Merge pull request #276 from TheSven73/rust-for-linux-pdev-pr2

Simple Rust driver that touches real hardware: PR 2/6

Author: wedsonaf

arch/arm/boot/dts/bcm2835-rpi-zero-w-rust.dts

@@ -7,6 +7,7 @@
 
 use alloc::boxed::Box;
 use core::pin::Pin;
+use kernel::of::OfMatchTable;
 use kernel::prelude::*;
 use kernel::{cstr, platdev};
 
@@ -24,7 +25,13 @@ struct RngModule {
 
 impl KernelModule for RngModule {
     fn init() -> Result<Self> {
-        let pdev = platdev::Registration::new_pinned(cstr!("bcm2835-rng-rust"), &THIS_MODULE)?;
+        let of_match_tbl = OfMatchTable::new(&cstr!("brcm,bcm2835-rng"))?;
+
+        let pdev = platdev::Registration::new_pinned(
+            cstr!("bcm2835-rng-rust"),
+            Some(of_match_tbl),
+            &THIS_MODULE,
+        )?;
 
         Ok(RngModule { _pdev: pdev })
     }

arch/arm/boot/dts/bcm2836-rpi-2-b-rust.dts

@@ -14,6 +14,7 @@
 #include <linux/mm.h>
 #include <uapi/linux/android/binder.h>
 #include <linux/platform_device.h>
+#include <linux/of_platform.h>
 
 // `bindgen` gets confused at certain things
 const gfp_t BINDINGS_GFP_KERNEL = GFP_KERNEL;

drivers/char/hw_random/bcm2835_rng_rust.rs

@@ -63,6 +63,7 @@ pub mod sysctl;
 
 pub mod io_buffer;
 pub mod iov_iter;
+pub mod of;
 pub mod platdev;
 mod types;
 pub mod user_ptr;