Improve generic support, add Framework 13 AMD support for test platform (ryzenadj v0.14 update not included)

backend/limits_core/src/json_v2/base.rs

@@ -90,9 +90,10 @@ impl Default for Base {
                         gpu: super::GpuLimit {
                             provider: super::GpuLimitType::GenericAMD,
                             limits: super::GenericGpuLimit {
-                                fast_ppt: Some(super::RangeLimit { min: Some(1_000_000), max: Some(25_000_000) }),
+                                fast_ppt: Some(super::RangeLimit { min: Some(1_000), max: Some(25_000) }),
-                                slow_ppt: Some(super::RangeLimit { min: Some(1_000_000), max: Some(25_000_000) }),
+                                slow_ppt: Some(super::RangeLimit { min: Some(1_000), max: Some(25_000) }),
-                                ppt_step: Some(1_000_000),
+                                ppt_step: Some(1_000),
+                                ppt_divisor: Some(1_000),
                                 clock_min: Some(super::RangeLimit { min: Some(400), max: Some(1100) }),
                                 clock_max: Some(super::RangeLimit { min: Some(400), max: Some(1100) }),
                                 clock_step: Some(100),
@@ -131,9 +132,10 @@ impl Default for Base {
                         gpu: super::GpuLimit {
                             provider: super::GpuLimitType::GenericAMD,
                             limits: super::GenericGpuLimit {
-                                fast_ppt: Some(super::RangeLimit { min: Some(1_000_000), max: Some(25_000_000) }),
+                                fast_ppt: Some(super::RangeLimit { min: Some(1_000), max: Some(25_000) }),
-                                slow_ppt: Some(super::RangeLimit { min: Some(1_000_000), max: Some(25_000_000) }),
+                                slow_ppt: Some(super::RangeLimit { min: Some(1_000), max: Some(25_000) }),
-                                ppt_step: Some(1_000_000),
+                                ppt_step: Some(1_000),
+                                ppt_divisor: Some(1_000),
                                 clock_min: Some(super::RangeLimit { min: Some(400), max: Some(1600) }),
                                 clock_max: Some(super::RangeLimit { min: Some(400), max: Some(1600) }),
                                 clock_step: Some(100),
@@ -172,9 +174,10 @@ impl Default for Base {
                         gpu: super::GpuLimit {
                             provider: super::GpuLimitType::GenericAMD,
                             limits: super::GenericGpuLimit {
-                                fast_ppt: Some(super::RangeLimit { min: Some(1_000_000), max: Some(28_000_000) }),
+                                fast_ppt: Some(super::RangeLimit { min: Some(1_000), max: Some(28_000) }),
-                                slow_ppt: Some(super::RangeLimit { min: Some(1_000_000), max: Some(28_000_000) }),
+                                slow_ppt: Some(super::RangeLimit { min: Some(1_000), max: Some(28_000) }),
-                                ppt_step: Some(1_000_000),
+                                ppt_step: Some(1_000),
+                                ppt_divisor: Some(1_000),
                                 clock_min: Some(super::RangeLimit { min: Some(400), max: Some(2200) }),
                                 clock_max: Some(super::RangeLimit { min: Some(400), max: Some(2200) }),
                                 clock_step: Some(100),
@@ -213,9 +216,10 @@ impl Default for Base {
                         gpu: super::GpuLimit {
                             provider: super::GpuLimitType::GenericAMD,
                             limits: super::GenericGpuLimit {
-                                fast_ppt: Some(super::RangeLimit { min: Some(1_000_000), max: Some(28_000_000) }),
+                                fast_ppt: Some(super::RangeLimit { min: Some(1_000), max: Some(28_000) }),
-                                slow_ppt: Some(super::RangeLimit { min: Some(1_000_000), max: Some(28_000_000) }),
+                                slow_ppt: Some(super::RangeLimit { min: Some(1_000), max: Some(28_000) }),
-                                ppt_step: Some(1_000_000),
+                                ppt_step: Some(1_000),
+                                ppt_divisor: Some(1_000),
                                 clock_min: Some(super::RangeLimit { min: Some(400), max: Some(2200) }),
                                 clock_max: Some(super::RangeLimit { min: Some(400), max: Some(2200) }),
                                 clock_step: Some(100),
@@ -228,6 +232,48 @@ impl Default for Base {
                         }
                     }
                 },
+                super::Config {
+                    name: "AMD R7 7840U".to_owned(),
+                    conditions: super::Conditions {
+                        dmi: None,
+                        cpuinfo: Some("model name\\s+: AMD Ryzen 7 7840U( w\\/ Radeon  780M Graphics)?\n".to_owned()),
+                        os: None,
+                        command: None,
+                        file_exists: None,
+                    },
+                    limits: super::Limits {
+                        cpu: super::CpuLimit {
+                            provider: super::CpuLimitType::GenericAMD,
+                            limits: super::GenericCpusLimit {
+                                cpus: vec![
+                                    super::GenericCpuLimit {
+                                        clock_min: Some(super::RangeLimit { min: Some(400), max: Some(5100) }),
+                                        clock_max: Some(super::RangeLimit { min: Some(400), max: Some(5100) }),
+                                        clock_step: Some(100),
+                                        skip_resume_reclock: false,
+                                    }; 16], // 8 cores with SMTx2
+                                global_governors: true,
+                            }
+                        },
+                        gpu: super::GpuLimit {
+                            provider: super::GpuLimitType::GenericAMD,
+                            limits: super::GenericGpuLimit {
+                                fast_ppt: Some(super::RangeLimit { min: Some(1_000), max: Some(53_000) }),
+                                slow_ppt: Some(super::RangeLimit { min: Some(1_000), max: Some(43_000) }),
+                                ppt_step: Some(1_000),
+                                ppt_divisor: Some(1_000),
+                                clock_min: None,
+                                clock_max: None,
+                                clock_step: None,
+                                ..Default::default()
+                            }
+                        },
+                        battery: super::Limit {
+                            provider: super::BatteryLimitType::Generic,
+                            limits: super::GenericBatteryLimit::default_for(super::BatteryLimitType::Generic),
+                        }
+                    }
+                },
                 super::Config {
                     name: "Fallback".to_owned(),
                     conditions: super::Conditions {

