mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-21 22:47:56 +00:00
20ea6adbf1
Build system: x86_64 Build-tested: bcm2708, bcm2709, bcm2710, bcm2711 Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B Signed-off-by: Marty Jones <mj8263788@gmail.com> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
68 lines
2.1 KiB
Diff
68 lines
2.1 KiB
Diff
From 3f32e8b803061cf04a1fe31a3070e46fd0d379e8 Mon Sep 17 00:00:00 2001
|
|
From: Daniel Scally <djrscally@gmail.com>
|
|
Date: Wed, 2 Mar 2022 22:03:04 +0000
|
|
Subject: [PATCH] media: v4l2-async: Create links during
|
|
v4l2_async_match_notify()
|
|
|
|
Upon an async fwnode match, there's some typical behaviour that the
|
|
notifier and matching subdev will want to do. For example, a notifier
|
|
representing a sensor matching to an async subdev representing its
|
|
VCM will want to create an ancillary link to expose that relationship
|
|
to userspace.
|
|
|
|
To avoid lots of code in individual drivers, try to build these links
|
|
within v4l2 core.
|
|
|
|
Signed-off-by: Daniel Scally <djrscally@gmail.com>
|
|
---
|
|
drivers/media/v4l2-core/v4l2-async.c | 31 ++++++++++++++++++++++++++++
|
|
1 file changed, 31 insertions(+)
|
|
|
|
--- a/drivers/media/v4l2-core/v4l2-async.c
|
|
+++ b/drivers/media/v4l2-core/v4l2-async.c
|
|
@@ -275,6 +275,24 @@ v4l2_async_notifier_try_complete(struct
|
|
static int
|
|
v4l2_async_notifier_try_all_subdevs(struct v4l2_async_notifier *notifier);
|
|
|
|
+static int v4l2_async_create_ancillary_links(struct v4l2_async_notifier *n,
|
|
+ struct v4l2_subdev *sd)
|
|
+{
|
|
+ struct media_link *link = NULL;
|
|
+
|
|
+#if IS_ENABLED(CONFIG_MEDIA_CONTROLLER)
|
|
+
|
|
+ if (sd->entity.function != MEDIA_ENT_F_LENS &&
|
|
+ sd->entity.function != MEDIA_ENT_F_FLASH)
|
|
+ return 0;
|
|
+
|
|
+ link = media_create_ancillary_link(&n->sd->entity, &sd->entity);
|
|
+
|
|
+#endif
|
|
+
|
|
+ return IS_ERR(link) ? PTR_ERR(link) : 0;
|
|
+}
|
|
+
|
|
static int v4l2_async_match_notify(struct v4l2_async_notifier *notifier,
|
|
struct v4l2_device *v4l2_dev,
|
|
struct v4l2_subdev *sd,
|
|
@@ -292,6 +310,19 @@ static int v4l2_async_match_notify(struc
|
|
v4l2_device_unregister_subdev(sd);
|
|
return ret;
|
|
}
|
|
+
|
|
+ /*
|
|
+ * Depending of the function of the entities involved, we may want to
|
|
+ * create links between them (for example between a sensor and its lens
|
|
+ * or between a sensor's source pad and the connected device's sink
|
|
+ * pad).
|
|
+ */
|
|
+ ret = v4l2_async_create_ancillary_links(notifier, sd);
|
|
+ if (ret) {
|
|
+ v4l2_async_notifier_call_unbind(notifier, sd, asd);
|
|
+ v4l2_device_unregister_subdev(sd);
|
|
+ return ret;
|
|
+ }
|
|
|
|
/* Remove from the waiting list */
|
|
list_del(&asd->list);
|