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iosys-map: Add IOSYS_MAP_INIT_VADDR_IOMEM() 

Add IOSYS_MAP_INIT_VADDR_IOMEM() for static init of variables of type
struct iosys_map.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220808125406.20752-2-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2022-08-08 14:53:53 +02:00
parent 730c2bf4ad
commit 116d902fa9
1 changed files with 14 additions and 1 deletions
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15
include/linux/iosys-map.h
View File

@ -46,10 +46,13 @@
*
* iosys_map_set_vaddr(&map, 0xdeadbeaf);
*
* To set an address in I/O memory, use iosys_map_set_vaddr_iomem().
* To set an address in I/O memory, use IOSYS_MAP_INIT_VADDR_IOMEM() or
* iosys_map_set_vaddr_iomem().
*
* .. code-block:: c
*
* struct iosys_map map = IOSYS_MAP_INIT_VADDR_IOMEM(0xdeadbeaf);
*
* iosys_map_set_vaddr_iomem(&map, 0xdeadbeaf);
*
* Instances of struct iosys_map do not have to be cleaned up, but
@ -121,6 +124,16 @@ struct iosys_map {
.is_iomem = false, \
}
/**
* IOSYS_MAP_INIT_VADDR_IOMEM - Initializes struct iosys_map to an address in I/O memory
* @vaddr_iomem_: An I/O-memory address
*/
#define IOSYS_MAP_INIT_VADDR_IOMEM(vaddr_iomem_) \
{ \
.vaddr_iomem = (vaddr_iomem_), \
.is_iomem = true, \
}
/**
* IOSYS_MAP_INIT_OFFSET - Initializes struct iosys_map from another iosys_map
* @map_: The dma-buf mapping structure to copy from