From nobody Tue Nov 26 17:37:13 2024 Received: from mail-pl1-f172.google.com (mail-pl1-f172.google.com [209.85.214.172]) (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 931A6762E0 for ; Thu, 17 Oct 2024 09:42:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729158159; cv=none; b=OKszAyKLJ7Puk531O8pMVRKXdr+MT7n9ymTYFOS7Cvru0yHjLm1Z2epym50QKunXa3qct5d9uYYLrjzbYH2J0PV2M4UyJlJ5ehAWk5LRtaBT7gNIpntYOO28eDLwl3O3+hFhAnPfWB2paD753DEYYtVdwqOsZ44PNeOAszH9cTc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729158159; c=relaxed/simple; bh=V/n7WzzFgqcIbOXGpqToEE3eBDOc2ugJNgUyK4Dqt3g=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=N4ahV4NNZRkaPku6r2JFSR9CC51EHo+Gct6Cug4KIV/RsVYfTTW+SYbICxKxJmUHAykFD82rExAxv6pAEpTvCIG+lkfP95LoQ16woCe4tn8jMoDyWK6LL1xhTMFhm6UkW6WE4KA+pzPmfhQ0En1dQfgrmYr9xMZP+yRwu9m/Hbs= 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=POZKVmSS; arc=none smtp.client-ip=209.85.214.172 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="POZKVmSS" Received: by mail-pl1-f172.google.com with SMTP id d9443c01a7336-20cf6eea3c0so6182625ad.0 for ; Thu, 17 Oct 2024 02:42:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1729158155; x=1729762955; 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=B6FZbts9QCxoLKhhcQZxuM7DUHh34aD5doQpW7slZ5I=; b=POZKVmSSWwZf1er0s0t249d3bX/uZC249yMpWlmzwPrrbjMpV+d9vNuVjraCbhsvJI 26jxQHUsx/QkV4zTrVHeGbYFbbm/meHwCJVgOtlTKaV76Ae/zPtRO20iBxhkWIyZ3b0V sq42Ch/gfoVkcI0j1E0N3Yk/iJXcwGJ2HRKno= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1729158155; x=1729762955; 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=B6FZbts9QCxoLKhhcQZxuM7DUHh34aD5doQpW7slZ5I=; b=O3SvVpQf4c7B5rZzyfN9u8aDYPz9Dyxkwt+Oq2qMjkOdfZAUht3C6HxJ7OcYSu1WNf 7AyluViukn/3x5u10K5YpGT7MNVI3zRxNJTjncU1zLpmjyCRy1BEE/YUu4ZV3t+rFAN6 nPQeHBy9NZSLC9kPaAmh613AEn+mIMAZwJdxZFVliMn7fdFFgpj6ZjFWWrAvfb3CzGLU I7mQSmEzHkL43s+VoMMJTZlcroad+SDi5Ni2/nhNKnqhNh+npt2da21JueclZvktg0J/ bmR5crNeyFx4t+b0yt2XEVyFX4i294rsS0SbV5F1zWkVv7unDr1s2k9faeGicaZUbWKQ cPJg== X-Forwarded-Encrypted: i=1; AJvYcCVRQ/Ot3m3R8Cu+ZsH4ir8FIfmIZO1W1TM79C0KvtpYD/LAxzSViVxv6z8mZ6c1fFs/DqYD936E4t6RA3s=@vger.kernel.org X-Gm-Message-State: AOJu0Yzgpi46BtN54uuevP/j008853kSs+BCfbez8ZT3ybpZ+c06sT43 VNt+9g2wd8sqamkOja6KkPEDPRwMpkoAX9XMVONQvElnZ2ZYyT6GldPOcEBe7g== X-Google-Smtp-Source: AGHT+IG0EPLVHHmR9wrOAnasXV/P1d6JWPLrEg/AThFAO/2GTIkhM3VA+1j1tPEZBxObpDzVuNjxrg== X-Received: by 2002:a17:902:d4c6:b0:20c:bb35:dae2 with SMTP id d9443c01a7336-20d27ed00e8mr83383385ad.28.1729158154872; Thu, 17 Oct 2024 02:42:34 -0700 (PDT) Received: from wenstp920.tpe.corp.google.com ([2401:fa00:1:10:fabb:a7ab:3d7:9aaa]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-20d17f87ccasm40638655ad.62.2024.10.17.02.42.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 17 Oct 2024 02:42:34 -0700 (PDT) From: Chen-Yu Tsai To: Rob Herring , Saravana Kannan , Matthias Brugger , AngeloGioacchino Del Regno , Wolfram Sang , Benson Leung , Tzung-Bi Shih 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 v9 1/7] of: dynamic: Add of_changeset_update_prop_string Date: Thu, 17 Oct 2024 17:34:36 +0800 Message-ID: <20241017094222.1014936-2-wenst@chromium.org> X-Mailer: git-send-email 2.47.0.rc1.288.g06298d1525-goog In-Reply-To: <20241017094222.1014936-1-wenst@chromium.org> References: <20241017094222.1014936-1-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 v7: none Changes since v6: none 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 d45a8df61380..0aba760f7577 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 086a60f3b8a6..d0307e3b093d 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 2.47.0.rc1.288.g06298d1525-goog