From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,T_DKIMWL_WL_HIGH,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 82E1DC28CC3 for ; Fri, 7 Jun 2019 08:29:47 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 56033212F5 for ; Fri, 7 Jun 2019 08:29:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="fOuBtGck"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="h368Vx+b" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 56033212F5 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=Y5K6OO2EN7Xi9PAT2pN33oxQyhs4h5Bx7ekx7d49GvI=; b=fOuBtGckqYSMtRvJeT9CJvVHcB cjuJ2zr01XBuv/YImgAqzfVyjECSr/y2+Ow6GliaubdytQnIf3cBEDvcr6Ero+uWjg5uGDekiOr8j mMwVz3Jn1PVTYYP/81ATUgfiEYd0RKK1eBaKSSo8pwhDedWmCEW0PFN879PL5CvqsW74B+6inhAdT JgiNz3N8fZJ62IofHwoAsbAR19S3+DYxLZ5zwsnbLOR5eB5E9aXVoJTt6K14CsOXSvpn24auQkM9P gCjpP1tOep7IprzxQLVbvyk9m5k6/WMcgOvAJLwKStieUPb0L6PF/uCfACHaG/qsh6bsbWVLEsqTa GUj5G1xA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hZAFq-0008OI-Gh; Fri, 07 Jun 2019 08:29:42 +0000 Received: from mail-wr1-x442.google.com ([2a00:1450:4864:20::442]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hZAFG-0007u0-Vm for linux-arm-kernel@lists.infradead.org; Fri, 07 Jun 2019 08:29:08 +0000 Received: by mail-wr1-x442.google.com with SMTP id x4so1230883wrt.6 for ; Fri, 07 Jun 2019 01:29:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=slZHnEyI/3MoxuWJDHsmJjpXD82N/IlcEekyL2S9VGE=; b=h368Vx+bZLWr0EL6gvHppBTRSD6ciSTtbA08qgE1t4taX1ccezuX+R++aXgYdUyb8y xqoTAMMnzsmDvOSRVcoiqE2DFyL7TAalaemw43t6ANajvZ6wL8XrTBPrSPCTaI37JOuC C+5L9vX/X5BqHwAWrn/zEo5FE4WFb8KPgNsOOUzOOniHj63Dv+LyXOscl8dFK8OY1u1o E/HW76TPKlwVq8tS/VJKvSGDMVvLLxyzlkHBehpsvVoeNsfJs8g8ByEL/eJhJVNJIndQ NPfMFhvNB2TjUGWQBnh8Zme9lqz8vUpZd67SuV+J3hkfi1YClwo9647sqAdkVGU2KAHa w/Bg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=slZHnEyI/3MoxuWJDHsmJjpXD82N/IlcEekyL2S9VGE=; b=NpxxUyeHu5vPLwMzeW/3g7MLnNqghhPas38S6fHJ8Bfkx1wqGS0cNyJRYkJqYjONBb djHDM/jBVbPoAWEM8e96uhpppfYrtOjr/cCYmzxi0un8u/TV/6KYYKue/ZAHUOZhuqLS KRL6Pb5WlkfBxqcWOj+Kya1ZDilem7j1YBNGpAWko32GILO+XkGOaoHorUGuJMsXofXE ITpCuaY4WiVfKJH3z3ps/PHiVEz4bg4FTuw/QAMdhv/rS7q9ipQVziMlEgCFwh4sIZZ/ whVlyMjfgQ78AmCl2tWIxuKF4cdtglKcSP+7r9tXxP36d9O1rUdnZmhW0kCZQv+Tig33 PtRg== X-Gm-Message-State: APjAAAVFIPHgaOZWisHF/QHSsTMvGPR96EsEBXmTgNkT1NcRrs4QiYJt /9lVUSk4/l57saoft4M29n5aYw== X-Google-Smtp-Source: APXvYqxA6VZBIpKaCLm8h8+cRTckg6NGyIemaL7IeDtLMQhELQn4vSQSFHuHPVMnZWXnr8oeR8248g== X-Received: by 2002:a5d:5702:: with SMTP id a2mr370680wrv.89.1559896145359; Fri, 07 Jun 2019 01:29:05 -0700 (PDT) Received: from localhost.localdomain ([2.31.167.229]) by smtp.gmail.com with ESMTPSA id a3sm1092946wmb.35.2019.06.07.01.29.04 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 07 Jun 2019 01:29:04 -0700 (PDT) From: Lee Jones To: alokc@codeaurora.org, andy.gross@linaro.org, david.brown@linaro.org, wsa+renesas@sang-engineering.com, bjorn.andersson@linaro.org, linus.walleij@linaro.org, balbi@kernel.org, gregkh@linuxfoundation.org