From patchwork Sat Feb 10 03:05:47 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Saravana Kannan X-Patchwork-Id: 13552108 Received: from mail-yw1-f202.google.com (mail-yw1-f202.google.com [209.85.128.202]) (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 815292B9C2 for ; Sat, 10 Feb 2024 03:06:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707534372; cv=none; b=kTBULyc8Apwt61clu1GPlaPOSirz57yjyFYOb7/OsT1W7y3+3jjywBe1ME2HDoQxyXIOcWBbRibrmrFuYJvdc59M21nGq5SYvb+xhu0i0gMf+l9rQK3K6yWmxilyZtV01PqrOGG+T0rvbagXUZIFckPia5gW315dM9nboLnI4FI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707534372; c=relaxed/simple; bh=09nOuvy1xCjK1iYqCopDQXrnPVKpNm2a5rJaJXsm9lU=; h=Date:In-Reply-To:Message-Id:Mime-Version:References:Subject:From: To:Cc:Content-Type; b=V62XNQCNaSyQs0APOrTIRyAdFp5qKgLp/ECrs9ap1hd4NgZqVylNQijGT+GHg8JlBCW1odd3sWPTAoim3bP35ifb5By7CAXRjhQIykicoKAyFXp5ibnzUt3UA3zdDlPNYtRi2V5fPugfkX41IccSzj/ziUYQbjQXnKLCSYTddmQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--saravanak.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=pvopdkzM; arc=none smtp.client-ip=209.85.128.202 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--saravanak.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="pvopdkzM" Received: by mail-yw1-f202.google.com with SMTP id 00721157ae682-604ac3c75ebso33303737b3.0 for ; Fri, 09 Feb 2024 19:06:10 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1707534370; x=1708139170; darn=vger.kernel.org; h=cc:to:from:subject:references:mime-version:message-id:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=F5s7UC2LI5606ztlkySRh4zEDw9ZNIX2+7Suzh+XsVU=; b=pvopdkzMyY7gcSDnmuhMe1Lrbk1BKJR51rbeNR4MJLexjtGVOpCgs29lJ/dds4s8ZQ ECWW/fQO6z9RAjRwBm4vQXP9XTyrPdmqm+UIvEAkCwh680T3W4TY9rOHlqDbQULHo7aK g7eAqBA1kpjkaqgGNM2mPe1eqhWyqI0bcmpk7BTziBBYJsFEzyqzit+Otvz/EhnFxzxq U9Dj4wP6V25ucXHOLUR4KAD0yvVCfiFo8CKXfTDB8zWUE/WicBMsrE/XfxJwTnUK54HR wr+m7byxq6mJw9Vsgvdq0s5oOMMrcpRmKd61MAX3ws+RdxKOpydJtWCE3ct4Jq3ELdbn nRmw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1707534370; x=1708139170; h=cc:to:from:subject:references:mime-version:message-id:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=F5s7UC2LI5606ztlkySRh4zEDw9ZNIX2+7Suzh+XsVU=; b=E9CNSBtL2WQldw2jvMzCcYoIEGPYMuLjejxX3N4IooGN4hSZV1X56V5GGHmpqh4WlQ WARQ3r8L1urx9O/+MB2lPMbUqWjNCx6M+BIqDz7YWF3N69B/9MpO4RokBopcFOBx0fRj qRqlh/AzAOhAIu1s607+Hu35UoaRyQBmFkto55+BC8ks4H3zvNBA5eJXVzqWe4qz/t5y jOQMZlTgtqiiAiYsz1vZ1ctdaWBiFZpkPp9OENaYGwAqqLfwf/GyNXZ6CJ7fZVLpY7Yr ZPq8YYiJ9hDbT69OF2t6MaLsLcPuKKvVKq8RF5XhvfU87Z3J5E+i0mO7UNKMAsTMDkTK gqmg== X-Gm-Message-State: AOJu0Yz2czNeBjWi17AWhVnfPNoixHxbC8g/2VZ4G0nlj5zi0Brhl8Aa u5FyZO7Vvaj7vynATIad721nI0BQ+uKj4+uvRxM0x4iIDFW0wHHt2+pK4+wDCEAlEc1qJNJybe2 5XsokQowAebRQ3w== X-Google-Smtp-Source: AGHT+IHoaOrZfU2X7gvo32Z9ygKKDDC9jkDgw9ONDzx/dRL4i+TQaBCi1II8RxJpDFCvyqRwNSZSkNWR2n60Ftk= X-Received: from saravanak.san.corp.google.com ([2620:15c:2d:3:6b44:91e7:13e1:5d92]) (user=saravanak job=sendgmr) by 2002:a05:6902:1006:b0:dc6:ee88:ced2 with SMTP id w6-20020a056902100600b00dc6ee88ced2mr254743ybt.12.1707534369357; Fri, 09 Feb 2024 19:06:09 -0800 (PST) Date: Fri, 9 Feb 2024 19:05:47 -0800 In-Reply-To: <20240210030549.4048795-1-saravanak@google.com> Message-Id: <20240210030549.4048795-5-saravanak@google.com> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240210030549.4048795-1-saravanak@google.com> X-Mailer: git-send-email 2.43.0.687.g38aa6559b0-goog Subject: [PATCH v1 4/4] of: property: fw_devlink: Add support for "post-init-supplier" property From: Saravana Kannan To: Saravana Kannan , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Greg Kroah-Hartman , "Rafael J. Wysocki" , Ard Biesheuvel , Frank Rowand , Andy Shevchenko , Daniel Scally , Heikki Krogerus , Sakari Ailus , Len Brown Cc: kernel-team@android.com, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-efi@vger.kernel.org, linux-acpi@vger.kernel.org Add support for this property so that dependency cycles can be broken and fw_devlink can do better probe/suspend/resume ordering between devices in a dependency cycle. Signed-off-by: Saravana Kannan --- drivers/of/property.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) diff --git a/drivers/of/property.c b/drivers/of/property.c index 751c11a28f33..dce451161c99 100644 --- a/drivers/of/property.c +++ b/drivers/of/property.c @@ -1066,7 +1066,8 @@ of_fwnode_device_get_match_data(const struct fwnode_handle *fwnode, } static void of_link_to_phandle(struct device_node *con_np, - struct device_node *sup_np) + struct device_node *sup_np, + u8 flags) { struct device_node *tmp_np = of_node_get(sup_np); @@ -1085,7 +1086,8 @@ static void of_link_to_phandle(struct device_node *con_np, tmp_np = of_get_next_parent(tmp_np); } - fwnode_link_add(of_fwnode_handle(con_np), of_fwnode_handle(sup_np), 0); + fwnode_link_add(of_fwnode_handle(con_np), of_fwnode_handle(sup_np), + flags); } /** @@ -1198,6 +1200,8 @@ static struct device_node *parse_##fname(struct device_node *np, \ * to a struct device, implement this ops so fw_devlink can use it * to find the true consumer. * @optional: Describes whether a supplier is mandatory or not + * @fwlink_flags: Optional fwnode link flags to use when creating a fwnode link + * for this property. * * Returns: * parse_prop() return values are @@ -1210,6 +1214,7 @@ struct supplier_bindings { const char *prop_name, int index); struct device_node *(*get_con_dev)(struct device_node *np); bool optional; + u8 fwlink_flags; }; DEFINE_SIMPLE_PROP(clocks, "clocks", "#clock-cells") @@ -1240,6 +1245,7 @@ DEFINE_SIMPLE_PROP(leds, "leds", NULL) DEFINE_SIMPLE_PROP(backlight, "backlight", NULL) DEFINE_SIMPLE_PROP(panel, "panel", NULL) DEFINE_SIMPLE_PROP(msi_parent, "msi-parent", "#msi-cells") +DEFINE_SIMPLE_PROP(post_init_supplier, "post-init-supplier", NULL) DEFINE_SUFFIX_PROP(regulators, "-supply", NULL) DEFINE_SUFFIX_PROP(gpio, "-gpio", "#gpio-cells") @@ -1349,6 +1355,10 @@ static const struct supplier_bindings of_supplier_bindings[] = { { .parse_prop = parse_regulators, }, { .parse_prop = parse_gpio, }, { .parse_prop = parse_gpios, }, + { + .parse_prop = parse_post_init_supplier, + .fwlink_flags = FWLINK_FLAG_IGNORE, + }, {} }; @@ -1393,7 +1403,8 @@ static int of_link_property(struct device_node *con_np, const char *prop_name) : of_node_get(con_np); matched = true; i++; - of_link_to_phandle(con_dev_np, phandle); + of_link_to_phandle(con_dev_np, phandle, + s->fwlink_flags); of_node_put(phandle); of_node_put(con_dev_np); }