401dea7f7a
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>
65 lines
1.5 KiB
Text
65 lines
1.5 KiB
Text
What: /sys/class/leds/<led>/als_channel
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Date: May 2012
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KernelVersion: 3.5
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Contact: Johan Hovold <jhovold@gmail.com>
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Description:
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Set the ALS output channel to use as input in
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ALS-current-control mode (1, 2), where
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1 - out_current1
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2 - out_current2
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What: /sys/class/leds/<led>/als_en
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Date: May 2012
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KernelVersion: 3.5
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Contact: Johan Hovold <jhovold@gmail.com>
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Description:
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Enable ALS-current-control mode (0, 1).
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What: /sys/class/leds/<led>/falltime
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What: /sys/class/leds/<led>/risetime
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Date: April 2012
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KernelVersion: 3.5
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Contact: Johan Hovold <jhovold@gmail.com>
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Description:
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Set the pattern generator fall and rise times (0..7), where
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0 - 2048 us
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1 - 262 ms
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2 - 524 ms
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3 - 1.049 s
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4 - 2.097 s
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5 - 4.194 s
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6 - 8.389 s
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7 - 16.78 s
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What: /sys/class/leds/<led>/id
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Date: April 2012
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KernelVersion: 3.5
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Contact: Johan Hovold <jhovold@gmail.com>
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Description:
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Get the id of this led (0..3).
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What: /sys/class/leds/<led>/linear
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Date: April 2012
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KernelVersion: 3.5
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Contact: Johan Hovold <jhovold@gmail.com>
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Description:
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Set the brightness-mapping mode (0, 1), where
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0 - exponential mode
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1 - linear mode
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What: /sys/class/leds/<led>/pwm
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Date: April 2012
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KernelVersion: 3.5
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Contact: Johan Hovold <jhovold@gmail.com>
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Description:
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Set the PWM-input control mask (5 bits), where
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bit 5 - PWM-input enabled in Zone 4
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bit 4 - PWM-input enabled in Zone 3
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bit 3 - PWM-input enabled in Zone 2
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bit 2 - PWM-input enabled in Zone 1
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bit 1 - PWM-input enabled in Zone 0
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bit 0 - PWM-input enabled
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