From patchwork Sat Jul 17 23:37:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Blumenstingl X-Patchwork-Id: 12384093 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=ham 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 70F20C636CB for ; Sat, 17 Jul 2021 23:37:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4FDBE61153 for ; Sat, 17 Jul 2021 23:37:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231160AbhGQXkh (ORCPT ); Sat, 17 Jul 2021 19:40:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55882 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230400AbhGQXk3 (ORCPT ); Sat, 17 Jul 2021 19:40:29 -0400 Received: from mail-wr1-x433.google.com (mail-wr1-x433.google.com [IPv6:2a00:1450:4864:20::433]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1F1E2C061762; Sat, 17 Jul 2021 16:37:32 -0700 (PDT) Received: by mail-wr1-x433.google.com with SMTP id a13so16488661wrf.10; Sat, 17 Jul 2021 16:37:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=REQGLBJXt02T4HQW9YuEzMSqSjnRxM4DXHv1UWuNok0=; b=d12ID/+85BXhYp5lVxcM3+av/sgR1fUzvi31SIskiUqnbkoZYeOFeiRcMcoEYgztLz FwsxANXuvZ+IT5l9zr/eziTHJmqij97HqEZAUtNb1NTWYoJVLvn5jKvYccf1cJ0pZPEg Okgf3LPve3p+EXVZ86avEGkjxPsWI/Bg82ZVRjOkfYslrhCJaFvYoGRGy1nYef2zKp+Z bUS6ssLrMgOJIgYDOIYaxWgr8Bsnc2IlPl1g2kBuC1GT6sbZlGZcLwyAiSbXUbLbrSMK +gtz+p6TO24EXkceOVg3+3fkfiTlF+eKoro/sj++oLshKXC6gKZFuehJ0kFpDXA2AzeM Aaqg== 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=REQGLBJXt02T4HQW9YuEzMSqSjnRxM4DXHv1UWuNok0=; b=bLfZJaaFz1TTCzkvaYq9WySBes2bQx85IlAXdsDa3MV5cKrd8MD6nz+FNou1ocgcAh wCF/lyev22vy2FGm5PZv6us6OCbnxvIltCA8Bmyfi40tsQUe4QWCuWdbwVJLkGEbmjdV dXXMRZyjVzvt66XEH+aivsAjuEwb8hoENZxxTP2J3/dvGJs2GGaM+vBDXzWNWOo3JL0O 1llQlNnSDhTl7ReiSZKMKlOr4trklHLFZpg4jfiRzL+JZ4VOmtFpzFNYbn4RTvO7cCj0 Ce1ZBSa7llwEEeMx+LTwIhe+V2Nh2+PUnAzeuHssa1Zy7tfvZ+jq1AxhWNJKyet7rb4T 5DtA== X-Gm-Message-State: AOAM5317uaRdnyGxll+2GjgkOT+1kKcxO1JmVBrdANrO9Z9G1ped5zSC dg/lxrZSsAnZQSMDxgV/uPwDfSfJnxE= X-Google-Smtp-Source: ABdhPJyvf4zkAdXPasJYccDCqPa6lAGLKbFDFJmYoATC615OxyRHoI/KcyT2yzw3/QpGo/AYVELy+g== X-Received: by 2002:a5d:59ad:: with SMTP id p13mr21145793wrr.139.1626565050573; Sat, 17 Jul 2021 16:37:30 -0700 (PDT) Received: from localhost.localdomain (dynamic-2a01-0c22-7602-4e00-f22f-74ff-fe21-0725.c22.pool.telefonica.de. [2a01:c22:7602:4e00:f22f:74ff:fe21:725]) by smtp.googlemail.com with ESMTPSA id q7sm12347527wmq.33.2021.07.17.16.37.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 17 Jul 2021 16:37:30 -0700 (PDT) From: Martin Blumenstingl To: linux-iio@vger.kernel.org, linux-amlogic@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, lars@metafoo.de, jic23@kernel.org, Martin Blumenstingl Subject: [PATCH 1/3] iio: adc: meson-saradc: Disable BL30 integration on G12A and newer SoCs Date: Sun, 18 Jul 2021 01:37:16 +0200 Message-Id: <20210717233718.332267-2-martin.blumenstingl@googlemail.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210717233718.332267-1-martin.blumenstingl@googlemail.com> References: <20210717233718.332267-1-martin.blumenstingl@googlemail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org G12A and newer don't use the SAR ADC to read the SoC temperature from within the firmware. Instead there's now a dedicated thermal sensor. Disable the BL30 integration for G12A and newer SoCs to save a few CPU cycles when reading samples. Adding a separate struct meson_sar_adc_data is a good idea anyways because starting with G12A there's some extra registers to read the samples in a simplified way. Signed-off-by: Martin Blumenstingl --- drivers/iio/adc/meson_saradc.