5054d39e32
LEDs driver for National Semiconductor LP3944 Funlight Chip http://www.national.com/pf/LP/LP3944.html This helper chip can drive up to 8 leds, with two programmable DIM modes; it could even be used as a gpio expander but this driver assumes it is used as a led controller. The DIM modes are used to set _blink_ patterns for leds, the pattern is specified supplying two parameters: - period: from 0s to 1.6s - duty cycle: percentage of the period the led is on, from 0 to 100 LP3944 can be found on Motorola A910 smartphone, where it drives the rgb leds, the camera flash light and the displays backlights. Signed-off-by: Antonio Ospite <ospite@studenti.unina.it> Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
300 lines
9.1 KiB
Text
300 lines
9.1 KiB
Text
menuconfig NEW_LEDS
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bool "LED Support"
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help
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Say Y to enable Linux LED support. This allows control of supported
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LEDs from both userspace and optionally, by kernel events (triggers).
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This is not related to standard keyboard LEDs which are controlled
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via the input system.
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if NEW_LEDS
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config LEDS_CLASS
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tristate "LED Class Support"
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help
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This option enables the led sysfs class in /sys/class/leds. You'll
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need this to do anything useful with LEDs. If unsure, say N.
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comment "LED drivers"
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config LEDS_ATMEL_PWM
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tristate "LED Support using Atmel PWM outputs"
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depends on LEDS_CLASS && ATMEL_PWM
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help
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This option enables support for LEDs driven using outputs
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of the dedicated PWM controller found on newer Atmel SOCs.
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config LEDS_LOCOMO
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tristate "LED Support for Locomo device"
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depends on LEDS_CLASS && SHARP_LOCOMO
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help
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This option enables support for the LEDs on Sharp Locomo.
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Zaurus models SL-5500 and SL-5600.
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config LEDS_MIKROTIK_RB532
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tristate "LED Support for Mikrotik Routerboard 532"
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depends on LEDS_CLASS && MIKROTIK_RB532
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help
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This option enables support for the so called "User LED" of
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Mikrotik's Routerboard 532.
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config LEDS_S3C24XX
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tristate "LED Support for Samsung S3C24XX GPIO LEDs"
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depends on LEDS_CLASS && ARCH_S3C2410
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help
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This option enables support for LEDs connected to GPIO lines
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on Samsung S3C24XX series CPUs, such as the S3C2410 and S3C2440.
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config LEDS_AMS_DELTA
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tristate "LED Support for the Amstrad Delta (E3)"
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depends on LEDS_CLASS && MACH_AMS_DELTA
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help
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This option enables support for the LEDs on Amstrad Delta (E3).
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config LEDS_NET48XX
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tristate "LED Support for Soekris net48xx series Error LED"
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depends on LEDS_CLASS && SCx200_GPIO
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help
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This option enables support for the Soekris net4801 and net4826 error
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LED.
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config LEDS_FSG
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tristate "LED Support for the Freecom FSG-3"
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depends on LEDS_CLASS && MACH_FSG
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help
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This option enables support for the LEDs on the Freecom FSG-3.
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config LEDS_WRAP
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tristate "LED Support for the WRAP series LEDs"
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depends on LEDS_CLASS && SCx200_GPIO
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help
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This option enables support for the PCEngines WRAP programmable LEDs.
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config LEDS_ALIX2
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tristate "LED Support for ALIX.2 and ALIX.3 series"
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depends on LEDS_CLASS && X86 && EXPERIMENTAL
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help
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This option enables support for the PCEngines ALIX.2 and ALIX.3 LEDs.
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You have to set leds-alix2.force=1 for boards with Award BIOS.
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config LEDS_H1940
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tristate "LED Support for iPAQ H1940 device"
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depends on LEDS_CLASS && ARCH_H1940
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help
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This option enables support for the LEDs on the h1940.
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config LEDS_COBALT_QUBE
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tristate "LED Support for the Cobalt Qube series front LED"
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depends on LEDS_CLASS && MIPS_COBALT
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help
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This option enables support for the front LED on Cobalt Qube series
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config LEDS_COBALT_RAQ
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bool "LED Support for the Cobalt Raq series"
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depends on LEDS_CLASS=y && MIPS_COBALT
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select LEDS_TRIGGERS
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help
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This option enables support for the Cobalt Raq series LEDs.
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config LEDS_SUNFIRE
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tristate "LED support for SunFire servers."
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depends on LEDS_CLASS && SPARC64
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select LEDS_TRIGGERS
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help
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This option enables support for the Left, Middle, and Right
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LEDs on the I/O and CPU boards of SunFire UltraSPARC servers.
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config LEDS_HP6XX
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tristate "LED Support for the HP Jornada 6xx"
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depends on LEDS_CLASS && SH_HP6XX
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help
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This option enables LED support for the handheld
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HP Jornada 620/660/680/690.
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config LEDS_PCA9532
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tristate "LED driver for PCA9532 dimmer"
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depends on LEDS_CLASS && I2C && INPUT && EXPERIMENTAL
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help
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This option enables support for NXP pca9532
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LED controller. It is generally only useful
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as a platform driver
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config LEDS_GPIO
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tristate "LED Support for GPIO connected LEDs"
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depends on LEDS_CLASS && GENERIC_GPIO
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help
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This option enables support for the LEDs connected to GPIO
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outputs. To be useful the particular board must have LEDs
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and they must be connected to the GPIO lines. The LEDs must be
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defined as platform devices and/or OpenFirmware platform devices.
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The code to use these bindings can be selected below.
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config LEDS_GPIO_PLATFORM
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bool "Platform device bindings for GPIO LEDs"
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depends on LEDS_GPIO
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default y
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help
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Let the leds-gpio driver drive LEDs which have been defined as
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platform devices. If you don't know what this means, say yes.
