, {3943, 88},
+ {3926, 87}, {3912, 85},
+ {3900, 84}, {3890, 82},
+ {3881, 80}, {3873, 79},
+ {3865, 77}, {3857, 76},
+ {3848, 74}, {3839, 73},
+ {3829, 71}, {3820, 70},
+ {3811, 68}, {3802, 67},
+ {3794, 65}, {3785, 64},
+ {3778, 62}, {3770, 61},
+ {3763, 59}, {3756, 58},
+ {3750, 56}, {3744, 55},
+ {3738, 53}, {3732, 52},
+ {3727, 50}, {3722, 49},
+ {3717, 47}, {3712, 46},
+ {3708, 44}, {3703, 43},
+ {3700, 41}, {3696, 40},
+ {3693, 38}, {3691, 37},
+ {3688, 35}, {3686, 34},
+ {3683, 32}, {3681, 31},
+ {3678, 29}, {3675, 28},
+ {3672, 26}, {3669, 25},
+ {3665, 23}, {3661, 22},
+ {3656, 21}, {3651, 19},
+ {3645, 18}, {3639, 16},
+ {3631, 15}, {3622, 13},
+ {3611, 12}, {3600, 10},
+ {3587, 9}, {3572, 7},
+ {3548, 6}, {3503, 5},
+ {3420, 3}, {3268, 2},
+ {2992, 1}, {2746, 0}
+ },
+ /* For temperature 25 degree Celsius */
+ {
+ {4102, 100}, {4065, 98},
+ {4048, 96}, {4034, 95},
+ {4021, 93}, {4011, 92},
+ {4001, 90}, {3986, 88},
+ {3968, 87}, {3952, 85},
+ {3938, 84}, {3926, 82},
+ {3916, 81}, {3908, 79},
+ {3900, 77}, {3892, 76},
+ {3883, 74}, {3874, 73},
+ {3864, 71}, {3855, 70},
+ {3846, 68}, {3836, 67},
+ {3827, 65}, {3819, 64},
+ {3810, 62}, {3801, 61},
+ {3793, 59}, {3786, 58},
+ {3778, 56}, {3772, 55},
+ {3765, 53}, {3759, 52},
+ {3754, 50}, {3748, 49},
+ {3743, 47}, {3738, 46},
+ {3733, 44}, {3728, 43},
+ {3724, 41}, {3720, 40},
+ {3716, 38}, {3712, 37},
+ {3709, 35}, {3706, 34},
+ {3703, 33}, {3701, 31},
+ {3698, 30}, {3696, 28},
+ {3693, 27}, {3690, 25},
+ {3687, 24}, {3683, 22},
+ {3680, 21}, {3675, 19},
+ {3671, 18}, {3666, 17},
+ {3660, 15}, {3654, 14},
+ {3647, 12}, {3639, 11},
+ {3630, 9}, {3621, 8},
+ {3613, 6}, {3606, 5},
+ {3597, 4}, {3582, 2},
+ {3546, 1}, {2747, 0}
+ },
+ /* For temperature 40 degree Celsius */
+ {
+ {4114, 100}, {4081, 98},
+ {4065, 96}, {4050, 95},
+ {4036, 93}, {4024, 92},
+ {4013, 90}, {4002, 88},
+ {3990, 87}, {3976, 85},
+ {3962, 84}, {3950, 82},
+ {3939, 81}, {3930, 79},
+ {3921, 77}, {3912, 76},
+ {3902, 74}, {3893, 73},
+ {3883, 71}, {3874, 70},
+ {3865, 68}, {3856, 67},
+ {3847, 65}, {3838, 64},
+ {3829, 62}, {3820, 61},
+ {3812, 59}, {3803, 58},
+ {3795, 56}, {3787, 55},
+ {3780, 53}, {3773, 52},
+ {3767, 50}, {3761, 49},
+ {3756, 47}, {3751, 46},
+ {3746, 44}, {3741, 43},
+ {3736, 41}, {3732, 40},
+ {3728, 38}, {3724, 37},
+ {3720, 35}, {3716, 34},
+ {3713, 33}, {3710, 31},
+ {3707, 30}, {3704, 28},
+ {3701, 27}, {3698, 25},
+ {3695, 24}, {3691, 22},
+ {3686, 21}, {3681, 19},
+ {3676, 18}, {3671, 17},
+ {3666, 15}, {3661, 14},
+ {3655, 12}, {3648, 11},
+ {3640, 9}, {3632, 8},
+ {3622, 6}, {3616, 5},
+ {3611, 4}, {3604, 2},
+ {3594, 1}, {2747, 0}
+ }
+};
+
+struct da9052_battery {
+ struct da9052 *da9052;
+ struct power_supply psy;
+ struct notifier_block nb;
+ int charger_type;
+ int status;
+ int health;
+};
+
+static inline int volt_reg_to_mV(int value)
+{
+ return ((value * 1000) / 512) + 2500;
+}
+
+static inline int ichg_reg_to_mA(int value)
+{
+ return (value * 3900) / 1000;
+}
+
+static int da9052_read_chgend_current(struct da9052_battery *bat,
+ int *current_mA)
+{
+ int ret;
+
+ if (bat->status == POWER_SUPPLY_STATUS_DISCHARGING)
+ return -EINVAL;
+
+ ret = da9052_reg_read(bat->da9052, DA9052_ICHG_END_REG);
+ if (ret < 0)
+ return ret;
+
+ *current_mA = ichg_reg_to_mA(ret & DA9052_ICHGEND_ICHGEND);
+
+ return 0;
+}
+
+static int da9052_read_chg_current(struct da9052_battery *bat, int *current_mA)
+{
+ int ret;
+
+ if (bat->status == POWER_SUPPLY_STATUS_DISCHARGING)
+ return -EINVAL;
+
+ ret = da9052_reg_read(bat->da9052, DA9052_ICHG_AV_REG);
+ if (ret < 0)
+ return ret;
+
+ *current_mA = ichg_reg_to_mA(ret & DA9052_ICHGAV_ICHGAV);
+
+ return 0;
+}
+
+static int da9052_bat_check_status(struct da9052_battery *bat, int *status)
+{
+ u8 v[2] = {0, 0};
+ u8 bat_status;
+ u8 chg_end;
+ int ret;
+ int chg_current;
+ int chg_end_current;
+ bool dcinsel;
+ bool dcindet;
+ bool vbussel;
+ bool vbusdet;
+ bool dc;
+ bool vbus;
+
+ ret = da9052_group_read(bat->da9052, DA9052_STATUS_A_REG, 2, v);
+ if (ret < 0)
+ return ret;
+
+ bat_status = v[0];
+ chg_end = v[1];
+
+ dcinsel = bat_status & DA9052_STATUSA_DCINSEL;
+ dcindet = bat_status & DA9052_STATUSA_DCINDET;
+ vbussel = bat_status & DA9052_STATUSA_VBUSSEL;
+ vbusdet = bat_status & DA9052_STATUSA_VBUSDET;
+ dc = dcinsel && dcindet;
+ vbus = vbussel && vbusdet;
+
+ /* Preference to WALL(DCIN) charger unit */
+ if (dc || vbus) {
+ bat->charger_type = DA9052_CHARGER;
+
+ /* If charging end flag is set and Charging current is greater
+ * than charging end limit then battery is charging
+ */
+ if ((chg_end & DA9052_STATUSB_CHGEND) != 0) {
+ ret = da9052_read_chg_current(bat, &chg_current);
+ if (ret < 0)
+ return ret;
+ ret = da9052_read_chgend_current(bat, &chg_end_current);
+ if (ret < 0)
+ return ret;
+
+ if (chg_current >= chg_end_current)
+ bat->status = POWER_SUPPLY_STATUS_CHARGING;
+ else
+ bat->status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ } else {
+ /* If Charging end flag is cleared then battery is
+ * charging
+ */
+ bat->status = POWER_SUPPLY_STATUS_CHARGING;
+ }
+ } else if (dcindet || vbusdet) {
+ bat->charger_type = DA9052_CHARGER;
+ bat->status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ } else {
+ bat->charger_type = DA9052_NOCHARGER;
+ bat->status = POWER_SUPPLY_STATUS_DISCHARGING;
+ }
+
+ if (status != NULL)
+ *status = bat->status;
+ return 0;
+}
+
+static int da9052_bat_read_volt(struct da9052_battery *bat, int *volt_mV)
+{
+ int volt;
+
+ volt = da9052_adc_manual_read(bat->da9052, DA9052_ADC_MAN_MUXSEL_VBAT);
+ if (volt < 0)
+ return volt;
+
+ *volt_mV = volt_reg_to_mV(volt);
+
+ return 0;
+}
+
+static int da9052_bat_check_presence(struct da9052_battery *bat, int *illegal)
+{
+ int bat_temp;
+
+ bat_temp = da9052_adc_read_temp(bat->da9052);
+ if (bat_temp < 0)
+ return bat_temp;
+
+ if (bat_temp > DA9052_BAT_TSH)
+ *illegal = 1;
+ else
+ *illegal = 0;
+
+ return 0;
+}
+
+static int da9052_bat_interpolate(int vbat_lower, int vbat_upper,
+ int level_lower, int level_upper,
+ int bat_voltage)
+{
+ int tmp;
+
+ tmp = ((level_upper - level_lower) * 1000) / (vbat_upper - vbat_lower);
+ tmp = level_lower + (((bat_voltage - vbat_lower) * tmp) / 1000);
+
+ return tmp;
+}
+
+unsigned char da9052_determine_vc_tbl_index(unsigned char adc_temp)
+{
+ int i;
+
+ if (adc_temp <= vc_tbl_ref[0])
+ return 0;
+
+ if (adc_temp > vc_tbl_ref[DA9052_VC_TBL_REF_SZ - 1])
+ return DA9052_VC_TBL_REF_SZ - 1;
+
+ for (i = 0; i < DA9052_VC_TBL_REF_SZ; i++) {
+ if ((adc_temp > vc_tbl_ref[i]) &&
+ (adc_temp <= DA9052_MEAN(vc_tbl_ref[i], vc_tbl_ref[i + 1])))
+ return i;
+ if ((adc_temp > DA9052_MEAN(vc_tbl_ref[i], vc_tbl_ref[i + 1]))
+ && (adc_temp <= vc_tbl_ref[i]))
+ return i + 1;
+ }
+}
+
+static int da9052_bat_read_capacity(struct da9052_battery *bat, int *capacity)
+{
+ int adc_temp;
+ int bat_voltage;
+ int vbat_lower;
+ int vbat_upper;
+ int level_upper;
+ int level_lower;
+ int ret;
+ int flag;
+ int i = 0;
+ int j;
+
+ ret = da9052_bat_read_volt(bat, &bat_voltage);
+ if (ret < 0)
+ return ret;
+
+ adc_temp = da9052_adc_read_temp(bat->da9052);
+ if (adc_temp < 0)
+ return adc_temp;
+
+ i = da9052_determine_vc_tbl_index(adc_temp);
+
+ if (bat_voltage >= vc_tbl[i][0][0]) {
+ *capacity = 100;
+ return 0;
+ }
+ if (bat_voltage <= vc_tbl[i][DA9052_VC_TBL_SZ - 1][0]) {
+ *capacity = 0;
+ return 0;
+ }
+ flag = 0;
+
+ for (j = 0; j < (DA9052_VC_TBL_SZ-1); j++) {
+ if ((bat_voltage <= vc_tbl[i][j][0]) &&
+ (bat_voltage >= vc_tbl[i][j + 1][0])) {
+ vbat_upper = vc_tbl[i][j][0];
+ vbat_lower = vc_tbl[i][j + 1][0];
+ level_upper = vc_tbl[i][j][1];
+ level_lower = vc_tbl[i][j + 1][1];
+ flag = 1;
+ break;
+ }
+ }
+ if (!flag)
+ return -EIO;
+
+ *capacity = da9052_bat_interpolate(vbat_lower, vbat_upper, level_lower,
+ level_upper, bat_voltage);
+
+ return 0;
+}
+
+static int da9052_bat_check_health(struct da9052_battery *bat, int *health)
+{
+ int ret;
+ int bat_illegal;
+ int capacity;
+
+ ret = da9052_bat_check_presence(bat, &bat_illegal);
+ if (ret < 0)
+ return ret;
+
+ if (bat_illegal) {
+ bat->health = POWER_SUPPLY_HEALTH_UNKNOWN;
+ return 0;
+ }
+
+ if (bat->health != POWER_SUPPLY_HEALTH_OVERHEAT) {
+ ret = da9052_bat_read_capacity(bat, &capacity);
+ if (ret < 0)
+ return ret;
+ if (capacity < DA9052_BAT_LOW_CAP)
+ bat->health = POWER_SUPPLY_HEALTH_DEAD;
+ else
+ bat->health = POWER_SUPPLY_HEALTH_GOOD;
+ }
+
+ *health = bat->health;
+
+ return 0;
+}
+
+static irqreturn_t da9052_bat_irq(int irq, void *data)
+{
+ struct da9052_battery *bat = data;
+
+ irq -= bat->da9052->irq_base;
+
+ if (irq == DA9052_IRQ_CHGEND)
+ bat->status = POWER_SUPPLY_STATUS_FULL;
+ else
+ da9052_bat_check_status(bat, NULL);
+
+ if (irq == DA9052_IRQ_CHGEND || irq == DA9052_IRQ_DCIN ||
+ irq == DA9052_IRQ_VBUS || irq == DA9052_IRQ_TBAT) {
+ power_supply_changed(&bat->psy);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int da9052_USB_current_notifier(struct notifier_block *nb,
+ unsigned long events, void *data)
+{
+ u8 row;
+ u8 col;
+ int *current_mA = data;
+ int ret;
+ struct da9052_battery *bat = container_of(nb, struct da9052_battery,
+ nb);
+
+ if (bat->status == POWER_SUPPLY_STATUS_DISCHARGING)
+ return -EPERM;
+
+ ret = da9052_reg_read(bat->da9052, DA9052_CHGBUCK_REG);
+ if (ret & DA9052_CHG_USB_ILIM_MASK)
+ return -EPERM;
+
+ if (bat->da9052->chip_id == DA9052)
+ row = 0;
+ else
+ row = 1;
+
+ if (*current_mA < da9052_chg_current_lim[row][0] ||
+ *current_mA > da9052_chg_current_lim[row][DA9052_CHG_LIM_COLS - 1])
+ return -EINVAL;
+
+ for (col = 0; col <= DA9052_CHG_LIM_COLS - 1 ; col++) {
+ if (*current_mA <= da9052_chg_current_lim[row][col])
+ break;
+ }
+
+ return da9052_reg_update(bat->da9052, DA9052_ISET_REG,
+ DA9052_ISET_USB_MASK, col);
+}
+
+static int da9052_bat_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ int ret;
+ int illegal;
+ struct da9052_battery *bat = container_of(psy, struct da9052_battery,
+ psy);
+
+ ret = da9052_bat_check_presence(bat, &illegal);
+ if (ret < 0)
+ return ret;
+
+ if (illegal && psp != POWER_SUPPLY_PROP_PRESENT)
+ return -ENODEV;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ ret = da9052_bat_check_status(bat, &val->intval);
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval =
+ (bat->charger_type == DA9052_NOCHARGER) ? 0 : 1;
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ ret = da9052_bat_check_presence(bat, &val->intval);
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ ret = da9052_bat_check_health(bat, &val->intval);
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
+ val->intval = DA9052_BAT_CUTOFF_VOLT * 1000;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_AVG:
+ ret = da9052_bat_read_volt(bat, &val->intval);
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_AVG:
+ ret = da9052_read_chg_current(bat, &val->intval);
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ ret = da9052_bat_read_capacity(bat, &val->intval);
+ break;
+ case POWER_SUPPLY_PROP_TEMP:
+ val->intval = da9052_adc_read_temp(bat->da9052);
+ ret = val->intval;
+ break;
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return ret;
+}
+
+static enum power_supply_property da9052_bat_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+ POWER_SUPPLY_PROP_VOLTAGE_AVG,
+ POWER_SUPPLY_PROP_CURRENT_AVG,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+};
+
+static struct power_supply template_battery = {
+ .name = "da9052-bat",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = da9052_bat_props,
+ .num_properties = ARRAY_SIZE(da9052_bat_props),
+ .get_property = da9052_bat_get_property,
+};
+
+static const char *const da9052_bat_irqs[] = {
