From patchwork Tue Mar 8 10:09:47 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen-Yu Tsai X-Patchwork-Id: 12773435 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id CDCB6C433EF for ; Tue, 8 Mar 2022 10:19:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Epc/SElJgsoJpfvf+6CXXca/gi//SZTc5UCV7Bg1H2M=; b=h//x7wrwDa6Tsw +B5sFTiLljG47jRXzSV7fUF8ZgeVjSdN6M5nMddMSiXynZiLGtWRel7HjPhpsaRUlC9luxdnefWi9 ckzibpmjdPEFBNoqnMDwPiDtZtxX1fo7NWwswG8m4prBJ/EgfAeRwtRGO13Zv3mTnuRe9O+C3I70N DMjO/52hq4P6IeLBqwsdwOGrQ251Yfj1YLjnu+Kja/BCuhsmjDqpSN0e+D25ZPod77u1yXa96s2zj oY4KfNdQVMX/3VpUbyzgoGwdQyjaG+I+HW9b2jlH49IepDp5mmpXwfmGftOR0IkFzRInmdvxcmYF6 kE+HESuYjEbg/6+JVVkw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nRWuz-003n9x-Fa; Tue, 08 Mar 2022 10:18:14 +0000 Received: from mail-pl1-x62e.google.com ([2607:f8b0:4864:20::62e]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nRWnC-003k4N-6p for linux-arm-kernel@lists.infradead.org; Tue, 08 Mar 2022 10:10:11 +0000 Received: by mail-pl1-x62e.google.com with SMTP id e2so16606845pls.10 for ; Tue, 08 Mar 2022 02:10:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=noEqkBf5xzBolmnhdQPfwHD82qaYeiB8/RXOxn1DB2I=; b=PsIwM301p+zkfVPLNMuBY2fgeZYi4j+IGcIxp8lP2wQofQwsTA/SANTTxjG0S8RTAK Zz2rcqgxCgmmwveXGiLhoaqoV9LC4rAO+jCp0lqq4wCXA5PSkdUzbpTufzwn7Ap3iPbQ jmIKa5JsZRMgNuNQeXZh1sXnjbhE/kmJF87vk= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=noEqkBf5xzBolmnhdQPfwHD82qaYeiB8/RXOxn1DB2I=; b=V6TQAgGR9ZpmvaH7oKbE6b29Lz0fOUT3lSHBD+WrkrCUgQGd1qpppBe1Yw1urUNMoY ucn2eu0ewINb33ykxFvebUN7Vky2ZOF+52wU1nuVTm43r3SD0DDjz5jR5RphyKPA5glY bKfn4+lwA1rCb0TFF4wg/QJ/OTv808kfRybpCHFco6nlL1lXoeV45T86fNToYhIJM2OS Wf0iRYgFueG4v08kjeqMNq8CfO3gM2T5VnVKhjuTUaxa0/SOabSeEmi/VMGknhTaT/9f boXowUZMMXtWUjDgSJN5loxEflMqZPf0jYLqojxKlPVPsHTpm5LcaQ8h7RZWylMfARUy d4SQ== X-Gm-Message-State: AOAM532P1/Cc1GV62JK6EhV/yDcv1UjyxZOj9ZQ0Ya8yYkWJoOj+W/xu ImM4GLZ3+4MqvzEUgLGnnLikQQ== X-Google-Smtp-Source: ABdhPJwMnsLSH0Ugh0kYJjqmbKgwtim8f6qXQsngF85UoO3kJmueeC/GVPnsmGoroD8ZfCxe30PFag== X-Received: by 2002:a17:903:2350:b0:151:e633:7479 with SMTP id c16-20020a170903235000b00151e6337479mr10346038plh.74.1646734208964; Tue, 08 Mar 2022 02:10:08 -0800 (PST) Received: from wenstp920.tpe.corp.google.com ([2401:fa00:1:10:73f8:5e3f:6894:8f44]) by smtp.gmail.com with ESMTPSA id k19-20020a056a00135300b004f734327960sm1707553pfu.106.2022.03.08.02.10.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Mar 2022 02:10:08 -0800 (PST) From: Chen-Yu Tsai To: Sean Wang , Linus Walleij , Matthias Brugger Cc: Chen-Yu Tsai , linux-mediatek@lists.infradead.org, linux-gpio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, AngeloGioacchino Del Regno Subject: [PATCH v2 02/11] pinctrl: mediatek: paris: Fix PIN_CONFIG_BIAS_* readback Date: Tue, 8 Mar 2022 18:09:47 +0800 Message-Id: <20220308100956.2750295-3-wenst@chromium.org> X-Mailer: git-send-email 2.35.1.616.g0bdcbb4464-goog In-Reply-To: <20220308100956.2750295-1-wenst@chromium.org> References: <20220308100956.2750295-1-wenst@chromium.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220308_021010_278123_160A6C28 X-CRM114-Status: GOOD ( 15.01 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org When reading back pin bias settings, if the pin is not in the corresponding bias state, the function should return -EINVAL. Fix this in the mediatek-paris pinctrl library so that the read back state is not littered with bogus a "input bias disabled" combined with "pull up" or "pull down" states. Fixes: 805250982bb5 ("pinctrl: mediatek: add pinctrl-paris that implements the vendor dt-bindings") Signed-off-by: Chen-Yu Tsai Reviewed-by: AngeloGioacchino Del Regno --- drivers/pinctrl/mediatek/pinctrl-paris.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-) diff --git a/drivers/pinctrl/mediatek/pinctrl-paris.c b/drivers/pinctrl/mediatek/pinctrl-paris.c index f9f9110f2107..7037560ecda9 100644 --- a/drivers/pinctrl/mediatek/pinctrl-paris.c +++ b/drivers/pinctrl/mediatek/pinctrl-paris.c @@ -96,20 +96,16 @@ static int mtk_pinconf_get(struct pinctrl_dev *pctldev, err = hw->soc->bias_get_combo(hw, desc, &pullup, &ret); if (err) goto out; + if (ret == MTK_PUPD_SET_R1R0_00) + ret = MTK_DISABLE; if (param == PIN_CONFIG_BIAS_DISABLE) { - if (ret == MTK_PUPD_SET_R1R0_00) - ret = MTK_DISABLE; + if (ret != MTK_DISABLE) + err = -EINVAL; } else if (param == PIN_CONFIG_BIAS_PULL_UP) { - /* When desire to get pull-up value, return - * error if current setting is pull-down - */ - if (!pullup) + if (!pullup || ret == MTK_DISABLE) err = -EINVAL; } else if (param == PIN_CONFIG_BIAS_PULL_DOWN) { - /* When desire to get pull-down value, return - * error if current setting is pull-up - */ - if (pullup) + if (pullup || ret == MTK_DISABLE) err = -EINVAL; } } else {