linux-kernel - [RFC v3 11/33] rust: drm/kms: Add ConnectorGuard::set_preferred

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Message-ID: <20250305230406.567126-12-lyude@redhat.com>
Date: Wed,  5 Mar 2025 17:59:27 -0500
From: Lyude Paul <lyude@...hat.com>
To: dri-devel@...ts.freedesktop.org,
	rust-for-linux@...r.kernel.org
Cc: Danilo Krummrich <dakr@...nel.org>,
	mcanal@...lia.com,
	Alice Ryhl <aliceryhl@...gle.com>,
	Maxime Ripard <mripard@...nel.org>,
	Simona Vetter <sima@...ll.ch>,
	Daniel Almeida <daniel.almeida@...labora.com>,
	Miguel Ojeda <ojeda@...nel.org>,
	Alex Gaynor <alex.gaynor@...il.com>,
	Boqun Feng <boqun.feng@...il.com>,
	Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Benno Lossin <benno.lossin@...ton.me>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Trevor Gross <tmgross@...ch.edu>,
	linux-kernel@...r.kernel.org (open list)
Subject: [RFC v3 11/33] rust: drm/kms: Add ConnectorGuard::set_preferred_mode

Add a wrapper for `drm_set_preferred_mode()` for our new
`ConnectorGuard` type so we can set the preferred mode for RVKMS
connectors.

Signed-off-by: Lyude Paul <lyude@...hat.com>
---
 rust/kernel/drm/kms/connector.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/rust/kernel/drm/kms/connector.rs b/rust/kernel/drm/kms/connector.rs
index 855a47b189a91..244db1cfdc552 100644
--- a/rust/kernel/drm/kms/connector.rs
+++ b/rust/kernel/drm/kms/connector.rs
@@ -455,6 +455,12 @@ 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) }
     }
+
+    /// Set the preferred display mode for the underlying [`Connector`].
+    pub fn set_preferred_mode(&self, (h_pref, w_pref): (i32, i32)) {
+        // SAFETY: We hold the locks required to call this via our type invariants.
+        unsafe { bindings::drm_set_preferred_mode(self.as_raw(), h_pref, w_pref) }
+    }
 }
 
 // SAFETY: DRM expects this struct to be zero-initialized
-- 
2.48.1