From patchwork Thu Aug 22 09:19:56 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen-Yu Tsai X-Patchwork-Id: 13773072 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5680AC3DA4A for ; Thu, 22 Aug 2024 09:23:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=dQ/ais/DnW2DhkO42fRSNxxKCNt0O583PTfpQXJv2Js=; b=hETuSNEqMuagZ36Ny2qR+9Vyva Qvi7KzobAN73mP+FsIwBg7wmKMK/fd2jfgXjqhSc2+x+g9K9Nyw2ohlx9qooGt8DXxxyhNuTHwGES x35DUIruEKjYdgsCI0kqTuOtDJl4n1MqQPHHuhtgtyJ1eooncHoBY8/dGpAdsJMZBTW/dZvdZkO8I mMbfW/TtF+WmrIA0JZhFbr8d5OK/38OjUhOvNFNfvHUqiLvSGxIyeggVb69kEcbom8mjl0d2ngTZv SXAdpKUDP9ShIBvMcUYv3xIOhIiNMNTHpvZD61xMp8ZpPwr1Ndyzer1gs7cKFygurdBsONYTiudgI LkxW8d6w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sh42S-0000000CD3P-09cH; Thu, 22 Aug 2024 09:23:28 +0000 Received: from mail-pf1-x42d.google.com ([2607:f8b0:4864:20::42d]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sh3zc-0000000CCAu-3AVz for linux-mediatek@lists.infradead.org; Thu, 22 Aug 2024 09:20:34 +0000 Received: by mail-pf1-x42d.google.com with SMTP id d2e1a72fcca58-713eeb4e4a9so482008b3a.0 for ; Thu, 22 Aug 2024 02:20:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1724318432; x=1724923232; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=dQ/ais/DnW2DhkO42fRSNxxKCNt0O583PTfpQXJv2Js=; b=gr+KiuNYnEI60KfZqAS8J2I6viN5WnCjnZ/B/R/gkYiSeiXWCfCJjZog8SQAdsaE2l QRoQg4eYwevhhZD5yK8hhJojP4jKw9Z/TAa1t0Csv0JFuZyCmxCt3mlTKxhnITACs/pe luQs690HG6VHS/iG/HUGZznK4SxVQmWuF5cLQ= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1724318432; x=1724923232; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=dQ/ais/DnW2DhkO42fRSNxxKCNt0O583PTfpQXJv2Js=; b=eADRWnDg/N0vlKI9+PU64jUl/hN+WjqqLnVFtHUwDt0gQG3n9NmYsHA4fBXAmrGnFC e/LdaCNd72zbMHoSefQu5eQapszEw6OhkLDvfnPNPbK5NV07EnUmGZmRgZCdpI/rDfOf yV+gUmNIs6CztoMtpC2wuKt6M3T1ykCFeu6TD5Jd4KzOYHV0ooYMmswsvH4OBfp7lxFv 19F/dZsWkrKoB7lOk2cltSaF1AE1M1TNhHmoBnJvf02NiMBU68RJg1Cev0hWjS4/KpLL cuZVuZN0bSQ+tZ5NA5OIeD0BHePHMoj4w4Sxk5q75iJJ+DLiPHWM/eFvZrWuWmMPkiXZ L5IA== X-Forwarded-Encrypted: i=1; AJvYcCW/jEfN/CAxyGEz05zTltns5ImXDKwIgp/1/VzW+vt1sUUKdUvCbJGPaGN+kQBEaLXCPsvZJVpYx06Wk8GvCA==@lists.infradead.org X-Gm-Message-State: AOJu0YwScQF3VUDU2/CznYAp73Ertg8LyoJ4kOMErH5u/jB/Sb6+Q18C p/MmWi911/PJM/3gvkWdI0PgFdxUrp/rnH3XTxQh4+I9tV9ARqzHeqPrqvRlFuIzzwwqqOzdDV4 = X-Google-Smtp-Source: AGHT+IHNX1mTbdGkDuNm269HAAWFLZMuunhBrLdO555YXJUIWEo+jUShOHk7j43VZg4OPf7/Roe+/g== X-Received: by 2002:a05:6a21:398c:b0:1c6:f9ea:f2df with SMTP id adf61e73a8af0-1cad7f89598mr5999512637.12.1724318431795; Thu, 22 Aug 2024 02:20:31 -0700 (PDT) Received: from wenstp920.tpe.corp.google.com ([2401:fa00:1:10:8470:6a67:8877:ce2c]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-71434335e69sm951398b3a.194.2024.08.22.02.20.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 22 Aug 2024 02:20:31 -0700 (PDT) From: Chen-Yu Tsai To: Rob Herring , Saravana Kannan , Matthias Brugger , AngeloGioacchino Del Regno , Wolfram Sang , Benson Leung , Tzung-Bi Shih , Mark Brown , Liam Girdwood Cc: Chen-Yu Tsai , chrome-platform@lists.linux.dev, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, Douglas Anderson , Johan Hovold , Jiri Kosina , Andy Shevchenko , linux-i2c@vger.kernel.org Subject: [PATCH v5 03/10] regulator: Split up _regulator_get() Date: Thu, 22 Aug 2024 17:19:56 +0800 Message-ID: <20240822092006.3134096-4-wenst@chromium.org> X-Mailer: git-send-email 2.46.0.184.g6999bdac58-goog In-Reply-To: <20240822092006.3134096-1-wenst@chromium.org> References: <20240822092006.3134096-1-wenst@chromium.