linux/drivers/power/Kconfig

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menuconfig POWER_SUPPLY
power_supply: Make the core a boolean instead of a tristate On Mon, Apr 02, 2012 at 01:53:23PM +1000, Benjamin Herrenschmidt wrote: > > drivers/built-in.o: In function `.nouveau_pm_trigger': > > (.text+0xa56e8): undefined reference to `.power_supply_is_system_supplied' > > > > nouveau probably needs to depends on CONFIG_POWER_SUPPLY to force a module > > build with the latter is =m > > Ok, not that trivial... > > The problem is more like POWER_SUPPLY should be a bool, not a tristate. > > If you think about it: you don't want things like nouveau to depend on a > random subsystem like that, people will never get it. In fact, > POWER_SUPPLY provides empty inline stubs when not enabled, so that's > really designed to not have depends... > > However that -cannot- work if POWER_SUPPLY is modular and the drivers > who use it are not. > > The only fixes here that make sense I can think of > that don't also involve Kconfig horrors are: > > - Ugly: in power_supply.h, use the extern variant if > > defined(CONFIG_POWER_SUPPLY) || > (defined(CONFIG_POWER_SUPPLY_MODULE) && defined(MODULE)) > > IE. use the stub if power supply is a module and what is being built is > built-in. Of course that's not only ugly, it somewhat sucks from a user > perspective as the subsystem now exists but can't be used by some > drivers... > > - Better: Just make the bloody thing a bool :-) The power supply > framework itself is small enough, just make it a boolean option and > avoid the problem entirely. The actual power supply sub drivers can > remain modular of course. Suggested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2012-05-05 06:06:19 +02:00
bool "Power supply class support"
help
Say Y here to enable power supply class support. This allows
power supply (batteries, AC, USB) monitoring by userspace
via sysfs and uevent (if available) and/or APM kernel interface
(if selected below).
if POWER_SUPPLY
config POWER_SUPPLY_DEBUG
bool "Power supply debug"
help
Say Y here to enable debugging messages for power supply class
and drivers.
config PDA_POWER
tristate "Generic PDA/phone power driver"
depends on !S390
help
Say Y here to enable generic 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.
config APM_POWER
tristate "APM emulation for class batteries"
depends on APM_EMULATION
help
Say Y here to enable support APM status emulation using
battery class devices.
config MAX8925_POWER
tristate "MAX8925 battery charger support"
depends on MFD_MAX8925
help
Say Y here to enable support for the battery charger in the Maxim
MAX8925 PMIC.
config WM831X_BACKUP
tristate "WM831X backup battery charger support"
depends on MFD_WM831X
help
Say Y here to enable support for the backup battery charger
in the Wolfson Microelectronics WM831x PMICs.
config WM831X_POWER
tristate "WM831X PMU support"
depends on MFD_WM831X
help
Say Y here to enable support for the power management unit
provided by Wolfson Microelectronics WM831x PMICs.
config WM8350_POWER
tristate "WM8350 PMU support"
depends on MFD_WM8350
help
Say Y here to enable support for the power management unit
provided by the Wolfson Microelectronics WM8350 PMIC.
config TEST_POWER
tristate "Test power driver"
help
This driver is used for testing. It's safe to say M here.
config BATTERY_DS2760
tristate "DS2760 battery driver (HP iPAQ & others)"
depends on W1 && W1_SLAVE_DS2760
help
Say Y here to enable support for batteries with ds2760 chip.
config BATTERY_DS2780
tristate "DS2780 battery driver"
depends on HAS_IOMEM
select W1
select W1_SLAVE_DS2780
help
Say Y here to enable support for batteries with ds2780 chip.
config BATTERY_DS2781
tristate "DS2781 battery driver"
depends on HAS_IOMEM
select W1
select W1_SLAVE_DS2781
help
If you enable this you will have the DS2781 battery driver support.
The battery monitor chip is used in many batteries/devices
as the one who is responsible for charging/discharging/monitoring
Li+ batteries.
If you are unsure, say N.
config BATTERY_DS2782
tristate "DS2782/DS2786 standalone gas-gauge"
depends on I2C
help
Say Y here to enable support for the DS2782/DS2786 standalone battery
gas-gauge.
config BATTERY_PMU
tristate "Apple PMU battery"
depends on PPC32 && ADB_PMU
help
Say Y here to expose battery information on Apple machines
through the generic battery class.
config BATTERY_OLPC
tristate "One Laptop Per Child battery"
depends on X86_32 && OLPC
help
Say Y to enable support for the battery on the OLPC laptop.
config BATTERY_TOSA
tristate "Sharp SL-6000 (tosa) battery"
depends on MACH_TOSA && MFD_TC6393XB && TOUCHSCREEN_WM97XX
help
Say Y to enable support for the battery on the Sharp Zaurus
SL-6000 (tosa) models.
config BATTERY_COLLIE
tristate "Sharp SL-5500 (collie) battery"
depends on SA1100_COLLIE && MCP_UCB1200
help
Say Y to enable support for the battery on the Sharp Zaurus
SL-5500 (collie) models.
