Re: [PATCH v5 16/17] FDT: Add a helper to get the subnode by given name

[Rob Herring]

On Fri, Mar 4, 2016 at 12:37 AM, Shannon Zhao  wrote:
> From: Shannon Zhao 
>
> Sometimes it needs to check if there is a subnode of given node in FDT
> by given name. Introduce this helper to get the subnode if it exists.
>
> CC: Rob Herring 
> Signed-off-by: Shannon Zhao 

Acked-by: Rob Herring 

Re: [PATCH v5 16/17] FDT: Add a helper to get the subnode by given name

[Rob Herring]

On Fri, Mar 4, 2016 at 12:37 AM, Shannon Zhao  wrote:
> From: Shannon Zhao 
>
> Sometimes it needs to check if there is a subnode of given node in FDT
> by given name. Introduce this helper to get the subnode if it exists.
>
> CC: Rob Herring 
> Signed-off-by: Shannon Zhao 

Acked-by: Rob Herring 

Re: [PATCH v5 16/17] FDT: Add a helper to get the subnode by given name

[Stefano Stabellini]

On Fri, 4 Mar 2016, Shannon Zhao wrote:
> From: Shannon Zhao 
> 
> Sometimes it needs to check if there is a subnode of given node in FDT
> by given name. Introduce this helper to get the subnode if it exists.
> 
> CC: Rob Herring 
> Signed-off-by: Shannon Zhao 

Acked-by: Stefano Stabellini 


>  drivers/of/fdt.c   | 13 +
>  include/linux/of_fdt.h |  2 ++
>  2 files changed, 15 insertions(+)
> 
> diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
> index 655f79d..09001db 100644
> --- a/drivers/of/fdt.c
> +++ b/drivers/of/fdt.c
> @@ -645,6 +645,19 @@ int __init of_scan_flat_dt(int (*it)(unsigned long node,
>  }
>  
>  /**
> + * of_get_flat_dt_subnode_by_name - get the subnode by given name
> + *
> + * @node: the parent node
> + * @uname: the name of subnode
> + * @return offset of the subnode, or -FDT_ERR_NOTFOUND if there is none
> + */
> +
> +int of_get_flat_dt_subnode_by_name(unsigned long node, const char *uname)
> +{
> + return fdt_subnode_offset(initial_boot_params, node, uname);
> +}
> +
> +/**
>   * of_get_flat_dt_root - find the root node in the flat blob
>   */
>  unsigned long __init of_get_flat_dt_root(void)
> diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h
> index df9ef38..fc28162 100644
> --- a/include/linux/of_fdt.h
> +++ b/include/linux/of_fdt.h
> @@ -52,6 +52,8 @@ extern char __dtb_end[];
>  extern int of_scan_flat_dt(int (*it)(unsigned long node, const char *uname,
>int depth, void *data),
>  void *data);
> +extern int of_get_flat_dt_subnode_by_name(unsigned long node,
> +   const char *uname);
>  extern const void *of_get_flat_dt_prop(unsigned long node, const char *name,
>  int *size);
>  extern int of_flat_dt_is_compatible(unsigned long node, const char *name);
> -- 
> 2.0.4
> 
> 

Re: [PATCH v5 16/17] FDT: Add a helper to get the subnode by given name

[Stefano Stabellini]

On Fri, 4 Mar 2016, Shannon Zhao wrote:
> From: Shannon Zhao 
> 
> Sometimes it needs to check if there is a subnode of given node in FDT
> by given name. Introduce this helper to get the subnode if it exists.
> 
> CC: Rob Herring 
> Signed-off-by: Shannon Zhao 

Acked-by: Stefano Stabellini 


>  drivers/of/fdt.c   | 13 +
>  include/linux/of_fdt.h |  2 ++
>  2 files changed, 15 insertions(+)
> 
> diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
> index 655f79d..09001db 100644
> --- a/drivers/of/fdt.c
> +++ b/drivers/of/fdt.c
> @@ -645,6 +645,19 @@ int __init of_scan_flat_dt(int (*it)(unsigned long node,
>  }
>  
>  /**
> + * of_get_flat_dt_subnode_by_name - get the subnode by given name
> + *
> + * @node: the parent node
> + * @uname: the name of subnode
> + * @return offset of the subnode, or -FDT_ERR_NOTFOUND if there is none
> + */
> +
> +int of_get_flat_dt_subnode_by_name(unsigned long node, const char *uname)
> +{
> + return fdt_subnode_offset(initial_boot_params, node, uname);
> +}
> +
> +/**
>   * of_get_flat_dt_root - find the root node in the flat blob
>   */
>  unsigned long __init of_get_flat_dt_root(void)
> diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h
> index df9ef38..fc28162 100644
> --- a/include/linux/of_fdt.h
> +++ b/include/linux/of_fdt.h
> @@ -52,6 +52,8 @@ extern char __dtb_end[];
>  extern int of_scan_flat_dt(int (*it)(unsigned long node, const char *uname,
>int depth, void *data),
>  void *data);
> +extern int of_get_flat_dt_subnode_by_name(unsigned long node,
> +   const char *uname);
>  extern const void *of_get_flat_dt_prop(unsigned long node, const char *name,
>  int *size);
>  extern int of_flat_dt_is_compatible(unsigned long node, const char *name);
> -- 
> 2.0.4
> 
> 

