From patchwork Thu Apr 10 12:25:46 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Boris BREZILLON X-Patchwork-Id: 3964081 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 4C2A0BFF02 for ; Thu, 10 Apr 2014 18:26:07 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 82D542082F for ; Thu, 10 Apr 2014 18:26:06 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9347F20824 for ; Thu, 10 Apr 2014 18:26:05 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WYJfC-0007C3-No; Thu, 10 Apr 2014 18:25:26 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WYJf7-0001e2-KY; Thu, 10 Apr 2014 18:25:21 +0000 Received: from casper.infradead.org ([2001:770:15f::2]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WYJeF-0001cB-NO for linux-arm-kernel@merlin.infradead.org; Thu, 10 Apr 2014 18:24:30 +0000 Received: from top.free-electrons.com ([176.31.233.9] helo=mail.free-electrons.com) by casper.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WYE3f-0002C9-GF for linux-arm-kernel@lists.infradead.org; Thu, 10 Apr 2014 12:26:21 +0000 Received: by mail.free-electrons.com (Postfix, from userid 106) id EA1C6912; Thu, 10 Apr 2014 14:25:58 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-4.8 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from localhost.localdomain (col31-4-88-188-83-94.fbx.proxad.net [88.188.83.94]) by mail.free-electrons.com (Postfix) with ESMTPSA id 216977B3; Thu, 10 Apr 2014 14:25:58 +0200 (CEST) From: Boris BREZILLON To: Randy Dunlap , Maxime Ripard , =?UTF-8?q?Emilio=20L=C3=B3pez?= , Mike Turquette , Linus Walleij , Chen-Yu Tsai , Hans de Goede Subject: [PATCH v2 4/5] pinctrl: sunxi: add reset control support Date: Thu, 10 Apr 2014 14:25:46 +0200 Message-Id: <1397132747-13917-5-git-send-email-boris.brezillon@free-electrons.com> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1397132747-13917-1-git-send-email-boris.brezillon@free-electrons.com> References: <1397132747-13917-1-git-send-email-boris.brezillon@free-electrons.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140410_132619_619365_80D7DA73 X-CRM114-Status: GOOD ( 14.07 ) X-Spam-Score: -1.5 (-) Cc: devicetree@vger.kernel.org, linux-doc@vger.kernel.org, dev@linux-sunxi.org, Boris BREZILLON , linux-kernel@vger.kernel.org, Shuge , kevin@allwinnertech.com, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 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 The A31 SoC define a reset line for the R_PIO block which needs to be deasserted for the pin controller to be usable. Try to retrieve a reset line and deassert if one was found. Signed-off-by: Boris BREZILLON --- drivers/pinctrl/pinctrl-sunxi.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/pinctrl/pinctrl-sunxi.c b/drivers/pinctrl/pinctrl-sunxi.c index ee62027..b752495 100644 --- a/drivers/pinctrl/pinctrl-sunxi.c +++ b/drivers/pinctrl/pinctrl-sunxi.c @@ -26,6 +26,7 @@ #include #include #include +#include #include #include "core.h" @@ -792,6 +793,7 @@ static int sunxi_pinctrl_probe(struct platform_device *pdev) const struct of_device_id *device; struct pinctrl_pin_desc *pins; struct sunxi_pinctrl *pctl; + struct reset_control *rstc; int i, ret, last_pin; struct clk *clk; @@ -885,6 +887,13 @@ static int sunxi_pinctrl_probe(struct platform_device *pdev) clk_prepare_enable(clk); + rstc = devm_reset_control_get(&pdev->dev, NULL); + if (!IS_ERR(rstc)) { + ret = reset_control_deassert(rstc); + if (ret) + goto gpiochip_error; + } + pctl->irq = irq_of_parse_and_map(node, 0); if (!pctl->irq) { ret = -EINVAL;