Hi,
On 5 July 2016 at 22:28, Vignesh R vigneshr@ti.com wrote:
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.
nit: dev_map_physmem() in the subject
Signed-off-by: Vignesh R vigneshr@ti.com Suggested-by: Simon Glass sjg@chromium.org Reviewed-by: Jagan Teki jteki@openedev.com Reviewed-by: Simon Glass sjg@chromium.org
drivers/core/device.c | 11 +++++++++++ include/dm/device.h | 13 +++++++++++++ 2 files changed, 24 insertions(+)
diff --git a/drivers/core/device.c b/drivers/core/device.c index eb75b1734f9b..f7fb0cc0fa7c 100644 --- a/drivers/core/device.c +++ b/drivers/core/device.c @@ -10,6 +10,7 @@ */
#include <common.h> +#include <asm/io.h> #include <fdtdec.h> #include <fdt_support.h> #include <malloc.h> @@ -697,6 +698,16 @@ void *dev_get_addr_ptr(struct udevice *dev) return (void *)(uintptr_t)dev_get_addr_index(dev, 0); }
+void *dev_map_physmem(struct udevice *dev, unsigned long size) +{
fdt_addr_t addr = dev_get_addr(dev);if (addr == FDT_ADDR_T_NONE)return NULL;return map_physmem(addr, 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 f03bcd3b49ee..1bfcf3bcbc01 100644 --- a/include/dm/device.h +++ b/include/dm/device.h @@ -467,6 +467,19 @@ fdt_addr_t dev_get_addr(struct udevice *dev); void *dev_get_addr_ptr(struct udevice *dev);
/**
- dev_map_physmem() - Read device address from reg property of the
device node and map the address into CPU address
space.
- @dev: Pointer to device
- @size: size of the memory to map
- @return mapped address, or NULL if the device does not have reg
property.- */
+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
-- 2.9.0