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media: add 'index' to struct media_v2_pad 

The v2 pad structure never exposed the pad index, which made it impossible
to call the MEDIA_IOC_SETUP_LINK ioctl, which needs that information.

It is really trivial to just expose this information, so implement this.

Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Hans Verkuil 2018-02-27 07:24:09 -05:00 committed by Mauro Carvalho Chehab
parent 76e464888b
commit 30b914c8d8
2 changed files with 12 additions and 1 deletions
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1
drivers/media/media-device.c
View File

@ -331,6 +331,7 @@ static long media_device_get_topology(struct media_device *mdev, void *arg)
kpad.id = pad->graph_obj.id;
kpad.entity_id = pad->entity->graph_obj.id;
kpad.flags = pad->flags;
kpad.index = pad->index;
if (copy_to_user(upad, &kpad, sizeof(kpad)))
ret = -EFAULT;

12
include/uapi/linux/media.h
View File

@ -305,11 +305,21 @@ struct media_v2_interface {
};
} __attribute__ ((packed));
/*
* Appeared in 4.19.0.
*
* The media_version argument comes from the media_version field in
* struct media_device_info.
*/
#define MEDIA_V2_PAD_HAS_INDEX(media_version) \
((media_version) >= ((4 << 16) | (19 << 8) | 0))
struct media_v2_pad {
__u32 id;
__u32 entity_id;
__u32 flags;
__u32 reserved[5];
__u32 index;
__u32 reserved[4];
} __attribute__ ((packed));
struct media_v2_link {