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authorMauro Carvalho Chehab <mchehab@infradead.org>2008-01-05 09:59:03 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2008-01-25 19:04:32 -0200
commitd7448a8d9d06ca2ca4fd1f17404450ecba8bea3a (patch)
tree61be9e95bdf31c4cde511c67ce2f526bb816d0f8 /drivers/media/video/em28xx/em28xx.h
parent6d79468dd8537530f4150e76ed9b4b63f80571c6 (diff)
V4L/DVB (6952): Add code for autoloading em28xx-alsa, if needed
Older em28xx devices does implement standard Audio Class. However, on newer devices, this were replaced by a Vendor Class. This patch autodetects that an em28xx lacks Audio Class and auto-loads em28xx-alsa, for the devices that implements only a Vendor Class. For devices with Audio Class, snd-usb-audio module will provide an ALSA interface. This patch uses the request_module_async function as defined on cx88-mpeg.c, originally wrote by Markus Rechberger. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/video/em28xx/em28xx.h')
-rw-r--r--drivers/media/video/em28xx/em28xx.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/media/video/em28xx/em28xx.h b/drivers/media/video/em28xx/em28xx.h
index c2d9ae0ac618..9eb213132da1 100644
--- a/drivers/media/video/em28xx/em28xx.h
+++ b/drivers/media/video/em28xx/em28xx.h
@@ -246,6 +246,7 @@ struct em28xx {
unsigned int has_msp34xx:1;
unsigned int has_tda9887:1;
unsigned int stream_on:1; /* Locks streams */
+ unsigned int has_audio_class:1;
int video_inputs; /* number of video inputs */
struct list_head devlist;
@@ -295,6 +296,8 @@ struct em28xx {
enum em28xx_stream_state stream;
enum em28xx_io_method io;
+ struct work_struct request_module_wk;
+
/* locks */
struct mutex lock;
spinlock_t queue_lock;