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authorMauro Carvalho Chehab <mchehab@redhat.com>2011-11-11 12:46:23 -0200
committerMauro Carvalho Chehab <mchehab@redhat.com>2011-11-11 12:46:23 -0200
commit39ce61a846c8e1fa00cb57ad5af021542e6e8403 (patch)
treefc2ece73b3c54a805f9ac85d390f2388f741b46c /include/linux/dvb
parente9eb0dadba932940f721f9d27544a7818b2fa1c5 (diff)
[media] dvb: Allow select between DVB-C Annex A and Annex C
DVB-C, as defined by ITU-T J.83 has 3 annexes. The differences between Annex A and Annex C is that Annex C uses a subset of the modulation types, and uses a different rolloff factor. A different rolloff means that the bandwidth required is slicely different, and may affect the saw filter configuration at the tuners. Also, some demods have different configurations, depending on using Annex A or Annex C. So, allow userspace to specify it, by changing the rolloff factor. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include/linux/dvb')
-rw-r--r--include/linux/dvb/frontend.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/dvb/frontend.h b/include/linux/dvb/frontend.h
index 1b1094c35e4f..d9251df867b5 100644
--- a/include/linux/dvb/frontend.h
+++ b/include/linux/dvb/frontend.h
@@ -329,6 +329,8 @@ typedef enum fe_rolloff {
ROLLOFF_20,
ROLLOFF_25,
ROLLOFF_AUTO,
+ ROLLOFF_15, /* DVB-C Annex A */
+ ROLLOFF_13, /* DVB-C Annex C */
} fe_rolloff_t;
typedef enum fe_delivery_system {