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[RFC,v3,10/33] rust: drm/kms: Add ConnectorGuard::add_modes_noedid()

Message ID 20250305230406.567126-11-lyude@redhat.com (mailing list archive)
State New
Headers show
Series Rust bindings for KMS + RVKMS | expand

Commit Message

Lyude Paul March 5, 2025, 10:59 p.m. UTC
A simple binding for drm_add_modes_noedid() using the ConnectorGuard type
we just added.

Signed-off-by: Lyude Paul <lyude@redhat.com>
---
 rust/bindings/bindings_helper.h  |  1 +
 rust/kernel/drm/kms/connector.rs | 11 +++++++++++
 2 files changed, 12 insertions(+)
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Patch

diff --git a/rust/bindings/bindings_helper.h b/rust/bindings/bindings_helper.h
index 27828dd36d4f2..846eb6eb8fc4c 100644
--- a/rust/bindings/bindings_helper.h
+++ b/rust/bindings/bindings_helper.h
@@ -13,6 +13,7 @@ 
 #include <drm/drm_crtc.h>
 #include <drm/drm_device.h>
 #include <drm/drm_drv.h>
+#include <drm/drm_edid.h>
 #include <drm/drm_encoder.h>
 #include <drm/drm_file.h>
 #include <drm/drm_fbdev_dma.h>
diff --git a/rust/kernel/drm/kms/connector.rs b/rust/kernel/drm/kms/connector.rs
index 14de3b0529f89..855a47b189a91 100644
--- a/rust/kernel/drm/kms/connector.rs
+++ b/rust/kernel/drm/kms/connector.rs
@@ -446,6 +446,17 @@  fn deref(&self) -> &Self::Target {
     }
 }
 
+impl<'a, T: DriverConnector> ConnectorGuard<'a, T> {
+    /// Add modes for a [`ConnectorGuard`] without an EDID.
+    ///
+    /// Add the specified modes to the connector's mode list up to the given maximum resultion.
+    /// Returns how many modes were added.
+    pub fn add_modes_noedid(&self, (max_h, max_v): (i32, i32)) -> i32 {
+        // SAFETY: We hold the locks required to call this via our type invariants.
+        unsafe { bindings::drm_add_modes_noedid(self.as_raw(), max_h, max_v) }
+    }
+}
+
 // SAFETY: DRM expects this struct to be zero-initialized
 unsafe impl Zeroable for bindings::drm_connector_state {}