+ "BATT TEMP",
+ "DCIN DET",
+ "DCIN REM",
+ "VBUS DET",
+ "VBUS REM",
+ "CHG END",
+};
+
+static s32 __devinit da9052_bat_probe(struct platform_device *pdev)
+{
+ struct da9052_pdata *pdata;
+ struct da9052_battery *bat;
+ int ret;
+ int irq;
+ int i;
+
+ bat = kzalloc(sizeof(struct da9052_battery), GFP_KERNEL);
+ if (!bat)
+ return -ENOMEM;
+
+ bat->da9052 = dev_get_drvdata(pdev->dev.parent);
+ bat->psy = template_battery;
+ bat->charger_type = DA9052_NOCHARGER;
+ bat->status = POWER_SUPPLY_STATUS_UNKNOWN;
+ bat->health = POWER_SUPPLY_HEALTH_UNKNOWN;
+ bat->nb.notifier_call = da9052_USB_current_notifier;
+
+ pdata = bat->da9052->dev->platform_data;
+ if (pdata != NULL && pdata->use_for_apm)
+ bat->psy.use_for_apm = pdata->use_for_apm;
+ else
+ bat->psy.use_for_apm = 1;
+
+ for (i = 0; i < ARRAY_SIZE(da9052_bat_irqs); i++) {
+ irq = platform_get_irq_byname(pdev, da9052_bat_irqs[i]);
+ ret = request_threaded_irq(bat->da9052->irq_base + irq,
+ NULL, da9052_bat_irq,
+ IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+ da9052_bat_irqs[i], bat);
+ if (ret != 0) {
+ dev_err(bat->da9052->dev,
+ "DA9052 failed to request %s IRQ %d: %d\n",
+ da9052_bat_irqs[i], irq, ret);
+ goto err;
+ }
+ }
+
+ ret = power_supply_register(&pdev->dev, &bat->psy);
+ if (ret)
+ goto err;
+
+ return 0;
+
+err:
+ for (; i >= 0; i--) {
+ irq = platform_get_irq_byname(pdev, da9052_bat_irqs[i]);
+ free_irq(bat->da9052->irq_base + irq, bat);
+ }
+ kfree(bat);
+ return ret;
+}
+static int __devexit da9052_bat_remove(struct platform_device *pdev)
+{
+ int i;
+ int irq;
+ struct da9052_battery *bat = platform_get_drvdata(pdev);
+
+ for (i = 0; i < ARRAY_SIZE(da9052_bat_irqs); i++) {
+ irq = platform_get_irq_byname(pdev, da9052_bat_irqs[i]);
+ free_irq(bat->da9052->irq_base + irq, bat);
+ }
+ power_supply_unregister(&bat->psy);
+
+ return 0;
+}
+
+static struct platform_driver da9052_bat_driver = {
+ .probe = da9052_bat_probe,
+ .remove = __devexit_p(da9052_bat_remove),
+ .driver = {
+ .name = "da9052-bat",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init da9052_bat_init(void)
+{
+ return platform_driver_register(&da9052_bat_driver);
+}
+module_init(da9052_bat_init);
+
+static void __exit da9052_bat_exit(void)
+{
+ platform_driver_unregister(&da9052_bat_driver);
+}
+module_exit(da9052_bat_exit);
+
+MODULE_DESCRIPTION("DA9052 BAT Device Driver");
+MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:da9052-bat");
2880, /* Samsung */
2880, /* BYD */
2880, /* Lishen */
- 2880 /* NEC */
+ 2880, /* NEC */
+#ifdef CONFIG_MACH_H4700
+ 0,
+ 3600, /* HP iPAQ hx4700 3.7V 3600mAh (359114-001) */
+#endif
};
/* array is level at temps 0°C, 10°C, 20°C, 30°C, 40°C
.resume = ds2760_battery_resume,
};
-static int __init ds2760_battery_init(void)
-{
- return platform_driver_register(&ds2760_battery_driver);
-}
-
-static void __exit ds2760_battery_exit(void)
-{
- platform_driver_unregister(&ds2760_battery_driver);
-}
-
-module_init(ds2760_battery_init);
-module_exit(ds2760_battery_exit);
+module_platform_driver(ds2760_battery_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Szabolcs Gyurko <szabolcs.gyurko@tlt.hu>, "
return 0;
}
-MODULE_ALIAS("platform:ds2780-battery");
-
static struct platform_driver ds2780_battery_driver = {
.driver = {
.name = "ds2780-battery",
},
.probe = ds2780_battery_probe,
- .remove = ds2780_battery_remove,
+ .remove = __devexit_p(ds2780_battery_remove),
};
-static int __init ds2780_battery_init(void)
-{
- return platform_driver_register(&ds2780_battery_driver);
-}
-
-static void __exit ds2780_battery_exit(void)
-{
- platform_driver_unregister(&ds2780_battery_driver);
-}
-
-module_init(ds2780_battery_init);
-module_exit(ds2780_battery_exit);
+module_platform_driver(ds2780_battery_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Clifton Barnes <cabarnes@indesign-llc.com>");
MODULE_DESCRIPTION("Maxim/Dallas DS2780 Stand-Alone Fuel Gauage IC driver");
+MODULE_ALIAS("platform:ds2780-battery");
},
};
-static int __init gpio_charger_init(void)
-{
- return platform_driver_register(&gpio_charger_driver);
-}
-module_init(gpio_charger_init);
-
-static void __exit gpio_charger_exit(void)
-{
- platform_driver_unregister(&gpio_charger_driver);
-}
-module_exit(gpio_charger_exit);
+module_platform_driver(gpio_charger_driver);
MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
MODULE_DESCRIPTION("Driver for chargers which report their online status through a GPIO");
#define PMIC_BATT_CHR_SBATDET_MASK (1 << 5)
#define PMIC_BATT_CHR_SDCLMT_MASK (1 << 6)
#define PMIC_BATT_CHR_SUSBOVP_MASK (1 << 7)
-#define PMIC_BATT_CHR_EXCPT_MASK 0xC6
+#define PMIC_BATT_CHR_EXCPT_MASK 0x86
+
#define PMIC_BATT_ADC_ACCCHRG_MASK (1 << 31)
#define PMIC_BATT_ADC_ACCCHRGVAL_MASK 0x7FFFFFFF
pbi->batt_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
pmic_battery_log_event(BATT_EVENT_BATOVP_EXCPT);
batt_exception = 1;
- } else if (r8 & PMIC_BATT_CHR_SDCLMT_MASK) {
- pbi->batt_health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
- pbi->batt_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
- pmic_battery_log_event(BATT_EVENT_DCLMT_EXCPT);
- batt_exception = 1;
} else if (r8 & PMIC_BATT_CHR_STEMP_MASK) {
pbi->batt_health = POWER_SUPPLY_HEALTH_OVERHEAT;
pbi->batt_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
batt_exception = 1;
} else {
pbi->batt_health = POWER_SUPPLY_HEALTH_GOOD;
+ if (r8 & PMIC_BATT_CHR_SDCLMT_MASK) {
+ /* PMIC will change charging current automatically */
+ pmic_battery_log_event(BATT_EVENT_DCLMT_EXCPT);
+ }
}
}
.remove = __devexit_p(platform_pmic_battery_remove),
};
-static int __init platform_pmic_battery_module_init(void)
-{
- return platform_driver_register(&platform_pmic_battery_driver);
-}
-
-static void __exit platform_pmic_battery_module_exit(void)
-{
- platform_driver_unregister(&platform_pmic_battery_driver);
-}
-
-module_init(platform_pmic_battery_module_init);
-module_exit(platform_pmic_battery_module_exit);
+module_platform_driver(platform_pmic_battery_driver);
MODULE_AUTHOR("Nithish Mahalingam <nithish.mahalingam@intel.com>");
MODULE_DESCRIPTION("Intel Moorestown PMIC Battery Driver");
{
struct isp1704_charger_data *board = isp->dev->platform_data;
- if (board->set_power)
+ if (board && board->set_power)
board->set_power(on);
}
.remove = __devexit_p(isp1704_charger_remove),
};
-static int __init isp1704_charger_init(void)
-{
- return platform_driver_register(&isp1704_charger_driver);
-}
-module_init(isp1704_charger_init);
-
-static void __exit isp1704_charger_exit(void)
-{
- platform_driver_unregister(&isp1704_charger_driver);
-}
-module_exit(isp1704_charger_exit);
+module_platform_driver(isp1704_charger_driver);
MODULE_ALIAS("platform:isp1704_charger");
MODULE_AUTHOR("Nokia Corporation");
static long jz_battery_read_voltage(struct jz_battery *battery)
{
- unsigned long t;
+ long t;
unsigned long val;
long voltage;
},
};
-static int __init jz_battery_init(void)
-{
- return platform_driver_register(&jz_battery_driver);
-}
-module_init(jz_battery_init);
-
-static void __exit jz_battery_exit(void)
-{
- platform_driver_unregister(&jz_battery_driver);
-}
-module_exit(jz_battery_exit);
+module_platform_driver(jz_battery_driver);
MODULE_ALIAS("platform:jz4740-battery");
MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * Driver for LP8727 Micro/Mini USB IC with intergrated charger
+ *
+ * Copyright (C) 2011 National Semiconductor
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/i2c.h>
+#include <linux/power_supply.h>
+#include <linux/lp8727.h>
+
+#define DEBOUNCE_MSEC 270
+
+/* Registers */
+#define CTRL1 0x1
+#define CTRL2 0x2
+#define SWCTRL 0x3
+#define INT1 0x4
+#define INT2 0x5
+#define STATUS1 0x6
+#define STATUS2 0x7
+#define CHGCTRL2 0x9
+
+/* CTRL1 register */
+#define CP_EN (1 << 0)
+#define ADC_EN (1 << 1)
+#define ID200_EN (1 << 4)
+
+/* CTRL2 register */
+#define CHGDET_EN (1 << 1)
+#define INT_EN (1 << 6)
+
+/* SWCTRL register */
+#define SW_DM1_DM (0x0 << 0)
+#define SW_DM1_U1 (0x1 << 0)
+#define SW_DM1_HiZ (0x7 << 0)
+#define SW_DP2_DP (0x0 << 3)
+#define SW_DP2_U2 (0x1 << 3)
+#define SW_DP2_HiZ (0x7 << 3)
+
+/* INT1 register */
+#define IDNO (0xF << 0)
+#define VBUS (1 << 4)
+
+/* STATUS1 register */
+#define CHGSTAT (3 << 4)
+#define CHPORT (1 << 6)
+#define DCPORT (1 << 7)
+
+/* STATUS2 register */
+#define TEMP_STAT (3 << 5)
+
+enum lp8727_dev_id {
+ ID_NONE,
+ ID_TA,
+ ID_DEDICATED_CHG,
+ ID_USB_CHG,
+ ID_USB_DS,
+ ID_MAX,
+};
+
+enum lp8727_chg_stat {
+ PRECHG,
+ CC,
+ CV,
+ EOC,
+};
+
+struct lp8727_psy {
+ struct power_supply ac;
+ struct power_supply usb;
+ struct power_supply batt;
+};
+
+struct lp8727_chg {
+ struct device *dev;
+ struct i2c_client *client;
+ struct mutex xfer_lock;
+ struct delayed_work work;
+ struct workqueue_struct *irqthread;
+ struct lp8727_platform_data *pdata;
+ struct lp8727_psy *psy;
+ struct lp8727_chg_param *chg_parm;
+ enum lp8727_dev_id devid;
+};
+
+static int lp8727_i2c_read(struct lp8727_chg *pchg, u8 reg, u8 *data, u8 len)
+{
+ s32 ret;
+
+ mutex_lock(&pchg->xfer_lock);
+ ret = i2c_smbus_read_i2c_block_data(pchg->client, reg, len, data);
+ mutex_unlock(&pchg->xfer_lock);
+
+ return (ret != len) ? -EIO : 0;
+}
+
+static int lp8727_i2c_write(struct lp8727_chg *pchg, u8 reg, u8 *data, u8 len)
+{
+ s32 ret;
+
+ mutex_lock(&pchg->xfer_lock);
+ ret = i2c_smbus_write_i2c_block_data(pchg->client, reg, len, data);
+ mutex_unlock(&pchg->xfer_lock);
+
+ return ret;
+}
+
+static inline int lp8727_i2c_read_byte(struct lp8727_chg *pchg, u8 reg,
+ u8 *data)
+{
+ return lp8727_i2c_read(pchg, reg, data, 1);
+}
+
+static inline int lp8727_i2c_write_byte(struct lp8727_chg *pchg, u8 reg,
+ u8 *data)
+{
+ return lp8727_i2c_write(pchg, reg, data, 1);
+}
+
+static int lp8727_is_charger_attached(const char *name, int id)
+{
+ if (name) {
+ if (!strcmp(name, "ac"))
+ return (id == ID_TA || id == ID_DEDICATED_CHG) ? 1 : 0;
+ else if (!strcmp(name, "usb"))
+ return (id == ID_USB_CHG) ? 1 : 0;
+ }
+
+ return (id >= ID_TA && id <= ID_USB_CHG) ? 1 : 0;
+}
+
+static void lp8727_init_device(struct lp8727_chg *pchg)
+{
+ u8 val;
+
+ val = ID200_EN | ADC_EN | CP_EN;
+ if (lp8727_i2c_write_byte(pchg, CTRL1, &val))
+ dev_err(pchg->dev, "i2c write err : addr=0x%.2x\n", CTRL1);
+
+ val = INT_EN | CHGDET_EN;
+ if (lp8727_i2c_write_byte(pchg, CTRL2, &val))
+ dev_err(pchg->dev, "i2c write err : addr=0x%.2x\n", CTRL2);
+}
+
+static int lp8727_is_dedicated_charger(struct lp8727_chg *pchg)
+{
+ u8 val;
+ lp8727_i2c_read_byte(pchg, STATUS1, &val);
+ return (val & DCPORT);
+}
+
+static int lp8727_is_usb_charger(struct lp8727_chg *pchg)
+{
+ u8 val;
+ lp8727_i2c_read_byte(pchg, STATUS1, &val);
+ return (val & CHPORT);
+}
+
+static void lp8727_ctrl_switch(struct lp8727_chg *pchg, u8 sw)
+{
+ u8 val = sw;
+ lp8727_i2c_write_byte(pchg, SWCTRL, &val);
+}
+
+static void lp8727_id_detection(struct lp8727_chg *pchg, u8 id, int vbusin)
+{
+ u8 devid = ID_NONE;
+ u8 swctrl = SW_DM1_HiZ | SW_DP2_HiZ;
+
+ switch (id) {
+ case 0x5:
+ devid = ID_TA;
+ pchg->chg_parm = &pchg->pdata->ac;
+ break;
+ case 0xB:
+ if (lp8727_is_dedicated_charger(pchg)) {
+ pchg->chg_parm = &pchg->pdata->ac;
+ devid = ID_DEDICATED_CHG;
+ } else if (lp8727_is_usb_charger(pchg)) {
+ pchg->chg_parm = &pchg->pdata->usb;
+ devid = ID_USB_CHG;
+ swctrl = SW_DM1_DM | SW_DP2_DP;
+ } else if (vbusin) {
+ devid = ID_USB_DS;
+ swctrl = SW_DM1_DM | SW_DP2_DP;
+ }
+ break;
+ default:
+ devid = ID_NONE;
+ pchg->chg_parm = NULL;
+ break;
+ }
+
+ pchg->devid = devid;
+ lp8727_ctrl_switch(pchg, swctrl);
+}
+
+static void lp8727_enable_chgdet(struct lp8727_chg *pchg)
+{
+ u8 val;
+
