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Tue, 29 Apr 2025 04:40:59 -0700 (PDT) From: Ayush Singh Date: Tue, 29 Apr 2025 17:09:26 +0530 Subject: [PATCH v2] rust: kernel: device: Add devm_of_platform_populate/depopulate Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250429-rust-of-populate-v2-1-0ad329d121c5@beagleboard.org> X-B4-Tracking: v=1; b=H4sIAG26EGgC/32NTQqDMBSEryJv3RTz08a66j2Ki6jPGBATXqK0S O7e1AOUWX0D880BEclhhLY6gHB30fm1gLhUMMxmtcjcWBhELW61Eg2jLSbmJxZ82BaTkPViety 5bqRSHMosEE7ufSpfXeHZxeTpcz7s/Nf+ke2clYxSaq2V0IN69mjsgr03NF49Wehyzl+3ODG2t gAAAA== X-Change-ID: 20250428-rust-of-populate-b2f961783441 To: Jason Kridner , Deepak Khatri , Robert Nelson , Dhruva Gole , Miguel Ojeda , Alex Gaynor , Boqun Feng , Gary Guo , =?utf-8?q?Bj=C3=B6rn_Roy_Baron?= , Benno Lossin , Andreas Hindborg , Alice Ryhl , Trevor Gross , Danilo Krummrich , Greg Kroah-Hartman , "Rafael J. Wysocki" Cc: rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org, Ayush Singh X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2622; i=ayush@beagleboard.org; h=from:subject:message-id; bh=7SGr5L2ykKUQUo0zMXmWvlFQAdQphSQN1gFTLVtW/kQ=; b=owEBbQKS/ZANAwAKAQXO9ceJ5Vp0AcsmYgBoELq7qod87HsYICQmfxD37VQj5JMKjlH5zmmss sxUP2OTqw6JAjMEAAEKAB0WIQTfzBMe8k8tZW+lBNYFzvXHieVadAUCaBC6uwAKCRAFzvXHieVa dPZDEACUNeVD0+9TD2cq2U5DhZLNx2BQL9Rc6QKKvwLvD3ZglCCSZDltWrCoFoC1g8xtzrPOGHP HspKUMsTlILXLmmqI9dCyHlDsHDak5UJSDzXm4BWJcr8py2jbZbVKQ0uZ3sQpRK6c4hO3RwZ1NQ pYZEE9hHVJFlLutOXvfmC7idYIi+1hvEAVB0XpPcOInkGVdBXhWFxeme19/TxphVDRqeSr3Aq7e FodBQ3tM5TB5Ann/Yt4naeTaIU8sHlbFle/4NY9rGJIG/nNFJGkOFdgJQ+kx87N71po1yRIQQXr nIVL7qK8811i6BpRXDa7tvM8ZoSRaDlVMo0QvKTs3MhGH01N9bSSAZN2DNFxzIKSdoPPnGkvR2o +ZxD1xz6wpztcCKxnWSYiUpsfZoqtADM6yg/83tcmO42AXvgH8o3dppK6hzeOAi/Px7t/8sN3RP 0lTHo00JVRYSW2QutKwvsO84Fma7tJHX4B+YNljluR4xYXcZBNxBxCbBLts/MqrhMWd9GW0KGG5 8zJXomFwcL+s8SX3RBpYcTmetsxmPwk1y2zDBPyX0o4iQRgeRBn77Sd5Y43SkzUHUmuwJ0qF9Q4 AwRPdAjeoLD48g7WafqZ9uw21vKZYvUtESTu4wIxpRR0G1vSJ8sPAq0RleCaniGhFvZ5H/RlOH3 RJJuro8NEDElntw== X-Developer-Key: i=ayush@beagleboard.org; a=openpgp; fpr=DFCC131EF24F2D656FA504D605CEF5C789E55A74 Add abstractions for devm_of_platform_populate and devm_of_platform_depopulate. Can only be used with a bound device. Signed-off-by: Ayush Singh --- Allow calling platform_populate/depopulate from Rust code. To see how the bindings look in usage, see my working tree [0] for a connector driver I am working on. [0]: https://github.com/Ayush1325/linux/commits/b4/beagle-cape/ --- Changes in v2: - Rename to devm_of_platform_populate/depopulate. - Add SAFETY comments. - Implement only for bound device - Import to_result - Link to v1: https://lore.kernel.org/r/20250428-rust-of-populate-v1-1-1d33= 777427c4@beagleboard.org --- rust/bindings/bindings_helper.h | 1 + rust/kernel/device.rs | 15 +++++++++++++++ 2 files changed, 16 insertions(+) diff --git a/rust/bindings/bindings_helper.h b/rust/bindings/bindings_helpe= r.h index 8a2add69e5d66d1c2ebed9d2c950380e61c48842..51ec0754960377e5fc6bc070348= 7bf2086eff0e6 100644 --- a/rust/bindings/bindings_helper.h +++ b/rust/bindings/bindings_helper.h @@ -25,6 +25,7 @@ #include #include #include +#include #include #include #include diff --git a/rust/kernel/device.rs b/rust/kernel/device.rs index 40c1f549b0bae9fd9aa3f41539ccb69896c2560d..dc52abeb114792fcecce469c11e= 336c23c4b1c00 100644 --- a/rust/kernel/device.rs +++ b/rust/kernel/device.rs @@ -6,6 +6,7 @@ =20 use crate::{ bindings, + error::to_result, str::CStr, types::{ARef, Opaque}, }; @@ -209,6 +210,20 @@ pub fn property_present(&self, name: &CStr) -> bool { } } =20 +impl Device { + /// Populate platform_devices from device tree data + pub fn devm_of_platform_populate(&self) -> crate::error::Result<()> { + // SAFETY: self is valid bound Device reference + to_result(unsafe { bindings::devm_of_platform_populate(self.as_raw= ()) }) + } + + /// Remove devices populated from device tree + pub fn devm_of_platform_depopulate(&self) { + // SAFETY: self is valid bound Device reference + unsafe { bindings::devm_of_platform_depopulate(self.as_raw()) } + } +} + // SAFETY: `Device` is a transparent wrapper of a type that doesn't depend= on `Device`'s generic // argument. kernel::impl_device_context_deref!(unsafe { Device }); --- base-commit: 33035b665157558254b3c21c3f049fd728e72368 change-id: 20250428-rust-of-populate-b2f961783441 Best regards, --=20 Ayush Singh