From 4a11b59d8283662193a9c6a9c14c58d1b9bf0617 Mon Sep 17 00:00:00 2001 From: Anton Vorontsov Date: Fri, 4 May 2007 00:27:45 +0400 Subject: [BATTERY] Universal power supply class (was: battery class) This class is result of "external power" and "battery" classes merge, as suggested by David Woodhouse. He also implemented uevent support. Here how userspace seeing it now: # ls /sys/class/power\ supply/ ac main-battery usb # cat /sys/class/power\ supply/ac/type AC # cat /sys/class/power\ supply/usb/type USB # cat /sys/class/power\ supply/main-battery/type Battery # cat /sys/class/power\ supply/ac/online 1 # cat /sys/class/power\ supply/usb/online 0 # cat /sys/class/power\ supply/main-battery/status Charging # cat /sys/class/leds/h5400\:red-left/trigger none h5400-radio timer hwtimer ac-online usb-online main-battery-charging-or-full [main-battery-charging] main-battery-full Signed-off-by: Anton Vorontsov Signed-off-by: David Woodhouse Signed-off-by: Andrew Morton --- include/linux/power_supply.h | 180 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 180 insertions(+) create mode 100644 include/linux/power_supply.h (limited to 'include') diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h new file mode 100644 index 000000000000..606c0957997f --- /dev/null +++ b/include/linux/power_supply.h @@ -0,0 +1,180 @@ +/* + * Universal power supply monitor class + * + * Copyright © 2007 Anton Vorontsov + * Copyright © 2004 Szabolcs Gyurko + * Copyright © 2003 Ian Molton + * + * Modified: 2004, Oct Szabolcs Gyurko + * + * You may use this code as per GPL version 2 + */ + +#ifndef __LINUX_POWER_SUPPLY_H__ +#define __LINUX_POWER_SUPPLY_H__ + +#include +#include +#include + +/* + * All voltages, currents, charges, energies, time and temperatures in uV, + * µA, µAh, µWh, seconds and tenths of degree Celsius unless otherwise + * stated. It's driver's job to convert its raw values to units in which + * this class operates. + */ + +/* + * For systems where the charger determines the maximum battery capacity + * the min and max fields should be used to present these values to user + * space. Unused/unknown fields will not appear in sysfs. + */ + +enum { + POWER_SUPPLY_STATUS_UNKNOWN = 0, + POWER_SUPPLY_STATUS_CHARGING, + POWER_SUPPLY_STATUS_DISCHARGING, + POWER_SUPPLY_STATUS_NOT_CHARGING, + POWER_SUPPLY_STATUS_FULL, +}; + +enum { + POWER_SUPPLY_HEALTH_UNKNOWN = 0, + POWER_SUPPLY_HEALTH_GOOD, + POWER_SUPPLY_HEALTH_OVERHEAT, + POWER_SUPPLY_HEALTH_DEAD, + POWER_SUPPLY_HEALTH_OVERVOLTAGE, + POWER_SUPPLY_HEALTH_UNSPEC_FAILURE, +}; + +enum { + POWER_SUPPLY_TECHNOLOGY_UNKNOWN = 0, + POWER_SUPPLY_TECHNOLOGY_NiMH, + POWER_SUPPLY_TECHNOLOGY_LION, + POWER_SUPPLY_TECHNOLOGY_LIPO, + POWER_SUPPLY_TECHNOLOGY_LiFe, + POWER_SUPPLY_TECHNOLOGY_NiCd, +}; + +enum { + POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN = 0, + POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL, + POWER_SUPPLY_CAPACITY_LEVEL_LOW, + POWER_SUPPLY_CAPACITY_LEVEL_NORMAL, + POWER_SUPPLY_CAPACITY_LEVEL_HIGH, + POWER_SUPPLY_CAPACITY_LEVEL_FULL, +}; + +enum power_supply_property { + /* Properties of type `int' */ + POWER_SUPPLY_PROP_STATUS = 0, + POWER_SUPPLY_PROP_HEALTH, + POWER_SUPPLY_PROP_PRESENT, + POWER_SUPPLY_PROP_ONLINE, + POWER_SUPPLY_PROP_TECHNOLOGY, + POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN, + POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, + POWER_SUPPLY_PROP_VOLTAGE_NOW, + POWER_SUPPLY_PROP_VOLTAGE_AVG, + POWER_SUPPLY_PROP_CURRENT_NOW, + POWER_SUPPLY_PROP_CURRENT_AVG, + POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, + POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN, + POWER_SUPPLY_PROP_CHARGE_FULL, + POWER_SUPPLY_PROP_CHARGE_EMPTY, + POWER_SUPPLY_PROP_CHARGE_NOW, + POWER_SUPPLY_PROP_CHARGE_AVG, + POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN, + POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN, + POWER_SUPPLY_PROP_ENERGY_FULL, + POWER_SUPPLY_PROP_ENERGY_EMPTY, + POWER_SUPPLY_PROP_ENERGY_NOW, + POWER_SUPPLY_PROP_ENERGY_AVG, + POWER_SUPPLY_PROP_CAPACITY, /* in percents! */ + POWER_SUPPLY_PROP_CAPACITY_LEVEL, + POWER_SUPPLY_PROP_TEMP, + POWER_SUPPLY_PROP_TEMP_AMBIENT, + POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, + POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG, + POWER_SUPPLY_PROP_TIME_TO_FULL_NOW, + POWER_SUPPLY_PROP_TIME_TO_FULL_AVG, + /* Properties of type `const char *' */ + POWER_SUPPLY_PROP_MODEL_NAME, + POWER_SUPPLY_PROP_MANUFACTURER, +}; + +enum power_supply_type { + POWER_SUPPLY_TYPE_BATTERY = 0, + POWER_SUPPLY_TYPE_UPS, + POWER_SUPPLY_TYPE_MAINS, + POWER_SUPPLY_TYPE_USB, +}; + +union power_supply_propval { + int intval; + const char *strval; +}; + +struct power_supply { + const char *name; + enum power_supply_type type; + enum power_supply_property *properties; + size_t num_properties; + + char **supplied_to; + size_t num_supplicants; + + int (*get_property)(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val); + void (*external_power_changed)(struct power_supply *psy); + + /* For APM emulation, think legacy userspace. */ + int use_for_apm; + + /* private */ + struct device *dev; + struct work_struct changed_work; + +#ifdef CONFIG_LEDS_TRIGGERS + struct led_trigger *charging_full_trig; + char *charging_full_trig_name; + struct led_trigger *charging_trig; + char *charging_trig_name; + struct led_trigger *full_trig; + char *full_trig_name; + struct led_trigger *online_trig; + char *online_trig_name; +#endif +}; + +/* + * This is recommended structure to specify static power supply parameters. + * Generic one, parametrizable for different power supplies. Power supply + * class itself does not use it, but that's what implementing most platform + * drivers, should try reuse for consistency. + */ + +struct power_supply_info { + const char *name; + int technology; + int voltage_max_design; + int voltage_min_design; + int charge_full_design; + int charge_empty_design; + int energy_full_design; + int energy_empty_design; + int use_for_apm; +}; + +extern void power_supply_changed(struct power_supply *psy); +extern int power_supply_am_i_supplied(struct power_supply *psy); + +extern int power_supply_register(struct device *parent, + struct power_supply *psy); +extern void power_supply_unregister(struct power_supply *psy); + +/* For APM emulation, think legacy userspace. */ +extern struct class *power_supply_class; + +#endif /* __LINUX_POWER_SUPPLY_H__ */ -- cgit v1.2.3 From b2998049cfae4f4a81c4bb048814d34912017bb9 Mon Sep 17 00:00:00 2001 From: Anton Vorontsov Date: Fri, 4 May 2007 00:32:17 +0400 Subject: [BATTERY] pda_power platform driver Common power driver for PDAs and phones with one or two external power supplies (AC/USB) connected to main and backup batteries, and optional builtin charger. It's used to stop logic duplication through different embedded devices. So, power supply *logic* is here. pda_power register power supplies, and will take care about notifying batteries about power changes through external power interface. Currently, power consumption legal limits (including USB power consumption) should be handled by platform code, inside set_charge function. Signed-off-by: Anton Vorontsov Signed-off-by: Roman Moravcik Signed-off-by: David Woodhouse --- include/linux/pda_power.h | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 include/linux/pda_power.h (limited to 'include') diff --git a/include/linux/pda_power.h b/include/linux/pda_power.h new file mode 100644 index 000000000000..1375f15797e7 --- /dev/null +++ b/include/linux/pda_power.h @@ -0,0 +1,31 @@ +/* + * Common power driver for PDAs and phones with one or two external + * power supplies (AC/USB) connected to main and backup batteries, + * and optional builtin charger. + * + * Copyright © 2007 Anton Vorontsov + * + * 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 __PDA_POWER_H__ +#define __PDA_POWER_H__ + +#define PDA_POWER_CHARGE_AC (1 << 0) +#define PDA_POWER_CHARGE_USB (1 << 1) + +struct pda_power_pdata { + int (*is_ac_online)(void); + int (*is_usb_online)(void); + void (*set_charge)(int flags); + + char **supplied_to; + size_t num_supplicants; + + unsigned int wait_for_status; /* msecs, default is 500 */ + unsigned int wait_for_charger; /* msecs, default is 500 */ +}; + +#endif /* __PDA_POWER_H__ */ -- cgit v1.2.3