[PATCH 28/31] media: au0828 create link between ALSA Mixer and decoder

[Shuah Khan]

Change au0828_create_media_graph() to create pad link
between MEDIA_ENT_F_AUDIO_MIXER entity and decoder's
AU8522_PAD_AUDIO_OUT. With mixer entity now linked to
decoder, change to link MEDIA_ENT_F_AUDIO_CAPTURE to
mixer's source pad.

Signed-off-by: Shuah Khan <shua...@osg.samsung.com>
---
 drivers/media/usb/au0828/au0828-core.c | 17 ++++++++++++++---
 drivers/media/usb/au0828/au0828.h      |  1 +
 2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/drivers/media/usb/au0828/au0828-core.c 
b/drivers/media/usb/au0828/au0828-core.c
index 722e073..886fb28 100644
--- a/drivers/media/usb/au0828/au0828-core.c
+++ b/drivers/media/usb/au0828/au0828-core.c
@@ -264,6 +264,7 @@ static int au0828_create_media_graph(struct au0828_dev *dev)
        struct media_entity *entity;
        struct media_entity *tuner = NULL, *decoder = NULL;
        struct media_entity *audio_capture = NULL;
+       struct media_entity *mixer = NULL;
        int i, ret;
 
        if (!mdev)
@@ -284,6 +285,9 @@ static int au0828_create_media_graph(struct au0828_dev *dev)
                case MEDIA_ENT_F_AUDIO_CAPTURE:
                        audio_capture = entity;
                        break;
+               case MEDIA_ENT_F_AUDIO_MIXER:
+                       mixer = entity;
+                       break;
                }
        }
 
@@ -356,14 +360,21 @@ static int au0828_create_media_graph(struct au0828_dev 
*dev)
                        }
                }
        }
-       if (audio_capture && !dev->audio_capture_linked) {
-               ret = media_create_pad_link(decoder, AU8522_PAD_AUDIO_OUT,
-                                           audio_capture, 0,
+       if (mixer && audio_capture && !dev->audio_capture_linked) {
+               ret = media_create_pad_link(mixer, 1, audio_capture, 0,
                                            MEDIA_LNK_FL_ENABLED);
                if (ret)
                        return ret;
                dev->audio_capture_linked = 1;
        }
+       if (mixer && !dev->mixer_linked) {
+               ret = media_create_pad_link(decoder, AU8522_PAD_AUDIO_OUT,
+                                           mixer, 0,
+                                           MEDIA_LNK_FL_ENABLED);
+               if (ret)
+                       return ret;
+               dev->mixer_linked = 1;
+       }
 #endif
        return 0;
 }
diff --git a/drivers/media/usb/au0828/au0828.h 
b/drivers/media/usb/au0828/au0828.h
index 3707664..b9aa74f 100644
--- a/drivers/media/usb/au0828/au0828.h
+++ b/drivers/media/usb/au0828/au0828.h
@@ -289,6 +289,7 @@ struct au0828_dev {
        bool vdev_linked;
        bool vbi_linked;
        bool audio_capture_linked;
+       bool mixer_linked;
        struct media_link *active_link;
        struct media_entity *active_link_owner;
 #endif
-- 
2.5.0

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