[PATCH v5 16/17] FDT: Add a helper to get the subnode by given name

[Shannon Zhao]

From: Shannon Zhao 

Sometimes it needs to check if there is a subnode of given node in FDT
by given name. Introduce this helper to get the subnode if it exists.

CC: Rob Herring 
Signed-off-by: Shannon Zhao 
---
 drivers/of/fdt.c   | 13 +
 include/linux/of_fdt.h |  2 ++
 2 files changed, 15 insertions(+)

diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 655f79d..09001db 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -645,6 +645,19 @@ int __init of_scan_flat_dt(int (*it)(unsigned long node,
 }
 
 /**
+ * of_get_flat_dt_subnode_by_name - get the subnode by given name
+ *
+ * @node: the parent node
+ * @uname: the name of subnode
+ * @return offset of the subnode, or -FDT_ERR_NOTFOUND if there is none
+ */
+
+int of_get_flat_dt_subnode_by_name(unsigned long node, const char *uname)
+{
+   return fdt_subnode_offset(initial_boot_params, node, uname);
+}
+
+/**
  * of_get_flat_dt_root - find the root node in the flat blob
  */
 unsigned long __init of_get_flat_dt_root(void)
diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h
index df9ef38..fc28162 100644
--- a/include/linux/of_fdt.h
+++ b/include/linux/of_fdt.h
@@ -52,6 +52,8 @@ extern char __dtb_end[];
 extern int of_scan_flat_dt(int (*it)(unsigned long node, const char *uname,
 int depth, void *data),
   void *data);
+extern int of_get_flat_dt_subnode_by_name(unsigned long node,
+ const char *uname);
 extern const void *of_get_flat_dt_prop(unsigned long node, const char *name,
   int *size);
 extern int of_flat_dt_is_compatible(unsigned long node, const char *name);
-- 
2.0.4

[PATCH v5 16/17] FDT: Add a helper to get the subnode by given name

[Shannon Zhao]

From: Shannon Zhao 

Sometimes it needs to check if there is a subnode of given node in FDT
by given name. Introduce this helper to get the subnode if it exists.

CC: Rob Herring 
Signed-off-by: Shannon Zhao 
---
 drivers/of/fdt.c   | 13 +
 include/linux/of_fdt.h |  2 ++
 2 files changed, 15 insertions(+)

diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 655f79d..09001db 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -645,6 +645,19 @@ int __init of_scan_flat_dt(int (*it)(unsigned long node,
 }
 
 /**
+ * of_get_flat_dt_subnode_by_name - get the subnode by given name
+ *
+ * @node: the parent node
+ * @uname: the name of subnode
+ * @return offset of the subnode, or -FDT_ERR_NOTFOUND if there is none
+ */
+
+int of_get_flat_dt_subnode_by_name(unsigned long node, const char *uname)
+{
+   return fdt_subnode_offset(initial_boot_params, node, uname);
+}
+
+/**
  * of_get_flat_dt_root - find the root node in the flat blob
  */
 unsigned long __init of_get_flat_dt_root(void)
diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h
index df9ef38..fc28162 100644
--- a/include/linux/of_fdt.h
+++ b/include/linux/of_fdt.h
@@ -52,6 +52,8 @@ extern char __dtb_end[];
 extern int of_scan_flat_dt(int (*it)(unsigned long node, const char *uname,
 int depth, void *data),
   void *data);
+extern int of_get_flat_dt_subnode_by_name(unsigned long node,
+ const char *uname);
 extern const void *of_get_flat_dt_prop(unsigned long node, const char *name,
   int *size);
 extern int of_flat_dt_is_compatible(unsigned long node, const char *name);
-- 
2.0.4