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/iio/adc/meson_saradc.c b/drivers/iio/adc/meson_saradc.c index 66dc452d643a..e140db3e4016 100644 --- a/drivers/iio/adc/meson_saradc.c +++ b/drivers/iio/adc/meson_saradc.c @@ -1104,6 +1104,14 @@ static const struct meson_sar_adc_param meson_sar_adc_gxl_param = { .resolution = 12, }; +static const struct meson_sar_adc_param meson_sar_adc_g12a_param = { + .has_bl30_integration = false, + .clock_rate = 1200000, + .bandgap_reg = MESON_SAR_ADC_REG11, + .regmap_config = &meson_sar_adc_regmap_config_gxbb, + .resolution = 12, +}; + static const struct meson_sar_adc_data meson_sar_adc_meson8_data = { .param = &meson_sar_adc_meson8_param, .name = "meson-meson8-saradc", @@ -1140,7 +1148,7 @@ static const struct meson_sar_adc_data meson_sar_adc_axg_data = { }; static const struct meson_sar_adc_data meson_sar_adc_g12a_data = { - .param = &meson_sar_adc_gxl_param, + .param = &meson_sar_adc_g12a_param, .name = "meson-g12a-saradc", }; From patchwork Sat Jul 17 23:37:17 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Blumenstingl X-Patchwork-Id: 12384097 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=ham 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 EF7FDC636CE for ; Sat, 17 Jul 2021 23:37:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CED5F61153 for ; Sat, 17 Jul 2021 23:37:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231213AbhGQXkp (ORCPT ); Sat, 17 Jul 2021 19:40:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55886 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230461AbhGQXka (ORCPT ); Sat, 17 Jul 2021 19:40:30 -0400 Received: from mail-wm1-x329.google.com (mail-wm1-x329.google.com [IPv6:2a00:1450:4864:20::329]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 33B97C061762; Sat, 17 Jul 2021 16:37:33 -0700 (PDT) Received: by mail-wm1-x329.google.com with SMTP id u8-20020a7bcb080000b02901e44e9caa2aso8086151wmj.4; Sat, 17 Jul 2021 16:37:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=w4Deofgk9HydoSwsSwYhSOQ6AZsKWmThrjuDOLQIJSI=; b=tTHN8RTiCkN/u7Gbn97q4JpAMsasfakEr/B3J8YpXz9hfM9fty/H+aGOKk5jp2g0Tp 12Zb6Vx1XHpRvm1DTeRYTZfar4rF85rfb7Kzj3srhwVnfsfiG9df7rHWHtalo1bW57dv aCUOOWHPWC3rnfAFSp8aAuxn6UubejdrhndpyCBFspbQZLRM2ZKbGCvXruQcKYNt2Rkq v7oO5j0HGGMqDJr7dnRkVy5+rvc4l7GXpRmj4wAAVsY8g+SiTk/BoGoJ11ox7Rp4mmxn O4KQdExtxE2myqpI3hsOcocHYc7mUib7GFTZaFanybABokArmzPFMmxmkfhaiFvR1AoZ 0kgQ== 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=w4Deofgk9HydoSwsSwYhSOQ6AZsKWmThrjuDOLQIJSI=; b=mQfwTp4X9Ezusgu38hy8YtCy8HHrWzu6JjcnE3fL3vo6LjcPe8N9+Whgc+GlhPHPa6 W03C8xibia6yC+bmUZpJUDnXfIHUTVTMQWK0JGDWCH6h5n6325X8UN49OKYwPd4sGhqj 6oirSUAImhij/RtiYhB7tyWs6wo+74uUCNq8Y3CkJCkSnGQbzkIwrmR4+h5mos6IL7nE QWlPDo9lMfffahTPrIUizgXXDYALmII9MeqCjHZEauCfaV2FBVUZ7zPD1Ie6WfRU1b7h Nmax4sAGi7GxVD+10wovk+vLatWSvy4WJ8zIC6qLJXAijxAEV3YBAIbc3iGqL+mrX2tn yOyQ== X-Gm-Message-State: AOAM532NbCLPg36auGuuhRq/KB4tZPfvb0pRzDCwhx1NbJRWIkQqrdXA 2vmFzsjAy76BJVTJjUhsWPGLVeXj3/4= X-Google-Smtp-Source: ABdhPJwraMU1GDmwhidsRZxMlU3RDNSzTZ2alCY2KohjN9YprNOVczppy8RoAv0EuRw77Hg9HkzYMg== X-Received: by 2002:a7b:cd15:: with SMTP id f21mr18955629wmj.148.1626565051265; Sat, 17 Jul 2021 16:37:31 -0700 (PDT) Received: from localhost.localdomain (dynamic-2a01-0c22-7602-4e00-f22f-74ff-fe21-0725.c22.pool.telefonica.de. [2a01:c22:7602:4e00:f22f:74ff:fe21:725]) by smtp.googlemail.com with ESMTPSA id q7sm12347527wmq.33.2021.07.17.16.37.