backend/limits_srv/pt_limits_v2.json

@@ -11,7 +11,7 @@
       },
       "limits": {
         "cpu": {
-          "provider": "SteamDeckAdvance",
+          "provider": "GabeBoyAdvance",
           "limits": {
             "cpus": [
               {
@@ -115,7 +115,7 @@
           }
         },
         "gpu": {
-          "provider": "SteamDeckAdvance",
+          "provider": "GabeBoyAdvance",
           "limits": {
             "fast_ppt": {
               "min": 1000000,
@@ -145,7 +145,7 @@
           }
         },
         "battery": {
-          "provider": "SteamDeckAdvance",
+          "provider": "GabeBoyAdvance",
           "limits": {
             "charge_rate": {
               "min": 250,
@@ -176,7 +176,7 @@
       },
       "limits": {
         "cpu": {
-          "provider": "SteamDeck",
+          "provider": "GabeBoy",
           "limits": {
             "cpus": [
               {
@@ -280,7 +280,7 @@
           }
         },
         "gpu": {
-          "provider": "SteamDeck",
+          "provider": "GabeBoy",
           "limits": {
             "fast_ppt": {
               "min": 1000000,
@@ -310,7 +310,7 @@
           }
         },
         "battery": {
-          "provider": "SteamDeck",
+          "provider": "GabeBoy",
           "limits": {
             "charge_rate": {
               "min": 250,
@@ -400,17 +400,17 @@
           "provider": "GenericAMD",
           "limits": {
             "fast_ppt": {
-              "min": 1000000,
+              "min": 1000,
-              "max": 25000000
+              "max": 25000
             },
             "fast_ppt_default": null,
             "slow_ppt": {
-              "min": 1000000,
+              "min": 1000,
-              "max": 25000000
+              "max": 25000
             },
             "slow_ppt_default": null,
-            "ppt_divisor": null,
+            "ppt_divisor": 1000,
-            "ppt_step": 1000000,
+            "ppt_step": 1000,
             "tdp": null,
             "tdp_boost": null,
             "tdp_step": null,
@@ -603,17 +603,17 @@
           "provider": "GenericAMD",
           "limits": {
             "fast_ppt": {
-              "min": 1000000,
+              "min": 1000,
-              "max": 25000000
+              "max": 25000
             },
             "fast_ppt_default": null,
             "slow_ppt": {
-              "min": 1000000,
+              "min": 1000,
-              "max": 25000000
+              "max": 25000
             },
             "slow_ppt_default": null,
-            "ppt_divisor": null,
+            "ppt_divisor": 1000,
-            "ppt_step": 1000000,
+            "ppt_step": 1000,
             "tdp": null,
             "tdp_boost": null,
             "tdp_step": null,
@@ -854,17 +854,17 @@
           "provider": "GenericAMD",
           "limits": {
             "fast_ppt": {
-              "min": 1000000,
+              "min": 1000,
-              "max": 28000000
+              "max": 28000
             },
             "fast_ppt_default": null,
             "slow_ppt": {
-              "min": 1000000,
+              "min": 1000,
-              "max": 28000000
+              "max": 28000
             },
             "slow_ppt_default": null,
-            "ppt_divisor": null,
+            "ppt_divisor": 1000,
-            "ppt_step": 1000000,
+            "ppt_step": 1000,
             "tdp": null,
             "tdp_boost": null,
             "tdp_step": null,
@@ -1105,17 +1105,17 @@
           "provider": "GenericAMD",
           "limits": {
             "fast_ppt": {
-              "min": 1000000,
+              "min": 1000,
-              "max": 28000000
+              "max": 28000
             },
             "fast_ppt_default": null,
             "slow_ppt": {
-              "min": 1000000,
+              "min": 1000,
-              "max": 28000000
+              "max": 28000
             },
             "slow_ppt_default": null,
-            "ppt_divisor": null,
+            "ppt_divisor": 1000,
-            "ppt_step": 1000000,
+            "ppt_step": 1000,
             "tdp": null,
             "tdp_boost": null,
             "tdp_step": null,
@@ -1142,6 +1142,251 @@
         }
       }
     },
+    {
+      "name": "AMD R7 7840U",
+      "conditions": {
+        "dmi": null,
+        "cpuinfo": "model name\\s+: AMD Ryzen 7 7840U( w\\/ Radeon  780M Graphics)?\n",
+        "os": null,
+        "command": null,
+        "file_exists": null
+      },
+      "limits": {
+        "cpu": {
+          "provider": "GenericAMD",
+          "limits": {
+            "cpus": [
+              {
+                "clock_min": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_max": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_step": 100,