config BATTERY_WM97XX
bool "WM97xx generic battery driver"
depends on TOUCHSCREEN_WM97XX=y
help
Say Y to enable support for battery measured by WM97xx aux port.
config BATTERY_SBS
tristate "SBS Compliant gas gauge"
depends on I2C
help
Say Y to include support for SBS battery driver for SBS-compliant
gas gauges.
config BATTERY_BQ27x00
tristate "BQ27x00 battery driver"
help
Say Y here to enable support for batteries with BQ27x00 (I2C/HDQ) chips.
config BATTERY_BQ27X00_I2C
bool "BQ27200/BQ27500 support"
depends on BATTERY_BQ27x00
depends on I2C
default y
help
Say Y here to enable support for batteries with BQ27x00 (I2C) chips.
config BATTERY_BQ27X00_PLATFORM
bool "BQ27000 support"
depends on BATTERY_BQ27x00
default y
help
Say Y here to enable support for batteries with BQ27000 (HDQ) chips.
config BATTERY_DA9030
tristate "DA9030 battery driver"
depends on PMIC_DA903X
help
Say Y here to enable support for batteries charger integrated into
DA9030 PMIC.
config BATTERY_DA9052
tristate "Dialog DA9052 Battery"
depends on PMIC_DA9052
depends on BROKEN
help
Say Y here to enable support for batteries charger integrated into
DA9052 PMIC.
config BATTERY_MAX17040
tristate "Maxim MAX17040 Fuel Gauge"
depends on I2C
help
MAX17040 is fuel-gauge systems for lithium-ion (Li+) batteries
in handheld and portable equipment. The MAX17040 is configured
to operate with a single lithium cell
config BATTERY_MAX17042
tristate "Maxim MAX17042/17047/17050/8997/8966 Fuel Gauge"
depends on I2C
help
MAX17042 is fuel-gauge systems for lithium-ion (Li+) batteries
in handheld and portable equipment. The MAX17042 is configured
to operate with a single lithium cell. MAX8997 and MAX8966 are
multi-function devices that include fuel gauages that are compatible
with MAX17042. This driver also supports max17047/50 chips which are
improved version of max17042.
config BATTERY_Z2
tristate "Z2 battery driver"
depends on I2C && MACH_ZIPIT2
help
Say Y to include support for the battery on the Zipit Z2.
config BATTERY_S3C_ADC
tristate "Battery driver for Samsung ADC based monitoring"
depends on S3C_ADC
help
Say Y here to enable support for iPAQ h1930/h1940/rx1950 battery
config CHARGER_PCF50633
tristate "NXP PCF50633 MBC"
depends on MFD_PCF50633
help
Say Y to include support for NXP PCF50633 Main Battery Charger.
config BATTERY_JZ4740
tristate "Ingenic JZ4740 battery"
depends on MACH_JZ4740
depends on MFD_JZ4740_ADC
help
Say Y to enable support for the battery on Ingenic JZ4740 based
boards.
This driver can be build as a module. If so, the module will be
called jz4740-battery.
config BATTERY_INTEL_MID
tristate "Battery driver for Intel MID platforms"
depends on INTEL_SCU_IPC && SPI
help
Say Y here to enable the battery driver on Intel MID
platforms.
config CHARGER_ISP1704
tristate "ISP1704 USB Charger Detection"
depends on USB_OTG_UTILS
help
Say Y to enable support for USB Charger Detection with
ISP1707/ISP1704 USB transceivers.
config CHARGER_MAX8903
tristate "MAX8903 Battery DC-DC Charger for USB and Adapter Power"
depends on GENERIC_HARDIRQS
help
Say Y to enable support for the MAX8903 DC-DC charger and sysfs.
The driver supports controlling charger-enable and current-limit
pins based on the status of charger connections with interrupt
handlers.
config CHARGER_TWL4030
tristate "OMAP TWL4030 BCI charger driver"
depends on TWL4030_CORE
help
Say Y here to enable support for TWL4030 Battery Charge Interface.
config CHARGER_LP8727
tristate "TI/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
help
Say Y to include support for chargers which report their online status
through a GPIO pin.
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
help
Say Y to enable support for the battery charger control sysfs and
platform data of MAX8997/LP3974 PMICs.
config CHARGER_MAX8998
tristate "Maxim MAX8998/LP3974 PMIC battery charger driver"
depends on MFD_MAX8998 && REGULATOR_MAX8998
help
Say Y to enable support for the battery charger control sysfs and
platform data of MAX8998/LP3974 PMICs.
config CHARGER_SMB347
tristate "Summit Microelectronics SMB347 Battery Charger"
depends on I2C
select REGMAP_I2C
help
Say Y to include support for Summit Microelectronics SMB347
Battery Charger.
config AB8500_BM
bool "AB8500 Battery Management Driver"
depends on AB8500_CORE && AB8500_GPADC
help
Say Y to include support for AB5500 battery management.
config AB8500_BATTERY_THERM_ON_BATCTRL
bool "Thermistor connected on BATCTRL ADC"
depends on AB8500_BM
help
Say Y to enable battery temperature measurements using
thermistor connected on BATCTRL ADC.
endif # POWER_SUPPLY