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linux/drivers/leds/Kconfig
Magnus Damm f59b6f9f32 leds: Renesas TPU LED driver 
Add V2 of the LED driver for a single timer channel for the TPU hardware
block commonly found in Renesas SoCs.

The driver has been written with optimal Power Management in mind, so to
save power the LED is driven as a regular GPIO pin in case of maximum
brightness and power off which allows the TPU hardware to be idle and
which in turn allows the clocks to be stopped and the power domain to be
turned off transparently.

Any other brightness level requires use of the TPU hardware in PWM mode.
TPU hardware device clocks and power are managed through Runtime PM.
System suspend and resume is known to be working - during suspend the LED
is set to off by the generic LED code.

The TPU hardware timer is equipeed with a 16-bit counter together with an
up-to-divide-by-64 prescaler which makes the hardware suitable for
brightness control.  Hardware blink is unsupported.

The LED PWM waveform has been verified with a Fluke 123 Scope meter on a
sh7372 Mackerel board.  Tested with experimental sh7372 A3SP power domain
patches.  Platform device bind/unbind tested ok.

V2 has been tested on the DS2 LED of the sh73a0-based AG5EVM.

[axel.lin@gmail.com: include linux/module.h]
Signed-off-by: Magnus Damm <damm@opensource.se>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-10-31 17:30:54 -07:00

