From nobody Thu Sep 19 23:20:21 2024 Received: from mail-pf1-f175.google.com (mail-pf1-f175.google.com [209.85.210.175]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E87421CCED1 for ; Wed, 4 Sep 2024 09:00:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.175 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725440429; cv=none; b=cJAIwbvP59AcZRcBYrYx6gMGn8l3vXBDWWVR5fQlFvSQGgNH2HoRmmEfIF45VFhYzylix3La2N6Db0V+Utxi18nsYcJthQucZWfWq7BHFnluwNleJ2dSP5NtzBFwXjVpTIl4Iqi51Wrl79uSxvuarRroEb/jFFwjdEKDfREbsmQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725440429; c=relaxed/simple; bh=Aeu7pCFnO2BARKJiVMSEYiClHg8V79pM2noeL3Ikwhg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=JIuorbb63fH1JM6MFqi+Ugy58XtgzNpAph/y4PHWcK2RPN9dIE4NkR25Hny7LJ3riQpFcgbEB0GPfRfCfufkYjBgWSiYU11XlqjERcvN2w+FDpiOivagRoHFKOkHQWaQZeOtw3QpeC0vbrRNSPcF1l+bWnFtLrbtmyZ/2W9jVRA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org; spf=pass smtp.mailfrom=chromium.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b=HEJoQ/3S; arc=none smtp.client-ip=209.85.210.175 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=chromium.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="HEJoQ/3S" Received: by mail-pf1-f175.google.com with SMTP id d2e1a72fcca58-715abede256so4818727b3a.3 for ; Wed, 04 Sep 2024 02:00:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1725440427; x=1726045227; darn=vger.kernel.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=URewZP1CjuEapcOrKzsC3z8bnfBtBnJFc+7fenwYvsw=; b=HEJoQ/3St4tqzpLFHA7pmkThP05Xv+ePlQ17QePbLQk6QUcQGjm6KFqz7pwMe5uf83 8yBnQcSVg41qkLCagWsKtTWan1ea5LKaxpi4ur3KCF0YpOStyx4LgYpLJZQnMX5NGCZA TkIN85ihaMnN1UPWJgxInVP6IwXbVhUjjG6hw= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1725440427; x=1726045227; 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=URewZP1CjuEapcOrKzsC3z8bnfBtBnJFc+7fenwYvsw=; b=iFMpAdrFdBvK0t5kMn8wHeg5ygKFQC0WU3qZ8aoe5DqjKwGpzZpuk2Ns3/ZtrcDHiQ LVofaEbHSTTi7jlTR5SEmGHVO3vdaniG+VTRK+G7I2fna+6BvxI7kh3ejtL3a0zd2OQE qQHeXIKRCJGkY9MKs9T34YdzE0UBXUC8JC8ovjJ8yK0d9RBgbcB5pllCCbRRF+jpXSGz oc5R8rPVTcslIzZ3kbQDWns5r8fb7Ii1mEB+gmhYq5SVGQy8rdVqHPkQfGR5qzq13NI/ uQAyyrNo2Xxiy3EDUQ1HgZnQbMdLowimcqE80QWrMkHAa1vAs/gEoQF50NqXyJgw1ppp ZbEA== X-Forwarded-Encrypted: i=1; AJvYcCWqRYFy2RLnoI3igDZ6daL6DhVKv4BZAijIIF9SuyBXN5xu699Y4h40tBdLRfi/wbtN7tG9rS2UnpsYnIQ=@vger.kernel.org X-Gm-Message-State: AOJu0Yw7VsotY4N5uOqhTx5gS2G4z9pQ7LeJmMDh/IQ7jTv4dgNSsGvl sTRnWIXm5QU/I7pO37LiD7eBBS6wkkhEoqBmwxnDL8y948YiYHTCxgP76pBsfw== X-Google-Smtp-Source: AGHT+IHf+4oWltICBIad0flKpZyWzPtxz5hqcWd60IFNv00gyZa3rQlflgcNL2YbqnsGxF7j26kYgg== X-Received: by 2002:a05:6a00:2d05:b0:70a:f65e:b13d with SMTP id d2e1a72fcca58-717449c6427mr11999072b3a.27.1725440426991; Wed, 04 Sep 2024 02:00:26 -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.197.2024.09.04.02.00.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Sep 2024 02:00:26 -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 01/12] of: dynamic: Add of_changeset_update_prop_string Date: Wed, 4 Sep 2024 17:00:03 +0800 Message-ID: <20240904090016.2841572-2-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> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add a helper function to add string property updates to an OF changeset. This is similar to of_changeset_add_prop_string(), but instead of adding the property (and failing if it exists), it will update the property. This shall be used later in the DT hardware prober. Signed-off-by: Chen-Yu Tsai Reviewed-by: Rob Herring (Arm) --- Changes since v5: - Collected Rob's tag Changes since v4: - Use modern designated initializer for |prop| Changes since v3: - Use new __of_prop_free() helper - Add new line before header declaration Changes since v2: - New patch added in v3 --- drivers/of/dynamic.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ include/linux/of.h | 4 ++++ 2 files changed, 48 insertions(+) diff --git a/drivers/of/dynamic.c b/drivers/of/dynamic.c index 110104a936d9..daa69d160a78 100644 --- a/drivers/of/dynamic.c +++ b/drivers/of/dynamic.c @@ -1072,3 +1072,47 @@ int of_changeset_add_prop_bool(struct of_changeset *= ocs, struct device_node *np, return of_changeset_add_prop_helper(ocs, np, &prop); } EXPORT_SYMBOL_GPL(of_changeset_add_prop_bool); + +static int of_changeset_update_prop_helper(struct of_changeset *ocs, + struct device_node *np, + const struct property *pp) +{ + struct property *new_pp; + int ret; + + new_pp =3D __of_prop_dup(pp, GFP_KERNEL); + if (!new_pp) + return -ENOMEM; + + ret =3D of_changeset_update_property(ocs, np, new_pp); + if (ret) + __of_prop_free(new_pp); + + return ret; +} + +/** + * of_changeset_update_prop_string - Add a string property update to a cha= ngeset + * + * @ocs: changeset pointer + * @np: device node pointer + * @prop_name: name of the property to be updated + * @str: pointer to null terminated string + * + * Create a string property to be updated and add it to a changeset. + * + * Return: 0 on success, a negative error value in case of an error. + */ +int of_changeset_update_prop_string(struct of_changeset *ocs, + struct device_node *np, + const char *prop_name, const char *str) +{ + struct property prop =3D { + .name =3D (char *)prop_name, + .length =3D strlen(str) + 1, + .value =3D (void *)str, + }; + + return of_changeset_update_prop_helper(ocs, np, &prop); +} +EXPORT_SYMBOL_GPL(of_changeset_update_prop_string); diff --git a/include/linux/of.h b/include/linux/of.h index 85b60ac9eec5..046283be1cd3 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -1651,6 +1651,10 @@ static inline int of_changeset_add_prop_u32(struct o= f_changeset *ocs, return of_changeset_add_prop_u32_array(ocs, np, prop_name, &val, 1); } =20 +int of_changeset_update_prop_string(struct of_changeset *ocs, + struct device_node *np, + const char *prop_name, const char *str); + int of_changeset_add_prop_bool(struct of_changeset *ocs, struct device_nod= e *np, const char *prop_name); =20 --=20 2.46.0.469.g59c65b2a67-goog