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 17 Jul 2021 16:37:31 -0700 (PDT) From: Martin Blumenstingl To: linux-iio@vger.kernel.org, linux-amlogic@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, lars@metafoo.de, jic23@kernel.org, Martin Blumenstingl Subject: [PATCH 2/3] iio: adc: meson-saradc: Add missing space between if and parenthesis Date: Sun, 18 Jul 2021 01:37:17 +0200 Message-Id: <20210717233718.332267-3-martin.blumenstingl@googlemail.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210717233718.332267-1-martin.blumenstingl@googlemail.com> References: <20210717233718.332267-1-martin.blumenstingl@googlemail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org Add a missing space between if and the opening parenthesis to make the coding style consistent across the whole driver. No functional changes intended. Signed-off-by: Martin Blumenstingl --- drivers/iio/adc/meson_saradc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/adc/meson_saradc.c b/drivers/iio/adc/meson_saradc.c index e140db3e4016..b4e16f2e957f 100644 --- a/drivers/iio/adc/meson_saradc.c +++ b/drivers/iio/adc/meson_saradc.c @@ -347,7 +347,7 @@ static int meson_sar_adc_read_raw_sample(struct iio_dev *indio_dev, struct meson_sar_adc_priv *priv = iio_priv(indio_dev); int regval, fifo_chan, fifo_val, count; - if(!wait_for_completion_timeout(&priv->done, + if (!wait_for_completion_timeout(&priv->done, msecs_to_jiffies(MESON_SAR_ADC_TIMEOUT))) return -ETIMEDOUT; From patchwork Sat Jul 17 23:37:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Blumenstingl X-Patchwork-Id: 12384095 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=ham 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 059CCC636CD for ; Sat, 17 Jul 2021 23:37:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DDFEA61106 for ; Sat, 17 Jul 2021 23:37:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231174AbhGQXkq (ORCPT ); Sat, 17 Jul 2021 19:40:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55892 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230502AbhGQXkc (ORCPT ); Sat, 17 Jul 2021 19:40:32 -0400 Received: from mail-wr1-x435.google.com (mail-wr1-x435.google.com [IPv6:2a00:1450:4864:20::435]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 991C0C061764; Sat, 17 Jul 2021 16:37:33 -0700 (PDT) Received: by mail-wr1-x435.google.com with SMTP id f9so16497264wrq.11; Sat, 17 Jul 2021 16:37:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=XT3dSBF1T+xb0vIDoCrx2w6ZTm5g1KZ+GveMuxTzekE=; b=CtXz2OYi/GCxjfmSsp1YKE9LnoDSnkeBX/+cM0CqBTWLFyQ6l+6dF7g0GALhl5vFip bB1RIaGem2FXKgNiq5DFd/DPWKamLAy953PR8qpNsuuHn+CCMqud62IDqI2tgLVcNVJL pqiUeR/+krg7X5p1lecyAvFwM5jkR75NGg6E5w+CQb1NJ9sbUYwh+ep4qbz61fVvxMJp TcSgS/GtSGwi5iDDi8i26O8rXG9dnoxKH7P/myimGPxHn9jsUFuERMigxDKxjx9wQWSW v8eZgG05pDqFZaqWIbBJC5A9z6GV2VeemXuFYPhFjx3Pr9A3KDKuqhML1I7a9D5eavp+ fGEA== 