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dm: core: add dev_read_addr_ptr()

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The dev_read_addr_ptr() mimics the behaviour of the devfdt_get_addr_ptr(),
retrieving the first address of the node's reg-property and returning
it as a pointer (or NULL on failure).

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Philipp Tomsich 2017-09-11 22:04:12 +02:00
parent af82315164
commit c131c8bca8
2 changed files with 22 additions and 0 deletions
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7
drivers/core/read.c
View file

@ -57,6 +57,13 @@ fdt_addr_t dev_read_addr(struct udevice *dev)
return dev_read_addr_index(dev, 0);
}
void *dev_read_addr_ptr(struct udevice *dev)
{
fdt_addr_t addr = dev_read_addr(dev);
return (addr == FDT_ADDR_T_NONE) ? NULL : (void *)addr;
}
fdt_addr_t dev_read_addr_size(struct udevice *dev, const char *property,
fdt_size_t *sizep)
{

15
include/dm/read.h
View file

@ -112,6 +112,16 @@ fdt_addr_t dev_read_addr_index(struct udevice *dev, int index);
*/
fdt_addr_t dev_read_addr(struct udevice *dev);
/**
* dev_read_addr_ptr() - Get the reg property of a device
* as a pointer
*
* @dev: Device to read from
*
* @return pointer or NULL if not found
*/
void *dev_read_addr_ptr(struct udevice *dev);
/**
* dev_read_addr_size() - get address and size from a device property
*
@ -417,6 +427,11 @@ static inline fdt_addr_t dev_read_addr(struct udevice *dev)
return devfdt_get_addr(dev);
}
static inline void *dev_read_addr_ptr(struct udevice *dev)
{
return devfdt_get_addr_ptr(dev);
}
static inline fdt_addr_t dev_read_addr_size(struct udevice *dev,
const char *propname,
fdt_size_t *sizep)