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add udev rules

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Travis Staton 2024-02-20 12:43:24 -05:00
parent 19a8570ec9
commit 462167cc93
1 changed files with 47 additions and 6 deletions
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53
rpi/default.nix
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@ -202,7 +202,7 @@ in
# linux kernel.
kernel = {
enable = true;
value = "u-boot-rpi-arm64.bin";
value = if cfg.uboot.enable then "u-boot-rpi-arm64.bin" else "kernel.img";
};
arm_64bit = {
enable = true;
@ -267,11 +267,52 @@ in
hardware.enableRedistributableFirmware = true;
services = {
udev.extraRules = ''
SUBSYSTEM=="dma_heap", GROUP="video", MODE="0660"
KERNEL=="gpiomem", GROUP="gpio", MODE="0660"
KERNEL=="gpiochip*", GROUP="gpio", MODE="0660"
'';
udev.extraRules =
let shell = "${pkgs.bash}/bin/bash";
in ''
# https://raw.githubusercontent.com/RPi-Distro/raspberrypi-sys-mods/master/etc.armhf/udev/rules.d/99-com.rules
SUBSYSTEM=="input", GROUP="input", MODE="0660"
SUBSYSTEM=="i2c-dev", GROUP="i2c", MODE="0660"
SUBSYSTEM=="spidev", GROUP="spi", MODE="0660"
SUBSYSTEM=="*gpiomem*", GROUP="gpio", MODE="0660"
SUBSYSTEM=="rpivid-*", GROUP="video", MODE="0660"
KERNEL=="vcsm-cma", GROUP="video", MODE="0660"
SUBSYSTEM=="dma_heap", GROUP="video", MODE="0660"
SUBSYSTEM=="gpio", GROUP="gpio", MODE="0660"
SUBSYSTEM=="gpio", KERNEL=="gpiochip*", ACTION=="add", PROGRAM="${shell} -c 'chgrp -R gpio /sys/class/gpio && chmod -R g=u /sys/class/gpio'"
SUBSYSTEM=="gpio", ACTION=="add", PROGRAM="${shell} -c 'chgrp -R gpio /sys%p && chmod -R g=u /sys%p'"
# PWM export results in a "change" action on the pwmchip device (not "add" of a new device), so match actions other than "remove".
SUBSYSTEM=="pwm", ACTION!="remove", PROGRAM="${shell} -c 'chgrp -R gpio /sys%p && chmod -R g=u /sys%p'"
KERNEL=="ttyAMA[0-9]*|ttyS[0-9]*", PROGRAM="${shell} -c '\
ALIASES=/proc/device-tree/aliases; \
TTYNODE=$$(readlink /sys/class/tty/%k/device/of_node | sed 's/base/:/' | cut -d: -f2); \
if [ -e $$ALIASES/bluetooth ] && [ $$TTYNODE/bluetooth = $$(strings $$ALIASES/bluetooth) ]; then \
echo 1; \
elif [ -e $$ALIASES/console ]; then \
if [ $$TTYNODE = $$(strings $$ALIASES/console) ]; then \
echo 0;\
else \
exit 1; \
fi \
elif [ $$TTYNODE = $$(strings $$ALIASES/serial0) ]; then \
echo 0; \
elif [ $$TTYNODE = $$(strings $$ALIASES/serial1) ]; then \
echo 1; \
else \
exit 1; \
fi \
'", SYMLINK+="serial%c"
ACTION=="add", SUBSYSTEM=="vtconsole", KERNEL=="vtcon1", RUN+="${shell} -c '\
if echo RPi-Sense FB | cmp -s /sys/class/graphics/fb0/name; then \
echo 0 > /sys$devpath/bind; \
fi; \
'"
'';
};
};