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-rw-r--r--Documentation/media/kapi/dtv-core.rst12
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/media/kapi/dtv-core.rst b/Documentation/media/kapi/dtv-core.rst
index de9a228aca8a..4cf9cf63bafd 100644
--- a/Documentation/media/kapi/dtv-core.rst
+++ b/Documentation/media/kapi/dtv-core.rst
@@ -29,8 +29,20 @@ I2C bus.
Digital TV Common functions
---------------------------
+Math functions
+~~~~~~~~~~~~~~
+
+Provide some commonly-used math functions, usually required in order to
+estimate signal strength and signal to noise measurements in dB.
+
.. kernel-doc:: drivers/media/dvb-core/dvb_math.h
+
+DVB devices
+~~~~~~~~~~~
+
+Those functions are responsible for handling the DVB device nodes.
+
.. kernel-doc:: drivers/media/dvb-core/dvbdev.h
Digital TV Ring buffer