From patchwork Thu Apr 10 13:52:45 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Boris BREZILLON X-Patchwork-Id: 3963991 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 78EAB9F374 for ; Thu, 10 Apr 2014 18:02:54 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 9355420351 for ; Thu, 10 Apr 2014 18:02:53 +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 91FF62011E for ; Thu, 10 Apr 2014 18:02:52 +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 1WYJGB-0006N9-Sp; Thu, 10 Apr 2014 17:59:37 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WYJFi-0000MK-Ci; Thu, 10 Apr 2014 17:59:06 +0000 Received: from bombadil.infradead.org ([2001:1868:205::9]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WYHqa-00067y-0r for linux-arm-kernel@merlin.infradead.org; Thu, 10 Apr 2014 16:29:04 +0000 Received: from top.free-electrons.com ([176.31.233.9] helo=mail.free-electrons.com) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WYFRE-0006Ri-4b for linux-arm-kernel@lists.infradead.org; Thu, 10 Apr 2014 13:54:44 +0000 Received: by mail.free-electrons.com (Postfix, from userid 106) id 9CB63912; Thu, 10 Apr 2014 15:54:00 +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 BD520986; Thu, 10 Apr 2014 15:53:59 +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 v3 6/7] pinctrl: sunxi: add reset control support Date: Thu, 10 Apr 2014 15:52:45 +0200 Message-Id: <1397137966-30818-7-git-send-email-boris.brezillon@free-electrons.com> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1397137966-30818-1-git-send-email-boris.brezillon@free-electrons.com> References: <1397137966-30818-1-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_065444_327961_1ABC5A4F X-CRM114-Status: GOOD ( 14.17 ) X-Spam-Score: 0.4 (/) 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. Try to retrieve a reset control and deassert if one was found. Signed-off-by: Boris BREZILLON Acked-by: Maxime Ripard --- drivers/pinctrl/pinctrl-sunxi.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/pinctrl/pinctrl-sunxi.c b/drivers/pinctrl/pinctrl-sunxi.c index 17b5f80..07af35a 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; @@ -887,10 +889,17 @@ static int sunxi_pinctrl_probe(struct platform_device *pdev) if (ret) goto gpiochip_error; + rstc = devm_reset_control_get_optional(&pdev->dev, NULL); + if (!IS_ERR(rstc)) { + ret = reset_control_deassert(rstc); + if (ret) + goto clk_error; + } + pctl->irq = irq_of_parse_and_map(node, 0); if (!pctl->irq) { ret = -EINVAL; - goto clk_error; + goto rstc_error; } pctl->domain = irq_domain_add_linear(node, SUNXI_IRQ_NUMBER, @@ -898,7 +907,7 @@ static int sunxi_pinctrl_probe(struct platform_device *pdev) if (!pctl->domain) { dev_err(&pdev->dev, "Couldn't register IRQ domain\n"); ret = -ENOMEM; - goto clk_error; + goto rstc_error; } for (i = 0; i < SUNXI_IRQ_NUMBER; i++) { @@ -916,6 +925,9 @@ static int sunxi_pinctrl_probe(struct platform_device *pdev) return 0; +rstc_error: + if (!IS_ERR(rstc)) + reset_control_assert(rstc); clk_error: clk_disable_unprepare(clk); gpiochip_error: