From patchwork Fri Dec 16 11:30:05 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 635057 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E4919C4167B for ; Fri, 16 Dec 2022 11:31:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231210AbiLPLb0 (ORCPT ); Fri, 16 Dec 2022 06:31:26 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38450 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231201AbiLPLbY (ORCPT ); Fri, 16 Dec 2022 06:31:24 -0500 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 432A05EDE5 for ; Fri, 16 Dec 2022 03:30:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1671190235; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=rk9JWI3pdKTiEQ8zZpPnUOz6T7PSRjpkXkbL3aNktvI=; b=KcsGLe6e3uZK4CkH7zDzM+jI2PUaWPu9w8NMY4SFYnnS5RbGlVfI5KpkV7HXGpXxBTkAq9 FtXMCaXFYFqCZ+iAdI4ylTdO0vns3Vdl5+ldDbqTA5zhJn172+Md7d7ZWPyYir4FB5/RPq zhPYEKwBoeSkh0lQwVI69VFAGxuLfdo= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-661-Cmph1bZaMqGdLDfi6iuMog-1; Fri, 16 Dec 2022 06:30:31 -0500 X-MC-Unique: Cmph1bZaMqGdLDfi6iuMog-1 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 33CC93814597; Fri, 16 Dec 2022 11:30:30 +0000 (UTC) Received: from shalem.redhat.com (unknown [10.39.194.205]) by smtp.corp.redhat.com (Postfix) with ESMTP id 64F65400F58; Fri, 16 Dec 2022 11:30:26 +0000 (UTC) From: Hans de Goede To: Mark Gross , Andy Shevchenko , Pavel Machek , Lee Jones , Linus Walleij , Daniel Scally , Laurent Pinchart , Mauro Carvalho Chehab , Sakari Ailus Cc: Hans de Goede , platform-driver-x86@vger.kernel.org, linux-leds@vger.kernel.org, linux-gpio@vger.kernel.org, Kate Hsuan , Mark Pearson , Andy Yeh , Yao Hao , linux-media@vger.kernel.org Subject: [PATCH v3 03/11] leds: led-class: Add __of_led_get() helper Date: Fri, 16 Dec 2022 12:30:05 +0100 Message-Id: <20221216113013.126881-4-hdegoede@redhat.com> In-Reply-To: <20221216113013.126881-1-hdegoede@redhat.com> References: <20221216113013.126881-1-hdegoede@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.10 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Turn of_led_get() into a more generic __of_led_get() helper function, which can lookup LEDs in devicetree by either name or index. This is a preparation patch for adding a generic (non devicetree specific) led_get() function. Signed-off-by: Hans de Goede --- drivers/leds/led-class.c | 30 +++++++++++++++++++++--------- 1 file changed, 21 insertions(+), 9 deletions(-) diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c index 5f40110bd260..1dd421ca56c1 100644 --- a/drivers/leds/led-class.c +++ b/drivers/leds/led-class.c @@ -232,19 +232,18 @@ static struct led_classdev *__led_get(struct device *led_dev) return led_cdev; } -/** - * of_led_get() - request a LED device via the LED framework - * @np: device node to get the LED device from - * @index: the index of the LED - * - * Returns the LED device parsed from the phandle specified in the "leds" - * property of a device tree node or a negative error-code on failure. - */ -struct led_classdev *of_led_get(struct device_node *np, int index) +static struct led_classdev *__of_led_get(struct device_node *np, int index, + const char *name) { struct device *led_dev; struct device_node *led_node; + /* + * For named LEDs, first look up the name in the "leds-names" property. + * If it cannot be found, then of_parse_phandle() will propagate the error. + */ + if (name) + index = of_property_match_string(np, "leds-names", name); led_node = of_parse_phandle(np, "leds", index); if (!led_node) return ERR_PTR(-ENOENT); @@ -254,6 +253,19 @@ struct led_classdev *of_led_get(struct device_node *np, int index) return __led_get(led_dev); } + +/** + * of_led_get() - request a LED device via the LED framework + * @np: device node to get the LED device from + * @index: the index of the LED + * + * Returns the LED device parsed from the phandle specified in the "leds" + * property of a device tree node or a negative error-code on failure. + */ +struct led_classdev *of_led_get(struct device_node *np, int index) +{ + return __of_led_get(np, index, NULL); +} EXPORT_SYMBOL_GPL(of_led_get); /**