From patchwork Fri Apr 1 10:35:53 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 12798107 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 362F3C4321E for ; Fri, 1 Apr 2022 10:35:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344194AbiDAKhn (ORCPT ); Fri, 1 Apr 2022 06:37:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41774 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344165AbiDAKhm (ORCPT ); Fri, 1 Apr 2022 06:37:42 -0400 Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F2DAF266B6C; Fri, 1 Apr 2022 03:35:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1648809353; x=1680345353; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=LT/CSy5JpaWUNE3hS0zZPYlM1WwfMM5j7JNnfmfMtD8=; b=lJQOpEmrYk8WMGEd9C2rfI2ezkCErCFVF3+fNgh3Z/NoxOIBqgQdpud7 c4Hb4NyTv5CETsMAJbCHlWwnmQvlObWTG3x8KkPzKEIiW9yv7DjsIC1Wg 3AhroRZzqgr1osD5FjZbtbWU9KDxJ8PSkYXHaCYhJqPieXCU0Y4jkygnE hr1Q7RimpWG54sgBfuc0dSYOq3dwmi3C6GJW9SgJdFDMAzm39SdVMZsWb QBr/Go5Ag4kd7afGmwqEjGIXlmdj79CnkhLF7sCA9TucvswBoSx7qTzVs j1pm7uVtdabmXW48ebieJREw/erW7LtnQUD2YdJiJIaSZC46Qo86IuW38 g==; X-IronPort-AV: E=McAfee;i="6200,9189,10303"; a="257680701" X-IronPort-AV: E=Sophos;i="5.90,227,1643702400"; d="scan'208";a="257680701" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Apr 2022 03:35:52 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.90,227,1643702400"; d="scan'208";a="843133146" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga005.fm.intel.com with ESMTP; 01 Apr 2022 03:35:44 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id AC82A1C3; Fri, 1 Apr 2022 13:36:05 +0300 (EEST) From: Andy Shevchenko To: Qianggui Song , Andy Shevchenko , Geert Uytterhoeven , Krzysztof Kozlowski , Marc Zyngier , Fabien Dessenne , Linus Walleij , linux-gpio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org, openbmc@lists.ozlabs.org, linux-renesas-soc@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com Cc: Neil Armstrong , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Andrew Lunn , Gregory Clement , Sebastian Hesselbarth , Avi Fishman , Tomer Maimon , Tali Perry , Patrick Venture , Nancy Yuen , Benjamin Fair , Tomasz Figa , Sylwester Nawrocki , Alim Akhtar , Maxime Coquelin , Alexandre Torgue , Bartosz Golaszewski , Philipp Zabel Subject: [PATCH v4 02/13] gpiolib: Introduce gpiochip_node_count() helper Date: Fri, 1 Apr 2022 13:35:53 +0300 Message-Id: <20220401103604.8705-3-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220401103604.8705-1-andriy.shevchenko@linux.intel.com> References: <20220401103604.8705-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org The gpiochip_node_count() helper iterates over the device child nodes that have the "gpio-controller" property set. It returns the number of such nodes under a given device. Signed-off-by: Andy Shevchenko Reviewed-by: Geert Uytterhoeven Tested-by: Geert Uytterhoeven Acked-by: Bartosz Golaszewski --- include/linux/gpio/driver.h | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index bfc91f122d5f..12de0b22b4ef 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -755,4 +755,15 @@ static inline void gpiochip_unlock_as_irq(struct gpio_chip *gc, device_for_each_child_node(dev, child) \ if (!fwnode_property_present(child, "gpio-controller")) {} else +static inline unsigned int gpiochip_node_count(struct device *dev) +{ + struct fwnode_handle *child; + unsigned int count = 0; + + for_each_gpiochip_node(dev, child) + count++; + + return count; +} + #endif /* __LINUX_GPIO_DRIVER_H */