From patchwork Wed Sep 4 09:00:06 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: 13790239 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 17FD4CA0ED3 for ; Wed, 4 Sep 2024 09:37:32 +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=b0sbG/jw58dFVSs3/2Q1ZWzAnnopRuiveILCTgaftSY=; b=JuWiqBicPPrz/rfcoUxSW/KDPg R3y3uF0oYFaIO+noMddFH2F92ZJf21GndrRkqHA4WkcQi24uWz3ooV8y6AALEjO+yNQdIxMKpKr+g 7fAcfibZKjEGaXePa9+izpQ2yDkQVKkJdxj3LA95yKaPokD4vZF55crgFMpL06VXJiV1kHk8D+CZ4 ZHdd9J13oSYxxZQ62HwVFeWtkGERyFuHqkT1gZJHBaZOcFOyO8HH2tM39a3oU5MldAy1B8juUqXOZ yrXMhjulVtPgAEWweZqiReNKAXdfwMYmxKjK0jsi8gUFSDueRDSoM3aF+1mwtYY2bkzp7EDBnQ/d9 r/pCzHzQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1slmRz-00000003iM3-31Eh; Wed, 04 Sep 2024 09:37:19 +0000 Received: from mail-pf1-x430.google.com ([2607:f8b0:4864:20::430]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sllsU-00000003YqO-23qn for linux-arm-kernel@lists.infradead.org; Wed, 04 Sep 2024 09:00:39 +0000 Received: by mail-pf1-x430.google.com with SMTP id d2e1a72fcca58-71767ef16b3so1495747b3a.0 for ; Wed, 04 Sep 2024 02:00:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1725440438; x=1726045238; 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=b0sbG/jw58dFVSs3/2Q1ZWzAnnopRuiveILCTgaftSY=; b=Bgg7aklHzDmGJ78sORANIVyRKaR/AeodGek+Qbwway/IG32tVvbiH5LoJpFI66h/f0 KqH1R+BGshhDRolGI3fBPt5NyYBRGqjWTOAu3V0ipr+yZq6QVWk2vS6eYCqQWJPJ848m erbBPxRkRT0cxYafTfIUD7mliAmQAJV0ef3m4= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1725440438; x=1726045238; 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=b0sbG/jw58dFVSs3/2Q1ZWzAnnopRuiveILCTgaftSY=; b=QwJ6FNZBLxBZnV5QpDS99ICKaDFoUwq4wxZDuKG9hsNCxsP7/7DregVeWajVLyQhgp s8AiHau1y9TpTr4a+VYUMZHdkBwpKsXn9wIW1YOmhtHwuyIm0gQlOwpF0VaakhqOLawc 1V/XfsnwTKRhvF0Q69GA+n4l1+5Xe1vFuw/jac09IlipE9dqj/3sAJmYj6ImethlX9H6 DkI34bKLrvKVoBVPoo4Y9J6LrK0plSweD8AakrHBHGDnLBOSWs9rY0y+Y14w0fHqP0ru RiZJ4dM2cpgjWDlmrC1EWnYbDyJhUevZ9u1bgRdy08xii/Ws+H7jiUuhIz3HoRhJpzvH kgRQ== X-Forwarded-Encrypted: i=1; AJvYcCUZZyncaTpCWAgODtUj9MmLHzWuitvjWbkAIzKFshcvwUVdHa8bHnGSCrJZicgewWs1LQHl9M3Ms5D1pik9vdVE@lists.infradead.org X-Gm-Message-State: AOJu0YxGwLVrbkbAtOGrK5b4ASoPG/k5IZUgYF2MNU1asYi/sN8Jg/rj KI6s9nFPy2B7eiiH8MvI3AR5+hzbjrKFMM2TZlISBWyBANx2k7BC1XFkvu+99g== X-Google-Smtp-Source: AGHT+IFJnhX8EeVHE/Pb/2Pe1cdA+zN3kwfbn5THcKUWQl9Uebvww0bAh3IhVagxcNqMcqnK8VZyqg== X-Received: by 2002:a05:6a21:6e4b:b0:1c6:ac08:8dd2 with SMTP id adf61e73a8af0-1ced6087aaemr11569081637.15.1725440437588; Wed, 04 Sep 2024 02:00:37 -0700 (PDT) Received: from wenstp920.tpe.corp.google.com ([2401:fa00:1:10:83fc:5c8e:13bd:d165]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-717785b5183sm1153279b3a.197.2024.09.04.02.00.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Sep 2024 02:00:37 -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 v6 04/12] regulator: Split up _regulator_get() Date: Wed, 4 Sep 2024 17:00:06 +0800 Message-ID: <20240904090016.2841572-5-wenst@chromium.org> X-Mailer: git-send-email 2.46.0.469.g59c65b2a67-goog In-Reply-To: <20240904090016.2841572-1-wenst@chromium.org> References: <20240904090016.2841572-1-wenst@chromium.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240904_020038_539714_4BF4FCAC X-CRM114-Status: GOOD ( 20.15 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=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 v5: - Fixed kerneldoc "Return" section format for _regulator_get_common() - Slightly reworded return value description 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 835a5531d045..d60c86477ac2 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -2103,26 +2103,43 @@ 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: pointer to struct regulator corresponding to @rdev, or ERR_PTR() + * encoded error. + * + * 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); @@ -2238,6 +2255,21 @@ 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 8e5506c5ee94..5b43f802468d 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,