+ lp8727_i2c_read_byte(pchg, CTRL2, &val);
+ val |= CHGDET_EN;
+ lp8727_i2c_write_byte(pchg, CTRL2, &val);
+}
+
+static void lp8727_delayed_func(struct work_struct *_work)
+{
+ u8 intstat[2], idno, vbus;
+ struct lp8727_chg *pchg =
+ container_of(_work, struct lp8727_chg, work.work);
+
+ if (lp8727_i2c_read(pchg, INT1, intstat, 2)) {
+ dev_err(pchg->dev, "can not read INT registers\n");
+ return;
+ }
+
+ idno = intstat[0] & IDNO;
+ vbus = intstat[0] & VBUS;
+
+ lp8727_id_detection(pchg, idno, vbus);
+ lp8727_enable_chgdet(pchg);
+
+ power_supply_changed(&pchg->psy->ac);
+ power_supply_changed(&pchg->psy->usb);
+ power_supply_changed(&pchg->psy->batt);
+}
+
+static irqreturn_t lp8727_isr_func(int irq, void *ptr)
+{
+ struct lp8727_chg *pchg = ptr;
+ unsigned long delay = msecs_to_jiffies(DEBOUNCE_MSEC);
+
+ queue_delayed_work(pchg->irqthread, &pchg->work, delay);
+
+ return IRQ_HANDLED;
+}
+
+static void lp8727_intr_config(struct lp8727_chg *pchg)
+{
+ INIT_DELAYED_WORK(&pchg->work, lp8727_delayed_func);
+
+ pchg->irqthread = create_singlethread_workqueue("lp8727-irqthd");
+ if (!pchg->irqthread)
+ dev_err(pchg->dev, "can not create thread for lp8727\n");
+
+ if (request_threaded_irq(pchg->client->irq,
+ NULL,
+ lp8727_isr_func,
+ IRQF_TRIGGER_FALLING, "lp8727_irq", pchg)) {
+ dev_err(pchg->dev, "lp8727 irq can not be registered\n");
+ }
+}
+
+static enum power_supply_property lp8727_charger_prop[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+};
+
+static enum power_supply_property lp8727_battery_prop[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_TEMP,
+};
+
+static char *battery_supplied_to[] = {
+ "main_batt",
+};
+
+static int lp8727_charger_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct lp8727_chg *pchg = dev_get_drvdata(psy->dev->parent);
+
+ if (psp == POWER_SUPPLY_PROP_ONLINE)
+ val->intval = lp8727_is_charger_attached(psy->name,
+ pchg->devid);
+
+ return 0;
+}
+
+static int lp8727_battery_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct lp8727_chg *pchg = dev_get_drvdata(psy->dev->parent);
+ u8 read;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_STATUS:
+ if (lp8727_is_charger_attached(psy->name, pchg->devid)) {
+ lp8727_i2c_read_byte(pchg, STATUS1, &read);
+ if (((read & CHGSTAT) >> 4) == EOC)
+ val->intval = POWER_SUPPLY_STATUS_FULL;
+ else
+ val->intval = POWER_SUPPLY_STATUS_CHARGING;
+ } else {
+ val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+ }
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ lp8727_i2c_read_byte(pchg, STATUS2, &read);
+ read = (read & TEMP_STAT) >> 5;
+ if (read >= 0x1 && read <= 0x3)
+ val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
+ else
+ val->intval = POWER_SUPPLY_HEALTH_GOOD;
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ if (pchg->pdata->get_batt_present)
+ val->intval = pchg->pdata->get_batt_present();
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ if (pchg->pdata->get_batt_level)
+ val->intval = pchg->pdata->get_batt_level();
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ if (pchg->pdata->get_batt_capacity)
+ val->intval = pchg->pdata->get_batt_capacity();
+ break;
+ case POWER_SUPPLY_PROP_TEMP:
+ if (pchg->pdata->get_batt_temp)
+ val->intval = pchg->pdata->get_batt_temp();
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static void lp8727_charger_changed(struct power_supply *psy)
+{
+ struct lp8727_chg *pchg = dev_get_drvdata(psy->dev->parent);
+ u8 val;
+ u8 eoc_level, ichg;
+
+ if (lp8727_is_charger_attached(psy->name, pchg->devid)) {
+ if (pchg->chg_parm) {
+ eoc_level = pchg->chg_parm->eoc_level;
+ ichg = pchg->chg_parm->ichg;
+ val = (ichg << 4) | eoc_level;
+ lp8727_i2c_write_byte(pchg, CHGCTRL2, &val);
+ }
+ }
+}
+
+static int lp8727_register_psy(struct lp8727_chg *pchg)
+{
+ struct lp8727_psy *psy;
+
+ psy = kzalloc(sizeof(*psy), GFP_KERNEL);
+ if (!psy)
+ goto err_mem;
+
+ pchg->psy = psy;
+
+ psy->ac.name = "ac";
+ psy->ac.type = POWER_SUPPLY_TYPE_MAINS;
+ psy->ac.properties = lp8727_charger_prop;
+ psy->ac.num_properties = ARRAY_SIZE(lp8727_charger_prop);
+ psy->ac.get_property = lp8727_charger_get_property;
+ psy->ac.supplied_to = battery_supplied_to;
+ psy->ac.num_supplicants = ARRAY_SIZE(battery_supplied_to);
+
+ if (power_supply_register(pchg->dev, &psy->ac))
+ goto err_psy;
+
+ psy->usb.name = "usb";
+ psy->usb.type = POWER_SUPPLY_TYPE_USB;
+ psy->usb.properties = lp8727_charger_prop;
+ psy->usb.num_properties = ARRAY_SIZE(lp8727_charger_prop);
+ psy->usb.get_property = lp8727_charger_get_property;
+ psy->usb.supplied_to = battery_supplied_to;
+ psy->usb.num_supplicants = ARRAY_SIZE(battery_supplied_to);
+
+ if (power_supply_register(pchg->dev, &psy->usb))
+ goto err_psy;
+
+ psy->batt.name = "main_batt";
+ psy->batt.type = POWER_SUPPLY_TYPE_BATTERY;
+ psy->batt.properties = lp8727_battery_prop;
+ psy->batt.num_properties = ARRAY_SIZE(lp8727_battery_prop);
+ psy->batt.get_property = lp8727_battery_get_property;
+ psy->batt.external_power_changed = lp8727_charger_changed;
+
+ if (power_supply_register(pchg->dev, &psy->batt))
+ goto err_psy;
+
+ return 0;
+
+err_mem:
+ return -ENOMEM;
+err_psy:
+ kfree(psy);
+ return -EPERM;
+}
+
+static void lp8727_unregister_psy(struct lp8727_chg *pchg)
+{
+ struct lp8727_psy *psy = pchg->psy;
+
+ if (!psy)
+ return;
+
+ power_supply_unregister(&psy->ac);
+ power_supply_unregister(&psy->usb);
+ power_supply_unregister(&psy->batt);
+ kfree(psy);
+}
+
+static int lp8727_probe(struct i2c_client *cl, const struct i2c_device_id *id)
+{
+ struct lp8727_chg *pchg;
+ int ret;
+
+ if (!i2c_check_functionality(cl->adapter, I2C_FUNC_SMBUS_I2C_BLOCK))
+ return -EIO;
+
+ pchg = kzalloc(sizeof(*pchg), GFP_KERNEL);
+ if (!pchg)
+ return -ENOMEM;
+
+ pchg->client = cl;
+ pchg->dev = &cl->dev;
+ pchg->pdata = cl->dev.platform_data;
+ i2c_set_clientdata(cl, pchg);
+
+ mutex_init(&pchg->xfer_lock);
+
+ lp8727_init_device(pchg);
+ lp8727_intr_config(pchg);
+
+ ret = lp8727_register_psy(pchg);
+ if (ret)
+ dev_err(pchg->dev,
+ "can not register power supplies. err=%d", ret);
+
+ return 0;
+}
+
+static int __devexit lp8727_remove(struct i2c_client *cl)
+{
+ struct lp8727_chg *pchg = i2c_get_clientdata(cl);
+
+ lp8727_unregister_psy(pchg);
+ free_irq(pchg->client->irq, pchg);
+ flush_workqueue(pchg->irqthread);
+ destroy_workqueue(pchg->irqthread);
+ kfree(pchg);
+ return 0;
+}
+
+static const struct i2c_device_id lp8727_ids[] = {
+ {"lp8727", 0},
+};
+
+static struct i2c_driver lp8727_driver = {
+ .driver = {
+ .name = "lp8727",
+ },
+ .probe = lp8727_probe,
+ .remove = __devexit_p(lp8727_remove),
+ .id_table = lp8727_ids,
+};
+
+static int __init lp8727_init(void)
+{
+ return i2c_add_driver(&lp8727_driver);
+}
+
+static void __exit lp8727_exit(void)
+{
+ i2c_del_driver(&lp8727_driver);
+}
+
+module_init(lp8727_init);
+module_exit(lp8727_exit);
+
+MODULE_DESCRIPTION("National Semiconductor LP8727 charger driver");
+MODULE_AUTHOR
+ ("Woogyom Kim <milo.kim@ti.com>, Daniel Jeong <daniel.jeong@ti.com>");
+MODULE_LICENSE("GPL");
{
struct max17042_chip *chip = container_of(psy,
struct max17042_chip, battery);
+ int ret;
switch (psp) {
case POWER_SUPPLY_PROP_PRESENT:
- val->intval = max17042_read_reg(chip->client,
- MAX17042_STATUS);
- if (val->intval & MAX17042_STATUS_BattAbsent)
+ ret = max17042_read_reg(chip->client, MAX17042_STATUS);
+ if (ret < 0)
+ return ret;
+
+ if (ret & MAX17042_STATUS_BattAbsent)
val->intval = 0;
else
val->intval = 1;
break;
case POWER_SUPPLY_PROP_CYCLE_COUNT:
- val->intval = max17042_read_reg(chip->client,
- MAX17042_Cycles);
+ ret = max17042_read_reg(chip->client, MAX17042_Cycles);
+ if (ret < 0)
+ return ret;
+
+ val->intval = ret;
break;
case POWER_SUPPLY_PROP_VOLTAGE_MAX:
- val->intval = max17042_read_reg(chip->client,
- MAX17042_MinMaxVolt);
- val->intval >>= 8;
+ ret = max17042_read_reg(chip->client, MAX17042_MinMaxVolt);
+ if (ret < 0)
+ return ret;
+
+ val->intval = ret >> 8;
val->intval *= 20000; /* Units of LSB = 20mV */
break;
case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
- val->intval = max17042_read_reg(chip->client,
- MAX17042_V_empty);
- val->intval >>= 7;
+ ret = max17042_read_reg(chip->client, MAX17042_V_empty);
+ if (ret < 0)
+ return ret;
+
+ val->intval = ret >> 7;
val->intval *= 10000; /* Units of LSB = 10mV */
break;
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
- val->intval = max17042_read_reg(chip->client,
- MAX17042_VCELL) * 83; /* 1000 / 12 = 83 */
+ ret = max17042_read_reg(chip->client, MAX17042_VCELL);
+ if (ret < 0)
+ return ret;
+
+ val->intval = ret * 625 / 8;
break;
case POWER_SUPPLY_PROP_VOLTAGE_AVG:
- val->intval = max17042_read_reg(chip->client,
- MAX17042_AvgVCELL) * 83;
+ ret = max17042_read_reg(chip->client, MAX17042_AvgVCELL);
+ if (ret < 0)
+ return ret;
+
+ val->intval = ret * 625 / 8;
break;
case POWER_SUPPLY_PROP_CAPACITY:
- val->intval = max17042_read_reg(chip->client,
- MAX17042_SOC) / 256;
+ ret = max17042_read_reg(chip->client, MAX17042_SOC);
+ if (ret < 0)
+ return ret;
+
+ val->intval = ret >> 8;
break;
case POWER_SUPPLY_PROP_CHARGE_FULL:
- val->intval = max17042_read_reg(chip->client,
- MAX17042_RepSOC);
- if ((val->intval / 256) >= MAX17042_BATTERY_FULL)
+ ret = max17042_read_reg(chip->client, MAX17042_RepSOC);
+ if (ret < 0)
+ return ret;
+
+ if ((ret >> 8) >= MAX17042_BATTERY_FULL)
val->intval = 1;
- else if (val->intval >= 0)
+ else if (ret >= 0)
val->intval = 0;
break;
case POWER_SUPPLY_PROP_TEMP:
- val->intval = max17042_read_reg(chip->client,
- MAX17042_TEMP);
+ ret = max17042_read_reg(chip->client, MAX17042_TEMP);
+ if (ret < 0)
+ return ret;
+
+ val->intval = ret;
/* The value is signed. */
if (val->intval & 0x8000) {
val->intval = (0x7fff & ~val->intval) + 1;
break;
case POWER_SUPPLY_PROP_CURRENT_NOW:
if (chip->pdata->enable_current_sense) {
- val->intval = max17042_read_reg(chip->client,
- MAX17042_Current);
+ ret = max17042_read_reg(chip->client, MAX17042_Current);
+ if (ret < 0)
+ return ret;
+
+ val->intval = ret;
if (val->intval & 0x8000) {
/* Negative */
val->intval = ~val->intval & 0x7fff;
val->intval++;
val->intval *= -1;
}
- val->intval >>= 4;
- val->intval *= 1000000 * 25 / chip->pdata->r_sns;
+ val->intval *= 1562500 / chip->pdata->r_sns;
} else {
return -EINVAL;
}
break;
case POWER_SUPPLY_PROP_CURRENT_AVG:
if (chip->pdata->enable_current_sense) {
- val->intval = max17042_read_reg(chip->client,
- MAX17042_AvgCurrent);
+ ret = max17042_read_reg(chip->client,
+ MAX17042_AvgCurrent);
+ if (ret < 0)
+ return ret;
+
+ val->intval = ret;
if (val->intval & 0x8000) {
/* Negative */
val->intval = ~val->intval & 0x7fff;
if (!chip->pdata->enable_current_sense)
chip->battery.num_properties -= 2;
+ if (chip->pdata->r_sns == 0)
+ chip->pdata->r_sns = MAX17042_DEFAULT_SNS_RESISTOR;
+
ret = power_supply_register(&client->dev, &chip->battery);
if (ret) {
dev_err(&client->dev, "failed: power supply register\n");
max17042_write_reg(client, MAX17042_CGAIN, 0x0000);
max17042_write_reg(client, MAX17042_MiscCFG, 0x0003);
max17042_write_reg(client, MAX17042_LearnCFG, 0x0007);
- } else {
- if (chip->pdata->r_sns == 0)
- chip->pdata->r_sns = MAX17042_DEFAULT_SNS_RESISTOR;
}
return 0;
},
};
-static int __init max8903_init(void)
-{
- return platform_driver_register(&max8903_driver);
-}
-module_init(max8903_init);
-
-static void __exit max8903_exit(void)
-{
- platform_driver_unregister(&max8903_driver);
-}
-module_exit(max8903_exit);
+module_platform_driver(max8903_driver);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("MAX8903 Charger Driver");
MODULE_AUTHOR("MyungJoo Ham <myungjoo.ham@samsung.com>");
-MODULE_ALIAS("max8903-charger");
