diff options
30 files changed, 2445 insertions, 305 deletions
diff --git a/Documentation/devicetree/bindings/power_supply/olpc_battery.txt b/Documentation/devicetree/bindings/power_supply/olpc_battery.txt new file mode 100644 index 000000000000..c8901b3992d9 --- /dev/null +++ b/Documentation/devicetree/bindings/power_supply/olpc_battery.txt @@ -0,0 +1,5 @@ +OLPC battery +~~~~~~~~~~~~ + +Required properties: + - compatible : "olpc,xo1-battery" diff --git a/Documentation/devicetree/bindings/power_supply/ti_bq20z75.txt b/Documentation/devicetree/bindings/power_supply/ti_bq20z75.txt new file mode 100644 index 000000000000..7571294f4110 --- /dev/null +++ b/Documentation/devicetree/bindings/power_supply/ti_bq20z75.txt @@ -0,0 +1,23 @@ +TI bq20z75 +~~~~~~~~~~ + +Required properties : + - compatible : "ti,bq20z75" + +Optional properties : + - ti,i2c-retry-count : The number of times to retry i2c transactions on i2c + IO failure. + - ti,poll-retry-count : The number of times to try looking for new status + after an external change notification. + - ti,battery-detect-gpios : The gpio which signals battery detection and + a flag specifying its polarity. + +Example: + + bq20z75@b { + compatible = "ti,bq20z75"; + reg = < 0xb >; + ti,i2c-retry-count = <2>; + ti,poll-retry-count = <10>; + ti,battery-detect-gpios = <&gpio-controller 122 1>; + } diff --git a/Documentation/power/charger-manager.txt b/Documentation/power/charger-manager.txt new file mode 100644 index 000000000000..fdcca991df30 --- /dev/null +++ b/Documentation/power/charger-manager.txt @@ -0,0 +1,163 @@ +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. diff --git a/drivers/mfd/max8925-core.c b/drivers/mfd/max8925-core.c index e1e59c92f758..ca881efedf75 100644 --- a/drivers/mfd/max8925-core.c +++ b/drivers/mfd/max8925-core.c @@ -210,21 +210,6 @@ static struct max8925_irq_data max8925_irqs[] = { .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, diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig index 9f88641e67f9..3bd2ed86fea2 100644 --- a/drivers/power/Kconfig +++ b/drivers/power/Kconfig @@ -226,6 +226,12 @@ config CHARGER_TWL4030 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 @@ -236,6 +242,16 @@ config CHARGER_GPIO 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 diff --git a/drivers/power/Makefile b/drivers/power/Makefile index b4af13dd8b66..9a78b1dd570b 100644 --- a/drivers/power/Makefile +++ b/drivers/power/Makefile @@ -35,6 +35,8 @@ obj-$(CONFIG_BATTERY_INTEL_MID) += intel_mid_battery.o obj-$(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 diff --git a/drivers/power/bq20z75.c b/drivers/power/bq20z75.c index 9c5e5beda3a8..ce95ff791016 100644 --- a/drivers/power/bq20z75.c +++ b/drivers/power/bq20z75.c @@ -613,6 +613,80 @@ static void bq20z75_delayed_work(struct work_struct *work) } } +#if defined(CONFIG_OF) + +#include <linux/of_device.h> +#include <linux/of_gpio.h> + +static const struct of_device_id bq20z75_dt_ids[] = { + { .compatible = "ti,bq20z75" }, + { } +}; +MODULE_DEVICE_TABLE(i2c, bq20z75_dt_ids); + +static struct bq20z75_platform_data *bq20z75_of_populate_pdata( + struct i2c_client *client) +{ + struct device_node *of_node = client->dev.of_node; + struct bq20z75_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, "ti,i2c-retry-count", NULL) && + !of_get_property(of_node, "ti,poll-retry-count", NULL) && + !of_get_property(of_node, "ti,battery-detect-gpios", NULL)) + goto of_out; + + pdata = devm_kzalloc(&client->dev, sizeof(struct bq20z75_platform_data), + GFP_KERNEL); + if (!pdata) + goto of_out; + + rc = of_property_read_u32(of_node, "ti,i2c-retry-count", &prop); + if (!rc) + pdata->i2c_retry_count = prop; + + rc = of_property_read_u32(of_node, "ti,poll-retry-count", &prop); + if (!rc) + pdata->poll_retry_count = prop; + + if (!of_get_property(of_node, "ti,battery-detect-gpios", NULL)) { + pdata->battery_detect = -1; + goto of_out; + } + + pdata->battery_detect = of_get_named_gpio_flags(of_node, + "ti,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 bq20z75_dt_ids NULL +static struct bq20z75_platform_data *bq20z75_of_populate_pdata( + struct