linux-kernel - [PATCH RFC 3/3] rust: hid: demo the core abstractions for probe and remove

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Message-ID: <20250313160220.6410-6-sergeantsagara@protonmail.com>
Date: Thu, 13 Mar 2025 16:04:00 +0000
From: Rahul Rameshbabu <sergeantsagara@...tonmail.com>
To: linux-kernel@...r.kernel.org, rust-for-linux@...r.kernel.org, linux-input@...r.kernel.org, dri-devel@...ts.freedesktop.org
Cc: Jiri Kosina <jikos@...nel.org>, Benjamin Tissoires <bentiss@...nel.org>, Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, Björn Roy Baron <bjorn3_gh@...tonmail.com>, Benno Lossin <benno.lossin@...ton.me>, Andreas Hindborg <a.hindborg@...nel.org>, Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>, Danilo Krummrich <dakr@...nel.org>, Rahul Rameshbabu <sergeantsagara@...tonmail.com>
Subject: [PATCH RFC 3/3] rust: hid: demo the core abstractions for probe and remove

This is a very basic "hello, world!" implementation to illustrate that the
probe and remove callbacks are working as expected. I chose an arbitrary
device I had on hand for populating in the HID device id table.

  [  +0.012968] monitor_control: Probing HID device vendor: 2389 product: 29204 using Rust!
  [  +0.000108] monitor_control: Removing HID device vendor: 2389 product: 29204 using Rust!

Signed-off-by: Rahul Rameshbabu <sergeantsagara@...tonmail.com>
---
 drivers/hid/hid_monitor_control.rs | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/hid/hid_monitor_control.rs b/drivers/hid/hid_monitor_control.rs
index 18afd69a56d5..aeb6e4058a6b 100644
--- a/drivers/hid/hid_monitor_control.rs
+++ b/drivers/hid/hid_monitor_control.rs
@@ -8,17 +8,22 @@
     Driver,
 };
 
+const USB_VENDOR_ID_NVIDIA: u32 = 0x0955;
+const USB_DEVICE_ID_NVIDIA_THUNDERSTRIKE_CONTROLLER: u32 = 0x7214;
+
 struct HidMonitorControl;
 
 #[vtable]
 impl Driver for HidMonitorControl {
     fn probe(dev: &mut hid::Device, id: &hid::DeviceId) -> Result<()> {
         /* TODO implement */
+        pr_info!("Probing HID device vendor: {} product: {} using Rust!\n", id.vendor(), id.product());
         Ok(())
     }
 
     fn remove(dev: &mut hid::Device) {
         /* TODO implement */
+        pr_info!("Removing HID device vendor: {} product: {} using Rust!\n", dev.vendor(), dev.product());
     }
 }
 
@@ -26,8 +31,8 @@ fn remove(dev: &mut hid::Device) {
     driver: HidMonitorControl,
     id_table: [
         kernel::usb_device! {
-            vendor: /* TODO fill in */,
-            product: /* TODO fill in */,
+            vendor: USB_VENDOR_ID_NVIDIA,
+            product: USB_DEVICE_ID_NVIDIA_THUNDERSTRIKE_CONTROLLER,
         },
     ],
     name: "monitor_control",
-- 
2.47.2