+                "skip_resume_reclock": false
+              },
+              {
+                "clock_min": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_max": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_step": 100,
+                "skip_resume_reclock": false
+              },
+              {
+                "clock_min": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_max": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_step": 100,
+                "skip_resume_reclock": false
+              },
+              {
+                "clock_min": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_max": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_step": 100,
+                "skip_resume_reclock": false
+              },
+              {
+                "clock_min": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_max": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_step": 100,
+                "skip_resume_reclock": false
+              },
+              {
+                "clock_min": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_max": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_step": 100,
+                "skip_resume_reclock": false
+              },
+              {
+                "clock_min": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_max": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_step": 100,
+                "skip_resume_reclock": false
+              },
+              {
+                "clock_min": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_max": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_step": 100,
+                "skip_resume_reclock": false
+              },
+              {
+                "clock_min": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_max": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_step": 100,
+                "skip_resume_reclock": false
+              },
+              {
+                "clock_min": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_max": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_step": 100,
+                "skip_resume_reclock": false
+              },
+              {
+                "clock_min": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_max": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_step": 100,
+                "skip_resume_reclock": false
+              },
+              {
+                "clock_min": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_max": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_step": 100,
+                "skip_resume_reclock": false
+              },
+              {
+                "clock_min": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_max": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_step": 100,
+                "skip_resume_reclock": false
+              },
+              {
+                "clock_min": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_max": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_step": 100,
+                "skip_resume_reclock": false
+              },
+              {
+                "clock_min": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_max": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_step": 100,
+                "skip_resume_reclock": false
+              },
+              {
+                "clock_min": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_max": {
+                  "min": 400,
+                  "max": 5100
+                },
+                "clock_step": 100,
+                "skip_resume_reclock": false
+              }
+            ],
+            "global_governors": true
+          }
+        },
+        "gpu": {
+          "provider": "GenericAMD",
+          "limits": {
+            "fast_ppt": {
+              "min": 1000,
+              "max": 53000
+            },
+            "fast_ppt_default": null,
+            "slow_ppt": {
+              "min": 1000,
+              "max": 43000
+            },
+            "slow_ppt_default": null,
+            "ppt_divisor": 1000,
+            "ppt_step": 1000,
+            "tdp": null,
+            "tdp_boost": null,
+            "tdp_step": null,
+            "clock_min": null,
+            "clock_max": null,
+            "clock_step": null,
+            "skip_resume_reclock": false
+          }
+        },
+        "battery": {
+          "provider": "Generic",
+          "limits": {
+            "charge_rate": null,
+            "charge_modes": [],
+            "charge_limit": null,
+            "extra_readouts": false
+          }
+        }
+      }
+    },
     {
       "name": "Fallback",
       "conditions": {

