core: introduce dev_read_addr_name[_size]_ptr() functions

Same as dev_read_addr_name[_size](), but returns a pointer, cast
through map_sysmem().

Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

4 files changed, 114 insertions, 0 deletions

diff --git a/drivers/core/fdtaddr.c b/drivers/core/fdtaddr.c
index 0f4eff6707..8e774d49ce 100644
--- a/drivers/core/fdtaddr.c
+++ b/drivers/core/fdtaddr.c
@@ -153,6 +153,16 @@ fdt_addr_t devfdt_get_addr_name(const struct udevice *dev, const char *name)
 #endif
 }
 
+void *devfdt_get_addr_name_ptr(const struct udevice *dev, const char *name)
+{
+	fdt_addr_t addr = devfdt_get_addr_name(dev, name);
+
+	if (addr == FDT_ADDR_T_NONE)
+		return NULL;
+
+	return map_sysmem(addr, 0);
+}
+
 fdt_addr_t devfdt_get_addr_size_name(const struct udevice *dev,
 				     const char *name, fdt_size_t *size)
 {
@@ -170,6 +180,17 @@ fdt_addr_t devfdt_get_addr_size_name(const struct udevice *dev,
 #endif
 }
 
+void *devfdt_get_addr_size_name_ptr(const struct udevice *dev,
+				    const char *name, fdt_size_t *size)
+{
+	fdt_addr_t addr = devfdt_get_addr_size_name(dev, name, size);
+
+	if (addr == FDT_ADDR_T_NONE)
+		return NULL;
+
+	return map_sysmem(addr, 0);
+}
+
 fdt_addr_t devfdt_get_addr(const struct udevice *dev)
 {
 	return devfdt_get_addr_index(dev, 0);
diff --git a/drivers/core/read.c b/drivers/core/read.c
index 419013451f..1a4a95cdde 100644
--- a/drivers/core/read.c
+++ b/drivers/core/read.c
@@ -181,6 +181,16 @@ fdt_addr_t dev_read_addr_name(const struct udevice *dev, const char *name)
 		return dev_read_addr_index(dev, index);
 }
 
+void *dev_read_addr_name_ptr(const struct udevice *dev, const char *name)
+{
+	fdt_addr_t addr = dev_read_addr_name(dev, name);
+
+	if (addr == FDT_ADDR_T_NONE)
+		return NULL;
+
+	return map_sysmem(addr, 0);
+}
+
 fdt_addr_t dev_read_addr_size_name(const struct udevice *dev, const char *name,
 				   fdt_size_t *size)
 {
@@ -192,6 +202,17 @@ fdt_addr_t dev_read_addr_size_name(const struct udevice *dev, const char *name,
 		return dev_read_addr_size_index(dev, index, size);
 }
 
+void *dev_read_addr_size_name_ptr(const struct udevice *dev, const char *name,
+				  fdt_size_t *size)
+{
+	fdt_addr_t addr = dev_read_addr_size_name(dev, name, size);
+
+	if (addr == FDT_ADDR_T_NONE)
+		return NULL;
+
+	return map_sysmem(addr, 0);
+}
+
 void *dev_remap_addr_name(const struct udevice *dev, const char *name)
 {
 	fdt_addr_t addr = dev_read_addr_name(dev, name);
diff --git a/include/dm/fdtaddr.h b/include/dm/fdtaddr.h
index c577d4369c..bf8132deb8 100644
--- a/include/dm/fdtaddr.h
+++ b/include/dm/fdtaddr.h
@@ -147,6 +147,19 @@ void *devfdt_get_addr_size_index_ptr(const struct udevice *dev, int index,
 fdt_addr_t devfdt_get_addr_name(const struct udevice *dev, const char *name);
 
 /**
+ * devfdt_get_addr_name_ptr() - Get the reg property of a device as a pointer,
+ *                              indexed by name
+ *
+ * @dev: Pointer to a device
+ * @name: the 'reg' property can hold a list of <addr, size> pairs, with the
+ *	  'reg-names' property providing named-based identification. @name
+ *	  indicates the value to search for in 'reg-names'.
+ *
+ * Return: Pointer to addr, or NULL if there is no such property
+ */
+void *devfdt_get_addr_name_ptr(const struct udevice *dev, const char *name);
+
+/**
  * devfdt_get_addr_size_name() - Get the reg property and its size for a device,
  *				 indexed by name
  *
@@ -165,6 +178,24 @@ fdt_addr_t devfdt_get_addr_size_name(const struct udevice *dev,
 				     const char *name, fdt_size_t *size);
 
