Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752025AbaGFRr6 (ORCPT ); Sun, 6 Jul 2014 13:47:58 -0400 Received: from mail-pa0-f44.google.com ([209.85.220.44]:43600 "EHLO mail-pa0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751492AbaGFRr4 (ORCPT ); Sun, 6 Jul 2014 13:47:56 -0400 Date: Sun, 6 Jul 2014 23:17:46 +0530 From: Himangi Saraogi To: Linus Walleij , Alexandre Courbot , linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, Randy Dunlap , linux-doc@vger.kernel.org, Liam Girdwood , Mark Brown , Jaroslav Kysela , Takashi Iwai , patches@opensource.wolfsonmicro.com, alsa-devel@alsa-project.org, Eric Miao , Russell King , Haojian Zhuang , linux-arm-kernel@lists.infradead.org, Philipp Zabel , Paul Parsons Cc: julia.lawall@lip6.fr Subject: [PATCH 1/5] gpiolib: devres: Introduce the function devm_request_gpio_array Message-ID: <1a1752ce7455bac8f2505a9790da891a830699f5.1404665589.git.himangi774@gmail.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch introduces the function devm_request_gpio_array that allocates multiple GPIOs in a single call in a managed manner. The function is also included in the documentation and a declaration is added in include/linux/gpio.h. Signed-off-by: Himangi Saraogi --- Documentation/driver-model/devres.txt | 1 + drivers/gpio/devres.c | 21 +++++++++++++++++++++ include/linux/gpio.h | 2 ++ 3 files changed, 24 insertions(+) diff --git a/Documentation/driver-model/devres.txt b/Documentation/driver-model/devres.txt index 9e2098e..756f6cf 100644 --- a/Documentation/driver-model/devres.txt +++ b/Documentation/driver-model/devres.txt @@ -337,6 +337,7 @@ GPIO devm_gpiod_put() devm_gpio_request() devm_gpio_request_one() + devm_gpio_request_array() devm_gpio_free() SND diff --git a/drivers/gpio/devres.c b/drivers/gpio/devres.c index 65978cf..adae7fa 100644 --- a/drivers/gpio/devres.c +++ b/drivers/gpio/devres.c @@ -229,6 +229,27 @@ int devm_gpio_request_one(struct device *dev, unsigned gpio, EXPORT_SYMBOL(devm_gpio_request_one); /** + * devm_gpio_request_array - request multiple GPIOs in a single call + * @dev: device to request for + * @array: array of the 'struct gpio' + * @num: how many GPIOs in the array + */ +int devm_gpio_request_array(struct device *dev, const struct gpio *array, + size_t num) +{ + int i, err; + + for (i = 0; i < num; i++, array++) { + err = devm_gpio_request_one(dev, array->gpio, array->flags, + array->label); + if (err) + return err; + } + return 0; +} +EXPORT_SYMBOL_GPL(devm_gpio_request_array); + +/** * devm_gpio_free - free a GPIO * @dev: device to free GPIO for * @gpio: GPIO to free diff --git a/include/linux/gpio.h b/include/linux/gpio.h index 85aa5d0..c85f243 100644 --- a/include/linux/gpio.h +++ b/include/linux/gpio.h @@ -84,6 +84,8 @@ struct device; int devm_gpio_request(struct device *dev, unsigned gpio, const char *label); int devm_gpio_request_one(struct device *dev, unsigned gpio, unsigned long flags, const char *label); +int devm_gpio_request_array(struct device *dev, const struct gpio *array, + size_t num); void devm_gpio_free(struct device *dev, unsigned int gpio); #else /* ! CONFIG_GPIOLIB */ -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/