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Subject: [media] media: rc: ir-sharp-decoder: add support for Denon variant of 
the protocol
Author:  Heiner Kallweit <[email protected]>
Date:    Thu Oct 29 17:28:08 2015 -0200

Denon also uses the Sharp protocol, however with different check bits.

It would have been also possible to add this as a separate protocol
but this may not be worth the effort.

Successfully tested with a Denon RC-1002 remote control.

Signed-off-by: Heiner Kallweit <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

 drivers/media/rc/Kconfig            |    3 ++-
 drivers/media/rc/ir-sharp-decoder.c |    4 +++-
 2 files changed, 5 insertions(+), 2 deletions(-)

---

http://git.linuxtv.org/cgit.cgi/media_tree.git/commit/?id=1b0621af505006c535edab36e7cc154534cabebd

diff --git a/drivers/media/rc/Kconfig b/drivers/media/rc/Kconfig
index b6e1311..bd4d685 100644
--- a/drivers/media/rc/Kconfig
+++ b/drivers/media/rc/Kconfig
@@ -101,7 +101,8 @@ config IR_SHARP_DECODER
 
        ---help---
           Enable this option if you have an infrared remote control which
-          uses the Sharp protocol, and you need software decoding support.
+          uses the Sharp protocol (Sharp, Denon), and you need software
+          decoding support.
 
 config IR_MCE_KBD_DECODER
        tristate "Enable IR raw decoder for the MCE keyboard/mouse protocol"
diff --git a/drivers/media/rc/ir-sharp-decoder.c 
b/drivers/media/rc/ir-sharp-decoder.c
index b7acdba..1f33164 100644
--- a/drivers/media/rc/ir-sharp-decoder.c
+++ b/drivers/media/rc/ir-sharp-decoder.c
@@ -118,7 +118,9 @@ static int ir_sharp_decode(struct rc_dev *dev, struct 
ir_raw_event ev)
 
                if (data->count == SHARP_NBITS) {
                        /* exp,chk bits should be 1,0 */
-                       if ((data->bits & 0x3) != 0x2)
+                       if ((data->bits & 0x3) != 0x2 &&
+                       /* DENON variant, both chk bits 0 */
+                           (data->bits & 0x3) != 0x0)
                                break;
                        data->state = STATE_ECHO_SPACE;
                } else {

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