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config LEDS_GPIO_REGISTER
bool
help
This option provides the function gpio_led_register_device.
As this function is used by arch code it must not be compiled as a
module.
menuconfig NEW_LEDS
bool "LED Support"
help
Say Y to enable Linux LED support. This allows control of supported
LEDs from both userspace and optionally, by kernel events (triggers).
This is not related to standard keyboard LEDs which are controlled
via the input system.
if NEW_LEDS
config LEDS_CLASS
bool "LED Class Support"
help
This option enables the led sysfs class in /sys/class/leds. You'll
need this to do anything useful with LEDs. If unsure, say N.
comment "LED drivers"
config LEDS_88PM860X
tristate "LED Support for Marvell 88PM860x PMIC"
depends on LEDS_CLASS
depends on MFD_88PM860X
help
This option enables support for on-chip LED drivers found on Marvell
Semiconductor 88PM8606 PMIC.
config LEDS_ATMEL_PWM
tristate "LED Support using Atmel PWM outputs"
depends on LEDS_CLASS
depends on ATMEL_PWM
help
This option enables support for LEDs driven using outputs
of the dedicated PWM controller found on newer Atmel SOCs.
config LEDS_LM3530
tristate "LCD Backlight driver for LM3530"
depends on LEDS_CLASS
depends on I2C
help
This option enables support for the LCD backlight using
LM3530 ambient light sensor chip. This ALS chip can be
controlled manually or using PWM input or using ambient
light automatically.
config LEDS_LOCOMO
tristate "LED Support for Locomo device"
depends on LEDS_CLASS
depends on SHARP_LOCOMO
help
This option enables support for the LEDs on Sharp Locomo.
Zaurus models SL-5500 and SL-5600.
config LEDS_MIKROTIK_RB532
tristate "LED Support for Mikrotik Routerboard 532"
depends on LEDS_CLASS
depends on MIKROTIK_RB532
help
This option enables support for the so called "User LED" of
Mikrotik's Routerboard 532.
config LEDS_S3C24XX
tristate "LED Support for Samsung S3C24XX GPIO LEDs"
depends on LEDS_CLASS
depends on ARCH_S3C2410
help
This option enables support for LEDs connected to GPIO lines
on Samsung S3C24XX series CPUs, such as the S3C2410 and S3C2440.
config LEDS_AMS_DELTA
tristate "LED Support for the Amstrad Delta (E3)"
depends on LEDS_CLASS
depends on MACH_AMS_DELTA
help
This option enables support for the LEDs on Amstrad Delta (E3).
config LEDS_NET48XX
tristate "LED Support for Soekris net48xx series Error LED"
depends on LEDS_CLASS
depends on SCx200_GPIO
help
This option enables support for the Soekris net4801 and net4826 error
LED.
config LEDS_NET5501
tristate "LED Support for Soekris net5501 series Error LED"
depends on LEDS_TRIGGERS
depends on X86 && GPIO_CS5535
select LEDS_TRIGGER_DEFAULT_ON
default n
help
Add support for the Soekris net5501 board (detection, error led
and GPIO).
config LEDS_FSG
tristate "LED Support for the Freecom FSG-3"
depends on LEDS_CLASS
depends on MACH_FSG
help
This option enables support for the LEDs on the Freecom FSG-3.
config LEDS_WRAP
tristate "LED Support for the WRAP series LEDs"
depends on LEDS_CLASS
depends on SCx200_GPIO
help
This option enables support for the PCEngines WRAP programmable LEDs.
config LEDS_COBALT_QUBE
tristate "LED Support for the Cobalt Qube series front LED"
depends on LEDS_CLASS
depends on MIPS_COBALT
help
This option enables support for the front LED on Cobalt Qube series
config LEDS_COBALT_RAQ
bool "LED Support for the Cobalt Raq series"
depends on LEDS_CLASS=y && MIPS_COBALT
select LEDS_TRIGGERS
help
This option enables support for the Cobalt Raq series LEDs.
config LEDS_SUNFIRE
tristate "LED support for SunFire servers."
depends on LEDS_CLASS
depends on SPARC64
select LEDS_TRIGGERS
help
This option enables support for the Left, Middle, and Right
LEDs on the I/O and CPU boards of SunFire UltraSPARC servers.
config LEDS_HP6XX
tristate "LED Support for the HP Jornada 6xx"
depends on LEDS_CLASS
depends on SH_HP6XX
help
This option enables LED support for the handheld
HP Jornada 620/660/680/690.
config LEDS_PCA9532
tristate "LED driver for PCA9532 dimmer"
depends on LEDS_CLASS
depends on I2C && INPUT && EXPERIMENTAL
help
This option enables support for NXP pca9532
LED controller. It is generally only useful
as a platform driver
config LEDS_PCA9532_GPIO
bool "Enable GPIO support for PCA9532"
depends on LEDS_PCA9532
depends on GPIOLIB
help
Allow unused pins on PCA9532 to be used as gpio.
To use a pin as gpio pca9532_type in pca9532_platform data needs to
set to PCA9532_TYPE_GPIO.
config LEDS_GPIO