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config LEDS_GPIO_OF
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bool "OpenFirmware platform device bindings for GPIO LEDs"
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depends on LEDS_GPIO && OF_DEVICE
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default y
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help
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Let the leds-gpio driver drive LEDs which have been defined as
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of_platform devices. For instance, LEDs which are listed in a "dts"
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file.
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config LEDS_LP3944
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tristate "LED Support for N.S. LP3944 (Fun Light) I2C chip"
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depends on LEDS_CLASS && I2C
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help
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This option enables support for LEDs connected to the National
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Semiconductor LP3944 Lighting Management Unit (LMU) also known as
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Fun Light Chip.
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To compile this driver as a module, choose M here: the
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module will be called leds-lp3944.
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config LEDS_CLEVO_MAIL
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tristate "Mail LED on Clevo notebook"
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depends on LEDS_CLASS && X86 && SERIO_I8042 && DMI
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help
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This driver makes the mail LED accessible from userspace
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programs through the leds subsystem. This LED have three
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known mode: off, blink at 0.5Hz and blink at 1Hz.
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The driver supports two kinds of interface: using ledtrig-timer
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or through /sys/class/leds/clevo::mail/brightness. As this LED
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cannot change it's brightness it blinks instead. The brightness
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value 0 means off, 1..127 means blink at 0.5Hz and 128..255 means
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blink at 1Hz.
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This module can drive the mail LED for the following notebooks:
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Clevo D400P
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Clevo D410J
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Clevo D410V
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Clevo D400V/D470V (not tested, but might work)
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Clevo M540N
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Clevo M5x0N (not tested, but might work)
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Positivo Mobile (Clevo M5x0V)
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If your model is not listed here you can try the "nodetect"
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module parameter.
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To compile this driver as a module, choose M here: the
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module will be called leds-clevo-mail.
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config LEDS_PCA955X
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tristate "LED Support for PCA955x I2C chips"
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depends on LEDS_CLASS && I2C
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help
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This option enables support for LEDs connected to PCA955x
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LED driver chips accessed via the I2C bus. Supported
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devices include PCA9550, PCA9551, PCA9552, and PCA9553.
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config LEDS_WM8350
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tristate "LED Support for WM8350 AudioPlus PMIC"
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depends on LEDS_CLASS && MFD_WM8350
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help
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This option enables support for LEDs driven by the Wolfson
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Microelectronics WM8350 AudioPlus PMIC.
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config LEDS_DA903X
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tristate "LED Support for DA9030/DA9034 PMIC"
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depends on LEDS_CLASS && PMIC_DA903X
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help
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This option enables support for on-chip LED drivers found
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on Dialog Semiconductor DA9030/DA9034 PMICs.
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config LEDS_DAC124S085
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tristate "LED Support for DAC124S085 SPI DAC"
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depends on LEDS_CLASS && SPI
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help
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This option enables support for DAC124S085 SPI DAC from NatSemi,
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which can be used to control up to four LEDs.
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config LEDS_PWM
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tristate "PWM driven LED Support"
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depends on LEDS_CLASS && HAVE_PWM
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help
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This option enables support for pwm driven LEDs
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config LEDS_BD2802
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tristate "LED driver for BD2802 RGB LED"
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depends on LEDS_CLASS && I2C
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help
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This option enables support for BD2802GU RGB LED driver chips
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accessed via the I2C bus.
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comment "LED Triggers"
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config LEDS_TRIGGERS
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bool "LED Trigger support"
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help
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This option enables trigger support for the leds class.
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These triggers allow kernel events to drive the LEDs and can
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be configured via sysfs. If unsure, say Y.
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config LEDS_TRIGGER_TIMER
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tristate "LED Timer Trigger"
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depends on LEDS_TRIGGERS
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help
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This allows LEDs to be controlled by a programmable timer
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via sysfs. Some LED hardware can be programmed to start
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blinking the LED without any further software interaction.
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For more details read Documentation/leds-class.txt.
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If unsure, say Y.
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config LEDS_TRIGGER_IDE_DISK
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bool "LED IDE Disk Trigger"
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depends on LEDS_TRIGGERS && IDE_GD_ATA
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help
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This allows LEDs to be controlled by IDE disk activity.
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If unsure, say Y.
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config LEDS_TRIGGER_HEARTBEAT
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tristate "LED Heartbeat Trigger"
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depends on LEDS_TRIGGERS
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help
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This allows LEDs to be controlled by a CPU load average.
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The flash frequency is a hyperbolic function of the 1-minute
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load average.
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If unsure, say Y.
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config LEDS_TRIGGER_BACKLIGHT
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tristate "LED backlight Trigger"
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depends on LEDS_TRIGGERS
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help
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This allows LEDs to be controlled as a backlight device: they
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turn off and on when the display is blanked and unblanked.
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If unsure, say N.
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config LEDS_TRIGGER_GPIO
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tristate "LED GPIO Trigger"
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depends on LEDS_TRIGGERS
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depends on GPIOLIB
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help
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This allows LEDs to be controlled by gpio events. It's good
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when using gpios as switches and triggering the needed LEDs
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from there. One use case is n810's keypad LEDs that could
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be triggered by this trigger when user slides up to show
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keypad.
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If unsure, say N.
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config LEDS_TRIGGER_DEFAULT_ON
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tristate "LED Default ON Trigger"
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depends on LEDS_TRIGGERS
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help
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This allows LEDs to be initialised in the ON state.
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If unsure, say Y.
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comment "iptables trigger is under Netfilter config (LED target)"
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depends on LEDS_TRIGGERS
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endif # NEW_LEDS
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