Subject: [PATCH v2 3/8] pinctrl: msm: Add ability for drivers to supply a reserved GPIO list Date: Fri, 7 Jun 2019 09:28:56 +0100 Message-Id: <20190607082901.6491-3-lee.jones@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190607082901.6491-1-lee.jones@linaro.org> References: <20190607082901.6491-1-lee.jones@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190607_012907_022568_30BC9B06 X-CRM114-Status: GOOD ( 16.02 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-i2c@vger.kernel.org, jlhugo@gmail.com, Lee Jones , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org When booting MSM based platforms with Device Tree or some ACPI implementations, it is possible to provide a list of reserved pins via the 'gpio-reserved-ranges' and 'gpios' properties respectively. However some ACPI tables are not populated with this information, thus it has to come from a knowledgable device driver instead. Here we provide the MSM common driver with additional support to parse this informtion and correctly populate the widely used 'valid_mask'. Signed-off-by: Lee Jones --- drivers/pinctrl/qcom/pinctrl-msm.c | 18 ++++++++++++++++++ drivers/pinctrl/qcom/pinctrl-msm.h | 1 + 2 files changed, 19 insertions(+) diff --git a/drivers/pinctrl/qcom/pinctrl-msm.c b/drivers/pinctrl/qcom/pinctrl-msm.c index ee8119879c4c..3ac740b36508 100644 --- a/drivers/pinctrl/qcom/pinctrl-msm.c +++ b/drivers/pinctrl/qcom/pinctrl-msm.c @@ -607,8 +607,23 @@ static int msm_gpio_init_valid_mask(struct gpio_chip *chip) int ret; unsigned int len, i; unsigned int max_gpios = pctrl->soc->ngpios; + const int *reserved = pctrl->soc->reserved_gpios; u16 *tmp; + /* Driver provided reserved list overrides DT and ACPI */ + if (reserved) { + bitmap_fill(chip->valid_mask, max_gpios); + for (i = 0; reserved[i] >= 0; i++) { + if (i >= max_gpios || reserved[i] >= max_gpios) { + dev_err(pctrl->dev, "invalid list of reserved GPIOs\n"); + return -EINVAL; + } + clear_bit(reserved[i], chip->valid_mask); + } + + return 0; + } + /* The number of GPIOs in the ACPI tables */ len = ret = device_property_read_u16_array(pctrl->dev, "gpios", NULL, 0); @@ -964,6 +979,9 @@ static void msm_gpio_irq_handler(struct irq_desc *desc) static bool msm_gpio_needs_valid_mask(struct msm_pinctrl *pctrl) { + if (pctrl->soc->reserved_gpios) + return true; + return device_property_read_u16_array(pctrl->dev, "gpios", NULL, 0) > 0; } diff --git a/drivers/pinctrl/qcom/pinctrl-msm.h b/drivers/pinctrl/qcom/pinctrl-msm.h index c12048e54a6f..23b93ae92269 100644 --- a/drivers/pinctrl/qcom/pinctrl-msm.h +++ b/drivers/pinctrl/qcom/pinctrl-msm.h @@ -121,6 +121,7 @@ struct msm_pinctrl_soc_data { bool pull_no_keeper; const char *const *tiles; unsigned int ntiles; + const int *reserved_gpios; }; extern const struct dev_pm_ops msm_pinctrl_dev_pm_ops; -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel