first commit

src/card.rs

@@ -0,0 +1,56 @@
+use drm::Device;
+use std::os::fd::{AsFd, BorrowedFd};
+use std::fmt::Debug;
+
+// A simple wrapper for a device node.
+pub struct Card(std::fs::File);
+
+/// Implementing [`AsFd`] is a prerequisite to implementing the traits found
+/// in this crate. Here, we are just calling [`File::as_fd()`] on the inner
+/// [`File`].
+impl AsFd for Card {
+  fn as_fd(&self) -> BorrowedFd<'_> {
+    self.0.as_fd()
+  }
+}
+
+/// Simple helper methods for opening a `Card`.
+impl Card {
+  pub fn open(path: &str) -> anyhow::Result<Self> {
+    let mut options = std::fs::OpenOptions::new();
+    options.read(true);
+    options.write(true);
+
+    let file = options.open(path)?;
+
+    Ok(Card(file))
+  }
+}
+
+impl drm::Device for Card {}
+
+impl Debug for Card {
+  fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+    writeln!(f, "Driver version: {:?}\n", self.get_driver())?;
+    writeln!(f, "BUS ID: {:?}\n", self.get_bus_id())?;
+
+    writeln!(f, "Driver capatibilities:")?;
+    writeln!(f, "\tDumpBuffer: {:?}", self.get_driver_capability(drm::DriverCapability::DumbBuffer).ok())?;
+    writeln!(f, "\tVBlankHighCRTC: {:?}", self.get_driver_capability(drm::DriverCapability::VBlankHighCRTC).ok())?;
+    writeln!(f, "\tDumbPreferredDepth: {:?}", self.get_driver_capability(drm::DriverCapability::DumbPreferredDepth).ok())?;
+    writeln!(f, "\tDumbPreferShadow: {:?}", self.get_driver_capability(drm::DriverCapability::DumbPreferShadow).ok())?;
+    writeln!(f, "\tPrime: {:?}", self.get_driver_capability(drm::DriverCapability::Prime).ok())?;
+    writeln!(f, "\tMonotonicTimestamp: {:?}", self.get_driver_capability(drm::DriverCapability::MonotonicTimestamp).ok())?;
+    writeln!(f, "\tASyncPageFlip: {:?}", self.get_driver_capability(drm::DriverCapability::ASyncPageFlip).ok())?;
+    writeln!(f, "\tAtomicASyncPageFlip: {:?}", self.get_driver_capability(drm::DriverCapability::AtomicASyncPageFlip).ok())?;
+    writeln!(f, "\tCursorWidth: {:?}", self.get_driver_capability(drm::DriverCapability::CursorWidth).ok())?;
+    writeln!(f, "\tCursorHeight: {:?}", self.get_driver_capability(drm::DriverCapability::CursorHeight).ok())?;
+    writeln!(f, "\tAddFB2Modifiers: {:?}", self.get_driver_capability(drm::DriverCapability::AddFB2Modifiers).ok())?;
+    writeln!(f, "\tPageFlipTarget: {:?}", self.get_driver_capability(drm::DriverCapability::PageFlipTarget).ok())?;
+    writeln!(f, "\tCRTCInVBlankEvent: {:?}", self.get_driver_capability(drm::DriverCapability::CRTCInVBlankEvent).ok())?;
+    writeln!(f, "\tSyncObj: {:?}", self.get_driver_capability(drm::DriverCapability::SyncObj).ok())?;
+    writeln!(f, "\tTimelineSyncObj: {:?}", self.get_driver_capability(drm::DriverCapability::TimelineSyncObj).ok())?;
+
+    Ok(())
+  }
+}