From: Grant Likely <grant.likely@secretlab.ca>
To: Nicolas Pitre <nicolas.pitre@linaro.org>,
Russell King <linux@arm.linux.org.uk>,
Arnd Bergmann <arnd@arndb.de>,
devicetree-discuss@lists.ozlabs.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH 02/11] of/address: Add of_find_matching_node_by_address helper
Date: Wed, 15 Jun 2011 22:41:36 -0600 [thread overview]
Message-ID: <20110616044130.29371.31242.stgit@ponder> (raw)
In-Reply-To: <20110616042653.29371.2052.stgit@ponder>
of_find_matching_node_by_address() can be used to find a device tree
node for a device at a specific address.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
---
drivers/of/address.c | 18 ++++++++++++++++++
include/linux/of_address.h | 4 ++++
2 files changed, 22 insertions(+), 0 deletions(-)
diff --git a/drivers/of/address.c b/drivers/of/address.c
index b4559c5..da1f4b9 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -577,6 +577,24 @@ int of_address_to_resource(struct device_node *dev, int index,
}
EXPORT_SYMBOL_GPL(of_address_to_resource);
+struct device_node *of_find_matching_node_by_address(struct device_node *from,
+ const struct of_device_id *matches,
+ u64 base_address)
+{
+ struct device_node *dn = of_find_matching_node(from, matches);
+ struct resource res;
+
+ while (dn) {
+ if (of_address_to_resource(dn, 0, &res))
+ continue;
+ if (res.start == base_address)
+ return dn;
+ dn = of_find_matching_node(dn, matches);
+ }
+
+ return NULL;
+}
+
/**
* of_iomap - Maps the memory mapped IO for a given device_node
diff --git a/include/linux/of_address.h b/include/linux/of_address.h
index 2feda6e..bdfc20d 100644
--- a/include/linux/of_address.h
+++ b/include/linux/of_address.h
@@ -6,6 +6,10 @@
extern u64 of_translate_address(struct device_node *np, const __be32 *addr);
extern int of_address_to_resource(struct device_node *dev, int index,
struct resource *r);
+extern struct device_node *of_find_matching_node_by_address(
+ struct device_node *from,
+ const struct of_device_id *matches,
+ u64 base_address);
extern void __iomem *of_iomap(struct device_node *device, int index);
/* Extract an address from a device, returns the region size and
WARNING: multiple messages have this Message-ID (diff)
From: Grant Likely <grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>
To: Nicolas Pitre
<nicolas.pitre-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
Russell King <linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>,
Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>,
devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.orglinu
Subject: [RFC PATCH 02/11] of/address: Add of_find_matching_node_by_address helper
Date: Wed, 15 Jun 2011 22:41:36 -0600 [thread overview]
Message-ID: <20110616044130.29371.31242.stgit@ponder> (raw)
In-Reply-To: <20110616042653.29371.2052.stgit@ponder>
of_find_matching_node_by_address() can be used to find a device tree
node for a device at a specific address.
Signed-off-by: Grant Likely <grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>
---
drivers/of/address.c | 18 ++++++++++++++++++
include/linux/of_address.h | 4 ++++
2 files changed, 22 insertions(+), 0 deletions(-)
diff --git a/drivers/of/address.c b/drivers/of/address.c
index b4559c5..da1f4b9 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -577,6 +577,24 @@ int of_address_to_resource(struct device_node *dev, int index,
}
EXPORT_SYMBOL_GPL(of_address_to_resource);
+struct device_node *of_find_matching_node_by_address(struct device_node *from,
+ const struct of_device_id *matches,
+ u64 base_address)
+{
+ struct device_node *dn = of_find_matching_node(from, matches);
+ struct resource res;
+
+ while (dn) {
+ if (of_address_to_resource(dn, 0, &res))
+ continue;
+ if (res.start == base_address)
+ return dn;
+ dn = of_find_matching_node(dn, matches);
+ }
+
+ return NULL;
+}
+
/**
* of_iomap - Maps the memory mapped IO for a given device_node
diff --git a/include/linux/of_address.h b/include/linux/of_address.h
index 2feda6e..bdfc20d 100644
--- a/include/linux/of_address.h
+++ b/include/linux/of_address.h
@@ -6,6 +6,10 @@
extern u64 of_translate_address(struct device_node *np, const __be32 *addr);
extern int of_address_to_resource(struct device_node *dev, int index,
struct resource *r);
+extern struct device_node *of_find_matching_node_by_address(
+ struct device_node *from,
+ const struct of_device_id *matches,
+ u64 base_address);
extern void __iomem *of_iomap(struct device_node *device, int index);
/* Extract an address from a device, returns the region size and
WARNING: multiple messages have this Message-ID (diff)
From: grant.likely@secretlab.ca (Grant Likely)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH 02/11] of/address: Add of_find_matching_node_by_address helper
Date: Wed, 15 Jun 2011 22:41:36 -0600 [thread overview]
