core: read: add dev_read_addr_size_index_ptr function
Add dev_read_addr_size_index_ptr function with the same functionality as
dev_read_addr_size_index, but instead a return pointer is given.
Use map_sysmem() function as cast for the return.
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/drivers/core/read.c b/drivers/core/read.c
index 5749473..49066b5 100644
--- a/drivers/core/read.c
+++ b/drivers/core/read.c
@@ -150,6 +150,17 @@
return devfdt_get_addr_size_index(dev, index, size);
}
+void *dev_read_addr_size_index_ptr(const struct udevice *dev, int index,
+ fdt_size_t *size)
+{
+ fdt_addr_t addr = dev_read_addr_size_index(dev, index, size);
+
+ if (addr == FDT_ADDR_T_NONE)
+ return NULL;
+
+ return map_sysmem(addr, 0);
+}
+
void *dev_remap_addr_index(const struct udevice *dev, int index)
{
fdt_addr_t addr = dev_read_addr_index(dev, index);
diff --git a/include/dm/read.h b/include/dm/read.h
index 137f2a5..c2615f7 100644
--- a/include/dm/read.h
+++ b/include/dm/read.h
@@ -247,6 +247,20 @@
fdt_size_t *size);
/**
+ * dev_read_addr_size_index_ptr() - Get the indexed reg property of a device
+ * as a pointer
+ *
+ * @dev: Device to read from
+ * @index: the 'reg' property can hold a list of <addr, size> pairs
+ * and @index is used to select which one is required
+ * @size: place to put size value (on success)
+ *
+ * Return: pointer or NULL if not found
+ */
+void *dev_read_addr_size_index_ptr(const struct udevice *dev, int index,
+ fdt_size_t *size);
+
+/**
* dev_remap_addr_index() - Get the indexed reg property of a device
* as a memory-mapped I/O pointer
*
@@ -952,6 +966,13 @@
return devfdt_get_addr_size_index(dev, index, size);
}
+static inline void *dev_read_addr_size_index_ptr(const struct udevice *dev,
+ int index,
+ fdt_size_t *size)
+{
+ return devfdt_get_addr_size_index_ptr(dev, index, size);
+}
+
static inline fdt_addr_t dev_read_addr_name(const struct udevice *dev,
const char *name)
{