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[media] media: make media_link more generic to handle interace links 

By adding an union at media_link, we get for free a way to
represent interface->entity links.

No need to change anything at the code, just at the internal
header file.

Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
steinar/wifi_calib_4_9_kernel
Mauro Carvalho Chehab 2015-08-20 09:10:07 -03:00
parent 23615de5ee
commit 4b8a3c0859
1 changed files with 11 additions and 5 deletions
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16
include/media/media-entity.h
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@ -75,14 +75,20 @@ struct media_pipeline {
struct media_link {
struct media_gobj graph_obj;
struct list_head list;
struct media_pad *source; /* Source pad */
struct media_pad *sink; /* Sink pad */
union {
struct media_gobj *gobj0;
struct media_pad *source;
};
union {
struct media_gobj *gobj1;
struct media_pad *sink;
};
struct media_link *reverse; /* Link in the reverse direction */
unsigned long flags; /* Link flags (MEDIA_LNK_FL_*) */
};
struct media_pad {
struct media_gobj graph_obj;
struct media_gobj graph_obj; /* must be first field in struct */
struct media_entity *entity; /* Entity this pad belongs to */
u16 index; /* Pad index in the entity pads array */
unsigned long flags; /* Pad flags (MEDIA_PAD_FL_*) */
@ -105,7 +111,7 @@ struct media_entity_operations {
};
struct media_entity {
struct media_gobj graph_obj;
struct media_gobj graph_obj; /* must be first field in struct */
struct list_head list;
const char *name; /* Entity name */
u32 type; /* Entity type (MEDIA_ENT_T_*) */
@ -119,7 +125,7 @@ struct media_entity {
u16 num_backlinks; /* Number of backlinks */
struct media_pad *pads; /* Pads array (num_pads objects) */
struct list_head links; /* Links list */
struct list_head links; /* Pad-to-pad links list */
const struct media_entity_operations *ops; /* Entity operations */