Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
rust: Add SoC Driver Sample
Shows registration of a SoC device upon receipt of a probe.
Signed-off-by: Matthew Maurer <mmaurer@google.com>
Link: https://patch.msgid.link/20251226-soc-bindings-v4-3-2c2fac08f820@google.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
authored by
Matthew Maurer
and committed by
Danilo Krummrich
d43a12e4
057d44b0
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MAINTAINERS
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MAINTAINERS
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samples/rust/Kconfig
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samples/rust/Kconfig
···
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If unsure, say N.
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config SAMPLE_RUST_SOC
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tristate "SoC Driver"
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select SOC_BUS
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help
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This option builds the Rust SoC driver sample.
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To compile this as a module, choose M here:
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the module will be called rust_soc.
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If unsure, say N.
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config SAMPLE_RUST_HOSTPROGS
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bool "Host programs"
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help
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samples/rust/Makefile
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samples/rust/Makefile
···
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obj-$(CONFIG_SAMPLE_RUST_DRIVER_FAUX) += rust_driver_faux.o
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obj-$(CONFIG_SAMPLE_RUST_DRIVER_AUXILIARY) += rust_driver_auxiliary.o
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obj-$(CONFIG_SAMPLE_RUST_CONFIGFS) += rust_configfs.o
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obj-$(CONFIG_SAMPLE_RUST_SOC) += rust_soc.o
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rust_print-y := rust_print_main.o rust_print_events.o
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samples/rust/rust_soc.rs
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samples/rust/rust_soc.rs
···
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// SPDX-License-Identifier: GPL-2.0
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//! Rust SoC Platform driver sample.
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use kernel::{
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acpi,
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device::Core,
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of,
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platform,
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prelude::*,
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soc,
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str::CString,
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sync::aref::ARef, //
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};
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use pin_init::pin_init_scope;
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#[pin_data]
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struct SampleSocDriver {
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pdev: ARef<platform::Device>,
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#[pin]
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_dev_reg: soc::Registration,
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}
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kernel::of_device_table!(
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OF_TABLE,
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MODULE_OF_TABLE,
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<SampleSocDriver as platform::Driver>::IdInfo,
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[(of::DeviceId::new(c"test,rust-device"), ())]
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);
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kernel::acpi_device_table!(
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ACPI_TABLE,
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MODULE_ACPI_TABLE,
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<SampleSocDriver as platform::Driver>::IdInfo,
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[(acpi::DeviceId::new(c"LNUXBEEF"), ())]
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);
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impl platform::Driver for SampleSocDriver {
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type IdInfo = ();
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const OF_ID_TABLE: Option<of::IdTable<Self::IdInfo>> = Some(&OF_TABLE);
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const ACPI_ID_TABLE: Option<acpi::IdTable<Self::IdInfo>> = Some(&ACPI_TABLE);
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fn probe(
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pdev: &platform::Device<Core>,
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_info: Option<&Self::IdInfo>,
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) -> impl PinInit<Self, Error> {
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let dev = pdev.as_ref();
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dev_dbg!(dev, "Probe Rust SoC driver sample.\n");
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let pdev = pdev.into();
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pin_init_scope(move || {
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let machine = CString::try_from(c"My cool ACME15 dev board")?;
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let family = CString::try_from(c"ACME")?;
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let revision = CString::try_from(c"1.2")?;
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let serial_number = CString::try_from(c"12345")?;
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let soc_id = CString::try_from(c"ACME15")?;
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let attr = soc::Attributes {
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machine: Some(machine),
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family: Some(family),
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revision: Some(revision),
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serial_number: Some(serial_number),
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soc_id: Some(soc_id),
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};
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Ok(try_pin_init!(SampleSocDriver {
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pdev: pdev,
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_dev_reg <- soc::Registration::new(attr),
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}? Error))
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})
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}
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}
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kernel::module_platform_driver! {
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type: SampleSocDriver,
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name: "rust_soc",
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authors: ["Matthew Maurer"],
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description: "Rust SoC Driver",
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license: "GPL",
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}