i2c_client *client) +{ + return client->dev.platform_data; +} +#endif + static int __devinit bq20z75_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -642,6 +716,8 @@ static int __devinit bq20z75_probe(struct i2c_client *client, bq20z75_device->power_supply.external_power_changed = bq20z75_external_power_changed; + pdata = bq20z75_of_populate_pdata(client); + if (pdata) { bq20z75_device->gpio_detect = gpio_is_valid(pdata->battery_detect); @@ -775,6 +851,7 @@ static struct i2c_driver bq20z75_battery_driver = { .id_table = bq20z75_id, .driver = { .name = "bq20z75-battery", + .of_match_table = bq20z75_dt_ids, }, }; diff --git a/drivers/power/bq27x00_battery.c b/drivers/power/bq27x00_battery.c index bb16f5b7e167..98bf5676318d 100644 --- a/drivers/power/bq27x00_battery.c +++ b/drivers/power/bq27x00_battery.c @@ -54,13 +54,19 @@ #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 */ @@ -79,9 +85,8 @@ struct bq27x00_reg_cache { int charge_full; int cycle_count; int capacity; + int energy; int flags; - - int current_now; }; struct bq27x00_device_info { @@ -108,6 +113,7 @@ static enum power_supply_property bq27x00_battery_props[] = { 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, @@ -149,7 +155,7 @@ static int bq27x00_battery_read_rsoc(struct bq27x00_device_info *di) 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; } @@ -164,7 +170,8 @@ static int bq27x00_battery_read_charge(struct bq27x00_device_info *di, u8 reg) 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; } @@ -208,7 +215,7 @@ static int bq27x00_battery_read_ilmd(struct bq27x00_device_info *di) 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; } @@ -221,6 +228,50 @@ static int bq27x00_battery_read_ilmd(struct bq27x00_device_info *di) } /* + * 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. */ @@ -245,7 +296,8 @@ static int bq27x00_battery_read_time(struct bq27x00_device_info *di, u8 reg) 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; } @@ -262,25 +314,31 @@ static void bq27x00_update(struct bq27x00_device_info *di) 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); } @@ -302,25 +360,6 @@ static void bq27x00_battery_poll(struct work_struct *work) } } - -/* - * 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 @@ -330,20 +369,20 @@ static int bq27x00_battery_current(struct bq27x00_device_info *di, 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; } @@ -362,10 +401,14 @@ static int bq27x00_battery_status(struct bq27x00_device_info *di, 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; @@ -382,50 +425,56 @@ static int bq27x00_battery_status(struct bq27x00_device_info *di, 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) { @@ -473,8 +522,11 @@ static int bq27x00_battery_get_property(struct power_supply *psy, 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); @@ -501,7 +553,7 @@ static int bq27x00_battery_get_property(struct power_supply *psy, 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; @@ -546,6 +598,14 @@ static int bq27x00_powersupply_init(struct bq27x00_device_info *di) 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); diff --git a/drivers/power/charger-manager.c b/drivers/power/charger-manager.c new file mode 100644 index 000000000000..0378d019efae --- /dev/null +++ b/drivers/power/charger-manager.c @@ -0,0 +1,1072 @@ +/* + * 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"); diff --git a/drivers/power/collie_battery.c b/drivers/power/collie_battery.c index 548d263b1ad0..1b4c17b527c1 100644 --- a/drivers/power/collie_battery.c +++ b/drivers/power/collie_battery.c @@ -277,18 +277,13 @@ static struct collie_bat collie_bat_bu = { .