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[media] media: au0828 audio mixer isn't connected to decoder

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When snd_usb_audio gets probed first, audio mixer doesn't get linked to
the decoder.

Change au0828_media_graph_notify() to handle the mixer entity getting
registered before the decoder.

Change au0828_media_device_register() to invoke
au0828_media_graph_notify() to connect entites that were created prior
to registering the notify handler.

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Reported-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Shuah Khan 2016-03-03 00:38:19 -03:00 committed by Mauro Carvalho Chehab
parent aebb2b89bf
commit 9096cae181
1 changed files with 46 additions and 10 deletions
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56
drivers/media/usb/au0828/au0828-core.c
View file

@ -211,24 +211,51 @@ static void au0828_media_graph_notify(struct media_entity *new,
#ifdef CONFIG_MEDIA_CONTROLLER
struct au0828_dev *dev = (struct au0828_dev *) notify_data;
int ret;
struct media_entity *entity, *mixer = NULL, *decoder = NULL;
if (!dev->decoder)
return;
if (!new) {
/*
* Called during au0828 probe time to connect
* entites that were created prior to registering
* the notify handler. Find mixer and decoder.
*/
media_device_for_each_entity(entity, dev->media_dev) {
if (entity->function == MEDIA_ENT_F_AUDIO_MIXER)
mixer = entity;
else if (entity->function == MEDIA_ENT_F_ATV_DECODER)
decoder = entity;
}
goto create_link;
}
switch (new->function) {
case MEDIA_ENT_F_AUDIO_MIXER:
ret = media_create_pad_link(dev->decoder,
DEMOD_PAD_AUDIO_OUT,
new, 0,
MEDIA_LNK_FL_ENABLED);
if (ret)
dev_err(&dev->usbdev->dev,
"Mixer Pad Link Create Error: %d\n",
ret);
mixer = new;
if (dev->decoder)
decoder = dev->decoder;
break;
case MEDIA_ENT_F_ATV_DECODER:
/* In case, Mixer is added first, find mixer and create link */
media_device_for_each_entity(entity, dev->media_dev) {
if (entity->function == MEDIA_ENT_F_AUDIO_MIXER)
mixer = entity;
}
decoder = new;
break;
default:
break;
}
create_link:
if (decoder && mixer) {
ret = media_create_pad_link(decoder,
DEMOD_PAD_AUDIO_OUT,
mixer, 0,
MEDIA_LNK_FL_ENABLED);
if (ret)
dev_err(&dev->usbdev->dev,
"Mixer Pad Link Create Error: %d\n", ret);
}
#endif
}
@ -447,6 +474,15 @@ static int au0828_media_device_register(struct au0828_dev *dev,
"Media Device Register Error: %d\n", ret);
return ret;
}
} else {
/*
* Call au0828_media_graph_notify() to connect
* audio graph to our graph. In this case, audio
* driver registered the device and there is no
* entity_notify to be called when new entities
* are added. Invoke it now.
*/
au0828_media_graph_notify(NULL, (void *) dev);
}
/* register entity_notify callback */
dev->entity_notify.notify_data = (void *) dev;