From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kuninori Morimoto Subject: [PATCH 1/6] of_graph: add of_graph_get_remote_endpoint() Date: Thu, 19 Jan 2017 06:34:36 +0000 Message-ID: <87mven4l1v.wl%kuninori.morimoto.gx@renesas.com> References: <87o9z34l3o.wl%kuninori.morimoto.gx@renesas.com> Mime-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset="US-ASCII" Return-path: In-Reply-To: <87o9z34l3o.wl%kuninori.morimoto.gx@renesas.com> Sender: linux-kernel-owner@vger.kernel.org To: Rob Herring , Frank Rowand Cc: Linux-Kernel , Linux-DT , Laurent , Tomi Valkeinen , David Airlie , Sean Paul , Peter Chen , Peter Ujfalusi , Benoit Parrot , Mauro Carvalho Chehab , Javier Martinez Canillas , Sakari Ailus , Bartlomiej Zolnierkiewicz List-Id: devicetree@vger.kernel.org From: Kuninori Morimoto It should use same method to get same result. To getting remote-endpoint node, let's use of_graph_get_remote_endpoint() Signed-off-by: Kuninori Morimoto --- drivers/of/base.c | 18 ++++++++++++++++-- include/linux/of_graph.h | 8 ++++++++ 2 files changed, 24 insertions(+), 2 deletions(-) diff --git a/drivers/of/base.c b/drivers/of/base.c index d4bea3c..5391a9b5 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -2426,6 +2426,20 @@ struct device_node *of_graph_get_endpoint_by_regs( EXPORT_SYMBOL(of_graph_get_endpoint_by_regs); /** + * of_graph_get_remote_endpoint() - get remote endpoint node + * @node: pointer to a local endpoint device_node + * + * Return: Remote endpoint node associated with remote endpoint node linked + * to @node. Use of_node_put() on it when done. + */ +struct device_node *of_graph_get_remote_endpoint(const struct device_node *node) +{ + /* Get remote endpoint node. */ + return of_parse_phandle(node, "remote-endpoint", 0); +} +EXPORT_SYMBOL(of_graph_get_remote_endpoint); + +/** * of_graph_get_remote_port_parent() - get remote port's parent node * @node: pointer to a local endpoint device_node * @@ -2439,7 +2453,7 @@ struct device_node *of_graph_get_remote_port_parent( unsigned int depth; /* Get remote endpoint node. */ - np = of_parse_phandle(node, "remote-endpoint", 0); + np = of_graph_get_remote_endpoint(node); /* Walk 3 levels up only if there is 'ports' node. */ for (depth = 3; depth && np; depth--) { @@ -2463,7 +2477,7 @@ struct device_node *of_graph_get_remote_port(const struct device_node *node) struct device_node *np; /* Get remote endpoint node. */ - np = of_parse_phandle(node, "remote-endpoint", 0); + np = of_graph_get_remote_endpoint(node); if (!np) return NULL; return of_get_next_parent(np); diff --git a/include/linux/of_graph.h b/include/linux/of_graph.h index bb3a5a2..d9d6d9c 100644 --- a/include/linux/of_graph.h +++ b/include/linux/of_graph.h @@ -48,6 +48,8 @@ struct device_node *of_graph_get_next_endpoint(const struct device_node *parent, struct device_node *previous); struct device_node *of_graph_get_endpoint_by_regs( const struct device_node *parent, int port_reg, int reg); +struct device_node *of_graph_get_remote_endpoint( + const struct device_node *node); struct device_node *of_graph_get_remote_port_parent( const struct device_node *node); struct device_node *of_graph_get_remote_port(const struct device_node *node); @@ -78,6 +80,12 @@ static inline struct device_node *of_graph_get_endpoint_by_regs( return NULL; } +static inline struct device_node *of_graph_get_remote_endpoint( + const struct device_node *node) +{ + return NULL; +} + static inline struct device_node *of_graph_get_remote_port_parent( const struct device_node *node) { -- 1.9.1