feat(Hardware Support): Qualcomm SSC sensors through FastRPC

Cargo.toml

@@ -119,6 +119,7 @@ hidapi = "2.6.4"
 industrial-io = "0.6.1"
 #evdev = { version = "0.12.1", features = ["tokio"] }
 inotify = "0.11.0"
+libloading = "0.9.0"
 # Omit trace logging for release builds
 log = { version = "0.4.29", features = [
   "max_level_trace",

bindings/dbus-xml/org.shadowblip.Input.Source.FastRPCDevice.xml

@@ -0,0 +1,45 @@
+
+<!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN"
+ "http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd">
+<node>
+  <interface name="org.freedesktop.DBus.Properties">
+    <method name="Get">
+      <arg name="interface_name" type="s" direction="in"/>
+      <arg name="property_name" type="s" direction="in"/>
+      <arg type="v" direction="out"/>
+    </method>
+    <method name="Set">
+      <arg name="interface_name" type="s" direction="in"/>
+      <arg name="property_name" type="s" direction="in"/>
+      <arg name="value" type="v" direction="in"/>
+    </method>
+    <method name="GetAll">
+      <arg name="interface_name" type="s" direction="in"/>
+      <arg type="a{sv}" direction="out"/>
+    </method>
+    <signal name="PropertiesChanged">
+      <arg name="interface_name" type="s"/>
+      <arg name="changed_properties" type="a{sv}"/>
+      <arg name="invalidated_properties" type="as"/>
+    </signal>
+  </interface>
+  <interface name="org.freedesktop.DBus.Introspectable">
+    <method name="Introspect">
+      <arg type="s" direction="out"/>
+    </method>
+  </interface>
+  <interface name="org.freedesktop.DBus.Peer">
+    <method name="Ping">
+    </method>
+    <method name="GetMachineId">
+      <arg type="s" direction="out"/>
+    </method>
+  </interface>
+  <interface name="org.shadowblip.Input.Source.FastRPCDevice">
+    <!--
+     Returns the human readable name of the device (e.g. XBox 360 Pad)
+     -->
+    <property name="Id" type="s" access="read"/>
+  </interface>
+</node>
+

rootfs/usr/share/inputplumber/schema/composite_device_v1.json

@@ -195,6 +195,9 @@
         "evdev": {
           "$ref": "#/definitions/Evdev"
         },
+        "fastrpc": {
+          "$ref": "#/definitions/FastRPC"
+        },
         "hidraw": {
           "$ref": "#/definitions/Hidraw"
         },
@@ -380,6 +383,20 @@
       "required": [],
       "title": "Evdev"
     },
+    "FastRPC": {
+      "type": "object",
+      "additionalProperties": false,
+      "properties": {
+        "id": {
+          "description": "Name of the FastRPC device: /dev/fastrpc*",
+          "type": "string"
+        },
+        "name": {
+          "type": "string"
+        }
+      },
+      "title": "FastRPC"
+    },
     "Hidraw": {
       "type": "object",
       "additionalProperties": false,

src/config/mod.rs

@@ -231,6 +231,9 @@ pub struct SourceDevice {
     /// Devices that match the given evdev properties will be captured by InputPlumber
     #[serde(skip_serializing_if = "Option::is_none")]
     pub evdev: Option<Evdev>,
+    /// Devices that match the given fastrpc properties will be captured by InputPlumber
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub fastrpc: Option<FastRpc>,
     /// Devices that match the given hidraw properties will be captured by InputPlumber
     #[serde(skip_serializing_if = "Option::is_none")]
     pub hidraw: Option<Hidraw>,
@@ -403,6 +406,15 @@ pub struct IIO {
     pub mount_matrix: Option<MountMatrix>,
 }
 
+#[derive(Debug, Deserialize, Serialize, Clone, PartialEq)]
+#[serde(rename_all = "snake_case")]
+pub struct FastRpc {
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub id: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub name: Option<String>,
+}
+
 #[derive(Debug, Deserialize, Serialize, Clone, PartialEq)]
 #[serde(rename_all = "snake_case")]
 #[allow(clippy::upper_case_acronyms)]
@@ -440,6 +452,16 @@ pub struct MountMatrix {
     pub z: [f64; 3],
 }
 
