From patchwork Tue Apr 27 05:36:15 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hsin-Yi Wang X-Patchwork-Id: 428079 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=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, 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 0EE79C43460 for ; Tue, 27 Apr 2021 05:36:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CC72A613B4 for ; Tue, 27 Apr 2021 05:36:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231327AbhD0FhT (ORCPT ); Tue, 27 Apr 2021 01:37:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49624 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231643AbhD0FhQ (ORCPT ); Tue, 27 Apr 2021 01:37:16 -0400 Received: from mail-pf1-x430.google.com (mail-pf1-x430.google.com [IPv6:2607:f8b0:4864:20::430]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 61D3CC06138C for ; Mon, 26 Apr 2021 22:36:31 -0700 (PDT) Received: by mail-pf1-x430.google.com with SMTP id c3so21812509pfo.3 for ; Mon, 26 Apr 2021 22:36:31 -0700 (PDT) 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=oOSiNAIFbF5oM0OgD4JWcfn+rkikH5kg1ZaUYL3whtQ=; b=VOWdUtYAgwq1bQG3/NsqLEKs/W1eKLs6RW9BQiWCYyD/Rfqvg890AjJ+GEoGMq5OrA AJ5KHj4U1HvetQeuUVJVOIRQXy84KxIekLczgZ69sB4zUtPWSuutk3TpnMuHMTjWm4+8 h8G+8PZFnH5Rm1K+s/a+i9Kx1KocC5TA7BsS0= 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=oOSiNAIFbF5oM0OgD4JWcfn+rkikH5kg1ZaUYL3whtQ=; b=PTJzsODRkT4uIc+OR+EQhMnVcWiPjup75eIbGpZH05Z7F314pjyjyNivDLT9x3ey+D K3asnXtvlAC2I2pDhIwRy4L+3ZU/5LGgYeFuK3SnEUY1TQfF46Po8yxah1F9ZLIXj8uo qtTRetUtU18sLGnDOMb+5hkvGEqSa2zonCLQcTsIr7lM4pr1cc3twRjRVNeI3dItF4+/ oFJOiYpkJ8r28LXCz6xZSPF2IorGTcy/lsq/8uMjumUnW6ZKXBZGtvu5aaEnGHnJuHAg v+RsDL/guiBSvuvHnXa/deN7x74ywYvWO2Vl9QrwAK9eW/DCkbt58CO6R7HwN1rOW4sU 7jcw== X-Gm-Message-State: AOAM531+Ejs0N+6UU81qNIzqtPf2ID/dtm38pdgFm5s+cGKJCwxJLqO2 ZBtU9++mXOikMV2q74lRhNyhaA== X-Google-Smtp-Source: ABdhPJyrLflzW+OohhHuQBd5kScDJnTZGVrPGqJeEKaquqlC5N0ZXttwfYEPggjDOml6EKMuunb2XA== X-Received: by 2002:aa7:82ce:0:b029:242:deb4:9442 with SMTP id f14-20020aa782ce0000b0290242deb49442mr21579555pfn.73.1619501790821; Mon, 26 Apr 2021 22:36:30 -0700 (PDT) Received: from hsinyi-z840.tpe.corp.google.com ([2401:fa00:1:10:3984:c4f5:8612:6b3e]) by smtp.gmail.com with ESMTPSA id gc15sm993529pjb.2.2021.04.26.22.36.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 26 Apr 2021 22:36:30 -0700 (PDT) From: Hsin-Yi Wang To: Wolfram Sang , Matthias Brugger , Rob Herring , Bartosz Golaszewski Cc: linux-i2c@vger.kernel.org, Qii Wang , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Mark Brown , Marek Szyprowski , Bibby Hsieh , Arnd Bergmann Subject: [PATCH v20 3/5] i2c: mediatek: mt65xx: add optional vbus-supply Date: Tue, 27 Apr 2021 13:36:15 +0800 Message-Id: <20210427053617.27972-4-hsinyi@chromium.org> X-Mailer: git-send-email 2.31.1.498.g6c1eba8ee3d-goog In-Reply-To: <20210427053617.27972-1-hsinyi@chromium.org> References: <20210427053617.27972-1-hsinyi@chromium.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org Add vbus-supply which provides power to SCL/SDA. Pass this regulator into core so it can be turned on/off for low power mode support. Signed-off-by: Hsin-Yi Wang --- drivers/i2c/busses/i2c-mt65xx.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c index 2ffd2f354d0a..82f2b6716005 100644 --- a/drivers/i2c/busses/i2c-mt65xx.c +++ b/drivers/i2c/busses/i2c-mt65xx.c @@ -1215,6 +1215,13 @@ static int mtk_i2c_probe(struct platform_device *pdev) i2c->adap.quirks = i2c->dev_comp->quirks; i2c->adap.timeout = 2 * HZ; i2c->adap.retries = 1; + i2c->adap.bus_regulator = devm_regulator_get_optional(&pdev->dev, "vbus"); + if (IS_ERR(i2c->adap.bus_regulator)) { + if (PTR_ERR(i2c->adap.bus_regulator) == -ENODEV) + i2c->adap.bus_regulator = NULL; + else + return PTR_ERR(i2c->adap.bus_regulator); + } ret = mtk_i2c_parse_dt(pdev->dev.of_node, i2c); if (ret)