Commit b2e8a832 authored by Danilo Krummrich's avatar Danilo Krummrich Committed by Greg Kroah-Hartman
Browse files

samples: rust: add Rust platform sample driver 



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: default avatarRob Herring (Arm) <robh@kernel.org>
Signed-off-by: default avatarDanilo Krummrich <dakr@kernel.org>
Tested-by: default avatarDirk Behme <dirk.behme@de.bosch.com>
Tested-by: default avatarFabien Parent <fabien.parent@linaro.org>
Link: https://lore.kernel.org/r/20241219170425.12036-16-dakr@kernel.org


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 683a63be

MAINTAINERS

+1 −0
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@@ -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>
































drivers/of/unittest-data/tests-platform.dtsi



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@@ -33,6 +33,11 @@ dev@100 {







					reg = <0x100>;









				};









			};



















			test-device@2 {









				compatible = "test,rust-device";









				reg = <0x2>;









			};









		};









	};









};
























samples/rust/Kconfig



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@@ -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
































samples/rust/Makefile



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@@ -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










































samples/rust/rust_driver_platform.rs
0 → 100644



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// 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",









}