+MODULE_ALIAS("platform:max8903-charger");
unsigned batt_detect:1; /* detecing MB by ID pin */
unsigned topoff_threshold:2;
unsigned fast_charge:3;
+ unsigned no_temp_support:1;
+ unsigned no_insert_detect:1;
int (*set_charger) (int);
};
case MAX8925_IRQ_VCHG_DC_F:
info->ac_online = 0;
__set_charger(info, 0);
- dev_dbg(chip->dev, "Adapter is removal\n");
- break;
- case MAX8925_IRQ_VCHG_USB_R:
- info->usb_online = 1;
- __set_charger(info, 1);
- dev_dbg(chip->dev, "USB inserted\n");
- break;
- case MAX8925_IRQ_VCHG_USB_F:
- info->usb_online = 0;
- __set_charger(info, 0);
- dev_dbg(chip->dev, "USB is removal\n");
+ dev_dbg(chip->dev, "Adapter removed\n");
break;
case MAX8925_IRQ_VCHG_THM_OK_F:
/* Battery is not ready yet */
static int start_measure(struct max8925_power_info *info, int type)
{
unsigned char buf[2] = {0, 0};
+ int meas_cmd;
int meas_reg = 0, ret;
switch (type) {
case MEASURE_VCHG:
+ meas_cmd = MAX8925_CMD_VCHG;
meas_reg = MAX8925_ADC_VCHG;
break;
case MEASURE_VBBATT:
+ meas_cmd = MAX8925_CMD_VBBATT;
meas_reg = MAX8925_ADC_VBBATT;
break;
case MEASURE_VMBATT:
+ meas_cmd = MAX8925_CMD_VMBATT;
meas_reg = MAX8925_ADC_VMBATT;
break;
case MEASURE_ISNS:
+ meas_cmd = MAX8925_CMD_ISNS;
meas_reg = MAX8925_ADC_ISNS;
break;
default:
return -EINVAL;
}
+ max8925_reg_write(info->adc, meas_cmd, 0);
max8925_bulk_read(info->adc, meas_reg, 2, buf);
- ret = (buf[0] << 4) | (buf[1] >> 4);
+ ret = ((buf[0]<<8) | buf[1]) >> 4;
return ret;
}
if (info->ac_online) {
ret = start_measure(info, MEASURE_VCHG);
if (ret >= 0) {
- val->intval = ret << 1; /* unit is mV */
+ val->intval = ret * 2000; /* unit is uV */
goto out;
}
}
if (info->usb_online) {
ret = start_measure(info, MEASURE_VCHG);
if (ret >= 0) {
- val->intval = ret << 1; /* unit is mV */
+ val->intval = ret * 2000; /* unit is uV */
goto out;
}
}
union power_supply_propval *val)
{
struct max8925_power_info *info = dev_get_drvdata(psy->dev->parent);
- long long int tmp = 0;
int ret = 0;
switch (psp) {
if (info->bat_online) {
ret = start_measure(info, MEASURE_VMBATT);
if (ret >= 0) {
- val->intval = ret << 1; /* unit is mV */
+ val->intval = ret * 2000; /* unit is uV */
ret = 0;
break;
}
if (info->bat_online) {
ret = start_measure(info, MEASURE_ISNS);
if (ret >= 0) {
- tmp = (long long int)ret * 6250 / 4096 - 3125;
- ret = (int)tmp;
+ /* assume r_sns is 0.02 */
+ ret = ((ret * 6250) - 3125) /* uA */;
val->intval = 0;
if (ret > 0)
val->intval = ret; /* unit is mA */
int ret;
REQUEST_IRQ(MAX8925_IRQ_VCHG_DC_OVP, "ac-ovp");
- REQUEST_IRQ(MAX8925_IRQ_VCHG_DC_F, "ac-remove");
- REQUEST_IRQ(MAX8925_IRQ_VCHG_DC_R, "ac-insert");
- REQUEST_IRQ(MAX8925_IRQ_VCHG_USB_OVP, "usb-ovp");
- REQUEST_IRQ(MAX8925_IRQ_VCHG_USB_F, "usb-remove");
- REQUEST_IRQ(MAX8925_IRQ_VCHG_USB_R, "usb-insert");
- REQUEST_IRQ(MAX8925_IRQ_VCHG_THM_OK_R, "batt-temp-in-range");
- REQUEST_IRQ(MAX8925_IRQ_VCHG_THM_OK_F, "batt-temp-out-range");
+ if (!info->no_insert_detect) {
+ REQUEST_IRQ(MAX8925_IRQ_VCHG_DC_F, "ac-remove");
+ REQUEST_IRQ(MAX8925_IRQ_VCHG_DC_R, "ac-insert");
+ }
+ if (!info->no_temp_support) {
+ REQUEST_IRQ(MAX8925_IRQ_VCHG_THM_OK_R, "batt-temp-in-range");
+ REQUEST_IRQ(MAX8925_IRQ_VCHG_THM_OK_F, "batt-temp-out-range");
+ }
REQUEST_IRQ(MAX8925_IRQ_VCHG_SYSLOW_F, "vsys-high");
REQUEST_IRQ(MAX8925_IRQ_VCHG_SYSLOW_R, "vsys-low");
REQUEST_IRQ(MAX8925_IRQ_VCHG_RST, "charger-reset");
REQUEST_IRQ(MAX8925_IRQ_VCHG_TOPOFF, "charger-topoff");
REQUEST_IRQ(MAX8925_IRQ_VCHG_TMR_FAULT, "charger-timer-expire");
- info->ac_online = 0;
info->usb_online = 0;
info->bat_online = 0;
+
+ /* check for power - can miss interrupt at boot time */
+ if (start_measure(info, MEASURE_VCHG) * 2000 > 500000)
+ info->ac_online = 1;
+ else
+ info->ac_online = 0;
+
ret = max8925_reg_read(info->gpm, MAX8925_CHG_STATUS);
if (ret >= 0) {
/*
info->ac.properties = max8925_ac_props;
info->ac.num_properties = ARRAY_SIZE(max8925_ac_props);
info->ac.get_property = max8925_ac_get_prop;
+ info->ac.supplied_to = pdata->supplied_to;
+ info->ac.num_supplicants = pdata->num_supplicants;
ret = power_supply_register(&pdev->dev, &info->ac);
if (ret)
goto out;
info->usb.properties = max8925_usb_props;
info->usb.num_properties = ARRAY_SIZE(max8925_usb_props);
info->usb.get_property = max8925_usb_get_prop;
+ info->usb.supplied_to = pdata->supplied_to;
+ info->usb.num_supplicants = pdata->num_supplicants;
+
ret = power_supply_register(&pdev->dev, &info->usb);
if (ret)
goto out_usb;
info->topoff_threshold = pdata->topoff_threshold;
info->fast_charge = pdata->fast_charge;
info->set_charger = pdata->set_charger;
+ info->no_temp_support = pdata->no_temp_support;
+ info->no_insert_detect = pdata->no_insert_detect;
max8925_init_charger(chip, info);
return 0;
},
};
-static int __init max8925_power_init(void)
-{
- return platform_driver_register(&max8925_power_driver);
-}
-module_init(max8925_power_init);
-
-static void __exit max8925_power_exit(void)
-{
- platform_driver_unregister(&max8925_power_driver);
-}
-module_exit(max8925_power_exit);
+module_platform_driver(max8925_power_driver);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Power supply driver for MAX8925");
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-#include <linux/module.h>
#include <linux/err.h>
#include <linux/module.h>
#include <linux/slab.h>
return -EINVAL;
if (pdata->eoc_mA) {
- u8 val = (pdata->eoc_mA - 50) / 10;
+ int val = (pdata->eoc_mA - 50) / 10;
if (val < 0)
val = 0;
if (val > 0xf)
static const struct platform_device_id max8997_battery_id[] = {
{ "max8997-battery", 0 },
+ { }
};
static struct platform_driver max8997_battery_driver = {
case 0:
dev_dbg(max8998->dev,
"Full Timeout not set: leave it unchanged.\n");
+ break;
default:
dev_err(max8998->dev, "Invalid Full Timeout value\n");
ret = -EINVAL;
static const struct platform_device_id max8998_battery_id[] = {
{ "max8998-battery", TYPE_MAX8998 },
+ { }
};
static struct platform_driver max8998_battery_driver = {
.id_table = max8998_battery_id,
};
-static int __init max8998_battery_init(void)
-{
- return platform_driver_register(&max8998_battery_driver);
-}
-module_init(max8998_battery_init);
-
-static void __exit max8998_battery_cleanup(void)
-{
- platform_driver_unregister(&max8998_battery_driver);
-}
-module_exit(max8998_battery_cleanup);
+module_platform_driver(max8998_battery_driver);
MODULE_DESCRIPTION("MAXIM 8998 battery control driver");
MODULE_AUTHOR("MyungJoo Ham <myungjoo.ham@samsung.com>");
* Initialisation
*********************************************************************/
-static struct platform_device *bat_pdev;
-
static struct power_supply olpc_bat = {
+ .name = "olpc-battery",
.get_property = olpc_bat_get_property,
.use_for_apm = 1,
};
-void olpc_battery_trigger_uevent(unsigned long cause)
+static int olpc_battery_suspend(struct platform_device *pdev,
+ pm_message_t state)
{
- if (cause & EC_SCI_SRC_ACPWR)
- kobject_uevent(&olpc_ac.dev->kobj, KOBJ_CHANGE);
- if (cause & (EC_SCI_SRC_BATERR|EC_SCI_SRC_BATSOC|EC_SCI_SRC_BATTERY))
- kobject_uevent(&olpc_bat.dev->kobj, KOBJ_CHANGE);
+ if (device_may_wakeup(olpc_ac.dev))
+ olpc_ec_wakeup_set(EC_SCI_SRC_ACPWR);
+ else
+ olpc_ec_wakeup_clear(EC_SCI_SRC_ACPWR);
+
+ if (device_may_wakeup(olpc_bat.dev))
+ olpc_ec_wakeup_set(EC_SCI_SRC_BATTERY | EC_SCI_SRC_BATSOC
+ | EC_SCI_SRC_BATERR);
+ else
+ olpc_ec_wakeup_clear(EC_SCI_SRC_BATTERY | EC_SCI_SRC_BATSOC
+ | EC_SCI_SRC_BATERR);
+
+ return 0;
}
-static int __init olpc_bat_init(void)
+static int __devinit olpc_battery_probe(struct platform_device *pdev)
{
- int ret = 0;
+ int ret;
uint8_t status;
- if (!olpc_platform_info.ecver)
- return -ENXIO;
-
/*
* We've seen a number of EC protocol changes; this driver requires
* the latest EC protocol, supported by 0x44 and above.
/* Ignore the status. It doesn't actually matter */
- bat_pdev = platform_device_register_simple("olpc-battery", 0, NULL, 0);
- if (IS_ERR(bat_pdev))
- return PTR_ERR(bat_pdev);
-
- ret = power_supply_register(&bat_pdev->dev, &olpc_ac);
+ ret = power_supply_register(&pdev->dev, &olpc_ac);
if (ret)
- goto ac_failed;
+ return ret;
- olpc_bat.name = bat_pdev->name;
if (olpc_board_at_least(olpc_board_pre(0xd0))) { /* XO-1.5 */
olpc_bat.properties = olpc_xo15_bat_props;
olpc_bat.num_properties = ARRAY_SIZE(olpc_xo15_bat_props);
olpc_bat.num_properties = ARRAY_SIZE(olpc_xo1_bat_props);
}
- ret = power_supply_register(&bat_pdev->dev, &olpc_bat);
+ ret = power_supply_register(&pdev->dev, &olpc_bat);
if (ret)
goto battery_failed;
if (ret)
goto error_failed;
- goto success;
+ if (olpc_ec_wakeup_available()) {
+ device_set_wakeup_capable(olpc_ac.dev, true);
+ device_set_wakeup_capable(olpc_bat.dev, true);
+ }
+
+ return 0;
error_failed:
device_remove_bin_file(olpc_bat.dev, &olpc_bat_eeprom);
power_supply_unregister(&olpc_bat);
battery_failed:
power_supply_unregister(&olpc_ac);
-ac_failed:
- platform_device_unregister(bat_pdev);
-success:
return ret;
}
-static void __exit olpc_bat_exit(void)
+static int __devexit olpc_battery_remove(struct platform_device *pdev)
{
device_remove_file(olpc_bat.dev, &olpc_bat_error);
device_remove_bin_file(olpc_bat.dev, &olpc_bat_eeprom);
power_supply_unregister(&olpc_bat);
power_supply_unregister(&olpc_ac);
- platform_device_unregister(bat_pdev);
+ return 0;
}
-module_init(olpc_bat_init);
-module_exit(olpc_bat_exit);
+static const struct of_device_id olpc_battery_ids[] __devinitconst = {
+ { .compatible = "olpc,xo1-battery" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, olpc_battery_ids);
+
+static struct platform_driver olpc_battery_driver = {
+ .driver = {
+ .name = "olpc-battery",
+ .owner = THIS_MODULE,
+ .of_match_table = olpc_battery_ids,
+ },
+ .probe = olpc_battery_probe,
+ .remove = __devexit_p(olpc_battery_remove),
+ .suspend = olpc_battery_suspend,
+};
+
+module_platform_driver(olpc_battery_driver);
MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
MODULE_LICENSE("GPL");
.remove = __devexit_p(pcf50633_mbc_remove),
};
-static int __init pcf50633_mbc_init(void)
-{
- return platform_driver_register(&pcf50633_mbc_driver);
-}
-module_init(pcf50633_mbc_init);
-
-static void __exit pcf50633_mbc_exit(void)
-{
- platform_driver_unregister(&pcf50633_mbc_driver);
-}
-module_exit(pcf50633_mbc_exit);
+module_platform_driver(pcf50633_mbc_driver);
MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
MODULE_DESCRIPTION("PCF50633 mbc driver");
#include <linux/platform_device.h>
#include <linux/err.h>
#include <linux/interrupt.h>
+#include <linux/notifier.h>
#include <linux/power_supply.h>
#include <linux/pda_power.h>
#include <linux/regulator/consumer.h>
#ifdef CONFIG_USB_OTG_UTILS
static struct otg_transceiver *transceiver;
+static struct notifier_block otg_nb;
#endif
+
static struct regulator *ac_draw;
enum {
#ifdef CONFIG_USB_OTG_UTILS
static int otg_is_usb_online(void)
{
- return (transceiver->state == OTG_STATE_B_PERIPHERAL);
+ return (transceiver->last_event == USB_EVENT_VBUS ||
+ transceiver->last_event == USB_EVENT_ENUMERATED);
+}
+
+static int otg_is_ac_online(void)
+{
+ return (transceiver->last_event == USB_EVENT_CHARGER);
+}
+
+static int otg_handle_notification(struct notifier_block *nb,
+ unsigned long event, void *unused)
+{
+ switch (event) {
+ case USB_EVENT_CHARGER:
+ ac_status = PDA_PSY_TO_CHANGE;
+ break;
+ case USB_EVENT_VBUS:
+ case USB_EVENT_ENUMERATED:
+ usb_status = PDA_PSY_TO_CHANGE;
+ break;
+ case USB_EVENT_NONE:
+ ac_status = PDA_PSY_TO_CHANGE;
+ usb_status = PDA_PSY_TO_CHANGE;
+ break;
+ default:
+ return NOTIFY_OK;
+ }
+
+ /*
+ * Wait a bit before reading ac/usb line status and setting charger,
+ * because ac/usb status readings may lag from irq.