backend/src/main.rs

@@ -25,6 +25,7 @@ fn main() -> Result<(), ()> {
         .join(PACKAGE_NAME.to_owned() + ".log");
     #[cfg(not(debug_assertions))]
     let log_filepath = std::path::Path::new("/tmp").join(format!("{}.log", PACKAGE_NAME));
+    println!("Logging to: {:?}", log_filepath);
     #[cfg(debug_assertions)]
     let old_log_filepath = usdpl_back::api::dirs::home()
         .unwrap_or_else(|| "/tmp/".into())
@@ -46,12 +47,11 @@ fn main() -> Result<(), ()> {
             LevelFilter::Info
         },
         Default::default(),
-        std::fs::File::create(&log_filepath).unwrap(),
+        std::fs::File::create(&log_filepath).expect("Failed to create log file"),
         //std::fs::File::create("/home/deck/powertools-rs.log").unwrap(),
     )
     .unwrap();
     log::debug!("Logging to: {:?}.", log_filepath);
-    println!("Logging to: {:?}", log_filepath);
     log::info!("Starting back-end ({} v{})", PACKAGE_NAME, PACKAGE_VERSION);
     println!("Starting back-end ({} v{})", PACKAGE_NAME, PACKAGE_VERSION);
     log::info!(

backend/src/settings/generic/battery.rs

@@ -1,7 +1,7 @@
 use std::convert::Into;
 
 use limits_core::json_v2::GenericBatteryLimit;
-use sysfuss::SysEntity;
+use sysfuss::{SysEntity, SysEntityAttributesExt};
 
 use crate::persist::BatteryJson;
 use crate::settings::{TBattery, ProviderBuilder};
@@ -27,7 +27,7 @@ impl Into<BatteryJson> for Battery {
 }
 
 impl Battery {
-    fn read_f64<P: AsRef<std::path::Path>>(path: P) -> Result<f64, SettingError> {
+    /*fn read_f64<P: AsRef<std::path::Path>>(path: P) -> Result<f64, SettingError> {
         let path = path.as_ref();
         match usdpl_back::api::files::read_single::<_, f64, _>(path) {
             Err(e) => Err(SettingError {
@@ -38,13 +38,14 @@ impl Battery {
             // so convert this to mA for consistency
             Ok(val) => Ok(val / 1000.0),
         }
-    }
+    }*/
 