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240822_022032_821943_D609B63F X-CRM114-Status: GOOD ( 18.20 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org _regulator_get() contains a lot of common code doing checks prior to the regulator lookup and housekeeping work after the lookup. Almost all the code could be shared with a OF-specific variant of _regulator_get(). Split out the common parts so that they can be reused. The OF-specific version of _regulator_get() will be added in a subsequent patch. No functional changes were made. Signed-off-by: Chen-Yu Tsai --- Changes since v4: - New patch --- drivers/regulator/core.c | 54 ++++++++++++++++++++++++++++-------- drivers/regulator/internal.h | 4 +++ 2 files changed, 47 insertions(+), 11 deletions(-) diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 361309fcae57..4d1c640cc030 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -2093,26 +2093,43 @@ static int regulator_resolve_supply(struct regulator_dev *rdev) return ret; } -/* Internal regulator request function */ -struct regulator *_regulator_get(struct device *dev, const char *id, - enum regulator_get_type get_type) +/* common pre-checks for regulator requests */ +int _regulator_get_common_check(struct device *dev, const char *id, + enum regulator_get_type get_type) { - struct regulator_dev *rdev; - struct regulator *regulator; - struct device_link *link; - int ret; - if (get_type >= MAX_GET_TYPE) { dev_err(dev, "invalid type %d in %s\n", get_type, __func__); - return ERR_PTR(-EINVAL); + return -EINVAL; } if (id == NULL) { dev_err(dev, "regulator request with no identifier\n"); - return ERR_PTR(-EINVAL); + return -EINVAL; } - rdev = regulator_dev_lookup(dev, id); + return 0; +} + +/** + * _regulator_get_common - Common code for regulator requests + * @rdev: regulator device pointer as returned by *regulator_dev_lookup() + * Its reference count is expected to have been incremented. + * @dev: device used for dev_printk messages + * @id: Supply name or regulator ID + * @get_type: enum regulator_get_type value corresponding to type of request + * + * Returns a struct regulator corresponding to @rdev, + * or IS_ERR() condition containing errno. + * + * This function should be chained with *regulator_dev_lookup() functions. + */ +struct regulator *_regulator_get_common(struct regulator_dev *rdev, struct device *dev, + const char *id, enum regulator_get_type get_type) +{ + struct regulator *regulator; + struct device_link *link; + int ret; + if (IS_ERR(rdev)) { ret = PTR_ERR(rdev); @@ -2228,6 +2245,21 @@ struct regulator *_regulator_get(struct device *dev, const char *id, return regulator; } +/* Internal regulator request function */ +struct regulator *_regulator_get(struct device *dev, const char *id, + enum regulator_get_type get_type) +{ + struct regulator_dev *rdev; + int ret; + + ret = _regulator_get_common_check(dev, id, get_type); + if (ret) + return ERR_PTR(ret); + + rdev = regulator_dev_lookup(dev, id); + return _regulator_get_common(rdev, dev, id, get_type); +} + /** * regulator_get - lookup and obtain a reference to a regulator. * @dev: device for regulator "consumer" diff --git a/drivers/regulator/internal.h b/drivers/regulator/internal.h index ffeaef22169e..3718459fb0c5 100644 --- a/drivers/regulator/internal.h +++ b/drivers/regulator/internal.h @@ -121,6 +121,10 @@ enum regulator_get_type { MAX_GET_TYPE }; +int _regulator_get_common_check(struct device *dev, const char *id, + enum regulator_get_type get_type); +struct regulator *_regulator_get_common(struct regulator_dev *rdev, struct device *dev, + const char *id, enum regulator_get_type get_type); struct regulator *_regulator_get(struct device *dev, const char *id, enum regulator_get_type get_type); int _regulator_bulk_get(struct device *dev, int num_consumers,