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ae88d2ff59
Many users are reluctant to use libgpiod instead of the deprecated /sys/class/gpio interface. The gpiod-sysfs-proxy project aims at making the transition easier by implementing a compatibility layer in user-space using FUSE and python3-gpiod. This way we can eat the cookie by disabling the sysfs ABI and have the users have it too by sticking to their existing scripts. The project itself is a very simple setuptools-based python package but the recipe is quite complex due to comprehensive distro integration. By default we use /run/gpio as mountpoint. For full backward compatibility with the kernel interface, the user must explicitly add the 'sys-class-mount' switch to PACKAGECONFIG. We do this because, depending on whether CONFIG_GPIO_SYSFS Kconfig option is enabled, /sys/class/gpio will either be non-empty or not exist at all. In the latter case, we need to somehow create the /sys/class/gpio and, since user-space is not allowed to mkdir() inside sysfs, we use overlayfs for that. As this is rather non-standard, we want the user to be aware of this. We support both systemd and sys V init managers. We also provide a ptest package which uses an external gpio-sysfs-compat-tests script. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Signed-off-by: Khem Raj <raj.khem@gmail.com>
23 lines
731 B
Plaintext
23 lines
731 B
Plaintext
# We have a conf and classes directory, add to BBPATH
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BBPATH .= ":${LAYERDIR}"
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# We have recipes-* directories, add to BBFILES
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BBFILES += "${LAYERDIR}/recipes-*/*/*.bb \
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${LAYERDIR}/recipes-*/*/*.bbappend"
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BBFILE_COLLECTIONS += "filesystems-layer"
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BBFILE_PATTERN_filesystems-layer = "^${LAYERDIR}/"
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BBFILE_PRIORITY_filesystems-layer = "5"
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# This should only be incremented on significant changes that will
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# cause compatibility issues with other layers
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LAYERVERSION_filesystems-layer = "1"
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LAYERDEPENDS_filesystems-layer = "core openembedded-layer networking-layer"
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LAYERSERIES_COMPAT_filesystems-layer = "styhead walnascar"
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BBFILES_DYNAMIC += " \
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meta-python:${LAYERDIR}/dynamic-layers/meta-python/recipes-*/*/*.bb \
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"
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