@@ -215,6 +215,7 @@ typedef enum fe_status {
FE_HAS_LOCK = 0x10,
FE_TIMEDOUT = 0x20,
FE_REINIT = 0x40,
+ FE_HAS_PARAMETERS = 0x80,
} fe_status_t;
</programlisting>
<para>to indicate the current state and/or state changes of the frontend hardware:
@@ -243,7 +244,17 @@ typedef enum fe_status {
<entry align="char">FE_REINIT</entry>
<entry align="char">The frontend was reinitialized, application is
recommended to reset DiSEqC, tone and parameters</entry>
-</row>
+</row><row>
+<entry align="char">FE_HAS_PARAMETERS</entry>
+<entry align="char"><link linkend="FE_GET_SET_PROPERTY">
+<constant>FE_GET_PROPERTY/FE_SET_PROPERTY</constant></link> or
+<link linkend="FE_GET_FRONTEND"><constant>FE_GET_FRONTEND</constant></link> can now be
+called to provide the detected network parameters.
+This should be risen for example when the DVB-T TPS/ISDB-T TMCC is locked.
+This status can be risen before FE_HAS_SYNC, as the SNR required for
+parameters detection is lower than the requirement for the other
+carriers on the OFDM delivery systems.
+</entry></row>
</tbody></tgroup></informaltable>
</section>
@@ -131,6 +131,9 @@ typedef enum fe_sec_mini_cmd {
* @FE_TIMEDOUT: no lock within the last ~2 seconds
* @FE_REINIT: frontend was reinitialized, application is recommended
* to reset DiSEqC, tone and parameters
+ * @FE_HAS_PARAMETERS: get_frontend() can now be called to provide the
+ * detected network parameters. This should be risen
+ * for example when the DVB-T TPS/ISDB-T TMCC is locked.
*/
typedef enum fe_status {
@@ -141,6 +144,7 @@ typedef enum fe_status {
FE_HAS_LOCK = 0x10,
FE_TIMEDOUT = 0x20,
FE_REINIT = 0x40,
+ FE_HAS_PARAMETERS = 0x80,
} fe_status_t;
typedef enum fe_spectral_inversion {
get_frontend() can't be called too early, as the device may not have it yet. Yet, get_frontend() on OFDM standards can happen before FE_HAS_LOCK, as the TMCC carriers (ISDB-T) or the TPS carriers (DVB-T) require a very low signal to noise relation to be detected. The other carriers use different modulations, so they require a higher SNR. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> --- v2: rebase for patch at http://patchwork.linuxtv.org/patch/9562 --- Documentation/DocBook/media/dvb/frontend.xml | 13 ++++++++++++- include/linux/dvb/frontend.h | 4 ++++ 2 files changed, 16 insertions(+), 1 deletion(-)