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Message-ID: <20250314-observant-cyber-chowchow-bfe5f9@houat>
Date: Fri, 14 Mar 2025 13:02:12 +0100
From: Maxime Ripard <mripard@...nel.org>
To: Lyude Paul <lyude@...hat.com>
Cc: dri-devel@...ts.freedesktop.org, rust-for-linux@...r.kernel.org, 
	Danilo Krummrich <dakr@...nel.org>, mcanal@...lia.com, Alice Ryhl <aliceryhl@...gle.com>, 
	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>, 
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Asahi Lina <lina@...hilina.net>, 
	Wedson Almeida Filho <wedsonaf@...il.com>, open list <linux-kernel@...r.kernel.org>
Subject: Re: [RFC v3 10/33] rust: drm/kms: Add
 ConnectorGuard::add_modes_noedid()

On Wed, Mar 05, 2025 at 05:59:26PM -0500, Lyude Paul wrote:
> A simple binding for drm_add_modes_noedid() using the ConnectorGuard type
> we just added.
> 
> Signed-off-by: Lyude Paul <lyude@...hat.com>
> ---
>  rust/bindings/bindings_helper.h  |  1 +
>  rust/kernel/drm/kms/connector.rs | 11 +++++++++++
>  2 files changed, 12 insertions(+)
> 
> 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 {

Why do we need a tuple of i32 there instead of two u32/usize parameter?

And the return type should be unsigned as well.

Maxime

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