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dm: core: Add dev_get_addr_size_index() to retrieve addr and size

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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 <sr@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Acked-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Stefan Roese 2016-11-30 07:24:47 +01:00 committed by Simon Glass
parent 63c0941726
commit 13f3fcac53
2 changed files with 38 additions and 0 deletions
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22
drivers/core/device.c
View File

@ -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)

16
include/dm/device.h
View File

@ -496,6 +496,22 @@ 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
*