From patchwork Fri Aug 12 22:54:53 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephen Warren X-Patchwork-Id: 1062312 Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by demeter2.kernel.org (8.14.4/8.14.4) with ESMTP id p7CMw6e6008896 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Fri, 12 Aug 2011 22:58:27 GMT Received: from canuck.infradead.org ([134.117.69.58]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1Qs0fc-0005ge-PA; Fri, 12 Aug 2011 22:57:41 +0000 Received: from localhost ([127.0.0.1] helo=canuck.infradead.org) by canuck.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1Qs0fb-0000Au-GI; Fri, 12 Aug 2011 22:57:39 +0000 Received: from avon.wwwdotorg.org ([2001:470:1f0f:bd7::2]) by canuck.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1Qs0dO-00083P-LO for linux-arm-kernel@lists.infradead.org; Fri, 12 Aug 2011 22:55:24 +0000 Received: from severn.wwwdotorg.org (unknown [192.168.65.5]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by avon.wwwdotorg.org (Postfix) with ESMTPS id ACB9A6352; Fri, 12 Aug 2011 16:56:24 -0600 (MDT) Received: from localhost.localdomain (searspoint.nvidia.com [216.228.112.21]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by severn.wwwdotorg.org (Postfix) with ESMTPSA id C9D4FE4105; Fri, 12 Aug 2011 16:55:19 -0600 (MDT) From: Stephen Warren To: Grant Likely , Colin Cross , Erik Gilling , Olof Johansson Subject: [RFC PATCH 08/12] gpio/tegra: Add device tree support Date: Fri, 12 Aug 2011 16:54:53 -0600 Message-Id: <1313189697-21287-9-git-send-email-swarren@nvidia.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1313189697-21287-1-git-send-email-swarren@nvidia.com> References: <1313189697-21287-1-git-send-email-swarren@nvidia.com> X-Virus-Scanned: clamav-milter 0.96.5 at avon.wwwdotorg.org X-Virus-Status: Clean X-CRM114-Version: 20090807-BlameThorstenAndJenny ( TRE 0.7.6 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20110812_185522_968994_19CAE72C X-CRM114-Status: GOOD ( 16.01 ) X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.3.1 on canuck.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- Cc: Russell King , Arnd Bergmann , devicetree-discuss@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, Stephen Warren , linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter2.kernel.org [140.211.167.43]); Fri, 12 Aug 2011 22:58:27 +0000 (UTC) Signed-off-by: Stephen Warren --- drivers/gpio/gpio-tegra.c | 31 +++++++++++++++++++++++++++++++ 1 files changed, 31 insertions(+), 0 deletions(-) diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c index 4da4839..923b413 100644 --- a/drivers/gpio/gpio-tegra.c +++ b/drivers/gpio/gpio-tegra.c @@ -326,6 +326,29 @@ static struct irq_chip tegra_gpio_irq_chip = { #endif }; +#ifdef CONFIG_OF +static void __init tegra_gpio_probe_dt(struct platform_device *pdev) +{ + const __be32 *gpios; + u32 gpioslen; + int i; + + gpios = of_get_property(pdev->dev.of_node, "nvidia,gpios", &gpioslen); + if (gpios == NULL) + return; + + gpioslen /= sizeof(*gpios); + for (i = 0; i < gpioslen; i++, gpios++) { + u32 gpio = be32_to_cpup(gpios); + dev_err(&pdev->dev, "Enabling GPIO %d\n", gpio); + tegra_gpio_enable(gpio); + } +} +#else +static inline void __init tegra_gpio_probe_dt(struct platform_device *pdev) +{ +} +#endif /* This lock class tells lockdep that GPIO irqs are in a different * category than their parents, so it won't report false recursion. @@ -371,13 +394,21 @@ static int __init tegra_gpio_probe(struct platform_device *pdev) spin_lock_init(&bank->lvl_lock[j]); } + tegra_gpio_probe_dt(pdev); + return 0; } +static struct of_device_id tegra_gpio_of_match[] __devinitdata = { + { .compatible = "nvidia,tegra20-gpio", }, + { }, +}; + static struct platform_driver tegra_gpio_driver = { .driver = { .name = "tegra-gpio", .owner = THIS_MODULE, + .of_match_table = tegra_gpio_of_match, }, .probe = tegra_gpio_probe, };