+ */
+ mod_timer(&charger_timer,
+ jiffies + msecs_to_jiffies(pdata->wait_for_status));
+
+ return NOTIFY_OK;
}
#endif
ret = PTR_ERR(ac_draw);
}
+#ifdef CONFIG_USB_OTG_UTILS
+ transceiver = otg_get_transceiver();
+ if (transceiver && !pdata->is_usb_online) {
+ pdata->is_usb_online = otg_is_usb_online;
+ }
+ if (transceiver && !pdata->is_ac_online) {
+ pdata->is_ac_online = otg_is_ac_online;
+ }
+#endif
+
if (pdata->is_ac_online) {
ret = power_supply_register(&pdev->dev, &pda_psy_ac);
if (ret) {
}
}
-#ifdef CONFIG_USB_OTG_UTILS
- transceiver = otg_get_transceiver();
- if (transceiver && !pdata->is_usb_online) {
- pdata->is_usb_online = otg_is_usb_online;
- }
-#endif
-
if (pdata->is_usb_online) {
ret = power_supply_register(&pdev->dev, &pda_psy_usb);
if (ret) {
}
}
+#ifdef CONFIG_USB_OTG_UTILS
+ if (transceiver && pdata->use_otg_notifier) {
+ otg_nb.notifier_call = otg_handle_notification;
+ ret = otg_register_notifier(transceiver, &otg_nb);
+ if (ret) {
+ dev_err(dev, "failure to register otg notifier\n");
+ goto otg_reg_notifier_failed;
+ }
+ polling = 0;
+ }
+#endif
+
if (polling) {
dev_dbg(dev, "will poll for status\n");
setup_timer(&polling_timer, polling_timer_func, 0);
return 0;
+#ifdef CONFIG_USB_OTG_UTILS
+otg_reg_notifier_failed:
+ if (pdata->is_usb_online && usb_irq)
+ free_irq(usb_irq->start, &pda_psy_usb);
+#endif
usb_irq_failed:
if (pdata->is_usb_online)
power_supply_unregister(&pda_psy_usb);
#define pda_power_resume NULL
#endif /* CONFIG_PM */
-MODULE_ALIAS("platform:pda-power");
-
static struct platform_driver pda_power_pdrv = {
.driver = {
.name = "pda-power",
.resume = pda_power_resume,
};
-static int __init pda_power_init(void)
-{
- return platform_driver_register(&pda_power_pdrv);
-}
+module_platform_driver(pda_power_pdrv);
-static void __exit pda_power_exit(void)
-{
- platform_driver_unregister(&pda_power_pdrv);
-}
-
-module_init(pda_power_init);
-module_exit(pda_power_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Anton Vorontsov <cbou@mail.ru>");
+MODULE_ALIAS("platform:pda-power");
{
union power_supply_propval ret = {0,};
struct power_supply *psy = dev_get_drvdata(dev);
+ unsigned int *count = data;
+ (*count)++;
if (psy->type != POWER_SUPPLY_TYPE_BATTERY) {
if (psy->get_property(psy, POWER_SUPPLY_PROP_ONLINE, &ret))
return 0;
int power_supply_is_system_supplied(void)
{
int error;
+ unsigned int count = 0;
- error = class_for_each_device(power_supply_class, NULL, NULL,
+ error = class_for_each_device(power_supply_class, NULL, &count,
__power_supply_is_system_supplied);
+ /*
+ * If no power class device was found at all, most probably we are
+ * running on a desktop system, so assume we are on mains power.
+ */
+ if (count == 0)
+ return 1;
+
return error;
}
EXPORT_SYMBOL_GPL(power_supply_is_system_supplied);
}
EXPORT_SYMBOL_GPL(power_supply_get_by_name);
+int power_supply_powers(struct power_supply *psy, struct device *dev)
+{
+ return sysfs_create_link(&psy->dev->kobj, &dev->kobj, "powers");
+}
+EXPORT_SYMBOL_GPL(power_supply_powers);
+
static void power_supply_dev_release(struct device *dev)
{
pr_debug("device: '%s': %s\n", dev_name(dev), __func__);
void power_supply_unregister(struct power_supply *psy)
{
cancel_work_sync(&psy->changed_work);
+ sysfs_remove_link(&psy->dev->kobj, "powers");
power_supply_remove_triggers(psy);
device_unregister(psy->dev);
}
struct device_attribute *attr,
char *buf) {
static char *type_text[] = {
- "Battery", "UPS", "Mains", "USB",
+ "Unknown", "Battery", "UPS", "Mains", "USB",
"USB_DCP", "USB_CDP", "USB_ACA"
};
static char *status_text[] = {
static char *capacity_level_text[] = {
"Unknown", "Critical", "Low", "Normal", "High", "Full"
};
+ static char *scope_text[] = {
+ "Unknown", "System", "Device"
+ };
ssize_t ret = 0;
struct power_supply *psy = dev_get_drvdata(dev);
const ptrdiff_t off = attr - power_supply_attrs;
dev_dbg(dev, "driver has no data for `%s' property\n",
attr->attr.name);
else if (ret != -ENODEV)
- dev_err(dev, "driver failed to report `%s' property\n",
- attr->attr.name);
+ dev_err(dev, "driver failed to report `%s' property: %zd\n",
+ attr->attr.name, ret);
return ret;
}
return sprintf(buf, "%s\n", capacity_level_text[value.intval]);
else if (off == POWER_SUPPLY_PROP_TYPE)
return sprintf(buf, "%s\n", type_text[value.intval]);
+ else if (off == POWER_SUPPLY_PROP_SCOPE)
+ return sprintf(buf, "%s\n", scope_text[value.intval]);
else if (off >= POWER_SUPPLY_PROP_MODEL_NAME)
return sprintf(buf, "%s\n", value.strval);
POWER_SUPPLY_ATTR(time_to_full_now),
POWER_SUPPLY_ATTR(time_to_full_avg),
POWER_SUPPLY_ATTR(type),
+ POWER_SUPPLY_ATTR(scope),
/* Properties of type `const char *' */
POWER_SUPPLY_ATTR(model_name),
POWER_SUPPLY_ATTR(manufacturer),
msecs_to_jiffies(JITTER_DELAY));
}
+static int gather_samples(struct s3c_adc_client *client, int num, int channel)
+{
+ int value, i;
+
+ /* default to 1 if nothing is set */
+ if (num < 1)
+ num = 1;
+
+ value = 0;
+ for (i = 0; i < num; i++)
+ value += s3c_adc_read(client, channel);
+ value /= num;
+
+ return value;
+}
+
static enum power_supply_property s3c_adc_backup_bat_props[] = {
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_VOLTAGE_MIN,
if (bat->volt_value < 0 ||
jiffies_to_msecs(jiffies - bat->timestamp) >
BAT_POLL_INTERVAL) {
- bat->volt_value = s3c_adc_read(bat->client,
+ bat->volt_value = gather_samples(bat->client,
+ bat->pdata->backup_volt_samples,
bat->pdata->backup_volt_channel);
bat->volt_value *= bat->pdata->backup_volt_mult;
bat->timestamp = jiffies;
if (bat->volt_value < 0 || bat->cur_value < 0 ||
jiffies_to_msecs(jiffies - bat->timestamp) >
BAT_POLL_INTERVAL) {
- bat->volt_value = s3c_adc_read(bat->client,
+ bat->volt_value = gather_samples(bat->client,
+ bat->pdata->volt_samples,
bat->pdata->volt_channel) * bat->pdata->volt_mult;
- bat->cur_value = s3c_adc_read(bat->client,
+ bat->cur_value = gather_samples(bat->client,
+ bat->pdata->current_samples,
bat->pdata->current_channel) * bat->pdata->current_mult;
bat->timestamp = jiffies;
}
.resume = s3c_adc_bat_resume,
};
-static int __init s3c_adc_bat_init(void)
-{
- return platform_driver_register(&s3c_adc_bat_driver);
-}
-module_init(s3c_adc_bat_init);
-
-static void __exit s3c_adc_bat_exit(void)
-{
- platform_driver_unregister(&s3c_adc_bat_driver);
-}
-module_exit(s3c_adc_bat_exit);
+module_platform_driver(s3c_adc_bat_driver);
MODULE_AUTHOR("Vasily Khoruzhick <anarsoul@gmail.com>");
MODULE_DESCRIPTION("iPAQ H1930/H1940/RX1950 battery controller driver");
/*
- * Gas Gauge driver for TI's BQ20Z75
+ * Gas Gauge driver for SBS Compliant Batteries
*
* Copyright (c) 2010, NVIDIA Corporation.
*
#include <linux/interrupt.h>
#include <linux/gpio.h>
-#include <linux/power/bq20z75.h>
+#include <linux/power/sbs-battery.h>
enum {
REG_MANUFACTURER_DATA,
/* Battery Mode defines */
#define BATTERY_MODE_OFFSET 0x03
#define BATTERY_MODE_MASK 0x8000
-enum bq20z75_battery_mode {
+enum sbs_battery_mode {
BATTERY_MODE_AMPS,
BATTERY_MODE_WATTS
};
#define BATTERY_FULL_CHARGED 0x20
#define BATTERY_FULL_DISCHARGED 0x10
-#define BQ20Z75_DATA(_psp, _addr, _min_value, _max_value) { \
+#define SBS_DATA(_psp, _addr, _min_value, _max_value) { \
.psp = _psp, \
.addr = _addr, \
.min_value = _min_value, \
.max_value = _max_value, \
}
-static const struct bq20z75_device_data {
+static const struct chip_data {
enum power_supply_property psp;
u8 addr;
int min_value;
int max_value;
-} bq20z75_data[] = {
+} sbs_data[] = {
[REG_MANUFACTURER_DATA] =
- BQ20Z75_DATA(POWER_SUPPLY_PROP_PRESENT, 0x00, 0, 65535),
+ SBS_DATA(POWER_SUPPLY_PROP_PRESENT, 0x00, 0, 65535),
[REG_TEMPERATURE] =
- BQ20Z75_DATA(POWER_SUPPLY_PROP_TEMP, 0x08, 0, 65535),
+ SBS_DATA(POWER_SUPPLY_PROP_TEMP, 0x08, 0, 65535),
[REG_VOLTAGE] =
- BQ20Z75_DATA(POWER_SUPPLY_PROP_VOLTAGE_NOW, 0x09, 0, 20000),
+ SBS_DATA(POWER_SUPPLY_PROP_VOLTAGE_NOW, 0x09, 0, 20000),
[REG_CURRENT] =
- BQ20Z75_DATA(POWER_SUPPLY_PROP_CURRENT_NOW, 0x0A, -32768,
- 32767),
+ SBS_DATA(POWER_SUPPLY_PROP_CURRENT_NOW, 0x0A, -32768, 32767),
[REG_CAPACITY] =
- BQ20Z75_DATA(POWER_SUPPLY_PROP_CAPACITY, 0x0E, 0, 100),
+ SBS_DATA(POWER_SUPPLY_PROP_CAPACITY, 0x0E, 0, 100),
[REG_REMAINING_CAPACITY] =
- BQ20Z75_DATA(POWER_SUPPLY_PROP_ENERGY_NOW, 0x0F, 0, 65535),
+ SBS_DATA(POWER_SUPPLY_PROP_ENERGY_NOW, 0x0F, 0, 65535),
[REG_REMAINING_CAPACITY_CHARGE] =
- BQ20Z75_DATA(POWER_SUPPLY_PROP_CHARGE_NOW, 0x0F, 0, 65535),
+ SBS_DATA(POWER_SUPPLY_PROP_CHARGE_NOW, 0x0F, 0, 65535),
[REG_FULL_CHARGE_CAPACITY] =
- BQ20Z75_DATA(POWER_SUPPLY_PROP_ENERGY_FULL, 0x10, 0, 65535),
+ SBS_DATA(POWER_SUPPLY_PROP_ENERGY_FULL, 0x10, 0, 65535),
[REG_FULL_CHARGE_CAPACITY_CHARGE] =
- BQ20Z75_DATA(POWER_SUPPLY_PROP_CHARGE_FULL, 0x10, 0, 65535),
+ SBS_DATA(POWER_SUPPLY_PROP_CHARGE_FULL, 0x10, 0, 65535),
[REG_TIME_TO_EMPTY] =
- BQ20Z75_DATA(POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG, 0x12, 0,
- 65535),
+ SBS_DATA(POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG, 0x12, 0, 65535),
[REG_TIME_TO_FULL] =
- BQ20Z75_DATA(POWER_SUPPLY_PROP_TIME_TO_FULL_AVG, 0x13, 0,
- 65535),
+ SBS_DATA(POWER_SUPPLY_PROP_TIME_TO_FULL_AVG, 0x13, 0, 65535),
[REG_STATUS] =
- BQ20Z75_DATA(POWER_SUPPLY_PROP_STATUS, 0x16, 0, 65535),
+ SBS_DATA(POWER_SUPPLY_PROP_STATUS, 0x16, 0, 65535),
[REG_CYCLE_COUNT] =
- BQ20Z75_DATA(POWER_SUPPLY_PROP_CYCLE_COUNT, 0x17, 0, 65535),
+ SBS_DATA(POWER_SUPPLY_PROP_CYCLE_COUNT, 0x17, 0, 65535),
[REG_DESIGN_CAPACITY] =
- BQ20Z75_DATA(POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN, 0x18, 0,
- 65535),
+ SBS_DATA(POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN, 0x18, 0, 65535),
[REG_DESIGN_CAPACITY_CHARGE] =
- BQ20Z75_DATA(POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 0x18, 0,
- 65535),
+ SBS_DATA(POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, 0x18, 0, 65535),
[REG_DESIGN_VOLTAGE] =
- BQ20Z75_DATA(POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN, 0x19, 0,
- 65535),
+ SBS_DATA(POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN, 0x19, 0, 65535),
[REG_SERIAL_NUMBER] =
- BQ20Z75_DATA(POWER_SUPPLY_PROP_SERIAL_NUMBER, 0x1C, 0, 65535),
+ SBS_DATA(POWER_SUPPLY_PROP_SERIAL_NUMBER, 0x1C, 0, 65535),
};
-static enum power_supply_property bq20z75_properties[] = {
+static enum power_supply_property sbs_properties[] = {
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_HEALTH,
POWER_SUPPLY_PROP_PRESENT,
POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
};
-struct bq20z75_info {
+struct sbs_info {
struct i2c_client *client;
struct power_supply power_supply;
- struct bq20z75_platform_data *pdata;
+ struct sbs_platform_data *pdata;
bool is_present;
bool gpio_detect;
bool enable_detection;
int ignore_changes;
};
-static int bq20z75_read_word_data(struct i2c_client *client, u8 address)
+static int sbs_read_word_data(struct i2c_client *client, u8 address)
{
- struct bq20z75_info *bq20z75_device = i2c_get_clientdata(client);
+ struct sbs_info *chip = i2c_get_clientdata(client);
s32 ret = 0;
int retries = 1;
- if (bq20z75_device->pdata)
- retries = max(bq20z75_device->pdata->i2c_retry_count + 1, 1);
+ if (chip->pdata)
+ retries = max(chip->pdata->i2c_retry_count + 1, 1);
while (retries > 0) {
ret = i2c_smbus_read_word_data(client, address);
return le16_to_cpu(ret);
}
-static int bq20z75_write_word_data(struct i2c_client *client, u8 address,
+static int sbs_write_word_data(struct i2c_client *client, u8 address,
u16 value)
{
- struct bq20z75_info *bq20z75_device = i2c_get_clientdata(client);
+ struct sbs_info *chip = i2c_get_clientdata(client);
s32 ret = 0;
int retries = 1;
- if (bq20z75_device->pdata)
- retries = max(bq20z75_device->pdata->i2c_retry_count + 1, 1);
+ if (chip->pdata)
+ retries = max(chip->pdata->i2c_retry_count + 1, 1);
while (retries > 0) {
ret = i2c_smbus_write_word_data(client, address,
return 0;
}
-static int bq20z75_get_battery_presence_and_health(
+static int sbs_get_battery_presence_and_health(
struct i2c_client *client, enum power_supply_property psp,
union power_supply_propval *val)
{
s32 ret;
- struct bq20z75_info *bq20z75_device = i2c_get_clientdata(client);
+ struct sbs_info *chip = i2c_get_clientdata(client);
if (psp == POWER_SUPPLY_PROP_PRESENT &&
- bq20z75_device->gpio_detect) {
- ret = gpio_get_value(
- bq20z75_device->pdata->battery_detect);
- if (ret == bq20z75_device->pdata->battery_detect_present)
+ chip->gpio_detect) {
+ ret = gpio_get_value(chip->pdata->battery_detect);
+ if (ret == chip->pdata->battery_detect_present)
val->intval = 1;
else
val->intval = 0;
- bq20z75_device->is_present = val->intval;
+ chip->is_present = val->intval;
return ret;
}
/* Write to ManufacturerAccess with
* ManufacturerAccess command and then
* read the status */
- ret = bq20z75_write_word_data(client,
- bq20z75_data[REG_MANUFACTURER_DATA].addr,
- MANUFACTURER_ACCESS_STATUS);
+ ret = sbs_write_word_data(client, sbs_data[REG_MANUFACTURER_DATA].addr,
+ MANUFACTURER_ACCESS_STATUS);
if (ret < 0) {
if (psp == POWER_SUPPLY_PROP_PRESENT)
val->intval = 0; /* battery removed */
return ret;
}
- ret = bq20z75_read_word_data(client,
- bq20z75_data[REG_MANUFACTURER_DATA].addr);
+ ret = sbs_read_word_data(client, sbs_data[REG_MANUFACTURER_DATA].addr);
if (ret < 0)
return ret;
- if (ret < bq20z75_data[REG_MANUFACTURER_DATA].min_value ||
- ret > bq20z75_data[REG_MANUFACTURER_DATA].max_value) {
+ if (ret < sbs_data[REG_MANUFACTURER_DATA].min_value ||
+ ret > sbs_data[REG_MANUFACTURER_DATA].max_value) {
val->intval = 0;
return 0;
}
return 0;
}
-static int bq20z75_get_battery_property(struct i2c_client *client,
+static int sbs_get_battery_property(struct i2c_client *client,
int reg_offset, enum power_supply_property psp,
union power_supply_propval *val)
{
- struct bq20z75_info *bq20z75_device = i2c_get_clientdata(client);
+ struct sbs_info *chip = i2c_get_clientdata(client);
s32 ret;
- ret = bq20z75_read_word_data(client,
- bq20z75_data[reg_offset].addr);
+ ret = sbs_read_word_data(client, sbs_data[reg_offset].addr);
if (ret < 0)
return ret;
/* returned values are 16 bit */
- if (bq20z75_data[reg_offset].min_value < 0)
+ if (sbs_data[reg_offset].min_value < 0)
ret = (s16)ret;
- if (ret >= bq20z75_data[reg_offset].min_value &&
- ret <= bq20z75_data[reg_offset].max_value) {
+ if (ret >= sbs_data[reg_offset].min_value &&
+ ret <= sbs_data[reg_offset].max_value) {
val->intval = ret;
if (psp != POWER_SUPPLY_PROP_STATUS)
return 0;
else
val->intval = POWER_SUPPLY_STATUS_CHARGING;
- if (bq20z75_device->poll_time == 0)
- bq20z75_device->last_state = val->intval;
- else if (bq20z75_device->last_state != val->intval) {
- cancel_delayed_work_sync(&bq20z75_device->work);
- power_supply_changed(&bq20z75_device->power_supply);
- bq20z75_device->poll_time = 0;
+ if (chip->poll_time == 0)
+ chip->last_state = val->intval;
+ else if (chip->last_state != val->intval) {
+ cancel_delayed_work_sync(&chip->work);
+ power_supply_changed(&chip->power_supply);
+ chip->poll_time = 0;
}
} else {
if (psp == POWER_SUPPLY_PROP_STATUS)
return 0;
}
-static void bq20z75_unit_adjustment(struct i2c_client *client,
+static void sbs_unit_adjustment(struct i2c_client *client,
enum power_supply_property psp, union power_supply_propval *val)
{
#define BASE_UNIT_CONVERSION 1000
case POWER_SUPPLY_PROP_ENERGY_NOW:
case POWER_SUPPLY_PROP_ENERGY_FULL:
case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
- /* bq20z75 provides energy in units of 10mWh.
