feat(install): TLP for laptops + Framework 13 firmware trim

TLP installs and enables on any machine with a battery (BAT* present), with an /etc/tlp.d/01-custom.conf pinning the CPU energy/perf split per power source; systemd-rfkill gets masked per TLP's docs. The firmware trim is DMI-gated to Framework Intel machines, where the hardware set is known: keep linux-firmware-intel and -atheros, remove the meta and the other ten subpackages (~600MB). Applied live on velox first — TLP 1.10.1 active, wifi up after the trim, initramfs rebuilt clean.

1 files changed, 43 insertions, 0 deletions

diff --git a/archsetup b/archsetup
index dbc0b16..19d79dc 100755
--- a/archsetup
+++ b/archsetup
@@ -2365,6 +2365,49 @@ HandleLidSwitchExternalPower=ignore
 HandleLidSwitchDocked=ignore
 EOF
 
+    # TLP power management — laptops only (battery present). Manages wifi,
+    # USB, PCIe, and CPU power policy on AC/battery transitions. systemd-rfkill
+    # is masked per TLP's docs (it fights TLP's radio-state handling).
+    if ls /sys/class/power_supply/BAT* &>/dev/null; then
+        pacman_install tlp
+        action="writing TLP custom config" && display "task" "$action"
+        mkdir -p /etc/tlp.d
+        cat << 'EOF' > /etc/tlp.d/01-custom.conf
+# Custom TLP overrides (tuned on a Framework 13 Intel; generic for any laptop).
+# Defaults are sane; these pin the CPU energy/perf split explicitly.
+CPU_ENERGY_PERF_POLICY_ON_AC=balance_performance
+CPU_ENERGY_PERF_POLICY_ON_BAT=power
+PLATFORM_PROFILE_ON_AC=balanced
+PLATFORM_PROFILE_ON_BAT=low-power
+# Battery longevity: cap charge at 80% where the EC supports it.
+# Off by default — uncomment (and match the BAT name) to enable.
+#STOP_CHARGE_THRESH_BAT1=80
+EOF
+        action="enabling TLP service" && display "task" "$action"
+        systemctl enable tlp.service >> "$logfile" 2>&1 || error_warn "$action" "$?"
+        systemctl mask systemd-rfkill.service systemd-rfkill.socket >> "$logfile" 2>&1 || \
+            error_warn "masking systemd-rfkill for TLP" "$?"
+    fi
+
+    # Firmware trim — Framework 13 Intel only (matched by DMI), where the
+    # hardware set is known: i915 graphics (linux-firmware-intel) and ath9k
+    # wifi (linux-firmware-atheros, firmware-free driver but kept for safety).
+    # Saves ~600MB. The meta package needs -Rdd because mkinitcpio-firmware
+    # declares a dependency on it; the dangling dep is cosmetic and the
+    # subsequent mkinitcpio warnings cover hardware this machine doesn't have.
+    if grep -qi "framework" /sys/class/dmi/id/product_name 2>/dev/null && \
+       grep -qi "intel" /proc/cpuinfo 2>/dev/null; then
+        action="trimming firmware packages to Framework 13 hardware" && display "task" "$action"
+        pacman -Rdd --noconfirm \
+            linux-firmware linux-firmware-amdgpu linux-firmware-broadcom \
+            linux-firmware-cirrus linux-firmware-liquidio linux-firmware-mediatek \
+            linux-firmware-mellanox linux-firmware-nfp linux-firmware-nvidia \
+            linux-firmware-other linux-firmware-qlogic linux-firmware-radeon \
+            linux-firmware-realtek >> "$logfile" 2>&1 || error_warn "$action" "$?"
+        action="rebuilding initramfs after firmware trim" && display "task" "$action"
+        mkinitcpio -P >> "$logfile" 2>&1 || error_warn "$action" "$?"
+    fi
+
     # GRUB: reset timeouts, adjust log levels, larger menu for HiDPI screens, and show splashscreen
     # Note: nvme.noacpi=1 disables NVMe ACPI power management to prevent freezes on some drives.
     # Safe to keep on newer drives (minor power cost), remove if battery life is critical.