On Mon, Aug 08, 2022 at 02:53:53PM +0200, Thomas Zimmermann wrote:
> Add IOSYS_MAP_INIT_VADDR_IOMEM() for static init of variables of type
> struct iosys_map.
>
> Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
Reviewed-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
> ---
> include/linux/iosys-map.h | 15 ++++++++++++++-
> 1 file changed, 14 insertions(+), 1 deletion(-)
>
> diff --git a/include/linux/iosys-map.h b/include/linux/iosys-map.h
> index a533cae189d7..cb71aa616bd3 100644
> --- a/include/linux/iosys-map.h
> +++ b/include/linux/iosys-map.h
> @@ -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
> --
> 2.37.1
