watt: turn into a library

watt/config.toml

@@ -0,0 +1,114 @@
+# Watt Default Configuration
+
+# Rules are evaluated by priority (higher number => higher priority).
+# Each rule can specify conditions and actions for CPU and power management.
+
+# Emergency thermal protection (highest priority).
+[[rule]]
+if       = { value = "$cpu-temperature", is-more-than = 85.0 }
+priority = 100
+
+cpu.energy-performance-preference = "power"
+cpu.frequency-mhz-maximum         = 2000
+cpu.governor                      = "powersave"
+cpu.turbo                         = false
+
+# Critical battery preservation.
+[[rule]]
+if.all   = [ "?discharging", { value = "%power-supply-charge", is-less-than = 0.3 } ]
+priority = 90
+
+cpu.energy-performance-preference = "power"
+cpu.frequency-mhz-maximum         = 800         # More aggressive below critical threshold.
+cpu.governor                      = "powersave"
+cpu.turbo                         = false
+power.platform-profile            = "low-power"
+
+# High performance mode for sustained high load.
+[[rule]]
+if.all = [
+  { value = "%cpu-usage", is-more-than = 0.8 },
+  { value = "$cpu-idle-seconds", is-less-than = 30.0 },
+  { value = "$cpu-temperature", is-less-than = 75.0 },
+]
+priority = 80
+
+cpu.energy-performance-preference = "performance"
+cpu.governor                      = "performance"
+cpu.turbo                         = true
+
+# Performance mode when not discharging.
+[[rule]]
+if.all = [
+  { not = "?discharging" },
+  { value = "%cpu-usage", is-more-than = 0.1 },
+  { value = "$cpu-temperature", is-less-than = 80.0 },
+]
+priority = 70
+
+cpu.energy-performance-bias       = "balance_performance"
+cpu.energy-performance-preference = "performance"
+cpu.governor                      = "performance"
+cpu.turbo                         = true
+
+# Moderate performance for medium load.
+[[rule]]
+if.all = [
+  { value = "%cpu-usage", is-more-than = 0.4 },
+  { value = "%cpu-usage", is-less-than = 0.8 },
+]
+priority = 60
+
+cpu.energy-performance-preference = "balance_performance"
+cpu.governor                      = "schedutil"
+
+# Power saving during low activity.
+[[rule]]
+if.all = [
+  { value = "%cpu-usage", is-less-than = 0.2 },
+  { value = "$cpu-idle-seconds", is-more-than = 60.0 },
+]
+priority = 50
+
+cpu.energy-performance-preference = "power"
+cpu.governor                      = "powersave"
+cpu.turbo                         = false
+
+# Extended idle power optimization.
+[[rule]]
+if       = { value = "$cpu-idle-seconds", is-more-than = 300.0 }
+priority = 40
+
+cpu.energy-performance-preference = "power"
+cpu.frequency-mhz-maximum         = 1600
+cpu.governor                      = "powersave"
+cpu.turbo                         = false
+
+# Battery conservation when discharging.
+[[rule]]
+if.all   = [ "?discharging", { value = "%power-supply-charge", is-less-than = 0.5 } ]
+priority = 30
+
+cpu.energy-performance-preference = "power"
+cpu.frequency-mhz-maximum         = 2000
+cpu.governor                      = "powersave"
+cpu.turbo                         = false
+power.platform-profile            = "low-power"
+
+# General battery mode.
+[[rule]]
+if       = "?discharging"
+priority = 20
+
+cpu.energy-performance-bias       = "balance_power"
+cpu.energy-performance-preference = "power"
+cpu.frequency-mhz-maximum         = 1800
+cpu.frequency-mhz-minimum         = 200
+cpu.governor                      = "powersave"
+cpu.turbo                         = false
+
+# Balanced performance for general use. Default fallback rule.
+[[rule]]
+cpu.energy-performance-preference = "balance_performance"
+cpu.governor                      = "schedutil"
+priority                          = 0