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https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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7fdffdda63
Add a type Data<'bound> associated type to all bus driver traits, decoupling the driver's bus device private data type from the driver struct itself. In the context of adding a 'bound lifetime, making this an associated type has the advantage that it allows us to avoid a driver trait global lifetime and it avoids the need for ForLt for bus device private data; both of which make the subsequent implementation by buses much simpler. All existing drivers and doc examples set type Data = Self to preserve the current behavior. Reviewed-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Gary Guo <gary@garyguo.net> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://patch.msgid.link/20260525202921.124698-5-dakr@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org>
75 lines
1.7 KiB
Rust
75 lines
1.7 KiB
Rust
// SPDX-License-Identifier: GPL-2.0
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//! Rust I2C driver sample.
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use kernel::{
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acpi,
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device::Core,
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i2c,
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of,
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prelude::*, //
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};
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struct SampleDriver;
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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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<SampleDriver as i2c::Driver>::IdInfo,
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[(acpi::DeviceId::new(c"LNUXBEEF"), 0)]
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}
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kernel::i2c_device_table! {
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I2C_TABLE,
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MODULE_I2C_TABLE,
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<SampleDriver as i2c::Driver>::IdInfo,
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[(i2c::DeviceId::new(c"rust_driver_i2c"), 0)]
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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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<SampleDriver as i2c::Driver>::IdInfo,
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[(of::DeviceId::new(c"test,rust_driver_i2c"), 0)]
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}
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impl i2c::Driver for SampleDriver {
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type IdInfo = u32;
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type Data = Self;
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const ACPI_ID_TABLE: Option<acpi::IdTable<Self::IdInfo>> = Some(&ACPI_TABLE);
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const I2C_ID_TABLE: Option<i2c::IdTable<Self::IdInfo>> = Some(&I2C_TABLE);
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const OF_ID_TABLE: Option<of::IdTable<Self::IdInfo>> = Some(&OF_TABLE);
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fn probe(
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idev: &i2c::I2cClient<Core>,
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info: Option<&Self::IdInfo>,
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) -> impl PinInit<Self, Error> {
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let dev = idev.as_ref();
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dev_info!(dev, "Probe Rust I2C driver sample.\n");
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if let Some(info) = info {
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dev_info!(dev, "Probed with info: '{}'.\n", info);
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}
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Ok(Self)
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}
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fn shutdown(idev: &i2c::I2cClient<Core>, _this: Pin<&Self>) {
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dev_info!(idev.as_ref(), "Shutdown Rust I2C driver sample.\n");
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}
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fn unbind(idev: &i2c::I2cClient<Core>, _this: Pin<&Self>) {
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dev_info!(idev.as_ref(), "Unbind Rust I2C driver sample.\n");
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}
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}
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kernel::module_i2c_driver! {
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type: SampleDriver,
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name: "rust_driver_i2c",
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authors: ["Igor Korotin"],
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description: "Rust I2C driver",
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license: "GPL v2",
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}
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