From patchwork Mon Feb 12 21:31:45 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Saravana Kannan X-Patchwork-Id: 772490 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 6FF124E1BD for ; Mon, 12 Feb 2024 21:32:05 +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=1707773527; cv=none; b=l0a4FObi3ryzkKcCpiIEVn7JBNYRmgJvgOO9s/XzALTkzlDvPlMFQy75vMPE7PioEhzTEasUoReehWwH0TjyKFeUk+WzO3RaCOlCF2u4zPV4gsNvGQ7WssDVp+gkf2o1Gx7l9JMJXKqyrHTbzAmMma0G8o8BnXRXhi63JD2VtuM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707773527; c=relaxed/simple; bh=09nOuvy1xCjK1iYqCopDQXrnPVKpNm2a5rJaJXsm9lU=; h=Date:In-Reply-To:Message-Id:Mime-Version:References:Subject:From: To:Cc:Content-Type; b=gPTObIHDc3YOxhcWmHFVs4isG0eS0Idwf1jxzziL218mtx/JUjF2VR2sZsYbi3QYnpkK+3Myuw/AZiavasZrYZrElQEXdE3K5Dgh0GsR0vpC+Hzhu1I4NHwEji2Q+oX+wVE7rb+yzQ3aHve8K71RQO3jvqvxrjGOnm1fflxAyg8= 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=OHBx6F9b; 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="OHBx6F9b" Received: by mail-yw1-f202.google.com with SMTP id 00721157ae682-5efe82b835fso84152157b3.0 for ; Mon, 12 Feb 2024 13:32:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1707773524; x=1708378324; 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=OHBx6F9bhwsJvj9SRIzninQd62CTd0mat67Ry0G4dzfpMXC9lLLH/2cqAtkPZBKWOs rCJlNGFOdzUHHSyx00VaV5roKpsat69I49vXVWf9nM10D5g6AdFuX3akbE1MiBcmwf/3 U//fWlNw92ilZqOqSovV9mdpvdT5dJ202Xq3Gnl5XmSg5+K/5u0KYaPEpqu1aRUQ7I8R bMzmPnomy8vPKmO1iyBgm0mVL9Emn4B+OM9TotHLWNPRZjnhPKrNz83/FOQvMN7JijYp UeCGftAtQwFbnm3brtQMnWqc1osOv0HsjGW9FkVb887vW7Th/2S/CTchqaHupDFuZYjz CGjw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1707773524; x=1708378324; 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=AAdCRzwOwnPqhOv/LDtj98fHw0CZ8mi4gjmZI1mbI15WcpsMpJB1I60+rjCaeWHzFD dED3vXyhAFotUh0P9Rw4uwvihrnXdowvx2IyGw+IhvJJjQO6E4OX1ZoIVbWUx+E3siVv 3uVopeRcYb/DIUDVuV2XMkBm3ipwO6ID68i9o/CKMeIami9NpGM2KQJvlHgnA77iYo3p i3NPQonOEH2i2SeA1FyC3I8TIx4CORKaYo1lieNSeWCIGNNE1CeMxrUJfRBnAcHQJLeD sPSozMgCZ5jQgxuPulhFCPvoCpX7t9puxOlr5kxXviaCM4BuEI7xzXMbLBvmskYeFvne cHig== X-Forwarded-Encrypted: i=1; AJvYcCWoWdmLoPTyznWdPQzyyddBsJ8YkztU10GiFY6dxCV1sdIfJ8nWPnESUUUEk70Fkuh96wFikdfA+s6yBd1rrWmLyo7hcFWuiIeo X-Gm-Message-State: AOJu0YxGgBNSiO2RMCck1VlRmSfeeaByylZM6FcN/y85YR7H4xAy65wf FYTxUQoUtYTe5xVXEKtg5Nf3OlNi259vlUThnrD2HEYR+GYRQW/Dv/MghfTgswF1oIgkrIjbkO/ unpPBERQy403cKA== X-Google-Smtp-Source: AGHT+IHiNYw+GukjhfLl9L/fVI79H8vPnI8fJB4kfhzgTN7MWnsY3Vn7qmvxy/2wW9UUYOelc46oL3dxnDIBR8A= X-Received: from saravanak.san.corp.google.com ([2620:15c:2d:3:496d:5de1:a404:8bee]) (user=saravanak job=sendgmr) by 2002:a05:6902:120b:b0:dc7:6efe:1aab with SMTP id s11-20020a056902120b00b00dc76efe1aabmr1793262ybu.6.1707773524580; Mon, 12 Feb 2024 13:32:04 -0800 (PST) Date: Mon, 12 Feb 2024 13:31:45 -0800 In-Reply-To: <20240212213147.489377-1-saravanak@google.com> Message-Id: <20240212213147.489377-5-saravanak@google.com> Precedence: bulk X-Mailing-List: linux-efi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240212213147.489377-1-saravanak@google.com> X-Mailer: git-send-email 2.43.0.687.g38aa6559b0-goog Subject: [PATCH v2 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 , Len Brown , Andy Shevchenko , Daniel Scally , Heikki Krogerus , Sakari Ailus 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); }