From patchwork Fri Aug 19 22:10:15 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vladimir Zapolskiy X-Patchwork-Id: 9291265 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 92EE66077B for ; Fri, 19 Aug 2016 22:15:27 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8969229580 for ; Fri, 19 Aug 2016 22:15:27 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7DA11295C0; Fri, 19 Aug 2016 22:15:27 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 1244129580 for ; Fri, 19 Aug 2016 22:15:27 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1bas2T-0005Pf-TJ; Fri, 19 Aug 2016 22:13:21 +0000 Received: from relay1.mentorg.com ([192.94.38.131]) by bombadil.infradead.org with esmtps (Exim 4.85_2 #1 (Red Hat Linux)) id 1barzy-0003Ef-QQ for linux-arm-kernel@lists.infradead.org; Fri, 19 Aug 2016 22:10:50 +0000 Received: from nat-ies.mentorg.com ([192.94.31.2] helo=SVR-IES-FEM-01.mgc.mentorg.com) by relay1.mentorg.com with esmtp id 1barzg-00053H-CM from Vladimir_Zapolskiy@mentor.com ; Fri, 19 Aug 2016 15:10:28 -0700 Received: from eyas.local (137.202.0.76) by SVR-IES-FEM-01.mgc.mentorg.com (137.202.0.104) with Microsoft SMTP Server (TLS) id 14.3.224.2; Fri, 19 Aug 2016 23:10:26 +0100 From: Vladimir Zapolskiy To: Linus Walleij , Shawn Guo , Sascha Hauer , Fabio Estevam , Philipp Zabel , Deepak Das Subject: [PATCH 3/3] gpio: mxc: add generic gpio request/free callbacks to pinctrl Date: Sat, 20 Aug 2016 01:10:15 +0300 Message-ID: <1471644615-10320-4-git-send-email-vladimir_zapolskiy@mentor.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1471644615-10320-1-git-send-email-vladimir_zapolskiy@mentor.com> References: <1471644615-10320-1-git-send-email-vladimir_zapolskiy@mentor.com> MIME-Version: 1.0 X-Originating-IP: [137.202.0.76] X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160819_151047_301864_500FFD7C X-CRM114-Status: UNSURE ( 8.74 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-gpio@vger.kernel.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP If a GPIO controller description in board DTB contains information about mappings between GPIOs and pads under IOMUX control use it to request and free GPIOs with respect to pinctrl/pinmux subsystems. One of immediate positive functional changes is inability to request non-existing GPIOs, i.e. if there is no pad such. Also pinctrl/pinmux may now properly account pads occupied by requested GPIOs. The change has no effect, if "gpio-ranges" property is not found including the case if a board has no DTB firmware. Signed-off-by: Vladimir Zapolskiy --- drivers/gpio/gpio-mxc.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c index 1f0deb7d3380..342f34f90bbd 100644 --- a/drivers/gpio/gpio-mxc.c +++ b/drivers/gpio/gpio-mxc.c @@ -458,6 +458,11 @@ static int mxc_gpio_probe(struct platform_device *pdev) if (err) goto out_bgio; + if (of_property_read_bool(np, "gpio-ranges")) { + port->gc.request = gpiochip_generic_request; + port->gc.free = gpiochip_generic_free; + } + port->gc.to_irq = mxc_gpio_to_irq; port->gc.base = (pdev->id < 0) ? of_alias_get_id(np, "gpio") * 32 : pdev->id * 32;