| 1 | |
| 2 |
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| 3 | |
| 4 |
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| 5 | use kernel::{
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| 6 | acpi,
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| 7 | device::{
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| 8 | Bound,
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| 9 | Core, |
| 10 | },
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| 11 | of,
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| 12 | prelude::*,
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| 13 | serdev,
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| 14 | sync::aref::ARef, |
| 15 | };
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| 16 |
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| 17 | struct SampleDriver {
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| 18 | sdev: ARef<serdev::Device>,
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| 19 | }
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| 20 |
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| 21 | kernel::of_device_table!(
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| 22 | OF_TABLE,
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| 23 | <SampleDriver as serdev::Driver>::IdInfo,
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| 24 | [(of::DeviceId::new(c"test,rust_driver_serdev"), ())]
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| 25 | );
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| 26 |
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| 27 | kernel::acpi_device_table!(
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| 28 | ACPI_TABLE,
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| 29 | <SampleDriver as serdev::Driver>::IdInfo,
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| 30 | [(acpi::DeviceId::new(c"LNUXBEEF"), ())]
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| 31 | );
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| 32 |
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| 33 | #[vtable]
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| 34 | impl serdev::Driver for SampleDriver {
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| 35 | type IdInfo = ();
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| 36 | type Data<'bound> = Self;
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| 37 | const OF_ID_TABLE: Option<of::IdTable<Self::IdInfo>> = Some(&OF_TABLE);
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| 38 | const ACPI_ID_TABLE: Option<acpi::IdTable<Self::IdInfo>> = Some(&ACPI_TABLE);
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| 39 |
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| 40 | fn probe<'bound>(
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| 41 | sdev: &'bound serdev::Device<Core<'_>>,
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| 42 | _info: Option<&'bound Self::IdInfo>,
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| 43 | ) -> impl PinInit<Self, Error> + 'bound {
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| 44 | let dev = sdev.as_ref();
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| 45 |
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| 46 | dev_dbg!(dev, "Probe Rust Serial device bus device driver sample.\n");
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| 47 |
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| 48 | if sdev
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| 49 | .set_baudrate(
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| 50 | dev.fwnode()
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| 51 | .and_then(|fwnode| fwnode.property_read(c"baudrate").optional())
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| 52 | .unwrap_or(115200),
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| 53 | )
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| 54 | .is_err()
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| 55 | {
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| 56 | return Err(EINVAL);
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| 57 | }
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| 58 | sdev.set_flow_control(false);
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| 59 | sdev.set_parity(serdev::Parity::None)?;
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| 60 |
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| 61 | Ok(Self { sdev: sdev.into() })
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| 62 | }
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| 63 |
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| 64 | fn receive<'bound>(
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| 65 | sdev: &'bound serdev::Device<Bound>,
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| 66 | _this: Pin<&Self>,
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| 67 | data: &[u8],
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| 68 | ) -> usize {
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| 69 | sdev.write(data).unwrap_or_default() as usize
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| 70 | }
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| 71 | }
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| 72 |
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| 73 | impl Drop for SampleDriver {
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| 74 | fn drop(&mut self) {
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| 75 | dev_dbg!(
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| 76 | self.sdev.as_ref(),
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| 77 | "Remove Rust Serial device bus device driver sample.\n"
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| 78 | );
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| 79 | }
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| 80 | }
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| 81 |
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| 82 | kernel::module_serdev_device_driver! {
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| 83 | type: SampleDriver,
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| 84 | name: "rust_driver_serdev",
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| 85 | authors: ["Markus Probst"],
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| 86 | description: "Rust Serial device bus device driver",
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| 87 | license: "GPL v2",
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| 88 | }
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