+ /* sbs provides energy in units of 10mWh.
* Convert to µWh
*/
val->intval *= BATTERY_MODE_CAP_MULT_WATT;
break;
case POWER_SUPPLY_PROP_TEMP:
- /* bq20z75 provides battery temperature in 0.1K
+ /* sbs provides battery temperature in 0.1K
* so convert it to 0.1°C
*/
val->intval -= TEMP_KELVIN_TO_CELSIUS;
case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
case POWER_SUPPLY_PROP_TIME_TO_FULL_AVG:
- /* bq20z75 provides time to empty and time to full in minutes.
+ /* sbs provides time to empty and time to full in minutes.
* Convert to seconds
*/
val->intval *= TIME_UNIT_CONVERSION;
}
}
-static enum bq20z75_battery_mode
-bq20z75_set_battery_mode(struct i2c_client *client,
- enum bq20z75_battery_mode mode)
+static enum sbs_battery_mode sbs_set_battery_mode(struct i2c_client *client,
+ enum sbs_battery_mode mode)
{
int ret, original_val;
- original_val = bq20z75_read_word_data(client, BATTERY_MODE_OFFSET);
+ original_val = sbs_read_word_data(client, BATTERY_MODE_OFFSET);
if (original_val < 0)
return original_val;
else
ret = original_val | BATTERY_MODE_MASK;
- ret = bq20z75_write_word_data(client, BATTERY_MODE_OFFSET, ret);
+ ret = sbs_write_word_data(client, BATTERY_MODE_OFFSET, ret);
if (ret < 0)
return ret;
return original_val & BATTERY_MODE_MASK;
}
-static int bq20z75_get_battery_capacity(struct i2c_client *client,
+static int sbs_get_battery_capacity(struct i2c_client *client,
int reg_offset, enum power_supply_property psp,
union power_supply_propval *val)
{
s32 ret;
- enum bq20z75_battery_mode mode = BATTERY_MODE_WATTS;
+ enum sbs_battery_mode mode = BATTERY_MODE_WATTS;
if (power_supply_is_amp_property(psp))
mode = BATTERY_MODE_AMPS;
- mode = bq20z75_set_battery_mode(client, mode);
+ mode = sbs_set_battery_mode(client, mode);
if (mode < 0)
return mode;
- ret = bq20z75_read_word_data(client, bq20z75_data[reg_offset].addr);
+ ret = sbs_read_word_data(client, sbs_data[reg_offset].addr);
if (ret < 0)
return ret;
if (psp == POWER_SUPPLY_PROP_CAPACITY) {
- /* bq20z75 spec says that this can be >100 %
+ /* sbs spec says that this can be >100 %
* even if max value is 100 % */
val->intval = min(ret, 100);
} else
val->intval = ret;
- ret = bq20z75_set_battery_mode(client, mode);
+ ret = sbs_set_battery_mode(client, mode);
if (ret < 0)
return ret;
return 0;
}
-static char bq20z75_serial[5];
-static int bq20z75_get_battery_serial_number(struct i2c_client *client,
+static char sbs_serial[5];
+static int sbs_get_battery_serial_number(struct i2c_client *client,
union power_supply_propval *val)
{
int ret;
- ret = bq20z75_read_word_data(client,
- bq20z75_data[REG_SERIAL_NUMBER].addr);
+ ret = sbs_read_word_data(client, sbs_data[REG_SERIAL_NUMBER].addr);
if (ret < 0)
return ret;
- ret = sprintf(bq20z75_serial, "%04x", ret);
- val->strval = bq20z75_serial;
+ ret = sprintf(sbs_serial, "%04x", ret);
+ val->strval = sbs_serial;
return 0;
}
-static int bq20z75_get_property_index(struct i2c_client *client,
+static int sbs_get_property_index(struct i2c_client *client,
enum power_supply_property psp)
{
int count;
- for (count = 0; count < ARRAY_SIZE(bq20z75_data); count++)
- if (psp == bq20z75_data[count].psp)
+ for (count = 0; count < ARRAY_SIZE(sbs_data); count++)
+ if (psp == sbs_data[count].psp)
return count;
dev_warn(&client->dev,
return -EINVAL;
}
-static int bq20z75_get_property(struct power_supply *psy,
+static int sbs_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
int ret = 0;
- struct bq20z75_info *bq20z75_device = container_of(psy,
- struct bq20z75_info, power_supply);
- struct i2c_client *client = bq20z75_device->client;
+ struct sbs_info *chip = container_of(psy,
+ struct sbs_info, power_supply);
+ struct i2c_client *client = chip->client;
switch (psp) {
case POWER_SUPPLY_PROP_PRESENT:
case POWER_SUPPLY_PROP_HEALTH:
- ret = bq20z75_get_battery_presence_and_health(client, psp, val);
+ ret = sbs_get_battery_presence_and_health(client, psp, val);
if (psp == POWER_SUPPLY_PROP_PRESENT)
return 0;
break;
case POWER_SUPPLY_PROP_CHARGE_FULL:
case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
case POWER_SUPPLY_PROP_CAPACITY:
- ret = bq20z75_get_property_index(client, psp);
+ ret = sbs_get_property_index(client, psp);
if (ret < 0)
break;
- ret = bq20z75_get_battery_capacity(client, ret, psp, val);
+ ret = sbs_get_battery_capacity(client, ret, psp, val);
break;
case POWER_SUPPLY_PROP_SERIAL_NUMBER:
- ret = bq20z75_get_battery_serial_number(client, val);
+ ret = sbs_get_battery_serial_number(client, val);
break;
case POWER_SUPPLY_PROP_STATUS:
case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
case POWER_SUPPLY_PROP_TIME_TO_FULL_AVG:
case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
- ret = bq20z75_get_property_index(client, psp);
+ ret = sbs_get_property_index(client, psp);
if (ret < 0)
break;
- ret = bq20z75_get_battery_property(client, ret, psp, val);
+ ret = sbs_get_battery_property(client, ret, psp, val);
break;
default:
return -EINVAL;
}
- if (!bq20z75_device->enable_detection)
+ if (!chip->enable_detection)
goto done;
- if (!bq20z75_device->gpio_detect &&
- bq20z75_device->is_present != (ret >= 0)) {
- bq20z75_device->is_present = (ret >= 0);
- power_supply_changed(&bq20z75_device->power_supply);
+ if (!chip->gpio_detect &&
+ chip->is_present != (ret >= 0)) {
+ chip->is_present = (ret >= 0);
+ power_supply_changed(&chip->power_supply);
}
done:
if (!ret) {
/* Convert units to match requirements for power supply class */
- bq20z75_unit_adjustment(client, psp, val);
+ sbs_unit_adjustment(client, psp, val);
}
dev_dbg(&client->dev,
"%s: property = %d, value = %x\n", __func__, psp, val->intval);
- if (ret && bq20z75_device->is_present)
+ if (ret && chip->is_present)
return ret;
/* battery not present, so return NODATA for properties */
return 0;
}
-static irqreturn_t bq20z75_irq(int irq, void *devid)
+static irqreturn_t sbs_irq(int irq, void *devid)
{
struct power_supply *battery = devid;
return IRQ_HANDLED;
}
-static void bq20z75_external_power_changed(struct power_supply *psy)
+static void sbs_external_power_changed(struct power_supply *psy)
{
- struct bq20z75_info *bq20z75_device;
+ struct sbs_info *chip;
- bq20z75_device = container_of(psy, struct bq20z75_info, power_supply);
+ chip = container_of(psy, struct sbs_info, power_supply);
- if (bq20z75_device->ignore_changes > 0) {
- bq20z75_device->ignore_changes--;
+ if (chip->ignore_changes > 0) {
+ chip->ignore_changes--;
return;
}
/* cancel outstanding work */
- cancel_delayed_work_sync(&bq20z75_device->work);
+ cancel_delayed_work_sync(&chip->work);
- schedule_delayed_work(&bq20z75_device->work, HZ);
- bq20z75_device->poll_time = bq20z75_device->pdata->poll_retry_count;
+ schedule_delayed_work(&chip->work, HZ);
+ chip->poll_time = chip->pdata->poll_retry_count;
}
-static void bq20z75_delayed_work(struct work_struct *work)
+static void sbs_delayed_work(struct work_struct *work)
{
- struct bq20z75_info *bq20z75_device;
+ struct sbs_info *chip;
s32 ret;
- bq20z75_device = container_of(work, struct bq20z75_info, work.work);
+ chip = container_of(work, struct sbs_info, work.work);
- ret = bq20z75_read_word_data(bq20z75_device->client,
- bq20z75_data[REG_STATUS].addr);
+ ret = sbs_read_word_data(chip->client, sbs_data[REG_STATUS].addr);
/* if the read failed, give up on this work */
if (ret < 0) {
- bq20z75_device->poll_time = 0;
+ chip->poll_time = 0;
return;
}
else
ret = POWER_SUPPLY_STATUS_CHARGING;
- if (bq20z75_device->last_state != ret) {
- bq20z75_device->poll_time = 0;
- power_supply_changed(&bq20z75_device->power_supply);
+ if (chip->last_state != ret) {
+ chip->poll_time = 0;
+ power_supply_changed(&chip->power_supply);
return;
}
- if (bq20z75_device->poll_time > 0) {
- schedule_delayed_work(&bq20z75_device->work, HZ);
- bq20z75_device->poll_time--;
+ if (chip->poll_time > 0) {
+ schedule_delayed_work(&chip->work, HZ);
+ chip->poll_time--;
return;
}
}
-static int __devinit bq20z75_probe(struct i2c_client *client,
+#if defined(CONFIG_OF)
+
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+
+static const struct of_device_id sbs_dt_ids[] = {
+ { .compatible = "sbs,sbs-battery" },
+ { .compatible = "ti,bq20z75" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, sbs_dt_ids);
+
+static struct sbs_platform_data *sbs_of_populate_pdata(
+ struct i2c_client *client)
+{
+ struct device_node *of_node = client->dev.of_node;
+ struct sbs_platform_data *pdata = client->dev.platform_data;
+ enum of_gpio_flags gpio_flags;
+ int rc;
+ u32 prop;
+
+ /* verify this driver matches this device */
+ if (!of_node)
+ return NULL;
+
+ /* if platform data is set, honor it */
+ if (pdata)
+ return pdata;
+
+ /* first make sure at least one property is set, otherwise
+ * it won't change behavior from running without pdata.