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 @@ -313,29 +308,16 @@ static int collie_bat_resume(struct ucb1x00_dev *dev) 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); @@ -363,19 +345,12 @@ err_psy_reg_main: /* 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); @@ -387,9 +362,7 @@ static void __devexit collie_bat_remove(struct ucb1x00_dev *dev) * 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 = { diff --git a/drivers/power/ds2760_battery.c b/drivers/power/ds2760_battery.c index f2c9cc33c0f9..cda03dae75f4 100644 --- a/drivers/power/ds2760_battery.c +++ b/drivers/power/ds2760_battery.c @@ -95,7 +95,11 @@ static int rated_capacities[] = { 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 diff --git a/drivers/power/ds2780_battery.c b/drivers/power/ds2780_battery.c index 91a783d72360..887ec98d8c22 100644 --- a/drivers/power/ds2780_battery.c +++ b/drivers/power/ds2780_battery.c @@ -848,7 +848,7 @@ static struct platform_driver ds2780_battery_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) diff --git a/drivers/power/intel_mid_battery.c b/drivers/power/intel_mid_battery.c index cffcb7c00b00..01fa671ec97f 100644 --- a/drivers/power/intel_mid_battery.c +++ b/drivers/power/intel_mid_battery.c @@ -61,7 +61,8 @@ MODULE_PARM_DESC(debug, "Flag to enable PMIC Battery debug messages."); #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 @@ -304,11 +305,6 @@ static void pmic_battery_read_status(struct pmic_power_module_info *pbi) 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; @@ -316,6 +312,10 @@ static void pmic_battery_read_status(struct pmic_power_module_info *pbi) 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); + } } } diff --git a/drivers/power/lp8727_charger.c b/drivers/power/lp8727_charger.c new file mode 100644 index 000000000000..b15b575c070c --- /dev/null +++ b/drivers/power/lp8727_charger.c @@ -0,0 +1,494 @@ +/* + * 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"); diff --git a/drivers/power/max17042_battery.c b/drivers/power/max17042_battery.c index 9f0183c73076..86acee2f9889 100644 --- a/drivers/power/max17042_battery.c +++ b/drivers/power/max17042_battery.c @@ -85,55 +85,79 @@ static int max17042_get_property(struct power_supply *psy, { 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; @@ -145,24 +169,30 @@ static int max17042_get_property(struct power_supply *psy, 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; @@ -210,6 +240,9 @@ static int __devinit max17042_probe(struct i2c_client *client, 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"); @@ -226,9 +259,6 @@ static int __devinit max17042_probe(struct i2c_client *client, 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; diff --git a/drivers/power/max8903_charger.c b/drivers/power/max8903_charger.c index 2595145f3bff..f204ad16361a 100644 --- a/drivers/power/max8903_charger.c +++ b/drivers/power/max8903_charger.c @@ -389,4 +389,4 @@ module_exit(max8903_exit); 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"); diff --git a/drivers/power/max8925_power.c b/drivers/power/max8925_power.c index a70e16d3a3dc..815525094ff9 100644 --- a/drivers/power/max8925_power.c +++ b/drivers/power/max8925_power.c @@ -78,6 +78,8 @@ struct max8925_power_info { 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); }; @@ -116,17 +118,7 @@ static irqreturn_t max8925_charger_handler(int irq, void *data) 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 */ @@ -168,27 +160,33 @@ static irqreturn_t max8925_charger_handler(int irq, void *data) 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; } @@ -208,7 +206,7 @@ static int max8925_ac_get_prop(struct power_supply *psy, 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; } } @@ -242,7 +240,7 @@ static int max8925_usb_get_prop(struct power_supply *psy, 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; } } @@ -266,7 +264,6 @@ static int max8925_bat_get_prop(struct power_supply *psy, 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) { @@ -277,7 +274,7 @@ static int max8925_bat_get_prop(struct power_supply *psy, 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; } @@ -288,8 +285,8 @@ static int max8925_bat_get_prop(struct power_supply *psy, 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 */ @@ -365,13 +362,14 @@ static __devinit int max8925_init_charger(struct max8925_chip *chip, 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"); @@ -379,9 +377,15 @@ static __devinit int max8925_init_charger(struct max8925_chip *chip, 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) { /* @@ -449,6 +453,8 @@ static __devinit int