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=-13.1 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,SIGNED_OFF_BY,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 71530C433E1 for ; Wed, 12 Aug 2020 13:31:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 48D69204FD for ; Wed, 12 Aug 2020 13:31:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="c2AHu8++" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728094AbgHLNb2 (ORCPT ); Wed, 12 Aug 2020 09:31:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37458 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728025AbgHLNbX (ORCPT ); Wed, 12 Aug 2020 09:31:23 -0400 Received: from mail-pf1-x443.google.com (mail-pf1-x443.google.com [IPv6:2607:f8b0:4864:20::443]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 184CEC06174A for ; Wed, 12 Aug 2020 06:31:21 -0700 (PDT) Received: by mail-pf1-x443.google.com with SMTP id d22so1035885pfn.5 for ; Wed, 12 Aug 2020 06:31:21 -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=vlf2gQ258Yo0xeKkYNMeBOCIHVe3hvJX2SMEJPRuUbY=; b=c2AHu8++qdSURlnEYQVRqISoN1mnzzPboyfje7CpVG4P/AdpneMgNGfx+vclZ3SmJZ mrOFXwgOO3vK6Am/uNIgDP/uUcboRU3d7JhhPETV+s21RG7g1SXIG4mFstfweGJ23OE4 T0M8LDUAq/EplxYiiQNFOrdpjZd8vxugMAX9g= 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=vlf2gQ258Yo0xeKkYNMeBOCIHVe3hvJX2SMEJPRuUbY=; b=sCRfqws5+lOehAifLEbYXZM3iXFNWGKng5axQmh5+pCVty9AotOFVSLuPpvqMcaEOg jfopMTTRu6LAVi4GxgpiG/Wh+5gIJFQq3+l7hUwcr3Z6OXM9FLu5RYCqUhFWjbjP5Gd5 pBZzIIqCJBSnl/U42pXpMQens/VbbEN2M6qnB6XN/GBqaSBWkSuZS+Hk/iHb2YcHczr/ EjNRLaE5NnohOIcTB6fVXZ7cRTLXi+JE7x3ABLLm0eDXRHvxuUX5kGQwD8febGCi6NJ5 huofaSbI0sxaFbxdzsqS4cPpAkbo5gV8ERYdZy+ePB9eL9oK6QoYNuvsl62fABzoC43Y fGXA== X-Gm-Message-State: AOAM530cKyqSII37ExcPN8Gl67C7BxgWKce/6vbdhxomCWja+4rpawCg GnyPhIZ3g8C9U4uuftJsHsRCxA== X-Google-Smtp-Source: ABdhPJzpMXs76cDKrcxnEiUeiPgvpYo8pxBDIU68bf9PUiSC35Y94TDM35dGj/w0hCqzbdmyYT2Acw== X-Received: by 2002:aa7:9703:: with SMTP id a3mr11043496pfg.268.1597239079820; Wed, 12 Aug 2020 06:31:19 -0700 (PDT) Received: from hsinyi-z840.tpe.corp.google.com ([2401:fa00:1:10:1a60:24ff:fe89:3e93]) by smtp.gmail.com with ESMTPSA id b63sm2488143pfg.43.2020.08.12.06.31.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 Aug 2020 06:31:19 -0700 (PDT) From: Hsin-Yi Wang To: linux-arm-kernel@lists.infradead.org Cc: Support Opensource , Liam Girdwood , Mark Brown , linux-kernel@vger.kernel.org, Tomasz Figa , Nicolas Boichat , Daniel Kurtz Subject: [PATCH] regulator: da9211: add cache_type Date: Wed, 12 Aug 2020 21:31:02 +0800 Message-Id: <20200812133101.2513317-1-hsinyi@chromium.org> X-Mailer: git-send-email 2.28.0.236.gb10cc79966-goog MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add regmap_cache to reduce wakeups events of interrupt if regulator is accessed frequently. This results in saving more power. Suggested-by: Daniel Kurtz Signed-off-by: Hsin-Yi Wang --- drivers/regulator/da9211-regulator.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/regulator/da9211-regulator.c b/drivers/regulator/da9211-regulator.c index 297b3aa7c753..cffcefd0538d 100644 --- a/drivers/regulator/da9211-regulator.c +++ b/drivers/regulator/da9211-regulator.c @@ -51,10 +51,24 @@ static const struct regmap_range_cfg da9211_regmap_range[] = { }, }; +static bool da9211_volatile_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case DA9211_REG_STATUS_A: + case DA9211_REG_STATUS_B: + case DA9211_REG_EVENT_A: + case DA9211_REG_EVENT_B: + return true; + } + return false; +} + static const struct regmap_config da9211_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = 5 * 128, + .volatile_reg = da9211_volatile_reg, + .cache_type = REGCACHE_RBTREE, .ranges = da9211_regmap_range, .num_ranges = ARRAY_SIZE(da9211_regmap_range), }; -- 2.28.0.236.gb10cc79966-goog