iio: light: ROHM BU27034 Ambient Light Sensor
ROHM BU27034 is an ambient light sensor with 3 channels and 3 photo diodes capable of detecting a very wide range of illuminance. Typical application is adjusting LCD and backlight power of TVs and mobile phones. Add initial support for the ROHM BU27034 ambient light sensor. NOTE: - Driver exposes 4 channels. One IIO_LIGHT channel providing the calculated lux values based on measured data from diodes #0 and #1. In addition, 3 IIO_INTENSITY channels are emitting the raw register data from all diodes for more intense user-space computations. - Sensor has GAIN values that can be adjusted from 1x to 4096x. - Sensor has adjustible measurement times of 5, 55, 100, 200 and 400 mS. Driver does not support 5 mS which has special limitations. - Driver exposes standard 'scale' adjustment which is implemented by: 1) Trying to adjust only the GAIN 2) If GAIN adjustment alone can't provide requested scale, adjusting both the time and the gain is attempted. - Driver exposes writable INT_TIME property that can be used for adjusting the measurement time. Time adjustment will also cause the driver to try to adjust the GAIN so that the overall scale is kept as close to the original as possible. Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com> Link: https://lore.kernel.org/r/2a7efb6f335da5526fbe34b95137c5e45db5c5d3.1680263956.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Родитель
0dca5c9730
Коммит
e52afbd610
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@ -289,6 +289,20 @@ config JSA1212
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To compile this driver as a module, choose M here:
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the module will be called jsa1212.
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config ROHM_BU27034
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tristate "ROHM BU27034 ambient light sensor"
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depends on I2C
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select REGMAP_I2C
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select IIO_GTS_HELPER
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select IIO_BUFFER
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select IIO_KFIFO_BUF
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help
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Enable support for the ROHM BU27034 ambient light sensor. ROHM BU27034
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is an ambient light sesnor with 3 channels and 3 photo diodes capable
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of detecting a very wide range of illuminance.
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Typical application is adjusting LCD and backlight power of TVs and
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mobile phones.
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config RPR0521
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tristate "ROHM RPR0521 ALS and proximity sensor driver"
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depends on I2C
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@ -38,6 +38,7 @@ obj-$(CONFIG_MAX44009) += max44009.o
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obj-$(CONFIG_NOA1305) += noa1305.o
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obj-$(CONFIG_OPT3001) += opt3001.o
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obj-$(CONFIG_PA12203001) += pa12203001.o
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obj-$(CONFIG_ROHM_BU27034) += rohm-bu27034.o
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obj-$(CONFIG_RPR0521) += rpr0521.o
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obj-$(CONFIG_SI1133) += si1133.o
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obj-$(CONFIG_SI1145) += si1145.o
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