From 665faa971d087e8b968ef75d04079a7a462ddfca Mon Sep 17 00:00:00 2001
From: Sakari Ailus <sakari.ailus@linux.intel.com>
Date: Wed, 16 Dec 2015 11:32:17 -0200
Subject: [media] media: Introduce internal index for media entities
The internal index can be used internally by the framework in order to keep
track of entities for a purpose or another. The internal index is constant
while it's registered to a media device, but the same index may be re-used
once the entity having that index is unregistered.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
include/media/media-device.h | 4 ++++
include/media/media-entity.h | 3 +++
2 files changed, 7 insertions(+)
(limited to 'include')
diff --git a/include/media/media-device.h b/include/media/media-device.h
index e01bbc427fcd..2ab4e6803842 100644
--- a/include/media/media-device.h
+++ b/include/media/media-device.h
@@ -261,6 +261,7 @@
* in the end provide a way to use driver-specific callbacks.
*/
+struct ida;
struct device;
/**
@@ -278,6 +279,7 @@ struct device;
* @pad_id: Unique ID used on the last pad registered
* @link_id: Unique ID used on the last link registered
* @intf_devnode_id: Unique ID used on the last interface devnode registered
+ * @entity_internal_idx: Allocated internal entity indices
* @entities: List of registered entities
* @interfaces: List of registered interfaces
* @pads: List of registered pads
@@ -313,6 +315,8 @@ struct media_device {
u32 pad_id;
u32 link_id;
u32 intf_devnode_id;
+ struct ida entity_internal_idx;
+ int entity_internal_idx_max;
struct list_head entities;
struct list_head interfaces;
diff --git a/include/media/media-entity.h b/include/media/media-entity.h
index 81aca1f5a09a..30e8f9fd3efa 100644
--- a/include/media/media-entity.h
+++ b/include/media/media-entity.h
@@ -157,6 +157,8 @@ struct media_entity_operations {
* @num_pads: Number of sink and source pads.
* @num_links: Total number of links, forward and back, enabled and disabled.
* @num_backlinks: Number of backlinks
+ * @internal_idx: An unique internal entity specific number. The numbers are
+ * re-used if entities are unregistered or registered again.
* @pads: Pads array with the size defined by @num_pads.
* @links: List of data links.
* @ops: Entity operations.
@@ -183,6 +185,7 @@ struct media_entity {
u16 num_pads;
u16 num_links;
u16 num_backlinks;
+ int internal_idx;
struct media_pad *pads;
struct list_head links;
--
cgit