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=XT3dSBF1T+xb0vIDoCrx2w6ZTm5g1KZ+GveMuxTzekE=; b=hzbXrzU3BQhDC+1ScPbhWHiKhEG/YrZexMXJkxL7iQFEMX/WESQnpYKpVCk2dYyVwQ yYy1rSyz0J06A1cAeAJ0FNsfoBxNjkjiRZ3qOrd/L7vyRv2Uctdf68qm3KeXIpzkNr9A wzc6pp+av0JlVgXVlMlGsG+5BG0eEBPdc6VIgWhxbd9NriiCqFUoFKba2Fqh4rxUQPdn ngXfFr1gSB7dsXhXHxrJEtbYL/mGkFGdwm4nCF8hlHJtCzt6rKMhyv1CILA9upMaiLnb xS3NHMEf+aUDgkA+D2PsnKFeb387ZfNyKBb+6hbrnXp2w4jeigt21lKDzuv4pvvn2ujk QFuQ== X-Gm-Message-State: AOAM533P8fsNpJGCjpm4DODj3q8JJbJKwDiYv70owT1/CzAN0QNyEtcC ZMRxIuEt2JQRPVwNGGLyJzo65fqa/yY= X-Google-Smtp-Source: ABdhPJyMHQezFPPUSmeL1JZrcqZFIjqXhH77/GR5QaHIt7RRb8WSy+hK7rcUeEv/o/KOCoaagS0qRw== X-Received: by 2002:a5d:5141:: with SMTP id u1mr21346802wrt.193.1626565052070; Sat, 17 Jul 2021 16:37:32 -0700 (PDT) Received: from localhost.localdomain (dynamic-2a01-0c22-7602-4e00-f22f-74ff-fe21-0725.c22.pool.telefonica.de. [2a01:c22:7602:4e00:f22f:74ff:fe21:725]) by smtp.googlemail.com with ESMTPSA id q7sm12347527wmq.33.2021.07.17.16.37.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 17 Jul 2021 16:37:31 -0700 (PDT) From: Martin Blumenstingl To: linux-iio@vger.kernel.org, linux-amlogic@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, lars@metafoo.de, jic23@kernel.org, Martin Blumenstingl Subject: [PATCH 3/3] iio: adc: meson-saradc: Fix indentation of arguments after a line-break Date: Sun, 18 Jul 2021 01:37:18 +0200 Message-Id: <20210717233718.332267-4-martin.blumenstingl@googlemail.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210717233718.332267-1-martin.blumenstingl@googlemail.com> References: <20210717233718.332267-1-martin.blumenstingl@googlemail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org Align the function arguments after a line-break with the opening parenthesis on the previous line. No functional changes intended. Signed-off-by: Martin Blumenstingl --- drivers/iio/adc/meson_saradc.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/iio/adc/meson_saradc.c b/drivers/iio/adc/meson_saradc.c index b4e16f2e957f..705d5e11a54b 100644 --- a/drivers/iio/adc/meson_saradc.c +++ b/drivers/iio/adc/meson_saradc.c @@ -497,8 +497,8 @@ static int meson_sar_adc_lock(struct iio_dev *indio_dev) if (priv->param->has_bl30_integration) { /* prevent BL30 from using the SAR ADC while we are using it */ regmap_update_bits(priv->regmap, MESON_SAR_ADC_DELAY, - MESON_SAR_ADC_DELAY_KERNEL_BUSY, - MESON_SAR_ADC_DELAY_KERNEL_BUSY); + MESON_SAR_ADC_DELAY_KERNEL_BUSY, + MESON_SAR_ADC_DELAY_KERNEL_BUSY); /* * wait until BL30 releases it's lock (so we can use the SAR @@ -525,7 +525,7 @@ static void meson_sar_adc_unlock(struct iio_dev *indio_dev) if (priv->param->has_bl30_integration) /* allow BL30 to use the SAR ADC again */ regmap_update_bits(priv->regmap, MESON_SAR_ADC_DELAY, - MESON_SAR_ADC_DELAY_KERNEL_BUSY, 0); + MESON_SAR_ADC_DELAY_KERNEL_BUSY, 0); mutex_unlock(&indio_dev->mlock); } @@ -791,7 +791,7 @@ static int meson_sar_adc_init(struct iio_dev *indio_dev) * on the vendor driver), which we don't support at the moment. */ regmap_update_bits(priv->regmap, MESON_SAR_ADC_REG0, - MESON_SAR_ADC_REG0_ADC_TEMP_SEN_SEL, 0); + MESON_SAR_ADC_REG0_ADC_TEMP_SEN_SEL, 0); /* disable all channels by default */ regmap_write(priv->regmap, MESON_SAR_ADC_CHAN_LIST, 0x0);