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https://github.com/theupriser/steamify-cachyos.git
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theupriser
7694c97d68
Kernels >= 7.2 keep the firmware's S4/S5 wake bit on GPIO pin 18, so the Steam Machine starts again right after powering off. Steam Machine support now builds a DKMS module (patches/steamify-fremont-poweroff.c) that clears it before power-off, for every kernel. The kernel pin is no longer ticked by default. Module sources and patches move to patches/, embedded by the single-file build.
58 lines
2.9 KiB
Bash
58 lines
2.9 KiB
Bash
#!/bin/bash
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# Part of "Steam Machine support": the Steam Machine powers off instead of
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# booting up again, on every kernel. Since Linux 7.2 ("pinctrl-amd: Don't
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# clear S4 wake bits at probe") the S4/S5 wake bit the firmware leaves set
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# on GPIO pin 18 stays set, and the machine starts again right after
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# powering off (the reason for the kernel pin). Valve's kernel clears it at
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# probe on Fremont, in a patch not meant for upstream, so CachyOS won't get
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# it. A small module (patches/steamify-fremont-poweroff.c) clears it right
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# before power-off; DKMS builds it for every kernel. On kernels that clear it themselves it does nothing.
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# Sourced by steamify.sh; not meant to be run on its own.
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POWEROFF_DKMS_NAME=steamify-fremont-poweroff
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POWEROFF_DKMS_VER=1
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POWEROFF_DKMS_SRC="/usr/src/$POWEROFF_DKMS_NAME-$POWEROFF_DKMS_VER"
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POWEROFF_MODULES_LOAD=/etc/modules-load.d/steamify-fremont-poweroff.conf
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poweroff_fix_installed() { [[ -f "$POWEROFF_DKMS_SRC/dkms.conf" && -f "$POWEROFF_MODULES_LOAD" ]]; }
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poweroff_fix_enable() {
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detect_valve_fremont || return 0
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local tmp k
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if ! pacman -Q dkms >/dev/null 2>&1; then
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sudo pacman -S --needed --noconfirm dkms || { err "Installing dkms failed."; return 1; }
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fi
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install_kernel_headers || return 1
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tmp="$(mktemp -d)"
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patch_file "$POWEROFF_DKMS_NAME.c" > "$tmp/$POWEROFF_DKMS_NAME.c"
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echo "obj-m += $POWEROFF_DKMS_NAME.o" >"$tmp/Makefile"
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printf '%s\n' "# Written by Steamify: the Steam Machine powers off instead of booting up again." \
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"PACKAGE_NAME=\"$POWEROFF_DKMS_NAME\"" "PACKAGE_VERSION=\"$POWEROFF_DKMS_VER\"" \
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"BUILT_MODULE_NAME[0]=\"$POWEROFF_DKMS_NAME\"" 'DEST_MODULE_LOCATION[0]="/updates/dkms"' \
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'AUTOINSTALL="yes"' >"$tmp/dkms.conf"
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sudo dkms remove "$POWEROFF_DKMS_NAME/$POWEROFF_DKMS_VER" --all >/dev/null 2>&1
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sudo rm -rf "$POWEROFF_DKMS_SRC"
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sudo install -d "$POWEROFF_DKMS_SRC" &&
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sudo install -m644 "$tmp"/{"$POWEROFF_DKMS_NAME.c",Makefile,dkms.conf} "$POWEROFF_DKMS_SRC/"
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rm -rf "$tmp"
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sudo dkms add "$POWEROFF_DKMS_NAME/$POWEROFF_DKMS_VER" >/dev/null ||
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{ err "Adding the power-off fix to DKMS failed."; return 1; }
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for k in /usr/lib/modules/*/build; do
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k="$(basename "$(dirname "$k")")"
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info "Building the power-off fix for $k..."
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sudo dkms install "$POWEROFF_DKMS_NAME/$POWEROFF_DKMS_VER" -k "$k" >/dev/null ||
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warn "Building the power-off fix for $k failed; with that kernel it may start again after shutting down."
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done
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echo "$POWEROFF_DKMS_NAME" | sudo tee "$POWEROFF_MODULES_LOAD" >/dev/null
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sudo modprobe "$POWEROFF_DKMS_NAME" 2>/dev/null
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return 0
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}
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poweroff_fix_disable() {
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sudo rm -f "$POWEROFF_MODULES_LOAD"
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sudo modprobe -r "$POWEROFF_DKMS_NAME" 2>/dev/null
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[[ -d "$POWEROFF_DKMS_SRC" ]] || return 0
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sudo dkms remove "$POWEROFF_DKMS_NAME/$POWEROFF_DKMS_VER" --all >/dev/null 2>&1
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sudo rm -rf "$POWEROFF_DKMS_SRC"
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}
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