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cff8431bf4
This one is challenging as both the places this appears in specific drivers are making 'unusual' uses of what looks like a simple output current channel. As a side note, this was particular bit of ABI occurs in other drivers where the use is much more straight forward e.g. dac/ad5421 This patch attempts to make a best effort of adding it to the main docs but retaining enough information. Both of these drivers probably need specific documents being written to describe their unusual interfaces, but those should be in the main documentation, not under Documentation/ABI. That is a non trivial job so left for another time. Fixes $ scripts/get_abi.pl validate Warning: /sys/bus/iio/devices/iio:deviceX/out_currentY_raw is defined 2 times: ./Documentation/ABI/testing/sysfs-bus-iio-light-lm3533-als:43 ./Documentation/ABI/testing/sysfs-bus-iio-health-afe440x:38 Reported-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Link: https://lore.kernel.org/r/20210117153816.696693-5-jic23@kernel.org
39 lines
1.2 KiB
Text
39 lines
1.2 KiB
Text
What: /sys/bus/iio/devices/iio:deviceX/in_intensityY_raw
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Date: May 2016
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KernelVersion:
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Contact: Andrew F. Davis <afd@ti.com>
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Description:
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Get measured values from the ADC for these stages. Y is the
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specific stage number corresponding to datasheet stage names
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as follows:
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== ==========
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1 LED2
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2 ALED2/LED3
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3 LED1
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4 ALED1/LED4
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== ==========
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Note that channels 5 and 6 represent LED2-ALED2 and LED1-ALED1
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respectively which simply helper channels containing the
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calculated difference in the value of stage 1 - 2 and 3 - 4.
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The values are expressed in 24-bit twos complement.
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The LED current for the stage is controlled via
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out_currentY_raw.
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What: /sys/bus/iio/devices/iio:deviceX/in_intensityY_offset
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Date: May 2016
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KernelVersion:
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Contact: Andrew F. Davis <afd@ti.com>
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Description:
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Get and set the offset cancellation DAC setting for these
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stages. The values are expressed in 5-bit sign-magnitude.
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What: /sys/bus/iio/devices/iio:deviceX/in_intensityY_resistance
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What: /sys/bus/iio/devices/iio:deviceX/in_intensityY_capacitance
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Date: May 2016
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KernelVersion:
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Contact: Andrew F. Davis <afd@ti.com>
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Description:
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Get and set the resistance and the capacitance settings for the
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Transimpedance Amplifier during the associated stage.
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