From patchwork Thu Feb 22 03:46:22 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Saravana Kannan X-Patchwork-Id: 774943 Received: from mail-yb1-f202.google.com (mail-yb1-f202.google.com [209.85.219.202]) (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 3DA231B808 for ; Thu, 22 Feb 2024 03:46:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708573604; cv=none; b=paTmwKP943OiOw9U3CmQzO1khaGUndx97mCw+wTNgGtPPXX1cgEkM48RXVgoVJh1T4arG1XKgXnJtkbTvcY7+ljQ+kmS+OOoRzftXOiWfXAwxySUZ/IAQTSfxrq1VNLuEG5/smBKASv+wjSiQ5R+QgkcDE3jRY24H6Hsvutvraw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708573604; c=relaxed/simple; bh=BYJ0NZJqbtsDWKL5M2UsBKoeU9XD22jULrfryxgvv50=; h=Date:In-Reply-To:Message-Id:Mime-Version:References:Subject:From: To:Cc:Content-Type; b=OU+vJ1WJ/izi0NJqQLYLAUOoUptWeekz+XjcKiWqvcKqD3zR/3HfYPE6RqQfMtpO2caaZN0pY/Ytrlb2cANRRTGRwyZhGvmr+ezFbeVx5sY9sg6UB162tag9IqHUgmEkKnZFVgBlaWqL+stqknwgs5KNgqa3cggRBmB0c6Qrplc= 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=zRy22DHV; arc=none smtp.client-ip=209.85.219.202 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="zRy22DHV" Received: by mail-yb1-f202.google.com with SMTP id 3f1490d57ef6-dc693399655so13380717276.1 for ; Wed, 21 Feb 2024 19:46:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1708573602; x=1709178402; 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=raWZBAYgki529t/WhxJsWod/PF9BbEcSvIxTt/14UCc=; b=zRy22DHV0i/8GoOTEt5NG9RaIEs4ONI6qGKz6htHAyLu0Y+ze9SUdiW2cjkX0yaar/ 5py1BMb+AXTxLTxM/r5bmJE/TFtQveF8t6Wh4y7/mE/GObgFuXoGxWoJ0XU3zlQU9Y0l MkAZ9LzptdK/LCKuVz9Q4aohP6s4kottbwx+xHwg/6IMFQj+xwCiUSQO2oO5+zfKYP3L iCyh2XeE6ocTm9+OUU1ti8E5mdzxOUj3R+ooLnffQtg2CgOgdDcZs6Ej8ixOe5QcCubq meaulOtQklEC+J1kZ7eq6BQS8uW4mXGYNol8htPnb0gRT2+jSbrC+kG4X5ZpCydPSwNY +sgg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1708573602; x=1709178402; 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=raWZBAYgki529t/WhxJsWod/PF9BbEcSvIxTt/14UCc=; b=RWyhVyWfdpNJic2adAaSmGbTdG6acIJT7Ouo8tbS6m0ZV0wNjnA5wT26oJEjiEXI+S FxvmMc+ghkGWH+ztWJeN/A9S4fou9b2aAqd+X5S9besqA35Ur9tD7UDnWUzBaBxGhOA7 z4vRWfCNggEE/pVc0pdziSSijMzqLWtT4fTvtUpyB6EaF86BSLoZxAx4jgIqweC+fRbs g0/ljj2nP4qVVwirBoAySgP7RshdXuu89T/goXig7525E2VJ2C6gkg/j/NiIFXWJ85qc vLsAMvkzghgqVS7Si+72h68cHxkXyExZyfsnU1ihlLjYsNwrsIy3aVhyjfNsEBxjPoxO T4kA== X-Forwarded-Encrypted: i=1; AJvYcCXBHG2v5XxbmyZx47xuX39tSRltHC6g01Wqp4DFEAzV4Erz15nUWl3v+e/nQBE7OLxdZuhPyrX6hmOz7u+fr6OhVou9iLAuN2Rtyg== X-Gm-Message-State: AOJu0YxPLEbicxHoT5EQPFf8IADxuywytxnOhpkg03GNoyEWeZNvlGQ3 2RNnghKOppxlbYkcm87ERGOZ7d+K+NU14hxYe7hWySEziz5NFeVnbFdpftoA7ngRjJSeXb+wzs9 6nVHQpxwDNz/kYA== X-Google-Smtp-Source: AGHT+IE/lOZLkCoDwwKEREqFgcV+j6qm2injtDVFnE3QKKkoaWAEUaYOgBuNsQDaJd9X9bCZCw8l/KV68FOgUzU= X-Received: from saravanak.san.corp.google.com ([2620:15c:2d:3:451c:c6c5:1fb1:a2a1]) (user=saravanak job=sendgmr) by 2002:a25:b47:0:b0:dc7:8e30:e2e3 with SMTP id 68-20020a250b47000000b00dc78e30e2e3mr329609ybl.2.1708573602344; Wed, 21 Feb 2024 19:46:42 -0800 (PST) Date: Wed, 21 Feb 2024 19:46:22 -0800 In-Reply-To: <20240222034624.2970024-1-saravanak@google.com> Message-Id: <20240222034624.2970024-5-saravanak@google.com> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240222034624.2970024-1-saravanak@google.com> X-Mailer: git-send-email 2.44.0.rc0.258.g7320e95886-goog Subject: [PATCH v4 4/4] of: property: fw_devlink: Add support for "post-init-providers" 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 bce849f21ae2..15ccad6cba4a 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_providers, "post-init-providers", 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_providers, + .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); }