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=-15.7 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,URIBL_BLOCKED,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 1C87EC433E6 for ; Thu, 21 Jan 2021 22:18:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DAFEF23A56 for ; Thu, 21 Jan 2021 22:18:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726919AbhAUWR4 (ORCPT ); Thu, 21 Jan 2021 17:17:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40538 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726575AbhAUWRw (ORCPT ); Thu, 21 Jan 2021 17:17:52 -0500 Received: from mail-lf1-x131.google.com (mail-lf1-x131.google.com [IPv6:2a00:1450:4864:20::131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9F185C06174A; Thu, 21 Jan 2021 14:17:11 -0800 (PST) Received: by mail-lf1-x131.google.com with SMTP id h7so4801756lfc.6; Thu, 21 Jan 2021 14:17:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=bTdcptpSm2/2kQ4ITDCD3u4iHif9C6Z32QhGryRFTNo=; b=X9nK5kWVUwdXGhRk1zgAC+0+3tmUxrMvkZHONXZR0R2Hv8rJpKyBuYQjkwDlxSbg4U sd8JLvpa8eDZifyYrKAUPdeSX7AUAbUzpzETzPENNY6cDGQZTb4T+flyKx0A0SU62p09 WNaEH1W+DUGD9vjpuXl1vq5vdZPqW7vwC+EVuRz0rQoXjBtUj49AhwSFh8n6TcYCRVvQ flrgH5mzMBhPG21qeopZGBrcSgCAB9NjzJuBcGjs8kuQGM4zhgyHiyt2lroyqCiXmmfG WnO2y7aVvYxCHwzqS2T2vy4UZFZlG9ldIYtlwvvVWoIRXfs91aL9zLmpRfpr7u5gm3Dy 1BhQ== 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:mime-version :content-transfer-encoding; bh=bTdcptpSm2/2kQ4ITDCD3u4iHif9C6Z32QhGryRFTNo=; b=NIKNkh7YdJIhxREvNym/0l+jzT2SgRHVh7h0DCvnB1QOJxktfBX7hzvqd99o+4Qvbs XR38xU7ZeTGSktjFm9xjiYV0eCptShZD2Js67dVqppR9ahwuwQUs+uH+wSkKkTQBTRpm SBREH+2ZgGyy2i/sJc+3uhnSNzqaWHVttaYedz5OMIQIB7ss+REQlMU5RiLbwTe0t0oA Qs2d1rDksFOJp97dTpH9vLhqujtf4FIN/N2OsVUZMvgFvs5FCHpc0QxoRWY1Q+wcVoY1 tDCjd3WmgXB0yDPfWM1uzOEZlkLShpaJvkV/muVbQ/sHY9+GWthsOvQrvzmj8txF3i4L IIEQ== X-Gm-Message-State: AOAM530MFvYfF05jOaLE0a8Vz2KIma3Ly/qpnexbKp2DgvbGirAwPFj2 bK/+Ia1fPx5P2hE5y/iofc4= X-Google-Smtp-Source: ABdhPJzw15v1ElGgpB6rx9040A2JaIEsnt0eyNRuGP9WeK4eNRxdxbDYCUnLCkCLuXpaek++4hsyYQ== X-Received: by 2002:a19:c20a:: with SMTP id l10mr690111lfc.155.1611267430097; Thu, 21 Jan 2021 14:17:10 -0800 (PST) Received: from localhost.localdomain (109-252-192-57.dynamic.spd-mgts.ru. [109.252.192.57]) by smtp.gmail.com with ESMTPSA id f3sm717600ljn.129.2021.01.21.14.17.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 21 Jan 2021 14:17:09 -0800 (PST) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , Mark Brown , Liam Girdwood , Peter Geis , Nicolas Chauvet , Matt Merhar Cc: linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org Subject: [PATCH v3] regulator: Make regulator_sync_voltage() usable by coupled regulators Date: Fri, 22 Jan 2021 01:16:49 +0300 Message-Id: <20210121221649.23155-1-digetx@gmail.com> X-Mailer: git-send-email 2.29.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org Make regulator_sync_voltage() to re-balance voltage state of a coupled regulators instead of changing the voltage directly. Tested-by: Peter Geis # Ouya T30 Tested-by: Dmitry Osipenko # A500 T20 and Nexus7 T30 Tested-by: Nicolas Chauvet # PAZ00 T20 Tested-by: Matt Merhar # Ouya T30 Signed-off-by: Dmitry Osipenko --- Changelog: v3: - This patch is factored out from [1] to ease merging of the patches that will use the regulator_sync_voltage(). The goal is to get this change merged into 5.12, it will remove dependency for the Tegra Core power domain driver which will target 5.13. [1] https://patchwork.ozlabs.org/project/linux-tegra/list/?series=221130 drivers/regulator/core.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 3ae5ccd9277d..032d4e7df682 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -4148,6 +4148,12 @@ int regulator_sync_voltage(struct regulator *regulator) if (ret < 0) goto out; + /* balance only if there are regulators coupled */ + if (rdev->coupling_desc.n_coupled > 1) { + ret = regulator_balance_voltage(rdev, PM_SUSPEND_ON); + goto out; + } + ret = _regulator_do_set_voltage(rdev, min_uV, max_uV); out: -- 2.29.2