+impl Default for MountMatrix {
+    fn default() -> Self {
+        MountMatrix {
+            x: [1.0, 0.0, 0.0],
+            y: [0.0, 1.0, 0.0],
+            z: [0.0, 0.0, 1.0],
+        }
+    }
+}
+
 #[derive(Debug, Deserialize, Serialize, Clone, PartialEq)]
 #[serde(rename_all = "snake_case")]
 pub struct EventsConfig {
@@ -579,6 +601,12 @@ impl CompositeDeviceConfig {
                     return Some(config.clone());
                 }
             }
+            "fastrpc" => {
+                let fastrpc_config = config.fastrpc.as_ref()?;
+                if self.has_matching_fastrpc(udevice, fastrpc_config) {
+                    return Some(config.clone());
+                }
+            }
             _ => (),
         }
 
@@ -841,6 +869,35 @@ impl CompositeDeviceConfig {
         true
     }
 
+    /// Returns true if a given FastRPC device is within a list of fastrpc configs.
+    pub fn has_matching_fastrpc(&self, device: &UdevDevice, fastrpc_config: &FastRpc) -> bool {
+        log::trace!(
+            "Checking FastRPC config: {:?} against {:?}",
+            fastrpc_config,
+            device
+        );
+
+        if let Some(id) = fastrpc_config.id.as_ref() {
+            let dsyspath = device.syspath();
+            log::trace!("Checking id: {id} against {dsyspath}");
+            if !glob_match(id.as_str(), dsyspath.as_str()) {
+                return false;
+            }
+        }
+
+        if let Some(name) = fastrpc_config.name.as_ref() {
+            // FastRPC devices don't seem to have a name (or it's empty)
+            // The sysname works fine
+            let dname = device.sysname();
+            log::trace!("Checking sysname: {name} against {dname}");
+            if !glob_match(name.as_str(), dname.as_str()) {
+                return false;
+            }
+        }
+
+        true
+    }
+
     /// Returns true if a given evdev device is within a list of evdev configs.
     pub fn has_matching_evdev(&self, device: &UdevDevice, evdev_config: &Evdev) -> bool {
         //TODO: Check if the evdev has no proterties defined, that would always match.

src/dbus/interface/source/fastrpc.rs

@@ -0,0 +1,33 @@
+use crate::{
+    dbus::{interface::Unregisterable, polkit::check_polkit},
+    udev::device::UdevDevice,
+};
+use zbus::{fdo, message::Header, Connection};
+use zbus_macros::interface;
+
+/// DBusInterface exposing information about a FastRPC device
+pub struct SourceFastRpcInterface {
+    device: UdevDevice,
+}
+
+impl SourceFastRpcInterface {
+    pub fn new(device: UdevDevice) -> SourceFastRpcInterface {
+        SourceFastRpcInterface { device }
+    }
+}
+
+#[interface(name = "org.shadowblip.Input.Source.FastRPCDevice")]
+impl SourceFastRpcInterface {
+    /// Returns the human readable name of the device (e.g. XBox 360 Pad)
+    #[zbus(property)]
+    async fn id(
+        &self,
+        #[zbus(connection)] conn: &Connection,
+        #[zbus(header)] hdr: Option<Header<'_>>,
+    ) -> fdo::Result<String> {
+        check_polkit(conn, hdr, "org.shadowblip.Input.Source.FastRPCDevice.Id").await?;
+        Ok(self.device.sysname())
+    }
+}
+
+impl Unregisterable for SourceFastRpcInterface {}

src/dbus/interface/source/mod.rs

@@ -1,4 +1,5 @@
 pub mod evdev;
+pub mod fastrpc;
 pub mod hidraw;
 pub mod iio_imu;
 pub mod led;

src/drivers/mod.rs

@@ -10,6 +10,7 @@ pub mod opineo;
 pub mod oxp_hid;
 pub mod oxp_tty;
 pub mod rog_ally;
+pub mod ssc;
 pub mod steam_deck;
 pub mod ultimate2_wireless;
 pub mod unified_gamepad;