+ */
+ if (!of_get_property(of_node, "sbs,i2c-retry-count", NULL) &&
+ !of_get_property(of_node, "sbs,poll-retry-count", NULL) &&
+ !of_get_property(of_node, "sbs,battery-detect-gpios", NULL))
+ goto of_out;
+
+ pdata = devm_kzalloc(&client->dev, sizeof(struct sbs_platform_data),
+ GFP_KERNEL);
+ if (!pdata)
+ goto of_out;
+
+ rc = of_property_read_u32(of_node, "sbs,i2c-retry-count", &prop);
+ if (!rc)
+ pdata->i2c_retry_count = prop;
+
+ rc = of_property_read_u32(of_node, "sbs,poll-retry-count", &prop);
+ if (!rc)
+ pdata->poll_retry_count = prop;
+
+ if (!of_get_property(of_node, "sbs,battery-detect-gpios", NULL)) {
+ pdata->battery_detect = -1;
+ goto of_out;
+ }
+
+ pdata->battery_detect = of_get_named_gpio_flags(of_node,
+ "sbs,battery-detect-gpios", 0, &gpio_flags);
+
+ if (gpio_flags & OF_GPIO_ACTIVE_LOW)
+ pdata->battery_detect_present = 0;
+ else
+ pdata->battery_detect_present = 1;
+
+of_out:
+ return pdata;
+}
+#else
+#define sbs_dt_ids NULL
+static struct sbs_platform_data *sbs_of_populate_pdata(
+ struct i2c_client *client)
+{
+ return client->dev.platform_data;
+}
+#endif
+
+static int __devinit sbs_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
- struct bq20z75_info *bq20z75_device;
- struct bq20z75_platform_data *pdata = client->dev.platform_data;
+ struct sbs_info *chip;
+ struct sbs_platform_data *pdata = client->dev.platform_data;
int rc;
int irq;
+ char *name;
- bq20z75_device = kzalloc(sizeof(struct bq20z75_info), GFP_KERNEL);
- if (!bq20z75_device)
+ name = kasprintf(GFP_KERNEL, "sbs-%s", dev_name(&client->dev));
+ if (!name) {
+ dev_err(&client->dev, "Failed to allocate device name\n");
return -ENOMEM;
+ }
+
+ chip = kzalloc(sizeof(struct sbs_info), GFP_KERNEL);
+ if (!chip) {
+ rc = -ENOMEM;
+ goto exit_free_name;
+ }
- bq20z75_device->client = client;
- bq20z75_device->enable_detection = false;
- bq20z75_device->gpio_detect = false;
- bq20z75_device->power_supply.name = "battery";
- bq20z75_device->power_supply.type = POWER_SUPPLY_TYPE_BATTERY;
- bq20z75_device->power_supply.properties = bq20z75_properties;
- bq20z75_device->power_supply.num_properties =
- ARRAY_SIZE(bq20z75_properties);
- bq20z75_device->power_supply.get_property = bq20z75_get_property;
+ chip->client = client;
+ chip->enable_detection = false;
+ chip->gpio_detect = false;
+ chip->power_supply.name = name;
+ chip->power_supply.type = POWER_SUPPLY_TYPE_BATTERY;
+ chip->power_supply.properties = sbs_properties;
+ chip->power_supply.num_properties = ARRAY_SIZE(sbs_properties);
+ chip->power_supply.get_property = sbs_get_property;
/* ignore first notification of external change, it is generated
* from the power_supply_register call back
*/
- bq20z75_device->ignore_changes = 1;
- bq20z75_device->last_state = POWER_SUPPLY_STATUS_UNKNOWN;
- bq20z75_device->power_supply.external_power_changed =
- bq20z75_external_power_changed;
+ chip->ignore_changes = 1;
+ chip->last_state = POWER_SUPPLY_STATUS_UNKNOWN;
+ chip->power_supply.external_power_changed = sbs_external_power_changed;
+
+ pdata = sbs_of_populate_pdata(client);
if (pdata) {
- bq20z75_device->gpio_detect =
- gpio_is_valid(pdata->battery_detect);
- bq20z75_device->pdata = pdata;
+ chip->gpio_detect = gpio_is_valid(pdata->battery_detect);
+ chip->pdata = pdata;
}
- i2c_set_clientdata(client, bq20z75_device);
+ i2c_set_clientdata(client, chip);
- if (!bq20z75_device->gpio_detect)
+ if (!chip->gpio_detect)
goto skip_gpio;
rc = gpio_request(pdata->battery_detect, dev_name(&client->dev));
if (rc) {
dev_warn(&client->dev, "Failed to request gpio: %d\n", rc);
- bq20z75_device->gpio_detect = false;
+ chip->gpio_detect = false;
goto skip_gpio;
}
if (rc) {
dev_warn(&client->dev, "Failed to get gpio as input: %d\n", rc);
gpio_free(pdata->battery_detect);
- bq20z75_device->gpio_detect = false;
+ chip->gpio_detect = false;
goto skip_gpio;
}
if (irq <= 0) {
dev_warn(&client->dev, "Failed to get gpio as irq: %d\n", irq);
gpio_free(pdata->battery_detect);
- bq20z75_device->gpio_detect = false;
+ chip->gpio_detect = false;
goto skip_gpio;
}
- rc = request_irq(irq, bq20z75_irq,
+ rc = request_irq(irq, sbs_irq,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
- dev_name(&client->dev), &bq20z75_device->power_supply);
+ dev_name(&client->dev), &chip->power_supply);
if (rc) {
dev_warn(&client->dev, "Failed to request irq: %d\n", rc);
gpio_free(pdata->battery_detect);
- bq20z75_device->gpio_detect = false;
+ chip->gpio_detect = false;
goto skip_gpio;
}
- bq20z75_device->irq = irq;
+ chip->irq = irq;
skip_gpio:
- rc = power_supply_register(&client->dev, &bq20z75_device->power_supply);
+ rc = power_supply_register(&client->dev, &chip->power_supply);
if (rc) {
dev_err(&client->dev,
"%s: Failed to register power supply\n", __func__);
dev_info(&client->dev,
"%s: battery gas gauge device registered\n", client->name);
- INIT_DELAYED_WORK(&bq20z75_device->work, bq20z75_delayed_work);
+ INIT_DELAYED_WORK(&chip->work, sbs_delayed_work);
- bq20z75_device->enable_detection = true;
+ chip->enable_detection = true;
return 0;
exit_psupply:
- if (bq20z75_device->irq)
- free_irq(bq20z75_device->irq, &bq20z75_device->power_supply);
- if (bq20z75_device->gpio_detect)
+ if (chip->irq)
+ free_irq(chip->irq, &chip->power_supply);
+ if (chip->gpio_detect)
gpio_free(pdata->battery_detect);
- kfree(bq20z75_device);
+ kfree(chip);
+
+exit_free_name:
+ kfree(name);
return rc;
}
-static int __devexit bq20z75_remove(struct i2c_client *client)
+static int __devexit sbs_remove(struct i2c_client *client)
{
- struct bq20z75_info *bq20z75_device = i2c_get_clientdata(client);
+ struct sbs_info *chip = i2c_get_clientdata(client);
- if (bq20z75_device->irq)
- free_irq(bq20z75_device->irq, &bq20z75_device->power_supply);
- if (bq20z75_device->gpio_detect)
- gpio_free(bq20z75_device->pdata->battery_detect);
+ if (chip->irq)
+ free_irq(chip->irq, &chip->power_supply);
+ if (chip->gpio_detect)
+ gpio_free(chip->pdata->battery_detect);
- power_supply_unregister(&bq20z75_device->power_supply);
+ power_supply_unregister(&chip->power_supply);
- cancel_delayed_work_sync(&bq20z75_device->work);
+ cancel_delayed_work_sync(&chip->work);
- kfree(bq20z75_device);
- bq20z75_device = NULL;
+ kfree(chip->power_supply.name);
+ kfree(chip);
+ chip = NULL;
return 0;
}
#if defined CONFIG_PM
-static int bq20z75_suspend(struct i2c_client *client,
+static int sbs_suspend(struct i2c_client *client,
pm_message_t state)
{
- struct bq20z75_info *bq20z75_device = i2c_get_clientdata(client);
+ struct sbs_info *chip = i2c_get_clientdata(client);
s32 ret;
- if (bq20z75_device->poll_time > 0)
- cancel_delayed_work_sync(&bq20z75_device->work);
+ if (chip->poll_time > 0)
+ cancel_delayed_work_sync(&chip->work);
/* write to manufacturer access with sleep command */
- ret = bq20z75_write_word_data(client,
- bq20z75_data[REG_MANUFACTURER_DATA].addr,
+ ret = sbs_write_word_data(client, sbs_data[REG_MANUFACTURER_DATA].addr,
MANUFACTURER_ACCESS_SLEEP);
- if (bq20z75_device->is_present && ret < 0)
+ if (chip->is_present && ret < 0)
return ret;
return 0;
}
#else
-#define bq20z75_suspend NULL
+#define sbs_suspend NULL
#endif
-/* any smbus transaction will wake up bq20z75 */
-#define bq20z75_resume NULL
+/* any smbus transaction will wake up sbs */
+#define sbs_resume NULL
-static const struct i2c_device_id bq20z75_id[] = {
+static const struct i2c_device_id sbs_id[] = {
{ "bq20z75", 0 },
+ { "sbs-battery", 1 },
{}
};
-MODULE_DEVICE_TABLE(i2c, bq20z75_id);
-
-static struct i2c_driver bq20z75_battery_driver = {
- .probe = bq20z75_probe,
- .remove = __devexit_p(bq20z75_remove),
- .suspend = bq20z75_suspend,
- .resume = bq20z75_resume,
- .id_table = bq20z75_id,
+MODULE_DEVICE_TABLE(i2c, sbs_id);
+
+static struct i2c_driver sbs_battery_driver = {
+ .probe = sbs_probe,
+ .remove = __devexit_p(sbs_remove),
+ .suspend = sbs_suspend,
+ .resume = sbs_resume,
+ .id_table = sbs_id,
.driver = {
- .name = "bq20z75-battery",
+ .name = "sbs-battery",
+ .of_match_table = sbs_dt_ids,
},
};
-static int __init bq20z75_battery_init(void)
+static int __init sbs_battery_init(void)
{
- return i2c_add_driver(&bq20z75_battery_driver);
+ return i2c_add_driver(&sbs_battery_driver);
}
-module_init(bq20z75_battery_init);
+module_init(sbs_battery_init);
-static void __exit bq20z75_battery_exit(void)
+static void __exit sbs_battery_exit(void)
{
- i2c_del_driver(&bq20z75_battery_driver);
+ i2c_del_driver(&sbs_battery_driver);
}
-module_exit(bq20z75_battery_exit);
+module_exit(sbs_battery_exit);
-MODULE_DESCRIPTION("BQ20z75 battery monitor driver");
+MODULE_DESCRIPTION("SBS battery monitor driver");
MODULE_LICENSE("GPL");
.adc_temp_divider = -1,
};
-static struct {
- int gpio;
- char *name;
- bool output;
- int value;
-} gpios[] = {
- { TOSA_GPIO_CHARGE_OFF, "main charge off", 1, 1 },
- { TOSA_GPIO_CHARGE_OFF_JC, "jacket charge off", 1, 1 },
- { TOSA_GPIO_BAT_SW_ON, "battery switch", 1, 0 },
- { TOSA_GPIO_BAT0_V_ON, "main battery", 1, 0 },
- { TOSA_GPIO_BAT1_V_ON, "jacket battery", 1, 0 },
- { TOSA_GPIO_BAT1_TH_ON, "main battery temp", 1, 0 },
- { TOSA_GPIO_BAT0_TH_ON, "jacket battery temp", 1, 0 },
- { TOSA_GPIO_BU_CHRG_ON, "backup battery", 1, 0 },
- { TOSA_GPIO_BAT0_CRG, "main battery full", 0, 0 },
- { TOSA_GPIO_BAT1_CRG, "jacket battery full", 0, 0 },
- { TOSA_GPIO_BAT0_LOW, "main battery low", 0, 0 },
- { TOSA_GPIO_BAT1_LOW, "jacket battery low", 0, 0 },
- { TOSA_GPIO_JACKET_DETECT, "jacket detect", 0, 0 },
+static struct gpio tosa_bat_gpios[] = {
+ { TOSA_GPIO_CHARGE_OFF, GPIOF_OUT_INIT_HIGH, "main charge off" },
+ { TOSA_GPIO_CHARGE_OFF_JC, GPIOF_OUT_INIT_HIGH, "jacket charge off" },
+ { TOSA_GPIO_BAT_SW_ON, GPIOF_OUT_INIT_LOW, "battery switch" },
+ { TOSA_GPIO_BAT0_V_ON, GPIOF_OUT_INIT_LOW, "main battery" },
+ { TOSA_GPIO_BAT1_V_ON, GPIOF_OUT_INIT_LOW, "jacket battery" },
+ { TOSA_GPIO_BAT1_TH_ON, GPIOF_OUT_INIT_LOW, "main battery temp" },
+ { TOSA_GPIO_BAT0_TH_ON, GPIOF_OUT_INIT_LOW, "jacket battery temp" },
+ { TOSA_GPIO_BU_CHRG_ON, GPIOF_OUT_INIT_LOW, "backup battery" },
+ { TOSA_GPIO_BAT0_CRG, GPIOF_IN, "main battery full" },
+ { TOSA_GPIO_BAT1_CRG, GPIOF_IN, "jacket battery full" },
+ { TOSA_GPIO_BAT0_LOW, GPIOF_IN, "main battery low" },
+ { TOSA_GPIO_BAT1_LOW, GPIOF_IN, "jacket battery low" },
+ { TOSA_GPIO_JACKET_DETECT, GPIOF_IN, "jacket detect" },
};
#ifdef CONFIG_PM
static int __devinit tosa_bat_probe(struct platform_device *dev)
{
int ret;
- int i;
if (!machine_is_tosa())
return -ENODEV;
- for (i = 0; i < ARRAY_SIZE(gpios); i++) {
- ret = gpio_request(gpios[i].gpio, gpios[i].name);
- if (ret) {
- i--;
- goto err_gpio;
- }
-
- if (gpios[i].output)
- ret = gpio_direction_output(gpios[i].gpio,
- gpios[i].value);
- else
- ret = gpio_direction_input(gpios[i].gpio);
-
- if (ret)
- goto err_gpio;
- }
+ ret = gpio_request_array(tosa_bat_gpios, ARRAY_SIZE(tosa_bat_gpios));
+ if (ret)
+ return ret;
mutex_init(&tosa_bat_main.work_lock);
mutex_init(&tosa_bat_jacket.work_lock);
/* see comment in tosa_bat_remove */
cancel_work_sync(&bat_work);
- i--;
-err_gpio:
- for (; i >= 0; i--)
- gpio_free(gpios[i].gpio);
-
+ gpio_free_array(tosa_bat_gpios, ARRAY_SIZE(tosa_bat_gpios));
return ret;
}
static int __devexit tosa_bat_remove(struct platform_device *dev)
{
- int i;
-
free_irq(gpio_to_irq(TOSA_GPIO_JACKET_DETECT), &tosa_bat_jacket);
free_irq(gpio_to_irq(TOSA_GPIO_BAT1_CRG), &tosa_bat_jacket);
free_irq(gpio_to_irq(TOSA_GPIO_BAT0_CRG), &tosa_bat_main);
* unregistered now.
