From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EDD29C433E0 for ; Mon, 15 Jun 2020 15:06:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CD1072074D for ; Mon, 15 Jun 2020 15:06:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730829AbgFOPFy (ORCPT ); Mon, 15 Jun 2020 11:05:54 -0400 Received: from mga11.intel.com ([192.55.52.93]:44017 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730936AbgFOPFw (ORCPT ); Mon, 15 Jun 2020 11:05:52 -0400 IronPort-SDR: PmKJ/bqX1hnNle0bZ16nBjAvo7xxunIBQm8ReMO5DAR2n2AH9G+t66CUyKI5ajQvJJuUYwMk41 1wbh2rHYXxWA== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Jun 2020 08:05:50 -0700 IronPort-SDR: rgYlEmvlyFrPhXeBlLqAAA84/xJijD93yqnpaUrAnFDTvCTCKlTE1b2Qw8yiidZMOmfUKweHmm 9HY2/uoG4QgQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,514,1583222400"; d="scan'208";a="276588005" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga006.jf.intel.com with ESMTP; 15 Jun 2020 08:05:48 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id E7B9092; Mon, 15 Jun 2020 18:05:46 +0300 (EEST) From: Andy Shevchenko To: Linus Walleij , Bartosz Golaszewski , linux-gpio@vger.kernel.org Cc: Andy Shevchenko Subject: [PATCH v1 1/5] gpiolib: Introduce for_each_requested_gpio_in_range() macro Date: Mon, 15 Jun 2020 18:05:41 +0300 Message-Id: <20200615150545.87964-2-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.27.0.rc2 In-Reply-To: <20200615150545.87964-1-andriy.shevchenko@linux.intel.com> References: <20200615150545.87964-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Introduce for_each_requested_gpio_in_range() macro which helps to iterate over requested GPIO in a range. There are already potential users of it, which are going to be converted by the following patches. For most of them for_each_requested_gpio() shortcut has been added. Signed-off-by: Andy Shevchenko --- include/linux/gpio/driver.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index 4d949e82fd19..b0402f884999 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -474,6 +474,22 @@ struct gpio_chip { extern const char *gpiochip_is_requested(struct gpio_chip *gc, unsigned int offset); +/** + * for_each_requested_gpio_in_range - iterates over requested GPIOs in a given range + * @chip: the chip to query + * @i: loop variable + * @base: first GPIO in the range + * @size: amount of GPIOs to check starting from @base + * @label: label of current GPIO + */ +#define for_each_requested_gpio_in_range(chip, i, base, size, label) \ + for (i = 0; i < size; i++) \ + if ((label = gpiochip_is_requested(chip, base + i)) == NULL) {} else + +/* Iterates over all requested GPIO of the given @chip */ +#define for_each_requested_gpio(chip, i, label) \ + for_each_requested_gpio_in_range(chip, i, 0, chip->ngpio, label) + /* add/remove chips */ extern int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data, struct lock_class_key *lock_key, -- 2.27.0.rc2