This API helps to map physical register addresss pace of device to virtual address space easily. Its just a wrapper around map_physmem() with MAP_NOCACHE flag.
Signed-off-by: Vignesh R vigneshr@ti.com Suggested-by: Simon Glass sjg@chromium.org ---
v2: New patch
drivers/core/device.c | 5 +++++ include/dm/device.h | 10 ++++++++++ 2 files changed, 15 insertions(+)
diff --git a/drivers/core/device.c b/drivers/core/device.c index 269087a084cf..61af70efcef7 100644 --- a/drivers/core/device.c +++ b/drivers/core/device.c @@ -673,6 +673,11 @@ fdt_addr_t dev_get_addr(struct udevice *dev) return dev_get_addr_index(dev, 0); }
+void *dev_map_physmem(struct udevice *dev, unsigned long size) +{ + return map_physmem(dev_get_addr(dev), size, MAP_NOCACHE); +} + bool device_has_children(struct udevice *dev) { return !list_empty(&dev->child_head); diff --git a/include/dm/device.h b/include/dm/device.h index dad7591dfacb..0d3e3ed34870 100644 --- a/include/dm/device.h +++ b/include/dm/device.h @@ -454,6 +454,16 @@ int device_find_next_child(struct udevice **devp); fdt_addr_t dev_get_addr(struct udevice *dev);
/** + * dev_map_physmem() - Map bus memory into CPU space + * + * @dev: Pointer to device + * @size: size of the memory to map + * + * @return addr + */ +void *dev_map_physmem(struct udevice *dev, unsigned long size); + +/** * dev_get_addr_index() - Get the indexed reg property of a device * * @dev: Pointer to a device