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| author | Antonio Ospite <ospite@studenti.unina.it> | 2009-06-19 13:55:42 +0200 |
|---|---|---|
| committer | Richard Purdie <rpurdie@linux.intel.com> | 2009-06-23 20:21:38 +0100 |
| commit | 5054d39e327f76df022163a2ebd02e444c5d65f9 (patch) | |
| tree | 915f4a5406a1147524ba8a2aa7ab42074127be84 /drivers/leds/Kconfig | |
| parent | 07172d2bfa339d6c150d8cdd7c02128177feffbb (diff) | |
| download | linux-rpi3-5054d39e327f76df022163a2ebd02e444c5d65f9.tar.gz linux-rpi3-5054d39e327f76df022163a2ebd02e444c5d65f9.tar.bz2 linux-rpi3-5054d39e327f76df022163a2ebd02e444c5d65f9.zip | |
leds: LED driver for National Semiconductor LP3944 Funlight Chip
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>
Diffstat (limited to 'drivers/leds/Kconfig')
| -rw-r--r-- | drivers/leds/Kconfig | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig index cfcd6bf831c9..7c8e7122aaa9 100644 --- a/drivers/leds/Kconfig +++ b/drivers/leds/Kconfig @@ -146,6 +146,17 @@ config LEDS_GPIO_OF of_platform devices. For instance, LEDs which are listed in a "dts" file. +config LEDS_LP3944 + tristate "LED Support for N.S. LP3944 (Fun Light) I2C chip" + depends on LEDS_CLASS && 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_CLEVO_MAIL tristate "Mail LED on Clevo notebook" depends on LEDS_CLASS && X86 && SERIO_I8042 && DMI |