From patchwork Wed Sep 25 08:45:53 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 1167046 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=bootlin.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 46dWr213pnz9sPl for ; Wed, 25 Sep 2019 18:46:26 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2442868AbfIYIqK (ORCPT ); Wed, 25 Sep 2019 04:46:10 -0400 Received: from relay5-d.mail.gandi.net ([217.70.183.197]:39921 "EHLO relay5-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2442857AbfIYIqJ (ORCPT ); Wed, 25 Sep 2019 04:46:09 -0400 X-Originating-IP: 86.250.200.211 Received: from localhost.localdomain (lfbn-1-17395-211.w86-250.abo.wanadoo.fr [86.250.200.211]) (Authenticated sender: paul.kocialkowski@bootlin.com) by relay5-d.mail.gandi.net (Postfix) with ESMTPSA id BB9B61C0006; Wed, 25 Sep 2019 08:46:07 +0000 (UTC) From: Paul Kocialkowski To: linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Linus Walleij , Bartosz Golaszewski , Rob Herring , Mark Rutland , Lee Jones , Thomas Petazzoni , Paul Kocialkowski Subject: [PATCH v2 3/5] gpio: syscon: Add support for a custom get operation Date: Wed, 25 Sep 2019 10:45:53 +0200 Message-Id: <20190925084555.147771-4-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20190925084555.147771-1-paul.kocialkowski@bootlin.com> References: <20190925084555.147771-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Some drivers might need a custom get operation to match custom behavior implemented in the set operation. Add plumbing for supporting that. Signed-off-by: Paul Kocialkowski --- drivers/gpio/gpio-syscon.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/gpio/gpio-syscon.c b/drivers/gpio/gpio-syscon.c index 31f332074d7d..05c537ed73f1 100644 --- a/drivers/gpio/gpio-syscon.c +++ b/drivers/gpio/gpio-syscon.c @@ -43,8 +43,9 @@ struct syscon_gpio_data { unsigned int bit_count; unsigned int dat_bit_offset; unsigned int dir_bit_offset; - void (*set)(struct gpio_chip *chip, - unsigned offset, int value); + int (*get)(struct gpio_chip *chip, unsigned offset); + void (*set)(struct gpio_chip *chip, unsigned offset, + int value); }; struct syscon_gpio_priv { @@ -252,7 +253,7 @@ static int syscon_gpio_probe(struct platform_device *pdev) priv->chip.label = dev_name(dev); priv->chip.base = -1; priv->chip.ngpio = priv->data->bit_count; - priv->chip.get = syscon_gpio_get; + priv->chip.get = priv->data->get ? : syscon_gpio_get; if (priv->data->flags & GPIO_SYSCON_FEAT_IN) priv->chip.direction_input = syscon_gpio_dir_in; if (priv->data->flags & GPIO_SYSCON_FEAT_OUT) {