usbhub: Print firmware version of usb hub (#202)

For example on Framework Desktop:

[...]
USB Hub RTL5424
  Firmware Version: 1.8.8
[...]

Author: quinchou77

framework_lib/src/commandline/mod.rs

@@ -60,6 +60,8 @@ use crate::touchpad::print_touchpad_fw_ver;
 use crate::touchscreen;
 #[cfg(feature = "uefi")]
 use crate::uefi::enable_page_break;
+#[cfg(feature = "rusb")]
+use crate::usbhub::check_usbhub_version;
 use crate::util::{self, Config, Platform, PlatformFamily};
 #[cfg(feature = "hidapi")]
 use hidapi::HidApi;
@@ -705,6 +707,9 @@ fn print_versions(ec: &CrosEc) {
     #[cfg(feature = "rusb")]
     let _ignore_err = check_camera_version();
 
+    #[cfg(feature = "rusb")]
+    let _ignore_err = check_usbhub_version();
+
     #[cfg(feature = "rusb")]
     let _ignore_err = check_inputmodule_version();
 

framework_lib/src/lib.rs

@@ -25,6 +25,8 @@ pub mod touchpad;
 pub mod touchscreen;
 #[cfg(all(feature = "hidapi", windows))]
 pub mod touchscreen_win;
+#[cfg(feature = "rusb")]
+pub mod usbhub;
 
 #[cfg(feature = "uefi")]
 #[macro_use]

framework_lib/src/usbhub.rs

@@ -0,0 +1,26 @@
+pub const REALTEK_VID: u16 = 0x0BDA;
+pub const RTL5432_PID: u16 = 0x5432;
+pub const RTL5424_PID: u16 = 0x5424;
+
+/// Get and print the firmware version of the usbhub
+pub fn check_usbhub_version() -> Result<(), rusb::Error> {
+    for dev in rusb::devices().unwrap().iter() {
+        let dev_descriptor = dev.device_descriptor().unwrap();
+        if dev_descriptor.vendor_id() != REALTEK_VID
+            || (dev_descriptor.product_id() != RTL5432_PID
+                && dev_descriptor.product_id() != RTL5424_PID)
+        {
+            debug!(
+                "Skipping {:04X}:{:04X}",
+                dev_descriptor.vendor_id(),
+                dev_descriptor.product_id()
+            );
+            continue;
+        }
+
+        let dev_descriptor = dev.device_descriptor()?;
+        println!("USB Hub RTL{:04X}", dev_descriptor.product_id());
+        println!("  Firmware Version: {}", dev_descriptor.device_version());
+    }
+    Ok(())
+}