Commit 401dea7f authored by Johan Hovold's avatar Johan Hovold Committed by Linus Torvalds

leds: add LM3533 LED driver

Add sub-driver for the LEDs on National Semiconductor / TI LM3533 lighting
power chips.

The chip provides 256 brightness levels, hardware accelerated blinking as
well as ambient-light-sensor and pwm input control.
Signed-off-by: default avatarJohan Hovold <jhovold@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Rob Landley <rob@landley.net>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: Jonathan Cameron <jic23@cam.ac.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Bryan Wu <bryan.wu@canonical.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent e7e11d8b
What: /sys/class/leds/<led>/als_channel
Date: May 2012
KernelVersion: 3.5
Contact: Johan Hovold <jhovold@gmail.com>
Description:
Set the ALS output channel to use as input in
ALS-current-control mode (1, 2), where
1 - out_current1
2 - out_current2
What: /sys/class/leds/<led>/als_en
Date: May 2012
KernelVersion: 3.5
Contact: Johan Hovold <jhovold@gmail.com>
Description:
Enable ALS-current-control mode (0, 1).
What: /sys/class/leds/<led>/falltime
What: /sys/class/leds/<led>/risetime
Date: April 2012
KernelVersion: 3.5
Contact: Johan Hovold <jhovold@gmail.com>
Description:
Set the pattern generator fall and rise times (0..7), where
0 - 2048 us
1 - 262 ms
2 - 524 ms
3 - 1.049 s
4 - 2.097 s
5 - 4.194 s
6 - 8.389 s
7 - 16.78 s
What: /sys/class/leds/<led>/id
Date: April 2012
KernelVersion: 3.5
Contact: Johan Hovold <jhovold@gmail.com>
Description:
Get the id of this led (0..3).
What: /sys/class/leds/<led>/linear
Date: April 2012
KernelVersion: 3.5
Contact: Johan Hovold <jhovold@gmail.com>
Description:
Set the brightness-mapping mode (0, 1), where
0 - exponential mode
1 - linear mode
What: /sys/class/leds/<led>/pwm
Date: April 2012
KernelVersion: 3.5
Contact: Johan Hovold <jhovold@gmail.com>
Description:
Set the PWM-input control mask (5 bits), where
bit 5 - PWM-input enabled in Zone 4
bit 4 - PWM-input enabled in Zone 3
bit 3 - PWM-input enabled in Zone 2
bit 2 - PWM-input enabled in Zone 1
bit 1 - PWM-input enabled in Zone 0
bit 0 - PWM-input enabled
...@@ -50,6 +50,19 @@ config LEDS_LM3530 ...@@ -50,6 +50,19 @@ config LEDS_LM3530
controlled manually or using PWM input or using ambient controlled manually or using PWM input or using ambient
light automatically. light automatically.
config LEDS_LM3533
tristate "LED support for LM3533"
depends on LEDS_CLASS
depends on MFD_LM3533
help
This option enables support for the LEDs on National Semiconductor /
TI LM3533 Lighting Power chips.
The LEDs can be controlled directly, through PWM input, or by the
ambient-light-sensor interface. The chip supports
hardware-accelerated blinking with maximum on and off periods of 9.8
and 77 seconds respectively.
config LEDS_LOCOMO config LEDS_LOCOMO
tristate "LED Support for Locomo device" tristate "LED Support for Locomo device"
depends on LEDS_CLASS depends on LEDS_CLASS
......
...@@ -10,6 +10,7 @@ obj-$(CONFIG_LEDS_ATMEL_PWM) += leds-atmel-pwm.o ...@@ -10,6 +10,7 @@ obj-$(CONFIG_LEDS_ATMEL_PWM) += leds-atmel-pwm.o
obj-$(CONFIG_LEDS_BD2802) += leds-bd2802.o obj-$(CONFIG_LEDS_BD2802) += leds-bd2802.o
obj-$(CONFIG_LEDS_LOCOMO) += leds-locomo.o obj-$(CONFIG_LEDS_LOCOMO) += leds-locomo.o
obj-$(CONFIG_LEDS_LM3530) += leds-lm3530.o obj-$(CONFIG_LEDS_LM3530) += leds-lm3530.o
obj-$(CONFIG_LEDS_LM3533) += leds-lm3533.o
obj-$(CONFIG_LEDS_MIKROTIK_RB532) += leds-rb532.o obj-$(CONFIG_LEDS_MIKROTIK_RB532) += leds-rb532.o
obj-$(CONFIG_LEDS_S3C24XX) += leds-s3c24xx.o obj-$(CONFIG_LEDS_S3C24XX) += leds-s3c24xx.o
obj-$(CONFIG_LEDS_NET48XX) += leds-net48xx.o obj-$(CONFIG_LEDS_NET48XX) += leds-net48xx.o
......
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