 /**
+ * devfdt_get_addr_size_name_ptr() - Get the reg property for a device as a
+ *                                   pointer, indexed by name
+ *
+ * Returns the address and size specified in the 'reg' property of a device.
+ *
+ * @dev: Pointer to a device
+ * @name: the 'reg' property can hold a list of <addr, size> pairs, with the
+ *	  'reg-names' property providing named-based identification. @name
+ *	  indicates the value to search for in 'reg-names'.
+ * @size: Pointer to size variable - this function returns the size
+ *        specified in the 'reg' property here
+ *
+ * Return: Pointer to addr, or NULL if there is no such property
+ */
+void *devfdt_get_addr_size_name_ptr(const struct udevice *dev,
+				    const char *name, fdt_size_t *size);
+
+/**
  * devfdt_get_addr_pci() - Read an address and handle PCI address translation
  *
  * @dev: Device to read from
diff --git a/include/dm/read.h b/include/dm/read.h
index 517795cc20..894bc698bb 100644
--- a/include/dm/read.h
+++ b/include/dm/read.h
@@ -285,6 +285,19 @@ void *dev_remap_addr_index(const struct udevice *dev, int index);
 fdt_addr_t dev_read_addr_name(const struct udevice *dev, const char *name);
 
 /**
+ * dev_read_addr_name_ptr() - Get the reg property of a device as a pointer,
+ *                            indexed by name
+ *
+ * @dev: Device to read from
+ * @name: the 'reg' property can hold a list of <addr, size> pairs, with the
+ *	  'reg-names' property providing named-based identification. @name
+ *	  indicates the value to search for in 'reg-names'.
+ *
+ * Return: pointer or NULL if not found
+ */
+void *dev_read_addr_name_ptr(const struct udevice *dev, const char *name);
+
+/**
  * dev_read_addr_size_name() - Get the reg property of a device, indexed by name
  *
  * @dev: Device to read from
@@ -299,6 +312,21 @@ fdt_addr_t dev_read_addr_size_name(const struct udevice *dev, const char *name,
 				   fdt_size_t *size);
 
 /**
+ * dev_read_addr_size_name_ptr() - Get the reg property of a device as a pointer,
+ *                                 indexed by name
+ *
+ * @dev: Device to read from
+ * @name: the 'reg' property can hold a list of <addr, size> pairs, with the
+ *	  'reg-names' property providing named-based identification. @name
+ *	  indicates the value to search for in 'reg-names'.
+ *  @size: place to put size value (on success)
+ *
+ * Return: pointer or NULL if not found
+ */
+void *dev_read_addr_size_name_ptr(const struct udevice *dev, const char *name,
+				  fdt_size_t *size);
+
+/**
  * dev_remap_addr_name() - Get the reg property of a device, indexed by name,
  *                         as a memory-mapped I/O pointer
  *
@@ -980,6 +1008,12 @@ static inline fdt_addr_t dev_read_addr_name(const struct udevice *dev,
 	return devfdt_get_addr_name(dev, name);
 }
 
+static inline void *dev_read_addr_name_ptr(const struct udevice *dev,
+					   const char *name)
+{
+	return devfdt_get_addr_name_ptr(dev, name);
+}
+
 static inline fdt_addr_t dev_read_addr_size_name(const struct udevice *dev,
 						 const char *name,
 						 fdt_size_t *size)
@@ -987,6 +1021,13 @@ static inline fdt_addr_t dev_read_addr_size_name(const struct udevice *dev,
 	return devfdt_get_addr_size_name(dev, name, size);
 }
 
+static inline void *dev_read_addr_size_name_ptr(const struct udevice *dev,
+						const char *name,
+						fdt_size_t *size)
+{
+	return devfdt_get_addr_size_name_ptr(dev, name, size);
+}
+
 static inline fdt_addr_t dev_read_addr(const struct udevice *dev)
 {
 	return devfdt_get_addr(dev);