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POWER-Z is a series of devices to monitor power characteristics of USB-C connections and display those on a on-device display. Some of the devices, notably KM002C and KM003C, contain an additional port which exposes the measurements via USB. This is a driver for this monitor port. It was developed and tested with the KM003C. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Link: https://lore.kernel.org/r/20230902-powerz-v4-1-7ec2c1440687@weissschuh.net [groeck: Release urb after hwmon registration error; Move priv->status initialization to correct place before reinit_completion ] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
31 lines
672 B
ReStructuredText
31 lines
672 B
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0-or-later
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Kernel driver POWERZ
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====================
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Supported chips:
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* ChargerLAB POWER-Z KM003C
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Prefix: 'powerz'
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Addresses scanned: -
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Author:
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- Thomas Weißschuh <linux@weissschuh.net>
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Description
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-----------
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This driver implements support for the ChargerLAB POWER-Z USB-C power testing
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family.
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The device communicates with the custom protocol over USB.
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The channel labels exposed via hwmon match the labels used by the on-device
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display and the official POWER-Z PC software.
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As current can flow in both directions through the tester the sign of the
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channel "curr1_input" (label "IBUS") indicates the direction.
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