diff options
| author | Simon Glass <sjg@chromium.org> | 2015-07-07 20:53:44 -0600 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2015-08-06 07:44:28 -0600 |
| commit | f33017716e5c430d84366ecc4476ba2b655f3fef (patch) | |
| tree | 6ac94703ce7c4374c81a35176ac541f97d91efb0 /include/dm/device-internal.h | |
| parent | 0990fcb772192af615f23cd78bbfc081ec40236b (diff) | |
dm: Support address translation for simple-bus
The 'ranges' property can be used to specify a translation from the system
address to the bus address. Add support for this using the dev_get_addr()
function, which devices should use to find their address.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include/dm/device-internal.h')
| -rw-r--r-- | include/dm/device-internal.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/dm/device-internal.h b/include/dm/device-internal.h index 402304f19e..1a9ba01b3b 100644 --- a/include/dm/device-internal.h +++ b/include/dm/device-internal.h @@ -139,6 +139,18 @@ void device_free(struct udevice *dev); static inline void device_free(struct udevice *dev) {} #endif +/** + * simple_bus_translate() - translate a bus address to a system address + * + * This handles the 'ranges' property in a simple bus. It translates the + * device address @addr to a system address using this property. + * + * @dev: Simple bus device (parent of target device) + * @addr: Address to translate + * @return new address + */ +fdt_addr_t simple_bus_translate(struct udevice *dev, fdt_addr_t addr); + /* Cast away any volatile pointer */ #define DM_ROOT_NON_CONST (((gd_t *)gd)->dm_root) #define DM_UCLASS_ROOT_NON_CONST (((gd_t *)gd)->uclass_root) |