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| author | Johan Hovold <jhovold@gmail.com> | 2012-05-29 15:07:31 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-29 16:22:32 -0700 |
| commit | 401dea7f7ade662b77c33ce2498fb5b4f97cb29c (patch) | |
| tree | 2e54d2e170e3e9ba0db256e633c91b2f802f9896 /Documentation | |
| parent | e7e11d8ba807d451857b5c68abe249c7fc2b980f (diff) | |
| download | blackbird-op-linux-401dea7f7ade662b77c33ce2498fb5b4f97cb29c.tar.gz blackbird-op-linux-401dea7f7ade662b77c33ce2498fb5b4f97cb29c.zip | |
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: Johan 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: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-led-driver-lm3533 | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-led-driver-lm3533 b/Documentation/ABI/testing/sysfs-class-led-driver-lm3533 new file mode 100644 index 000000000000..620ebb3b9baa --- /dev/null +++ b/Documentation/ABI/testing/sysfs-class-led-driver-lm3533 @@ -0,0 +1,65 @@ +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 |
