mirror of
https://git.proxmox.com/git/fwupd
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| .. | ||
| fu-gpio-device.c | ||
| fu-gpio-device.h | ||
| fu-gpio-plugin.c | ||
| fu-gpio-plugin.h | ||
| gpio.quirk | ||
| meson.build | ||
| README.md | ||
GPIO
Introduction
This plugin sets GPIO outputs either high or low before and/or after an update has been deployed.
GUID Generation
These device use GPIO gpiochip_info.label values, e.g.
GPIO\ID_INT3450:00
Quirk Use
This plugin uses the following plugin-specific quirks:
GpioForUpdate
The GPIO bit to set before the update is deployed e.g. INT3450:00,SPI_MUX,high.
After the update has finished, the bits are returned to the default state.
For example, to set GPIO pin 2 low for the duration of the ColorHug device update this could be added to the quirk file:
[USB\VID_273F&PID_1001]
GpioForUpdate=fake-gpio-chip,2,low
Since: 1.7.6
External Interface Access
This plugin requires ioctl GPIO_GET_CHIPINFO_IOCTL and GPIO_V2_GET_LINE_IOCTL
access on /dev/gpiochip* devices.