MIRRORS/linux-yocto
1
0
Fork 0
mirror of git://git.yoctoproject.org/linux-yocto.git synced 2025-10-23 07:23:12 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity

samples: rust: add Rust platform sample driver

Browse Source 
Add a sample Rust platform driver illustrating the usage of the platform
bus abstractions.

This driver probes through either a match of device / driver name or a
match within the OF ID table.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Tested-by: Dirk Behme <dirk.behme@de.bosch.com>
Tested-by: Fabien Parent <fabien.parent@linaro.org>
Link: https://lore.kernel.org/r/20241219170425.12036-16-dakr@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Danilo Krummrich 2024-12-19 18:04:17 +01:00 committed by Greg Kroah-Hartman
parent 683a63befc
commit b2e8a83242
5 changed files with 66 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
MAINTAINERS
View File

@ -7038,6 +7038,7 @@ F: rust/kernel/device_id.rs
F: rust/kernel/devres.rs
F: rust/kernel/driver.rs
F: rust/kernel/platform.rs
F: samples/rust/rust_driver_platform.rs
DRIVERS FOR OMAP ADAPTIVE VOLTAGE SCALING (AVS)
M: Nishanth Menon <nm@ti.com>

5
drivers/of/unittest-data/tests-platform.dtsi
View File

@ -33,6 +33,11 @@
reg = <0x100>;
};
};
test-device@2 {
compatible = "test,rust-device";
reg = <0x2>;
};
};
};
};

10
samples/rust/Kconfig
View File

@ -51,6 +51,16 @@ config SAMPLE_RUST_DRIVER_PCI
If unsure, say N.
config SAMPLE_RUST_DRIVER_PLATFORM
tristate "Platform Driver"
help
This option builds the Rust Platform driver sample.
To compile this as a module, choose M here:
the module will be called rust_driver_platform.
If unsure, say N.
config SAMPLE_RUST_HOSTPROGS
bool "Host programs"
help

1
samples/rust/Makefile
View File

@ -5,6 +5,7 @@ obj-$(CONFIG_SAMPLE_RUST_MINIMAL) += rust_minimal.o
obj-$(CONFIG_SAMPLE_RUST_MISC_DEVICE) += rust_misc_device.o
obj-$(CONFIG_SAMPLE_RUST_PRINT) += rust_print.o
obj-$(CONFIG_SAMPLE_RUST_DRIVER_PCI) += rust_driver_pci.o
obj-$(CONFIG_SAMPLE_RUST_DRIVER_PLATFORM) += rust_driver_platform.o
rust_print-y := rust_print_main.o rust_print_events.o

49
samples/rust/rust_driver_platform.rs Normal file
View File

@ -0,0 +1,49 @@
// SPDX-License-Identifier: GPL-2.0
//! Rust Platform driver sample.
use kernel::{c_str, of, platform, prelude::*};
struct SampleDriver {
pdev: platform::Device,
}
struct Info(u32);
kernel::of_device_table!(
OF_TABLE,
MODULE_OF_TABLE,
<SampleDriver as platform::Driver>::IdInfo,
[(of::DeviceId::new(c_str!("test,rust-device")), Info(42))]
);
impl platform::Driver for SampleDriver {
type IdInfo = Info;
const OF_ID_TABLE: Option<of::IdTable<Self::IdInfo>> = Some(&OF_TABLE);
fn probe(pdev: &mut platform::Device, info: Option<&Self::IdInfo>) -> Result<Pin<KBox<Self>>> {
dev_dbg!(pdev.as_ref(), "Probe Rust Platform driver sample.\n");
if let Some(info) = info {
dev_info!(pdev.as_ref(), "Probed with info: '{}'.\n", info.0);
}
let drvdata = KBox::new(Self { pdev: pdev.clone() }, GFP_KERNEL)?;
Ok(drvdata.into())
}
}
impl Drop for SampleDriver {
fn drop(&mut self) {
dev_dbg!(self.pdev.as_ref(), "Remove Rust Platform driver sample.\n");
}
}
kernel::module_platform_driver! {
type: SampleDriver,
name: "rust_driver_platform",
author: "Danilo Krummrich",
description: "Rust Platform driver",
license: "GPL v2",
}