From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sender3-op-o12.zoho.com (sender3-op-o12.zoho.com [136.143.184.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 46AE7293738; Wed, 14 May 2025 19:22:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=136.143.184.12 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747250532; cv=pass; b=rUx+L/bLl0KXSBJyosqIGJ0Bok4CDspXWUgDvFEl4MgCh+m8JsaTBPWJgCkfXt4nOii/vPYoI43oMEF1SxTS6wDIzHFknFkmwqJglWRF+IeyMmu5WjymB34IQEjxYrPmK9fZoniFbuWROMM0/5CRCZ5g/Fsd0hxwnh1nATD8PaI= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747250532; c=relaxed/simple; bh=4RRKn4GkWqWDoFGZ7mAK796x8AcyWQihchUdkjJv1Jo=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=PYw92/pWa/ix0FSs70ei/QdUOxG8DepENkFfsjGj91hMC6aHiK8RIeNTOLwiR6a4feBxxxTIXwPC1DPXuRCf7g3LWwcEXEtchzwyEJ9+KTR35fuyCCC46OjJx79+IxDmh1Jxx8rbU1UY7Kt6azRkw5JtK+++NEq+c7K/zcdiyo4= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (1024-bit key) header.d=collabora.com header.i=daniel.almeida@collabora.com header.b=eGCTYaL/; arc=pass smtp.client-ip=136.143.184.12 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=collabora.com header.i=daniel.almeida@collabora.com header.b="eGCTYaL/" ARC-Seal: i=1; a=rsa-sha256; t=1747250493; cv=none; d=zohomail.com; s=zohoarc; b=JLOH5Yv4FuZvJ6PrTg21EKEHz+BhSzu1Gx9WCrE4n9dQ2v2XwVV/3SxSlwdAgRpC//9xB+ck6zzGP9lSQZhtgv3m+1Exyn/3YqL2i9NOHmYKBXmXXl+YXcECimQpqb7odjWxrMtXotjQjPQiSG3Y7r4unHBKYt3sTcBwI/BCYPU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1747250493; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:Subject:To:To:Message-Id:Reply-To; bh=fa1qeH0DxE7j7jD+ZO1MGlSXV30kYX0Bz9i5YjBNL6w=; b=AtJN5l3SspdCd1m/rZ49UP6FAes4UjFXpw3Y10jX//NwhlfQ87nHPyCarflDTyPVRNbxAGiry79AfnMmVU2R1LfKA5yPyAt7mguzcJA8J0VVvLEabS1wStWFUtx7lM/l0yzs38xBXM2NY+g4xymuPsLoZbJiUhlKBR7gpDSPUSg= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=daniel.almeida@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1747250492; s=zohomail; d=collabora.com; i=daniel.almeida@collabora.com; h=From:From:Date:Date:Subject:Subject:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-Id:Message-Id:References:In-Reply-To:To:To:Cc:Cc:Reply-To; bh=fa1qeH0DxE7j7jD+ZO1MGlSXV30kYX0Bz9i5YjBNL6w=; b=eGCTYaL/jPXKtAyWCqtf2a2x3OmevOfNwxUMq/tVjUJZLIpj8V5GSnjmMnBukyxt SydL0vG74yDMY4JKkma/F0qSlOoPphJqHj7mM9rJ9Q/oVIxDHOeiK4Ad72toLTlZlHi rmv2WY1U5U4YwTfr4x0WaEaH3A7ZsWgqf8agHwn0= Received: by mx.zohomail.com with SMTPS id 17472504907271023.3741658857869; Wed, 14 May 2025 12:21:30 -0700 (PDT) From: Daniel Almeida Date: Wed, 14 May 2025 16:20:52 -0300 Subject: [PATCH v3 2/2] rust: platform: add irq accessors Precedence: bulk X-Mailing-List: rust-for-linux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250514-topics-tyr-request_irq-v3-2-d6fcc2591a88@collabora.com> References: <20250514-topics-tyr-request_irq-v3-0-d6fcc2591a88@collabora.com> In-Reply-To: <20250514-topics-tyr-request_irq-v3-0-d6fcc2591a88@collabora.com> To: 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" , Thomas Gleixner Cc: linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org, Daniel Almeida X-Mailer: b4 0.14.2 X-ZohoMailClient: External These accessors can be used to retrieve an IRQ from a platform device by index or name. The IRQ can then be used to request the line using irq::request::Registration::register() and irq::request::ThreadedRegistration::register(). Signed-off-by: Daniel Almeida --- rust/kernel/platform.rs | 52 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) diff --git a/rust/kernel/platform.rs b/rust/kernel/platform.rs index 4917cb34e2fe8027d3d861e90de51de85f006735..1acaebf38d99d06f93fa13b0b356671ea77ed97a 100644 --- a/rust/kernel/platform.rs +++ b/rust/kernel/platform.rs @@ -188,6 +188,58 @@ impl Device { fn as_raw(&self) -> *mut bindings::platform_device { self.0.get() } + + /// Returns an IRQ for the device by index. + pub fn irq_by_index(&self, index: u32) -> Result { + // SAFETY: `self.as_raw` returns a valid pointer to a `struct platform_device`. + let res = unsafe { bindings::platform_get_irq(self.as_raw(), index) }; + + if res < 0 { + return Err(Error::from_errno(res)); + } + + Ok(res as u32) + } + + /// Same as [`Self::irq_by_index`] but does not print an error message if an IRQ + /// cannot be obtained. + pub fn optional_irq_by_index(&self, index: u32) -> Result { + // SAFETY: `self.as_raw` returns a valid pointer to a `struct platform_device`. + let res = unsafe { bindings::platform_get_irq_optional(self.as_raw(), index) }; + + if res < 0 { + return Err(Error::from_errno(res)); + } + + Ok(res as u32) + } + + /// Returns an IRQ for the device by name. + pub fn irq_by_name(&self, name: &CStr) -> Result { + // SAFETY: `self.as_raw` returns a valid pointer to a `struct platform_device`. + let res = unsafe { bindings::platform_get_irq_byname(self.as_raw(), name.as_char_ptr()) }; + + if res < 0 { + return Err(Error::from_errno(res)); + } + + Ok(res as u32) + } + + /// Same as [`Self::irq_by_name`] but does not print an error message if an IRQ + /// cannot be obtained. + pub fn optional_irq_by_name(&self, name: &CStr) -> Result { + // SAFETY: `self.as_raw` returns a valid pointer to a `struct platform_device`. + let res = unsafe { + bindings::platform_get_irq_byname_optional(self.as_raw(), name.as_char_ptr()) + }; + + if res < 0 { + return Err(Error::from_errno(res)); + } + + Ok(res as u32) + } } impl Deref for Device { -- 2.49.0