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dm: Rename device_get_by_driver_info_idx()

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This function finds a device by its driver_info index. With
of-platdata-inst we do not use driver_info, but instead instantiate
udevice records at build-time.

However the semantics of using the function are the same in each case:
the caller provides an index and gets back a device.

So rename the function to device_get_by_ofplat_idx(), so that it can be
used for both situations. The caller does not really need to worry about
the details.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2021-03-15 17:25:28 +13:00
parent e62ad9c867
commit cc469b7086
6 changed files with 31 additions and 20 deletions
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16
include/dm/device.h
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@@ -667,18 +667,24 @@ int device_find_global_by_ofnode(ofnode node, struct udevice **devp);
int device_get_global_by_ofnode(ofnode node, struct udevice **devp);
/**
* device_get_by_driver_info_idx() - Get a device based on driver_info index
* device_get_by_ofplat_idx() - Get a device based on of-platdata index
*
* Locates a device by its struct driver_info, by using its index number which
* is written into the idx field of struct phandle_1_arg, etc.
* Locates a device by either its struct driver_info index, or its
* struct udevice index. The latter is used with OF_PLATDATA_INST, since we have
* a list of build-time instantiated struct udevice records, The former is used
* with !OF_PLATDATA_INST since in that case we have a list of
* struct driver_info records.
*
* The index number is written into the idx field of struct phandle_1_arg, etc.
* It is the position of this driver_info/udevice in its linker list.
*
* The device is probed to activate it ready for use.
*
* @idx: Index number of the driver_info structure (0=first)
* @idx: Index number of the driver_info/udevice structure (0=first)
* @devp: Returns pointer to device if found, otherwise this is set to NULL
* @return 0 if OK, -ve on error
*/
int device_get_by_driver_info_idx(uint idx, struct udevice **devp);
int device_get_by_ofplat_idx(uint idx, struct udevice **devp);
/**
* device_find_first_child() - Find the first child of a device