Message-ID: <20110616044130.29371.31242.stgit@ponder> (raw)
In-Reply-To: <20110616042653.29371.2052.stgit@ponder>
of_find_matching_node_by_address() can be used to find a device tree
node for a device at a specific address.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
---
drivers/of/address.c | 18 ++++++++++++++++++
include/linux/of_address.h | 4 ++++
2 files changed, 22 insertions(+), 0 deletions(-)
diff --git a/drivers/of/address.c b/drivers/of/address.c
index b4559c5..da1f4b9 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -577,6 +577,24 @@ int of_address_to_resource(struct device_node *dev, int index,
}
EXPORT_SYMBOL_GPL(of_address_to_resource);
+struct device_node *of_find_matching_node_by_address(struct device_node *from,
+ const struct of_device_id *matches,
+ u64 base_address)
+{
+ struct device_node *dn = of_find_matching_node(from, matches);
+ struct resource res;
+
+ while (dn) {
+ if (of_address_to_resource(dn, 0, &res))
+ continue;
+ if (res.start == base_address)
+ return dn;
+ dn = of_find_matching_node(dn, matches);
+ }
+
+ return NULL;
+}
+
/**
* of_iomap - Maps the memory mapped IO for a given device_node
diff --git a/include/linux/of_address.h b/include/linux/of_address.h
index 2feda6e..bdfc20d 100644
--- a/include/linux/of_address.h
+++ b/include/linux/of_address.h
@@ -6,6 +6,10 @@
extern u64 of_translate_address(struct device_node *np, const __be32 *addr);
extern int of_address_to_resource(struct device_node *dev, int index,
struct resource *r);
+extern struct device_node *of_find_matching_node_by_address(
+ struct device_node *from,
+ const struct of_device_id *matches,
+ u64 base_address);
extern void __iomem *of_iomap(struct device_node *device, int index);
/* Extract an address from a device, returns the region size and
next prev parent reply other threads:[~2011-06-16 4:41 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-16 4:40 [RFC PATCH 00/11] Full device tree support for ARM Versatile Grant Likely
2011-06-16 4:40 ` Grant Likely
2011-06-16 4:40 ` Grant Likely
2011-06-16 4:41 ` [RFC PATCH 01/11] irq: add irq_domain translation infrastructure Grant Likely
2011-06-16 4:41 ` Grant Likely
2011-06-16 4:41 ` Grant Likely
2011-06-20 9:54 ` Marc Zyngier
2011-06-20 9:54 ` Marc Zyngier
2011-06-20 9:54 ` Marc Zyngier
2011-06-16 4:41 ` Grant Likely [this message]
2011-06-16 4:41 ` [RFC PATCH 02/11] of/address: Add of_find_matching_node_by_address helper Grant Likely
2011-06-16 4:41 ` Grant Likely
2011-06-16 4:41 ` [RFC PATCH 03/11] dt/irq: add irq_domain_add_simple() helper Grant Likely
2011-06-16 4:41 ` Grant Likely
2011-06-16 4:41 ` Grant Likely
2011-06-16 14:04 ` Rob Herring
2011-06-16 14:04 ` Rob Herring
2011-06-16 14:04 ` Rob Herring
2011-06-16 14:21 ` Rob Herring
2011-06-16 14:21 ` Rob Herring
2011-06-16 14:21 ` Rob Herring
2011-06-16 16:57 ` Grant Likely
2011-06-16 16:57 ` Grant Likely
2011-06-16 16:57 ` Grant Likely
2011-06-16 16:56 ` Grant Likely
2011-06-16 16:56 ` Grant Likely
2011-06-16 16:56 ` Grant Likely
2011-06-16 4:41 ` [RFC PATCH 04/11] dt: add of_platform_populate() for creating device from the device tree Grant Likely
2011-06-16 4:41 ` Grant Likely
2011-06-16 4:41 ` Grant Likely
2011-06-16 4:42 ` [RFC PATCH 05/11] dt: Add default match table for bus ids Grant Likely
2011-06-16 4:42 ` Grant Likely
2011-06-16 4:42 ` Grant Likely
2011-06-16 4:42 ` [RFC PATCH 06/11] drivers/amba: create devices from device tree Grant Likely
2011-06-16 4:42 ` Grant Likely
2011-06-16 4:42 ` Grant Likely
2011-06-16 4:42 ` [RFC PATCH 07/11] dt/platform: allow device name to be overridden Grant Likely
2011-06-16 4:42 ` Grant Likely
2011-06-16 4:42 ` Grant Likely
2011-06-16 4:42 ` [RFC PATCH 08/11] powerpc/5200: convert mpc5200 to use of_platform_populate() Grant Likely
2011-06-16 4:42 ` Grant Likely
2011-06-16 4:42 ` Grant Likely
2011-06-16 4:42 ` [RFC PATCH 09/11] arm/dt: Add dt machine definition Grant Likely
2011-06-16 4:42 ` Grant Likely
2011-06-16 4:42 ` Grant Likely
2011-07-08 14:30 ` Rob Herring
2011-07-08 14:30 ` Rob Herring
2011-06-16 4:43 ` [RFC PATCH 10/11] arm/dt: Add skeleton dtsi file Grant Likely
2011-06-16 4:43 ` Grant Likely
2011-06-16 4:43 ` Grant Likely
2011-06-16 4:43 ` [RFC PATCH 11/11] arm/versatile: Add device tree support Grant Likely
2011-06-16 4:43 ` Grant Likely
2011-06-16 4:43 ` Grant Likely
2011-06-16 14:19 ` Rob Herring
2011-06-16 14:19 ` Rob Herring
2011-06-16 15:42 ` Grant Likely
2011-06-16 15:42 ` Grant Likely
2011-06-16 15:42 ` Grant Likely
2011-06-16 14:20 ` Arnd Bergmann
2011-06-16 14:20 ` Arnd Bergmann
2011-06-16 14:20 ` Arnd Bergmann
2011-06-16 14:56 ` Grant Likely
2011-06-16 14:56 ` Grant Likely
2011-06-17 1:11 ` Shawn Guo
2011-06-17 1:11 ` Shawn Guo
2011-06-17 1:11 ` Shawn Guo
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