From patchwork Tue Apr 27 05:36:12 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: 428747 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=-14.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, 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 0B481C433B4 for ; Tue, 27 Apr 2021 05:36:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C48BB613BF for ; Tue, 27 Apr 2021 05:36:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229872AbhD0FhK (ORCPT ); Tue, 27 Apr 2021 01:37:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49610 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229550AbhD0FhI (ORCPT ); Tue, 27 Apr 2021 01:37:08 -0400 Received: from mail-pj1-x1030.google.com (mail-pj1-x1030.google.com [IPv6:2607:f8b0:4864:20::1030]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 56E9BC061574 for ; Mon, 26 Apr 2021 22:36:23 -0700 (PDT) Received: by mail-pj1-x1030.google.com with SMTP id gq23-20020a17090b1057b0290151869af68bso6485944pjb.4 for ; Mon, 26 Apr 2021 22:36:23 -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:mime-version :content-transfer-encoding; bh=aTHnAMIQD5s8JadjAbGJIjLqhqT66XAtuscyCUM1Exg=; b=iDVXwOEZxmA8fOzgfknudnogPZoKYmxt3u8dTcHSHwypV0CykQKeRziphRLC3veOyJ AnOIFpfBBOdlNpdVwEX7841ZSHmTd/+D00vrCuLcizuefC4WPLuMgL6v9IyHllx2fhBm qc1fJPhDE1Z3eibkPtW/NYxlStO0vq/IeLVNc= 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=aTHnAMIQD5s8JadjAbGJIjLqhqT66XAtuscyCUM1Exg=; b=koSACYGkKOr6muWDUC9/Jgc7Jvc+y7ra9v2soP1/Z5fw5GKEDKFouHTHGPRMVzO3J2 M+tOx75Eyy0yr7JO66OweVdrQGgw02Jg5rMAJyxZ9v80EUFlTPHuzP0FLmRtjDSzojuK VD2WLMux6P/rDXJP8KyNBwuDq35JF1z4ZvcN5FFHagKXk0RZo+ZERKQHVAKMrfc2L5Hq cDvcRqc8TJm3nH2zqlknWks9yEuFtyXirjuaGD9d6BV3EIJ/qL8gCT3fLRDvS8x8p8cE leBZPxyJV+yNjWUkn26Dfj0HDJ9JQrrK6wdlh/lJEfWJzH0dxkOqyVuhyUKNCECaXhDu TuOg== X-Gm-Message-State: AOAM530oODWxf4pUj/bWxD6EqA1XXbGU/PYzhWZysd78rG021hFrdTa0 4s1ZSyE9uGVGxvOgxyqVxWPCig== X-Google-Smtp-Source: ABdhPJwhDlroLXq4uzG2AtyLbgaJBtpApsdyh91sUIMYLFNmkYl6oY9Myfj40DiDCM4x+JYA/8iPoA== X-Received: by 2002:a17:90a:5907:: with SMTP id k7mr3159032pji.197.1619501782729; Mon, 26 Apr 2021 22:36:22 -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.2.2021.04.26.22.36.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 26 Apr 2021 22:36:22 -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 0/5] add power control in i2c Date: Tue, 27 Apr 2021 13:36:12 +0800 Message-Id: <20210427053617.27972-1-hsinyi@chromium.org> X-Mailer: git-send-email 2.31.1.498.g6c1eba8ee3d-goog MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Although in the most platforms, the power of eeprom and i2c are alway on, some platforms disable the eeprom and i2c power in order to meet low power request. This patch add the pm_runtime ops to control power to support all platforms. Changes since v19: - resend v19 with fix tag added. Changes since v18: - Fix a function name conflict with drivers/gpu/drm/i915/selftests/i915_gem.c Changes since v17: - Add a patch to fix unbalanced regulator disabling. - Add dts patch. Changes since v16: - request regulator in device instead of in the core. - control regulator only if it's provided. Changes since v15: - Squash the fix[1] for v15. [1] https://patchwork.ozlabs.org/project/linux-i2c/patch/20200522101327.13456-1-m.szyprowski@samsung.com/ Changes since v14: - change the return value in normal condition - access the variable after NULL pointer checking - add ack tag Changes since v13: - fixup some logic error Changes since v12: - rebase onto v5.7-rc1 - change the property description in binding Changes since v11: - use suspend_late/resume_early instead of suspend/resume - rebase onto v5.6-rc1 Changes since v10: - fixup some worng codes Changes since v9: - fixup build error - remove redundant code Changes since v8: - fixup some wrong code - remove redundant message [... snip ...] Bibby Hsieh (1): i2c: core: support bus regulator controlling in adapter Hsin-Yi Wang (4): dt-binding: i2c: mt65xx: add vbus-supply property i2c: mediatek: mt65xx: add optional vbus-supply misc: eeprom: at24: check suspend status before disable regulator arm64: dts: mt8183: add supply name for eeprom .../devicetree/bindings/i2c/i2c-mt65xx.txt | 1 + .../dts/mediatek/mt8183-kukui-kakadu.dtsi | 4 + .../dts/mediatek/mt8183-kukui-kodama.dtsi | 4 + .../boot/dts/mediatek/mt8183-kukui-krane.dtsi | 4 + drivers/i2c/busses/i2c-mt65xx.c | 7 ++ drivers/i2c/i2c-core-base.c | 88 +++++++++++++++++++ drivers/misc/eeprom/at24.c | 6 +- include/linux/i2c.h | 2 + 8 files changed, 114 insertions(+), 2 deletions(-)