tristate "LED Support for GPIO connected LEDs"
depends on LEDS_CLASS
depends on GENERIC_GPIO
help
This option enables support for the LEDs connected to GPIO
outputs. To be useful the particular board must have LEDs
and they must be connected to the GPIO lines. The LEDs must be
defined as platform devices and/or OpenFirmware platform devices.
The code to use these bindings can be selected below.
config LEDS_LP3944
tristate "LED Support for N.S. LP3944 (Fun Light) I2C chip"
depends on LEDS_CLASS
depends on I2C
help
This option enables support for LEDs connected to the National
Semiconductor LP3944 Lighting Management Unit (LMU) also known as
Fun Light Chip.
To compile this driver as a module, choose M here: the
module will be called leds-lp3944.
config LEDS_LP5521
tristate "LED Support for N.S. LP5521 LED driver chip"
depends on LEDS_CLASS && I2C
help
If you say yes here you get support for the National Semiconductor
LP5521 LED driver. It is 3 channel chip with programmable engines.
Driver provides direct control via LED class and interface for
programming the engines.
config LEDS_LP5523
tristate "LED Support for N.S. LP5523 LED driver chip"
depends on LEDS_CLASS && I2C
help
If you say yes here you get support for the National Semiconductor
LP5523 LED driver. It is 9 channel chip with programmable engines.
Driver provides direct control via LED class and interface for
programming the engines.
config LEDS_CLEVO_MAIL
tristate "Mail LED on Clevo notebook"
depends on LEDS_CLASS
depends on X86 && SERIO_I8042 && DMI
help
This driver makes the mail LED accessible from userspace
programs through the leds subsystem. This LED have three
known mode: off, blink at 0.5Hz and blink at 1Hz.
The driver supports two kinds of interface: using ledtrig-timer
or through /sys/class/leds/clevo::mail/brightness. As this LED
cannot change it's brightness it blinks instead. The brightness
value 0 means off, 1..127 means blink at 0.5Hz and 128..255 means
blink at 1Hz.
This module can drive the mail LED for the following notebooks:
Clevo D400P
Clevo D410J
Clevo D410V
Clevo D400V/D470V (not tested, but might work)
Clevo M540N
Clevo M5x0N (not tested, but might work)
Positivo Mobile (Clevo M5x0V)
If your model is not listed here you can try the "nodetect"
module parameter.
To compile this driver as a module, choose M here: the
module will be called leds-clevo-mail.
config LEDS_PCA955X
tristate "LED Support for PCA955x I2C chips"
depends on LEDS_CLASS
depends on I2C
help
This option enables support for LEDs connected to PCA955x
LED driver chips accessed via the I2C bus. Supported
devices include PCA9550, PCA9551, PCA9552, and PCA9553.
config LEDS_WM831X_STATUS
tristate "LED support for status LEDs on WM831x PMICs"
depends on LEDS_CLASS
depends on MFD_WM831X
help
This option enables support for the status LEDs of the WM831x
series of PMICs.
config LEDS_WM8350
tristate "LED Support for WM8350 AudioPlus PMIC"
depends on LEDS_CLASS
depends on MFD_WM8350
help
This option enables support for LEDs driven by the Wolfson
Microelectronics WM8350 AudioPlus PMIC.
config LEDS_DA903X
tristate "LED Support for DA9030/DA9034 PMIC"
depends on LEDS_CLASS
depends on PMIC_DA903X
help
This option enables support for on-chip LED drivers found
on Dialog Semiconductor DA9030/DA9034 PMICs.
config LEDS_DAC124S085
tristate "LED Support for DAC124S085 SPI DAC"
depends on LEDS_CLASS
depends on SPI
help
This option enables support for DAC124S085 SPI DAC from NatSemi,
which can be used to control up to four LEDs.
config LEDS_PWM
tristate "PWM driven LED Support"
depends on LEDS_CLASS
depends on HAVE_PWM
help
This option enables support for pwm driven LEDs
config LEDS_REGULATOR
tristate "REGULATOR driven LED support"
depends on LEDS_CLASS
depends on REGULATOR
help
This option enables support for regulator driven LEDs.
config LEDS_BD2802
tristate "LED driver for BD2802 RGB LED"
depends on LEDS_CLASS
depends on I2C
help
This option enables support for BD2802GU RGB LED driver chips
accessed via the I2C bus.
config LEDS_INTEL_SS4200
tristate "LED driver for Intel NAS SS4200 series"
depends on LEDS_CLASS
depends on PCI && DMI
help
This option enables support for the Intel SS4200 series of
Network Attached Storage servers. You may control the hard
drive or power LEDs on the front panel. Using this driver
can stop the front LED from blinking after startup.
config LEDS_LT3593
tristate "LED driver for LT3593 controllers"
depends on LEDS_CLASS
