From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Tue, 08 Mar 2022 12:52:43 +0100 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1nRYOR-004bto-OB for lore@lore.pengutronix.de; Tue, 08 Mar 2022 12:52:43 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:e::133]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nRYOQ-00074z-1S for lore@pengutronix.de; Tue, 08 Mar 2022 12:52:42 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Cc:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=j5MEUcXghf6OvSYT0ayKF2Dc6CT1cvwET3/igXTg5IQ=; b=xAegFKGOtrD6en bIgViaP0CoXUpIXi4mW1wrjqfrl6OLYGX3JCL7dXgGbUBEHBfMP5M6iMCgXKBojdtpOW8M3hgJhQu ulYHL5FrPUiTcqao/SFz+DuxN9c3ybBPA7+Id76g9AtzuszkQE6wmzJ24uyvyULU/rg3NVnFEA8SB B2EJiyIYKqCfLnAh1MtHWx85aAe+BPUlhDNK1McVq6QI0JmKV9AsSYS5h/Kt628u3Sc6bRFt6jedr KBnh9rl/owSP0V62moe0ajSxYD2jz/e+TH6JT11ZgtI0HVOu0OX1UfEsPtVBTC386niTlHOcUfKoO ckuqLGKJ52puek7m4VuA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nRYNA-004DUc-Ao; Tue, 08 Mar 2022 11:51:24 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nRYN0-004DSX-0q for barebox@lists.infradead.org; Tue, 08 Mar 2022 11:51:15 +0000 Received: from dude02.hi.pengutronix.de ([2001:67c:670:100:1d::28]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nRYMq-0006ip-Rc; Tue, 08 Mar 2022 12:51:04 +0100 Received: from sha by dude02.hi.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1nRYMq-00FdcU-4k; Tue, 08 Mar 2022 12:51:04 +0100 From: Sascha Hauer To: Barebox List Date: Tue, 8 Mar 2022 12:51:01 +0100 Message-Id: <20220308115103.3664883-4-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220308115103.3664883-1-s.hauer@pengutronix.de> References: <20220308115103.3664883-1-s.hauer@pengutronix.de> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220308_035114_107901_908827BB X-CRM114-Status: GOOD ( 15.77 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:e::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-4.9 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE, T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH 3/5] of: Add of_find_node_by_name() with Linux semantics X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.ext.pengutronix.de) Signed-off-by: Sascha Hauer --- drivers/of/base.c | 38 ++++++++++++++++++++++++++++++++++++++ include/of.h | 20 ++++++++++++++++++++ 2 files changed, 58 insertions(+) diff --git a/drivers/of/base.c b/drivers/of/base.c index d5cbb12a29..83291c4785 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -23,6 +23,21 @@ static struct device_node *root_node; +bool of_node_name_eq(const struct device_node *np, const char *name) +{ + const char *node_name; + size_t len; + + if (!np) + return false; + + node_name = kbasename(np->full_name); + len = strchrnul(node_name, '@') - node_name; + + return (strlen(name) == len) && (strncmp(node_name, name, len) == 0); +} +EXPORT_SYMBOL(of_node_name_eq); + /* * Iterate over all nodes of a tree. As a devicetree does not * have a dedicated list head, the start node (usually the root @@ -560,6 +575,29 @@ struct device_node *of_find_node_by_name_address(struct device_node *from, } EXPORT_SYMBOL(of_find_node_by_name_address); +/** + * of_find_node_by_name - Find a node by its "name" property + * @from: The node to start searching from or NULL, the node + * you pass will not be searched, only the next one + * will; typically, you pass what the previous call + * returned. + * @name: The name string to match against + * + * Returns a pointer to the node found or NULL. + */ +struct device_node *of_find_node_by_name(struct device_node *from, + const char *name) +{ + struct device_node *np; + + of_tree_for_each_node_from(np, from) + if (np->name && of_node_name_eq(np, name)) + return np; + + return NULL; +} +EXPORT_SYMBOL(of_find_node_by_name); + /** * of_find_node_by_type - Find a node by its "device_type" property * @from: The node to start searching from, or NULL to start searching diff --git a/include/of.h b/include/of.h index 2c1a3f5510..9089409f9f 100644 --- a/include/of.h +++ b/include/of.h @@ -120,6 +120,7 @@ extern int of_bus_n_addr_cells(struct device_node *np); extern int of_n_addr_cells(struct device_node *np); extern int of_bus_n_size_cells(struct device_node *np); extern int of_n_size_cells(struct device_node *np); +extern bool of_node_name_eq(const struct device_node *np, const char *name); extern struct property *of_find_property(const struct device_node *np, const char *name, int *lenp); @@ -136,6 +137,8 @@ extern struct property *of_new_property_const(struct device_node *node, const void *data, int len); extern void of_delete_property(struct property *pp); +extern struct device_node *of_find_node_by_name(struct device_node *from, + const char *name); extern struct device_node *of_find_node_by_name_address(struct device_node *from, const char *name); extern struct device_node *of_find_node_by_path_from(struct device_node *from, @@ -313,6 +316,11 @@ struct device_node *of_find_node_by_path_or_alias(struct device_node *root, int of_autoenable_device_by_path(char *path); int of_autoenable_i2c_by_component(char *path); #else +static inline bool of_node_name_eq(const struct device_node *np, const char *name) +{ + return false; +} + static inline int of_parse_partitions(struct cdev *cdev, struct device_node *node) { @@ -653,6 +661,12 @@ static inline struct device_node *of_find_node_by_path(const char *path) return NULL; } +static inline struct device_node *of_find_node_by_name(struct device_node *from, + const char *name) +{ + return NULL; +} + static inline struct device_node *of_find_node_by_name_address(struct device_node *from, const char *name) { @@ -824,12 +838,18 @@ static inline int of_autoenable_i2c_by_component(char *path) #define for_each_property_of_node(dn, pp) \ list_for_each_entry(pp, &dn->properties, list) +#define for_each_node_by_name(dn, name) \ + for (dn = of_find_node_by_name(NULL, name); dn; \ + dn = of_find_node_by_name(dn, name)) #define for_each_node_by_name_address(dn, name) \ for (dn = of_find_node_by_name_address(NULL, name); dn; \ dn = of_find_node_by_name_address(dn, name)) #define for_each_node_by_type(dn, type) \ for (dn = of_find_node_by_type(NULL, type); dn; \ dn = of_find_node_by_type(dn, type)) +#define for_each_node_by_name_from(dn, root, name) \ + for (dn = of_find_node_by_name(root, name); dn; \ + dn = of_find_node_by_name(dn, name)) #define for_each_node_by_name_address_from(dn, root, name) \ for (dn = of_find_node_by_name_address(root, name); dn; \ dn = of_find_node_by_name_address(dn, name)) -- 2.30.2 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox