V4L/DVB: cx18: overhaul ALSA PCM device handling so it works

Add code so that the PCM ALSA device actually works, and update the
cx18-streams mechanism so that it passes the data off to the cx18-alsa module.

This work was sponsored by ONELAN Limited.

Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/media/video/cx18/cx18-driver.h b/drivers/media/video/cx18/cx18-driver.h
index fcb99531dab3..22634cf6a96a 100644
--- a/drivers/media/video/cx18/cx18-driver.h
+++ b/drivers/media/video/cx18/cx18-driver.h
@@ -575,6 +575,9 @@ struct cx18 {
         int stream_buf_size[CX18_MAX_STREAMS]; /* Stream buffer size */
         struct cx18_stream streams[CX18_MAX_STREAMS];   /* Stream data */
         struct snd_cx18_card *alsa; /* ALSA interface for PCM capture stream */
+        void (*pcm_announce_callback)(struct snd_cx18_card *card, u8 *pcm_data,
+                                      size_t num_bytes);
+
         unsigned long i_flags;  /* global cx18 flags */
         atomic_t ana_capturing; /* count number of active analog capture streams */
         atomic_t tot_capturing; /* total count number of active capture streams */