Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
22 lines
963 B
Plaintext
22 lines
963 B
Plaintext
What: /sys/bus/iio/devices/iio:deviceX/proximity_on_chip_ambient_infrared_suppression
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Date: January 2011
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KernelVersion: 2.6.37
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Contact: linux-iio@vger.kernel.org
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Description:
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From ISL29018 Data Sheet (FN6619.4, Oct 8, 2012) regarding the
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infrared suppression:
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Scheme 0, makes full n (4, 8, 12, 16) bits (unsigned) proximity
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detection. The range of Scheme 0 proximity count is from 0 to
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2^n. Logic 1 of this bit, Scheme 1, makes n-1 (3, 7, 11, 15)
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bits (2's complementary) proximity_less_ambient detection. The
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range of Scheme 1 proximity count is from -2^(n-1) to 2^(n-1).
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The sign bit is extended for resolutions less than 16. While
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Scheme 0 has wider dynamic range, Scheme 1 proximity detection
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is less affected by the ambient IR noise variation.
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== =============================================
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0 Sensing IR from LED and ambient
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1 Sensing IR from LED with ambient IR rejection
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== =============================================
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