     fn find_psu_sysfs(root: Option<impl AsRef<std::path::Path>>) -> sysfuss::PowerSupplyPath {
         let root = crate::settings::util::root_or_default_sysfs(root);
         match root.power_supply(crate::settings::util::always_satisfied) {
-            Ok(mut iter) => {
+            Ok(iter) => {
-                iter.next()
+                iter.filter(|x| x.name().is_ok_and(|name| name.starts_with("BAT")))
+                    .next()
                     .unwrap_or_else(|| {
                         log::error!("Failed to find generic battery power_supply in sysfs (no results), using naive fallback");
                         root.power_supply_by_name("BAT0")
@@ -56,6 +57,28 @@ impl Battery {
             }
         }
     }
+
+    fn get_design_voltage(&self) -> Option<f64> {
+        match self.sysfs.attribute::<f64, _>(sysfuss::PowerSupplyAttribute::VoltageMax) {
+            Ok(x) => Some(x/1000000.0),
+            Err(e) => {
+                log::debug!("get_design_voltage voltage_max err: {}", e);
+                match sysfuss::SysEntityRawExt::attribute::<_, f64, _>(&self.sysfs, "voltage_min_design".to_owned()) { // Framework 13 AMD
+                    Ok(x) => Some(x/1000000.0),
+                    Err(e) => {
+                        log::debug!("get_design_voltage voltage_min_design err: {}", e);
+                        match self.sysfs.attribute::<f64, _>(sysfuss::PowerSupplyAttribute::VoltageMin) {
+                            Ok(x) => Some(x/1000000.0),
+                            Err(e) => {
+                                log::debug!("get_design_voltage voltage_min err: {}", e);
+                                None
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
 }
 
 impl ProviderBuilder<BatteryJson, GenericBatteryLimit> for Battery {
@@ -124,37 +147,55 @@ impl TBattery for Battery {
     }
 
     fn read_charge_full(&self) -> Option<f64> {
-        match Self::read_f64("/sys/class/power_supply/BAT0/energy_full") {
+        if let Some(battery_voltage) = self.get_design_voltage() {
-            Ok(x) => Some(x),
+            match self.sysfs.attribute::<f64, _>(sysfuss::PowerSupplyAttribute::ChargeFull) {
-            Err(e) => {
+                Ok(x) => Some(x/1000000.0 * battery_voltage),
-                log::warn!("read_charge_full err: {}", e.msg);
+                Err(e) => {
-                None
+                    log::warn!("read_charge_full err: {}", e);
+                    None
+                }
             }
+        } else {
+            None
         }
     }
 
     fn read_charge_now(&self) -> Option<f64> {
-        match Self::read_f64("/sys/class/power_supply/BAT0/energy_now") {
+        if let Some(battery_voltage) = self.get_design_voltage() {
-            Ok(x) => Some(x),
+            match self.sysfs.attribute::<f64, _>(sysfuss::PowerSupplyAttribute::ChargeNow) {
-            Err(e) => {
+                Ok(x) => Some(x/1000000.0 * battery_voltage),
-                log::warn!("read_charge_now err: {}", e.msg);
+                Err(e) => {
-                None
+                    log::warn!("read_charge_now err: {}", e);
+                    None
+                }
             }
+        } else {
+            None
         }
     }
 
     fn read_charge_design(&self) -> Option<f64> {
-        match Self::read_f64("/sys/class/power_supply/BAT0/energy_design") {
+        if let Some(battery_voltage) = self.get_design_voltage() {
-            Ok(x) => Some(x),
+            match self.sysfs.attribute::<f64, _>(sysfuss::PowerSupplyAttribute::ChargeFullDesign) {
-            Err(e) => {
+                Ok(x) => Some(x/1000000.0 * battery_voltage),
-                log::warn!("read_charge_design err: {}", e.msg);
+                Err(e) => {
-                None
+                    log::warn!("read_charge_design err: {}", e);
+                    None
+                }
             }
+        } else {
+            None
         }
     }
 
     fn read_current_now(&self) -> Option<f64> {
-        None
+        match self.sysfs.attribute::<f64, _>(sysfuss::PowerSupplyAttribute::CurrentNow) {
+            Ok(x) => Some(x/1000.0), // expects mA, reads uA
+            Err(e) => {
+                log::warn!("read_current_now err: {}", e);
+                None
+            }
+        }
     }
 
