V4L/DVB: ir-core: Add logic to decode IR protocols at the IR core

Adds a method to pass IR raw pulse/code events into ir-core. This is
needed in order to support LIRC. It also helps to move common code
from the drivers into the core.

In order to allow testing, it implements a simple NEC protocol decoder
at ir-nec-decoder.c file. The logic is about the same used at saa7134
driver that handles Avermedia M135A and Encore FM53 boards.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/media/ir-common.h b/include/media/ir-common.h
index 41469b79ad11..87f2ec78deb8 100644
--- a/include/media/ir-common.h
+++ b/include/media/ir-common.h
@@ -82,6 +82,9 @@ struct card_ir {
         /* NEC decoding */
         u32                     nec_gpio;
         struct tasklet_struct   tlet;
+
+        /* IR core raw decoding */
+        u32                     raw_decode;
 };
 
 /* Routines from ir-functions.c */