depends on GENERIC_GPIO
help
This option enables support for LEDs driven by a Linear Technology
LT3593 controller. This controller uses a special one-wire pulse
coding protocol to set the brightness.
config LEDS_ADP5520
tristate "LED Support for ADP5520/ADP5501 PMIC"
depends on LEDS_CLASS
depends on PMIC_ADP5520
help
This option enables support for on-chip LED drivers found
on Analog Devices ADP5520/ADP5501 PMICs.
To compile this driver as a module, choose M here: the module will
be called leds-adp5520.
config LEDS_DELL_NETBOOKS
tristate "External LED on Dell Business Netbooks"
depends on LEDS_CLASS
depends on X86 && ACPI_WMI
help
This adds support for the Latitude 2100 and similar
notebooks that have an external LED.
config LEDS_MC13783
tristate "LED Support for MC13783 PMIC"
depends on LEDS_CLASS
depends on MFD_MC13783
help
This option enable support for on-chip LED drivers found
on Freescale Semiconductor MC13783 PMIC.
config LEDS_NS2
tristate "LED support for Network Space v2 GPIO LEDs"
depends on LEDS_CLASS
depends on MACH_NETSPACE_V2 || MACH_INETSPACE_V2 || MACH_NETSPACE_MAX_V2 || D2NET_V2
default y
help
This option enable support for the dual-GPIO LED found on the
Network Space v2 board (and parents). This include Internet Space v2,
Network Space (Max) v2 and d2 Network v2 boards.
config LEDS_NETXBIG
tristate "LED support for Big Network series LEDs"
depends on MACH_NET2BIG_V2 || MACH_NET5BIG_V2
depends on LEDS_CLASS
default y
help
This option enable support for LEDs found on the LaCie 2Big
and 5Big Network v2 boards. The LEDs are wired to a CPLD and are
controlled through a GPIO extension bus.
config LEDS_ASIC3
bool "LED support for the HTC ASIC3"
depends on LEDS_CLASS
depends on MFD_ASIC3
default y
help
This option enables support for the LEDs on the HTC ASIC3. The HTC
ASIC3 LED GPIOs are inputs, not outputs, thus the leds-gpio driver
cannot be used. This driver supports hardware blinking with an on+off
period from 62ms to 125s. Say Y to enable LEDs on the HP iPAQ hx4700.
config LEDS_RENESAS_TPU
bool "LED support for Renesas TPU"
depends on LEDS_CLASS && HAVE_CLK && GENERIC_GPIO
help
This option enables build of the LED TPU platform driver,
suitable to drive any TPU channel on newer Renesas SoCs.
The driver controls the GPIO pin connected to the LED via
the GPIO framework and expects the LED to be connected to
a pin that can be driven in both GPIO mode and using TPU
pin function. The latter to support brightness control.
Brightness control is supported but hardware blinking is not.
config LEDS_TRIGGERS
bool "LED Trigger support"
depends on LEDS_CLASS
help
This option enables trigger support for the leds class.
These triggers allow kernel events to drive the LEDs and can
be configured via sysfs. If unsure, say Y.
comment "LED Triggers"
config LEDS_TRIGGER_TIMER
tristate "LED Timer Trigger"
depends on LEDS_TRIGGERS
help
This allows LEDs to be controlled by a programmable timer
via sysfs. Some LED hardware can be programmed to start
blinking the LED without any further software interaction.
For more details read Documentation/leds/leds-class.txt.
If unsure, say Y.
config LEDS_TRIGGER_IDE_DISK
bool "LED IDE Disk Trigger"
depends on IDE_GD_ATA
depends on LEDS_TRIGGERS
help
This allows LEDs to be controlled by IDE disk activity.
If unsure, say Y.
config LEDS_TRIGGER_HEARTBEAT
tristate "LED Heartbeat Trigger"
depends on LEDS_TRIGGERS
help
This allows LEDs to be controlled by a CPU load average.
The flash frequency is a hyperbolic function of the 1-minute
load average.
If unsure, say Y.
config LEDS_TRIGGER_BACKLIGHT
tristate "LED backlight Trigger"
depends on LEDS_TRIGGERS
help
This allows LEDs to be controlled as a backlight device: they
turn off and on when the display is blanked and unblanked.
If unsure, say N.
config LEDS_TRIGGER_GPIO
tristate "LED GPIO Trigger"
depends on LEDS_TRIGGERS
depends on GPIOLIB
help
This allows LEDs to be controlled by gpio events. It's good
when using gpios as switches and triggering the needed LEDs
from there. One use case is n810's keypad LEDs that could
be triggered by this trigger when user slides up to show
keypad.
If unsure, say N.
config LEDS_TRIGGER_DEFAULT_ON
tristate "LED Default ON Trigger"
depends on LEDS_TRIGGERS
help
This allows LEDs to be initialised in the ON state.
If unsure, say Y.
comment "iptables trigger is under Netfilter config (LED target)"
depends on LEDS_TRIGGERS
endif # NEW_LEDS
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