[media] media: rc: add raw decoder for Sharp protocol

Add a raw decoder for the Sharp protocol. It uses a pulse distance
modulation with a pulse of 320us and a bit period of 2ms for a logical 1
and 1ms for a logical 0. The first part of the message consists of a
5-bit address, an 8-bit command, and two other bits, followed by a 40ms
gap before the echo message which is an inverted version of the main
message except for the address bits.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Mauro Carvalho Chehab <m.chehab@samsung.com>
Cc: linux-media@vger.kernel.org
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/media/rc/rc-core-priv.h b/drivers/media/rc/rc-core-priv.h
index 70a180bb0bd0..c40d6660acac 100644
--- a/drivers/media/rc/rc-core-priv.h
+++ b/drivers/media/rc/rc-core-priv.h
@@ -88,6 +88,12 @@ struct ir_raw_event_ctrl {
 		unsigned count;
 		u64 bits;
 	} sanyo;
+	struct sharp_dec {
+		int state;
+		unsigned count;
+		u32 bits;
+		unsigned int pulse_len;
+	} sharp;
 	struct mce_kbd_dec {
 		struct input_dev *idev;
 		struct timer_list rx_timeout;