The currently available functions accessing the 'reg' property of a
device only retrieve the address. Sometimes its also necessary to
retrieve the size described by the 'reg' property. This patch adds
the new function dev_get_addr_size_index() which retrieves both,
the address and the size described by the 'reg' property.
Signed-off-by: Stefan Roese <s...@denx.de>
Cc: Simon Glass <s...@chromium.org>
---
v2:
- Account 'index' in fdtdec_get_addr_size_auto_noparent() as
spotted by Simon
drivers/core/device.c | 22 ++++++++++++++++++++++
include/dm/device.h | 16 ++++++++++++++++
2 files changed, 38 insertions(+)
diff --git a/drivers/core/device.c b/drivers/core/device.c
index dcf5d9df7d..ed553d70a6 100644
--- a/drivers/core/device.c
+++ b/drivers/core/device.c
@@ -693,6 +693,28 @@ fdt_addr_t dev_get_addr_index(struct udevice *dev, int
index)
#endif
}
+fdt_addr_t dev_get_addr_size_index(struct udevice *dev, int index,
+ fdt_size_t *size)
+{
+#if CONFIG_IS_ENABLED(OF_CONTROL)
+ /*
+ * Only get the size in this first call. We'll get the addr in the
+ * next call to the exisiting dev_get_xxx function which handles
+ * all config options.
+ */
+ fdtdec_get_addr_size_auto_noparent(gd->fdt_blob, dev->of_offset,
+ "reg", index, size, false);
+
+ /*
+ * Get the base address via the existing function which handles
+ * all Kconfig cases
+ */
+ return dev_get_addr_index(dev, index);
+#else
+ return FDT_ADDR_T_NONE;
+#endif
+}
+
fdt_addr_t dev_get_addr_name(struct udevice *dev, const char *name)
{
#if CONFIG_IS_ENABLED(OF_CONTROL)
diff --git a/include/dm/device.h b/include/dm/device.h
index babf8ac8f0..9948bd49fa 100644
--- a/include/dm/device.h
+++ b/include/dm/device.h
@@ -497,6 +497,22 @@ void *dev_map_physmem(struct udevice *dev, unsigned long
size);
fdt_addr_t dev_get_addr_index(struct udevice *dev, int index);
/**
+ * dev_get_addr_size_index() - Get the indexed reg property of a device
+ *
+ * Returns the address and size specified in the 'reg' property of a device.
+ *
+ * @dev: Pointer to a device
+ * @index: the 'reg' property can hold a list of <addr, size> pairs
+ * and @index is used to select which one is required
+ * @size: Pointer to size varible - this function returns the size
+ * specified in the 'reg' property here
+ *
+ * @return addr
+ */
+fdt_addr_t dev_get_addr_size_index(struct udevice *dev, int index,
+ fdt_size_t *size);
+
+/**
* dev_get_addr_name() - Get the reg property of a device, indexed by name
*
* @dev: Pointer to a device
--
2.11.0
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