*/
cancel_work_sync(&bat_work);
-
- for (i = ARRAY_SIZE(gpios) - 1; i >= 0; i--)
- gpio_free(gpios[i].gpio);
-
+ gpio_free_array(tosa_bat_gpios, ARRAY_SIZE(tosa_bat_gpios));
return 0;
}
.resume = tosa_bat_resume,
};
-static int __init tosa_bat_init(void)
-{
- return platform_driver_register(&tosa_bat_driver);
-}
-
-static void __exit tosa_bat_exit(void)
-{
- platform_driver_unregister(&tosa_bat_driver);
-}
-
-module_init(tosa_bat_init);
-module_exit(tosa_bat_exit);
+module_platform_driver(tosa_bat_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Dmitry Baryshkov");
},
};
-static int __init wm831x_backup_init(void)
-{
- return platform_driver_register(&wm831x_backup_driver);
-}
-module_init(wm831x_backup_init);
-
-static void __exit wm831x_backup_exit(void)
-{
- platform_driver_unregister(&wm831x_backup_driver);
-}
-module_exit(wm831x_backup_exit);
+module_platform_driver(wm831x_backup_driver);
MODULE_DESCRIPTION("Backup battery charger driver for WM831x PMICs");
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
char wall_name[20];
char usb_name[20];
char battery_name[20];
+ bool have_battery;
};
static int wm831x_power_check_online(struct wm831x *wm831x, int supply,
/* The battery charger is autonomous so we don't need to do
* anything except kick user space */
- power_supply_changed(&wm831x_power->battery);
+ if (wm831x_power->have_battery)
+ power_supply_changed(&wm831x_power->battery);
return IRQ_HANDLED;
}
dev_dbg(wm831x->dev, "Power source changed\n");
/* Just notify for everything - little harm in overnotifying. */
- power_supply_changed(&wm831x_power->battery);
+ if (wm831x_power->have_battery)
+ power_supply_changed(&wm831x_power->battery);
power_supply_changed(&wm831x_power->usb);
power_supply_changed(&wm831x_power->wall);
if (ret)
goto err_kmalloc;
- battery->name = power->battery_name;
- battery->properties = wm831x_bat_props;
- battery->num_properties = ARRAY_SIZE(wm831x_bat_props);
- battery->get_property = wm831x_bat_get_prop;
- battery->use_for_apm = 1;
- ret = power_supply_register(&pdev->dev, battery);
- if (ret)
- goto err_wall;
-
usb->name = power->usb_name,
usb->type = POWER_SUPPLY_TYPE_USB;
usb->properties = wm831x_usb_props;
usb->get_property = wm831x_usb_get_prop;
ret = power_supply_register(&pdev->dev, usb);
if (ret)
- goto err_battery;
+ goto err_wall;
+
+ ret = wm831x_reg_read(wm831x, WM831X_CHARGER_CONTROL_1);
+ if (ret < 0)
+ goto err_wall;
+ power->have_battery = ret & WM831X_CHG_ENA;
+
+ if (power->have_battery) {
+ battery->name = power->battery_name;
+ battery->properties = wm831x_bat_props;
+ battery->num_properties = ARRAY_SIZE(wm831x_bat_props);
+ battery->get_property = wm831x_bat_get_prop;
+ battery->use_for_apm = 1;
+ ret = power_supply_register(&pdev->dev, battery);
+ if (ret)
+ goto err_usb;
+ }
irq = platform_get_irq_byname(pdev, "SYSLO");
ret = request_threaded_irq(irq, NULL, wm831x_syslo_irq,
if (ret != 0) {
dev_err(&pdev->dev, "Failed to request SYSLO IRQ %d: %d\n",
irq, ret);
- goto err_usb;
+ goto err_battery;
}
irq = platform_get_irq_byname(pdev, "PWR SRC");
err_syslo:
irq = platform_get_irq_byname(pdev, "SYSLO");
free_irq(irq, power);
+err_battery:
+ if (power->have_battery)
+ power_supply_unregister(battery);
err_usb:
power_supply_unregister(usb);
-err_battery:
- power_supply_unregister(battery);
err_wall:
power_supply_unregister(wall);
err_kmalloc:
irq = platform_get_irq_byname(pdev, "SYSLO");
free_irq(irq, wm831x_power);
- power_supply_unregister(&wm831x_power->battery);
+ if (wm831x_power->have_battery)
+ power_supply_unregister(&wm831x_power->battery);
power_supply_unregister(&wm831x_power->wall);
power_supply_unregister(&wm831x_power->usb);
kfree(wm831x_power);
},
};
-static int __init wm831x_power_init(void)
-{
- return platform_driver_register(&wm831x_power_driver);
-}
-module_init(wm831x_power_init);
-
-static void __exit wm831x_power_exit(void)
-{
- platform_driver_unregister(&wm831x_power_driver);
-}
-module_exit(wm831x_power_exit);
+module_platform_driver(wm831x_power_driver);
MODULE_DESCRIPTION("Power supply driver for WM831x PMICs");
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
},
};
-static int __init wm8350_power_init(void)
-{
- return platform_driver_register(&wm8350_power_driver);
-}
-module_init(wm8350_power_init);
-
-static void __exit wm8350_power_exit(void)
-{
- platform_driver_unregister(&wm8350_power_driver);
-}
-module_exit(wm8350_power_exit);
+module_platform_driver(wm8350_power_driver);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Power supply driver for WM8350");
#include <linux/irq.h>
#include <linux/slab.h>
-static DEFINE_MUTEX(bat_lock);
static struct work_struct bat_work;
-static struct mutex work_lock;
+static DEFINE_MUTEX(work_lock);
static int bat_status = POWER_SUPPLY_STATUS_UNKNOWN;
static enum power_supply_property *prop;
if (dev->id != -1)
return -EINVAL;
- mutex_init(&work_lock);
-
if (!pdata) {
dev_err(&dev->dev, "No platform_data supplied\n");
return -EINVAL;
if (ret)
goto err2;
ret = request_irq(gpio_to_irq(pdata->charge_gpio),
- wm97xx_chrg_irq, IRQF_DISABLED,
+ wm97xx_chrg_irq, 0,
"AC Detect", dev);
if (ret)
goto err2;
.remove = __devexit_p(wm97xx_bat_remove),
};
-static int __init wm97xx_bat_init(void)
-{
- return platform_driver_register(&wm97xx_bat_driver);
-}
-
-static void __exit wm97xx_bat_exit(void)
-{
- platform_driver_unregister(&wm97xx_bat_driver);
-}
-
-module_init(wm97xx_bat_init);
-module_exit(wm97xx_bat_exit);
+module_platform_driver(wm97xx_bat_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
irq_set_irq_type(gpio_to_irq(info->charge_gpio),
IRQ_TYPE_EDGE_BOTH);
ret = request_irq(gpio_to_irq(info->charge_gpio),
- z2_charge_switch_irq, IRQF_DISABLED,
+ z2_charge_switch_irq, 0,
"AC Detect", charger);
if (ret)
goto err3;
.pm = Z2_BATTERY_PM_OPS
},
.probe = z2_batt_probe,
- .remove = z2_batt_remove,
+ .remove = __devexit_p(z2_batt_remove),
.id_table = z2_batt_id,
};
--- /dev/null
+/*
+ * Copyright (C) 2011 National Semiconductor
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _LP8727_H
+#define _LP8727_H
+
+enum lp8727_eoc_level {
+ EOC_5P,
+ EOC_10P,
+ EOC_16P,
+ EOC_20P,
+ EOC_25P,
+ EOC_33P,
+ EOC_50P,
+};
+
+enum lp8727_ichg {
+ ICHG_90mA,
+ ICHG_100mA,
+ ICHG_400mA,
+ ICHG_450mA,
+ ICHG_500mA,
+ ICHG_600mA,
+ ICHG_700mA,
+ ICHG_800mA,
+ ICHG_900mA,
+ ICHG_1000mA,
+};
+
+struct lp8727_chg_param {
+ /* end of charge level setting */
+ enum lp8727_eoc_level eoc_level;
+ /* charging current */
+ enum lp8727_ichg ichg;
+};
+
+struct lp8727_platform_data {
+ u8 (*get_batt_present)(void);
+ u16 (*get_batt_level)(void);
+ u8 (*get_batt_capacity)(void);
+ u8 (*get_batt_temp)(void);
+ struct lp8727_chg_param ac;
+ struct lp8727_chg_param usb;
+};
+
+#endif
MAX8925_IRQ_VCHG_DC_OVP,
MAX8925_IRQ_VCHG_DC_F,
MAX8925_IRQ_VCHG_DC_R,
- MAX8925_IRQ_VCHG_USB_OVP,
- MAX8925_IRQ_VCHG_USB_F,
- MAX8925_IRQ_VCHG_USB_R,
MAX8925_IRQ_VCHG_THM_OK_R,
MAX8925_IRQ_VCHG_THM_OK_F,
MAX8925_IRQ_VCHG_SYSLOW_F,
unsigned batt_detect:1;
unsigned topoff_threshold:2;
unsigned fast_charge:3; /* charge current */
+ unsigned no_temp_support:1; /* set if no temperature detect */
+ unsigned no_insert_detect:1; /* set if no ac insert detect */
+ char **supplied_to;
+ int num_supplicants;
};
/*
unsigned int polling_interval; /* msecs, default is 2000 */
unsigned long ac_max_uA; /* current to draw when on AC */
+
+ bool use_otg_notifier;
};
#endif /* __PDA_POWER_H__ */
--- /dev/null
+/*
+ * Copyright (C) 2011 Samsung Electronics Co., Ltd.
+ * MyungJoo.Ham <myungjoo.ham@samsung.com>
+ *
+ * Charger Manager.
+ * This framework enables to control and multiple chargers and to
+ * monitor charging even in the context of suspend-to-RAM with
+ * an interface combining the chargers.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+**/
+
+#ifndef _CHARGER_MANAGER_H
+#define _CHARGER_MANAGER_H
+
+#include <linux/power_supply.h>
+
+enum data_source {
+ CM_FUEL_GAUGE,
+ CM_CHARGER_STAT,
+};
+
+enum polling_modes {
+ CM_POLL_DISABLE = 0,
+ CM_POLL_ALWAYS,
+ CM_POLL_EXTERNAL_POWER_ONLY,
+ CM_POLL_CHARGING_ONLY,
+};
+
+/**
+ * struct charger_global_desc
+ * @rtc_name: the name of RTC used to wake up the system from suspend.
+ * @rtc_only_wakeup:
+ * If the system is woken up by waekup-sources other than the RTC or
+ * callbacks, Charger Manager should recognize with
+ * rtc_only_wakeup() returning false.
+ * If the RTC given to CM is the only wakeup reason,
+ * rtc_only_wakeup should return true.
+ */
+struct charger_global_desc {
+ char *rtc_name;
+
+ bool (*rtc_only_wakeup)(void);
+};
+
+/**
+ * struct charger_desc
+ * @psy_name: the name of power-supply-class for charger manager
+ * @polling_mode:
+ * Determine which polling mode will be used
+ * @fullbatt_uV: voltage in microvolt
+ * If it is not being charged and VBATT >= fullbatt_uV,
+ * it is assumed to be full.
+ * @polling_interval_ms: interval in millisecond at which
+ * charger manager will monitor battery health
+ * @battery_present:
+ * Specify where information for existance of battery can be obtained
+ * @psy_charger_stat: the names of power-supply for chargers
+ * @num_charger_regulator: the number of entries in charger_regulators
+ * @charger_regulators: array of regulator_bulk_data for chargers
+ * @psy_fuel_gauge: the name of power-supply for fuel gauge
+ * @temperature_out_of_range:
+ * Determine whether the status is overheat or cold or normal.
+ * return_value > 0: overheat
+ * return_value == 0: normal
+ * return_value < 0: cold
+ * @measure_battery_temp:
+ * true: measure battery temperature
+ * false: measure ambient temperature
+ */
+struct charger_desc {
+ char *psy_name;
+
+ enum polling_modes polling_mode;
+ unsigned int polling_interval_ms;
+
+ unsigned int fullbatt_uV;
+
+ enum data_source battery_present;
+
+ char **psy_charger_stat;
+
+ int num_charger_regulators;
+ struct regulator_bulk_data *charger_regulators;
+
+ char *psy_fuel_gauge;
+
+ int (*temperature_out_of_range)(int *mC);
+ bool measure_battery_temp;
+};
+
+#define PSY_NAME_MAX 30
+
+/**
+ * struct charger_manager
+ * @entry: entry for list
+ * @dev: device pointer
+ * @desc: instance of charger_desc
+ * @fuel_gauge: power_supply for fuel gauge
+ * @charger_stat: array of power_supply for chargers
+ * @charger_enabled: the state of charger
+ * @emergency_stop:
+ * When setting true, stop charging
+ * @last_temp_mC: the measured temperature in milli-Celsius
+ * @psy_name_buf: the name of power-supply-class for charger manager
+ * @charger_psy: power_supply for charger manager
+ * @status_save_ext_pwr_inserted:
+ * saved status of external power before entering suspend-to-RAM
+ * @status_save_batt:
+ * saved status of battery before entering suspend-to-RAM
+ */
+struct charger_manager {
+ struct list_head entry;
+ struct device *dev;
+ struct charger_desc *desc;
+
+ struct power_supply *fuel_gauge;
+ struct power_supply **charger_stat;
+
+ bool charger_enabled;
+
+ int emergency_stop;
+ int last_temp_mC;
+
+ char psy_name_buf[PSY_NAME_MAX + 1];
+ struct power_supply charger_psy;
+
+ bool status_save_ext_pwr_inserted;
+ bool status_save_batt;
+};
+
+#ifdef CONFIG_CHARGER_MANAGER
+extern int setup_charger_manager(struct charger_global_desc *gd);
+extern bool cm_suspend_again(void);
+#else
+static void __maybe_unused setup_charger_manager(struct charger_global_desc *gd)
+{ }
+
+static bool __maybe_unused cm_suspend_again(void)
+{
+ return false;
+}
+#endif
+
+#endif /* _CHARGER_MANAGER_H */
/*
- * Gas Gauge driver for TI's BQ20Z75
+ * Gas Gauge driver for SBS Compliant Gas Gauges
*
* Copyright (c) 2010, NVIDIA Corporation.
*
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
-#ifndef __LINUX_POWER_BQ20Z75_H_
-#define __LINUX_POWER_BQ20Z75_H_
+#ifndef __LINUX_POWER_SBS_BATTERY_H_
+#define __LINUX_POWER_SBS_BATTERY_H_
#include <linux/power_supply.h>
#include <linux/types.h>
/**
- * struct bq20z75_platform_data - platform data for bq20z75 devices
+ * struct sbs_platform_data - platform data for sbs devices
* @battery_detect: GPIO which is used to detect battery presence
* @battery_detect_present: gpio state when battery is present (0 / 1)
* @i2c_retry_count: # of times to retry on i2c IO failure
* @poll_retry_count: # of times to retry looking for new status after
* external change notification
*/
-struct bq20z75_platform_data {
+struct sbs_platform_data {
int battery_detect;
int battery_detect_present;
int i2c_retry_count;
POWER_SUPPLY_CAPACITY_LEVEL_FULL,
};
+enum {
+ POWER_SUPPLY_SCOPE_UNKNOWN = 0,
+ POWER_SUPPLY_SCOPE_SYSTEM,
+ POWER_SUPPLY_SCOPE_DEVICE,
+};
+
enum power_supply_property {
/* Properties of type `int' */
POWER_SUPPLY_PROP_STATUS = 0,
POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
POWER_SUPPLY_PROP_TIME_TO_FULL_AVG,
POWER_SUPPLY_PROP_TYPE, /* use power_supply.type instead */
+ POWER_SUPPLY_PROP_SCOPE,
/* Properties of type `const char *' */
POWER_SUPPLY_PROP_MODEL_NAME,
POWER_SUPPLY_PROP_MANUFACTURER,
};
enum power_supply_type {
- POWER_SUPPLY_TYPE_BATTERY = 0,
+ POWER_SUPPLY_TYPE_UNKNOWN = 0,
+ POWER_SUPPLY_TYPE_BATTERY,
POWER_SUPPLY_TYPE_UPS,
POWER_SUPPLY_TYPE_MAINS,
POWER_SUPPLY_TYPE_USB, /* Standard Downstream Port */
extern int power_supply_register(struct device *parent,
struct power_supply *psy);
extern void power_supply_unregister(struct power_supply *psy);
+extern int power_supply_powers(struct power_supply *psy, struct device *dev);
/* For APM emulation, think legacy userspace. */
extern struct class *power_supply_class;
const unsigned int current_channel;
const unsigned int backup_volt_channel;
+ const unsigned int volt_samples;
+ const unsigned int current_samples;
+ const unsigned int backup_volt_samples;
+
const unsigned int volt_mult;
const unsigned int current_mult;
const unsigned int backup_volt_mult;
projects / platform / adaptation / renesas_rcar / renesas_kernel.git / commitdiff