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[02/16,media] Document the obscure dvb_frontend_reinitialise()

Message ID 660472ba238e2b758745515892fd04d1d5e128a5.1447668702.git.mchehab@osg.samsung.com (mailing list archive)
State New, archived
Headers show

Commit Message

Mauro Carvalho Chehab Nov. 16, 2015, 10:20 a.m. UTC 
The dvb_frontend_reinitialise() function is a special case
used by just one frontend. Document it, for completeness.

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
---
 drivers/media/dvb-core/dvb_frontend.h | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/media/dvb-core/dvb_frontend.h b/drivers/media/dvb-core/dvb_frontend.h
index 9f724f4571f3..c068bce274e4 100644
--- a/drivers/media/dvb-core/dvb_frontend.h
+++ b/drivers/media/dvb-core/dvb_frontend.h
@@ -694,11 +694,24 @@  extern int dvb_unregister_frontend(struct dvb_frontend *fe);
 
 extern void dvb_frontend_detach(struct dvb_frontend *fe);
 
-extern void dvb_frontend_reinitialise(struct dvb_frontend *fe);
 extern int dvb_frontend_suspend(struct dvb_frontend *fe);
 extern int dvb_frontend_resume(struct dvb_frontend *fe);
 
 /**
+ * dvb_frontend_reinitialise() - forces a reinitialisation at the frontend
+ *
+ * @fe: pointer to the frontend struct
+ *
+ * Calls &dvb_frontend_ops.init() and &dvb_frontend_ops.tuner_ops.init(),
+ * and resets SEC tone and voltage (for Satellite systems).
+ *
+ * NOTE: Currently, this function is used only by one driver (budget-av).
+ * It seems to be due to address some special issue with that specific
+ * frontend.
+ */
+void dvb_frontend_reinitialise(struct dvb_frontend *fe);
+
+/**
  * dvb_frontend_sleep_until() - Sleep for the amount of time given by
  *                      add_usec parameter
  *