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From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
To: robh+dt@kernel.org, devicetree@vger.kernel.org,
	frowand.list@gmail.com, linux-arm-kernel@lists.infradead.org,
	linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-msm@vger.kernel.org, dmaengine@vger.kernel.org,
	etnaviv@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
	xen-devel@lists.xenproject.org, linux-tegra@vger.kernel.org,
	linux-media@vger.kernel.org, linux-pci@vger.kernel.org
Cc: mbrugger@suse.com, robin.murphy@arm.com, f.fainelli@gmail.com,
	james.quinlan@broadcom.com, wahrenst@gmx.net,
	Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Subject: [PATCH 05/11] of: expose __of_get_dma_parent() to OF subsystem
Date: Tue, 24 Sep 2019 20:12:36 +0200
Message-ID: <20190924181244.7159-6-nsaenzjulienne@suse.de> (raw)
In-Reply-To: <20190924181244.7159-1-nsaenzjulienne@suse.de>

The function was only available locally to of/address.c, make it
available to the OF subsystem.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---

 drivers/of/address.c    | 18 ------------------
 drivers/of/base.c       | 25 +++++++++++++++++++++++++
 drivers/of/of_private.h |  2 ++
 3 files changed, 27 insertions(+), 18 deletions(-)

diff --git a/drivers/of/address.c b/drivers/of/address.c
index c9eb4ebcc2e9..53666063e938 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -681,24 +681,6 @@ u64 of_translate_address(struct device_node *dev, const __be32 *in_addr)
 }
 EXPORT_SYMBOL(of_translate_address);
 
-static struct device_node *__of_get_dma_parent(const struct device_node *np)
-{
-	struct of_phandle_args args;
-	int ret, index;
-
-	index = of_property_match_string(np, "interconnect-names", "dma-mem");
-	if (index < 0)
-		return of_get_parent(np);
-
-	ret = of_parse_phandle_with_args(np, "interconnects",
-					 "#interconnect-cells",
-					 index, &args);
-	if (ret < 0)
-		return of_get_parent(np);
-
-	return of_node_get(args.np);
-}
-
 static u64 of_translate_dma_address_parent(struct device_node *parent,
 					   const __be32 *in_addr)
 {
diff --git a/drivers/of/base.c b/drivers/of/base.c
index 94f83051910c..ec161e6b5222 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -716,6 +716,31 @@ struct device_node *of_get_parent(const struct device_node *node)
 }
 EXPORT_SYMBOL(of_get_parent);
 
+/**
+ *	__of_get_dma_parent - Get a node's dma parent if any
+ *	@node:	Node to get dma parent
+ *
+ *	Returns a node pointer with refcount incremented, use
+ *	of_node_put() on it when done.
+ */
+struct device_node *__of_get_dma_parent(const struct device_node *np)
+{
+	struct of_phandle_args args;
+	int ret, index;
+
+	index = of_property_match_string(np, "interconnect-names", "dma-mem");
+	if (index < 0)
+		return of_get_parent(np);
+
+	ret = of_parse_phandle_with_args(np, "interconnects",
+					 "#interconnect-cells",
+					 index, &args);
+	if (ret < 0)
+		return of_get_parent(np);
+
+	return of_node_get(args.np);
+}
+
 /**
  *	of_get_next_parent - Iterate to a node's parent
  *	@node:	Node to get parent of
diff --git a/drivers/of/of_private.h b/drivers/of/of_private.h
index b528304be244..63bb16cc454c 100644
--- a/drivers/of/of_private.h
+++ b/drivers/of/of_private.h
@@ -42,6 +42,8 @@ extern struct kset *of_kset;
 int __of_n_addr_cells_parent(struct device_node *parent);
 int __of_n_size_cells_parent(struct device_node *parent);
 
+struct device_node *__of_get_dma_parent(const struct device_node *np);
+
 #if defined(CONFIG_OF_DYNAMIC)
 extern int of_property_notify(int action, struct device_node *np,
 			      struct property *prop, struct property *old_prop);
-- 
2.23.0


  parent reply index

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-24 18:12 [PATCH 00/11] of: Fix DMA configuration for non-DT masters Nicolas Saenz Julienne
2019-09-24 18:12 ` [PATCH 01/11] of: address: clean-up unused variable in of_dma_get_range() Nicolas Saenz Julienne
2019-09-24 18:12 ` [PATCH 02/11] of: base: introduce __of_n_*_cells_parent() Nicolas Saenz Julienne
2019-09-24 18:12 ` [PATCH 03/11] of: address: use parent DT node in bus->count_cells() Nicolas Saenz Julienne
2019-09-24 18:12 ` [PATCH 04/11] of: address: introduce of_translate_dma_address_parent() Nicolas Saenz Julienne
2019-09-24 18:12 ` Nicolas Saenz Julienne [this message]
2019-09-24 18:12 ` [PATCH 06/11] of: address: use parent OF node in of_dma_get_range() Nicolas Saenz Julienne
2019-09-24 18:12 ` [PATCH 07/11] dts: arm64: layerscape: add dma-ranges property to qoric-mc node Nicolas Saenz Julienne
2019-10-14  8:28   ` Shawn Guo
2019-10-14 10:00     ` Nicolas Saenz Julienne
2019-10-14 11:09       ` Shawn Guo
2019-09-24 18:12 ` [PATCH 08/11] dts: arm64: layerscape: add dma-ranges property to pcie nodes Nicolas Saenz Julienne
2019-10-14  8:29   ` Shawn Guo
2019-09-24 18:12 ` [PATCH 09/11] of: device: remove comment in of_dma_configure() Nicolas Saenz Julienne
2019-09-24 18:12 ` [PATCH 10/11] of: device: introduce of_dma_configure_parent() Nicolas Saenz Julienne
2019-09-24 18:12 ` [PATCH 11/11] of: simplify of_dma_config()'s arguments Nicolas Saenz Julienne
2019-09-24 21:59 ` [PATCH 00/11] of: Fix DMA configuration for non-DT masters Rob Herring
2019-09-25 14:52   ` Nicolas Saenz Julienne
2019-09-25 15:09     ` Robin Murphy
2019-09-25 15:30       ` Nicolas Saenz Julienne
2019-09-25 16:16         ` Rob Herring
2019-09-25 16:52           ` Robin Murphy
2019-09-25 21:33             ` Rob Herring
2019-09-26 10:44               ` Nicolas Saenz Julienne
2019-09-26 11:20                 ` Robin Murphy
2019-10-02 18:28                   ` Florian Fainelli
2019-09-25 16:07     ` Rob Herring

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