     fn read_charge_power(&self) -> Option<f64> {
@@ -164,6 +205,13 @@ impl TBattery for Battery {
     fn charge_limit(&mut self, _limit: Option<f64>) {}
 
     fn get_charge_limit(&self) -> Option<f64> {
+        /*match self.sysfs.attribute::<f64, _>(sysfuss::PowerSupplyAttribute::ChargeControlLimit) {
+            Ok(x) => Some(x/1000.0),
+            Err(e) => {
+                log::warn!("read_charge_design err: {}", e);
+                None
+            }
+        }*/
         None
     }
 

backend/src/settings/generic/cpu.rs

@@ -218,6 +218,13 @@ pub struct Cpu {
     }
 }*/
 
+impl Cpu {
+    #[inline]
+    fn current_governor(index: usize) -> String {
+        usdpl_back::api::files::read_single(cpu_governor_path(index)).unwrap_or_else(|_| "schedutil".to_owned())
+    }
+}
+
 impl AsRef<Cpu> for Cpu {
     #[inline]
     fn as_ref(&self) -> &Cpu {
@@ -237,7 +244,7 @@ impl FromGenericCpuInfo for Cpu {
     fn from_limits(cpu_index: usize, limits: GenericCpuLimit) -> Self {
         Self {
             online: true,
-            governor: "schedutil".to_owned(),
+            governor: Self::current_governor(cpu_index),
             clock_limits: None,
             limits,
             index: cpu_index,

backend/src/settings/generic/gpu.rs

@@ -15,7 +15,7 @@ pub struct Gpu {
     pub fast_ppt: Option<u64>,
     pub slow_ppt: Option<u64>,
     pub clock_limits: Option<MinMax<u64>>,
-    limits: GenericGpuLimit,
+    pub limits: GenericGpuLimit,
     sysfs: BasicEntityPath,
 }
 
@@ -122,13 +122,23 @@ impl TGpu for Gpu {
                 .limits
                 .fast_ppt
                 .clone()
-                .map(|x| RangeLimit::new(x.min.unwrap_or(0), x.max.unwrap_or(15_000_000))),
+                .map(|x| RangeLimit::new(x.min.unwrap_or(0), x.max.unwrap_or(15)))
+                .map(|mut x| if let Some(ppt_divisor) = self.limits.ppt_divisor {
+                    x.min /= ppt_divisor;
+                    x.max /= ppt_divisor;
+                    x
+                } else {x}),
             slow_ppt_limits: self
                 .limits
                 .slow_ppt
                 .clone()
-                .map(|x| RangeLimit::new(x.min.unwrap_or(0), x.max.unwrap_or(15_000_000))),
+                .map(|x| RangeLimit::new(x.min.unwrap_or(0), x.max.unwrap_or(15)))
-            ppt_step: self.limits.ppt_step.unwrap_or(1_000_000),
+                .map(|mut x| if let Some(ppt_divisor) = self.limits.ppt_divisor {
+                    x.min /= ppt_divisor;
+                    x.max /= ppt_divisor;
+                    x
+                } else {x}),
+            ppt_step: self.limits.ppt_step.unwrap_or(1),
             tdp_limits: self
                 .limits
                 .tdp
@@ -161,7 +171,8 @@ impl TGpu for Gpu {
 
     fn ppt(&mut self, fast: Option<u64>, slow: Option<u64>) {
         if let Some(fast_lims) = &self.limits.fast_ppt {
-            self.fast_ppt = fast.map(|x| {
+            self.fast_ppt = fast.map(|x| if let Some(ppt_divisor) = self.limits.ppt_divisor { x * ppt_divisor } else { x })
+            .map(|x| {
                 x.clamp(
                     fast_lims.min.unwrap_or(0),
                     fast_lims.max.unwrap_or(u64::MAX),
@@ -169,7 +180,8 @@ impl TGpu for Gpu {
             });
         }
         if let Some(slow_lims) = &self.limits.slow_ppt {
-            self.slow_ppt = slow.map(|x| {
+            self.slow_ppt = slow.map(|x| if let Some(ppt_divisor) = self.limits.ppt_divisor { x * ppt_divisor } else { x })
+            .map(|x| {
                 x.clamp(
                     slow_lims.min.unwrap_or(0),
                     slow_lims.max.unwrap_or(u64::MAX),

