rust: io: rename `io::Io` accessors

Rename the I/O accessors provided by `Io` to encode the type as
number instead of letter. This is in preparation for Port I/O support
to use a trait for generic accessors.

Add a `c_fn` argument to the accessor generation macro to translate
between rust and C names.

Suggested-by: Danilo Krummrich <dakr@kernel.org>
Link: https://rust-for-linux.zulipchat.com/#narrow/channel/288089-General/topic/PIO.20support/near/499460541
Signed-off-by: Fiona Behrens <me@kloenk.dev>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Acked-by: Daniel Almeida <daniel.almeida@collabora.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20250217-io-generic-rename-v1-1-06d97a9e3179@kloenk.dev
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 6 insertions, 6 deletions

diff --git a/samples/rust/rust_driver_pci.rs b/samples/rust/rust_driver_pci.rs
index 1fb6e44f3395..ddc52db71a82 100644
--- a/samples/rust/rust_driver_pci.rs
+++ b/samples/rust/rust_driver_pci.rs
@@ -43,17 +43,17 @@ kernel::pci_device_table!(
 impl SampleDriver {
     fn testdev(index: &TestIndex, bar: &Bar0) -> Result<u32> {
         // Select the test.
-        bar.writeb(index.0, Regs::TEST);
+        bar.write8(index.0, Regs::TEST);
 
-        let offset = u32::from_le(bar.readl(Regs::OFFSET)) as usize;
-        let data = bar.readb(Regs::DATA);
+        let offset = u32::from_le(bar.read32(Regs::OFFSET)) as usize;
+        let data = bar.read8(Regs::DATA);
 
         // Write `data` to `offset` to increase `count` by one.
         //
-        // Note that we need `try_writeb`, since `offset` can't be checked at compile-time.
-        bar.try_writeb(data, offset)?;
+        // Note that we need `try_write8`, since `offset` can't be checked at compile-time.
+        bar.try_write8(data, offset)?;
 
-        Ok(bar.readl(Regs::COUNT))
+        Ok(bar.read32(Regs::COUNT))
     }
 }