From patchwork Fri Mar 19 18:15:08 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Marangi X-Patchwork-Id: 404857 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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 E8B07C433F8 for ; Fri, 19 Mar 2021 18:16:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CBDBC6199B for ; Fri, 19 Mar 2021 18:16:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230393AbhCSSP6 (ORCPT ); Fri, 19 Mar 2021 14:15:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47762 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230096AbhCSSPd (ORCPT ); Fri, 19 Mar 2021 14:15:33 -0400 Received: from mail-ej1-x634.google.com (mail-ej1-x634.google.com [IPv6:2a00:1450:4864:20::634]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1F771C06174A; Fri, 19 Mar 2021 11:15:33 -0700 (PDT) Received: by mail-ej1-x634.google.com with SMTP id r12so11198929ejr.5; Fri, 19 Mar 2021 11:15:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=JB/0ftcOjq9+74oC8IThoTALbFw94cd5VKg5MgqN4Pk=; b=SRc693H7ZgGhNga1rtb3J5AceNhvVJizMEl8s6EO0J/X5Z/pRCd5WkjchI1Okex5e0 7321d/VhkZfIlvBCT0l6OYZ6cPaXDQyKZepZvXbBtt2uMFbl9pCSJRh0AYTVu/cYjQTy 8W47OdbLa2TkJsOn5a2LTfXZPlAHCrdHN8Mp0PvrCacTi21e2wAYdLzj+U9oV74RmUnd OKuy3o+8uGpzlytDF+nI7Uw/CMRnuxDo1RzRyXSs7uTFYiQprxkcp8z+n8VaN85XTRjn 1DnA0HTGgxjOE+GQba2s97Hy8T3P/2V+KsvO9B8/Ub55xVMrMlVfcDHe4fvTppMyZRa3 BIDg== 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:mime-version:content-transfer-encoding; bh=JB/0ftcOjq9+74oC8IThoTALbFw94cd5VKg5MgqN4Pk=; b=Q8Qz0fRWYGjylMpmOquZr1IQWOvnnAvFmzLjkm1AnAvn4ugFRocYsVwUvEXbNJm5j+ d5tz2V7244ZLFja0PhTAMibvdVKkqooTbvOY41BOqQki+RyQs/+y7SW4iMVvHck4SW55 SYtRLJ14TwhasUW3iREp7XKHSAFsYEbe0sqCaKp8BBdhj4w8OcqQUW406+3/U29xUWPJ AZmWFxp++K+n9Q/lNFY+nY/zpk7U9plx6u+Nhm7Xq+2eZAKZOiso0yav7vX+rmCv3jHN PTm3aoU27yZY7N69pbMvCBlLP0REqlIJfiNGUmVSDpGB0FCBKU9DOJmQSr6QDhWj9U0G r6Gg== X-Gm-Message-State: AOAM531dZWESSU/k9sjkQgeIYlG0ZbghItREkxT3n2RMTuLTz0ufFOPS Ijcy22DUyclhvvwDWIg5Ijc= X-Google-Smtp-Source: ABdhPJzQbJlHakNck3Cud33+SWwjJ+hk4THiuV3vj43fjCO/Pn9881zCt8pPuFVbAfXvp9fVVy2Ftg== X-Received: by 2002:a17:906:23e9:: with SMTP id j9mr5699812ejg.78.1616177731774; Fri, 19 Mar 2021 11:15:31 -0700 (PDT) Received: from Ansuel-xps.localdomain (host-79-34-220-97.business.telecomitalia.it. [79.34.220.97]) by smtp.googlemail.com with ESMTPSA id u13sm4170288ejn.59.2021.03.19.11.15.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 19 Mar 2021 11:15:31 -0700 (PDT) From: Ansuel Smith To: Thara Gopinath Cc: Ansuel Smith , Andy Gross , Bjorn Andersson , Amit Kucheria , Zhang Rui , Daniel Lezcano , Rob Herring , linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v12 5/9] drivers: thermal: tsens: Fix bug in sensor enable for msm8960 Date: Fri, 19 Mar 2021 19:15:08 +0100 Message-Id: <20210319181512.7757-6-ansuelsmth@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210319181512.7757-1-ansuelsmth@gmail.com> References: <20210319181512.7757-1-ansuelsmth@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Device based on tsens VER_0 contains a hardware bug that results in some problem with sensor enablement. Sensor id 6-11 can't be enabled selectively and all of them must be enabled in one step. Signed-off-by: Ansuel Smith --- drivers/thermal/qcom/tsens-8960.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) diff --git a/drivers/thermal/qcom/tsens-8960.c b/drivers/thermal/qcom/tsens-8960.c index 86585f439985..bf8dfaf06428 100644 --- a/drivers/thermal/qcom/tsens-8960.c +++ b/drivers/thermal/qcom/tsens-8960.c @@ -27,9 +27,9 @@ #define EN BIT(0) #define SW_RST BIT(1) #define SENSOR0_EN BIT(3) +#define MEASURE_PERIOD BIT(18) #define SLP_CLK_ENA BIT(26) #define SLP_CLK_ENA_8660 BIT(24) -#define MEASURE_PERIOD 1 #define SENSOR0_SHIFT 3 /* INT_STATUS_ADDR bitmasks */ @@ -126,17 +126,34 @@ static int resume_8960(struct tsens_priv *priv) static int enable_8960(struct tsens_priv *priv, int id) { int ret; - u32 reg, mask; + u32 reg, mask = BIT(id); ret = regmap_read(priv->tm_map, CNTL_ADDR, ®); if (ret) return ret; - mask = BIT(id + SENSOR0_SHIFT); + /* HARDWARE BUG: + * On platform with more than 6 sensors, all the remaining + * sensors needs to be enabled all togheder or underfined + * results are expected. (Sensor 6-7 disabled, Sensor 3 + * disabled...) In the original driver, all the sensors + * are enabled in one step hence this bug is not triggered. + */ + if (id > 5) + mask = GENMASK(10, 6); + + mask <<= SENSOR0_SHIFT; + + /* Sensors already enabled. Skip. */ + if ((reg & mask) == mask) + return 0; + ret = regmap_write(priv->tm_map, CNTL_ADDR, reg | SW_RST); if (ret) return ret; + reg |= MEASURE_PERIOD; + if (priv->num_sensors > 1) reg |= mask | SLP_CLK_ENA | EN; else