backend/src/settings/generic_amd/gpu.rs

@@ -7,9 +7,40 @@ use crate::settings::MinMax;
 use crate::settings::{TGpu, ProviderBuilder};
 use crate::settings::{OnResume, OnSet, SettingError, SettingVariant};
 
+fn msg_or_err<D: std::fmt::Display, E: std::fmt::Display>(output: &mut String, msg: &str, result: Result<D, E>) {
+    use std::fmt::Write;
+    match result {
+        Ok(val) => writeln!(output, "{}: {}", msg, val).unwrap(),
+        Err(e) => writeln!(output, "{} failed: {}", msg, e).unwrap(),
+    }
+}
+
+fn log_capabilities(ryzenadj: &RyzenAdj) {
+    log::info!("RyzenAdj v{}.{}.{}", libryzenadj::libryzenadj_sys::RYZENADJ_REVISION_VER, libryzenadj::libryzenadj_sys::RYZENADJ_MAJOR_VER, libryzenadj::libryzenadj_sys::RYZENADJ_MINIOR_VER);
+    if let Some(x) = ryzenadj.get_init_table_err() {
+        log::warn!("RyzenAdj table init error: {}", x);
+    }
+    let mut log_msg = String::new();
+    msg_or_err(&mut log_msg, "bios version", ryzenadj.get_bios_if_ver());
+    msg_or_err(&mut log_msg, "refresh", ryzenadj.refresh().map(|_| "success"));
+    msg_or_err(&mut log_msg, "CPU family", ryzenadj.get_cpu_family().map(|fam| {
+        let fam_dbg = format!("{:?}", fam);
+        format!("{} (#{})", fam_dbg, fam as i32)
+    }));
+    msg_or_err(&mut log_msg, "get_fast_value (PPT)", ryzenadj.get_fast_value());
+    msg_or_err(&mut log_msg, "get_slow_value (PPT)", ryzenadj.get_slow_value());
+    msg_or_err(&mut log_msg, "get_gfx_clk", ryzenadj.get_gfx_clk());
+    msg_or_err(&mut log_msg, "get_gfx_volt", ryzenadj.get_gfx_volt());
+
+    log::info!("RyzenAdj GPU info:\n{}", log_msg);
+}
+
 fn ryzen_adj_or_log() -> Option<Mutex<RyzenAdj>> {
     match RyzenAdj::new() {
-        Ok(x) => Some(Mutex::new(x)),
+        Ok(x) => {
+            log_capabilities(&x);
+            Some(Mutex::new(x))
+        },
         Err(e) => {
             log::error!("RyzenAdj init error: {}", e);
             None
@@ -256,9 +287,29 @@ impl OnSet for Gpu {
 
 impl crate::settings::OnPowerEvent for Gpu {}
 
+fn bad_gpu_limits() -> crate::api::GpuLimits {
+    crate::api::GpuLimits {
+        fast_ppt_limits: None,
+        slow_ppt_limits: None,
+        ppt_step: 1,
+        tdp_limits: None,
+        tdp_boost_limits: None,
+        tdp_step: 1,
+        clock_min_limits: None,
+        clock_max_limits: None,
+        clock_step: 100,
+        memory_control_capable: false,
+    }
+}
+
 impl TGpu for Gpu {
     fn limits(&self) -> crate::api::GpuLimits {
-        self.generic.limits()
+        if self.implementor.is_some() {
+            // NOTE: since set functions may succeed when gets do not, there is no good way to (automatically) check whether things are working
+            self.generic.limits()
+        } else {
+            bad_gpu_limits()
+        }
     }
 
     fn json(&self) -> crate::persist::GpuJson {