max8925_power_probe(struct platform_device *pdev) 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; @@ -459,6 +465,9 @@ static __devinit int max8925_power_probe(struct platform_device *pdev) 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; @@ -478,6 +487,8 @@ static __devinit int max8925_power_probe(struct platform_device *pdev) 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; diff --git a/drivers/power/max8997_charger.c b/drivers/power/max8997_charger.c index a23317d75c5a..23ca65d17705 100644 --- a/drivers/power/max8997_charger.c +++ b/drivers/power/max8997_charger.c @@ -98,7 +98,7 @@ static __devinit int max8997_battery_probe(struct platform_device *pdev) 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) @@ -179,6 +179,7 @@ static int __devexit max8997_battery_remove(struct platform_device *pdev) static const struct platform_device_id max8997_battery_id[] = { { "max8997-battery", 0 }, + { } }; static struct platform_driver max8997_battery_driver = { diff --git a/drivers/power/max8998_charger.c b/drivers/power/max8998_charger.c index 93e3bb47a3a8..0737302af1d2 100644 --- a/drivers/power/max8998_charger.c +++ b/drivers/power/max8998_charger.c @@ -154,6 +154,7 @@ static __devinit int max8998_battery_probe(struct platform_device *pdev) 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; @@ -190,6 +191,7 @@ static int __devexit max8998_battery_remove(struct platform_device *pdev) static const struct platform_device_id max8998_battery_id[] = { { "max8998-battery", TYPE_MAX8998 }, + { } }; static struct platform_driver max8998_battery_driver = { diff --git a/drivers/power/olpc_battery.c b/drivers/power/olpc_battery.c index 0b0ff3a936a6..21e7c06724bf 100644 --- a/drivers/power/olpc_battery.c +++ b/drivers/power/olpc_battery.c @@ -519,29 +519,35 @@ static struct device_attribute olpc_bat_error = { * 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. @@ -558,15 +564,10 @@ static int __init olpc_bat_init(void) /* 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); @@ -575,7 +576,7 @@ static int __init olpc_bat_init(void) 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; @@ -587,7 +588,12 @@ static int __init olpc_bat_init(void) 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); @@ -595,22 +601,45 @@ eeprom_failed: 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; } +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, +}; + +static int __init olpc_bat_init(void) +{ + return platform_driver_register(&olpc_battery_driver); +} module_init(olpc_bat_init); + +static void __exit olpc_bat_exit(void) +{ + platform_driver_unregister(&olpc_battery_driver); +} module_exit(olpc_bat_exit); MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>"); diff --git a/drivers/power/pda_power.c b/drivers/power/pda_power.c index 69f8aa3a6a4b..87be6795605a 100644 --- a/drivers/power/pda_power.c +++ b/drivers/power/pda_power.c @@ -14,6 +14,7 @@ #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> @@ -40,7 +41,9 @@ static int polling; #ifdef CONFIG_USB_OTG_UTILS static struct otg_transceiver *transceiver; +static struct notifier_block otg_nb; #endif + static struct regulator *ac_draw; enum { @@ -222,7 +225,42 @@ static void polling_timer_func(unsigned long unused) #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 @@ -282,6 +320,16 @@ static int pda_power_probe(struct platform_device *pdev) 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) { @@ -303,13 +351,6 @@ static int pda_power_probe(struct platform_device *pdev) } } -#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) { @@ -331,6 +372,18 @@ static int pda_power_probe(struct platform_device *pdev) } } +#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); @@ -343,6 +396,11 @@ static int pda_power_probe(struct platform_device *pdev) 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); diff --git a/drivers/power/power_supply_sysfs.c b/drivers/power/power_supply_sysfs.c index 21178ebfe51a..5faf7ae9b81f 100644 --- a/drivers/power/power_supply_sysfs.c +++ b/drivers/power/power_supply_sysfs.c @@ -43,7 +43,7 @@ static ssize_t power_supply_show_property(struct device *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[] = { @@ -81,8 +81,8 @@ static ssize_t power_supply_show_property(struct device *dev, 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; } diff --git a/drivers/power/tosa_battery.c b/drivers/power/tosa_battery.c index 53f0d3524fcd..ada86a4f50e2 100644 --- a/drivers/power/tosa_battery.c +++ b/drivers/power/tosa_battery.c @@ -307,25 +307,20 @@ static struct tosa_bat tosa_bat_bu = { .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 @@ -350,27 +345,13 @@ static int tosa_bat_resume(struct platform_device *dev) 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); @@ -424,18 +405,12 @@ err_psy_reg_main: /* 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); @@ -450,10 +425,7 @@ static int __devexit tosa_bat_remove(struct platform_device *dev) * 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; } diff --git a/drivers/power/wm831x_power.c b/drivers/power/wm831x_power.c index 6cc2ca6427f3..c32e6f83c7a8 100644 --- a/drivers/power/wm831x_power.c +++ b/drivers/power/wm831x_power.c @@ -27,6 +27,7 @@ struct wm831x_power { 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, @@ -449,7 +450,8 @@ static irqreturn_t wm831x_bat_irq(int irq, void *data) /* 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; } @@ -479,7 +481,8 @@ static irqreturn_t wm831x_pwr_src_irq(int irq, void *data) 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); @@ -537,15 +540,6 @@ static __devinit int wm831x_power_probe(struct platform_device *pdev) 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; @@ -553,7 +547,23 @@ static __devinit int wm831x_power_probe(struct platform_device *pdev) 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, @@ -562,7 +572,7 @@ static __devinit int wm831x_power_probe(struct platform_device *pdev) 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"); @@ -601,10 +611,11 @@ err_bat_irq: 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: @@ -628,7 +639,8 @@ static __devexit int wm831x_power_remove(struct platform_device *pdev) 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); diff --git a/drivers/power/wm97xx_battery.c b/drivers/power/wm97xx_battery.c index 156559e56fa5..cf8681c1f8eb 100644 --- a/drivers/power/wm97xx_battery.c +++ b/drivers/power/wm97xx_battery.c @@ -196,7 +196,7 @@ static int __devinit wm97xx_bat_probe(struct platform_device *dev) 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; diff --git a/drivers/power/z2_battery.c b/drivers/power/z2_battery.c index d119c38b3ff6..636ebb2a0e80 100644 --- a/drivers/power/z2_battery.c +++ b/drivers/power/z2_battery.c @@ -218,7 +218,7 @@ static int __devinit z2_batt_probe(struct i2c_client *client, 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; @@ -313,7 +313,7 @@ static struct i2c_driver z2_batt_driver = { .pm = Z2_BATTERY_PM_OPS }, .probe = z2_batt_probe, - .remove = z2_batt_remove, + .remove = __devexit_p(z2_batt_remove), .id_table = z2_batt_id, }; diff --git a/include/linux/mfd/max8925.h b/include/linux/mfd/max8925.h index 5259dfe8c585..b8e6d9449086 100644 --- a/include/linux/mfd/max8925.h +++ b/include/linux/mfd/max8925.h @@ -167,9 +167,6 @@ enum { 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, @@ -223,6 +220,10 @@ struct max8925_power_pdata { 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; }; /* diff --git a/include/linux/pda_power.h b/include/linux/pda_power.h index c9e4d814ff77..2bb62bf296ac 100644 --- a/include/linux/pda_power.h +++ b/include/linux/pda_power.h @@ -35,6 +35,8 @@ struct pda_power_pdata { 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__ */ diff --git a/include/linux/power/charger-manager.h b/include/linux/power/charger-manager.h new file mode 100644 index 000000000000..4f75e531c112 --- /dev/null +++ b/include/linux/power/charger-manager.h @@ -0,0 +1,147 @@ +/* + * 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 */ diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index 2e3c8279b3b0..fa9b962aec12 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -130,7 +130,8 @@ enum power_supply_property { }; 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 */ |