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| author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-11-11 18:46:23 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-11-11 18:46:23 +0400 |
| commit | 39ce61a846c8e1fa00cb57ad5af021542e6e8403 (patch) | |
| tree | fc2ece73b3c54a805f9ac85d390f2388f741b46c /include/linux | |
| parent | e9eb0dadba932940f721f9d27544a7818b2fa1c5 (diff) | |
| download | linux-39ce61a846c8e1fa00cb57ad5af021542e6e8403.tar.xz | |
[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')
| -rw-r--r-- | include/linux/dvb/frontend.h | 2 |
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 { |