[media] rc: ir-sanyo-decoder: Add encode capability

Add the capability to encode Sanyo scancodes as raw events.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

diff --git a/drivers/media/rc/ir-sanyo-decoder.c b/drivers/media/rc/ir-sanyo-decoder.c
index b07d9caebeb1d5c8c515e61f6163686eea54c46c..520bb77dcb62b31ba2915fc4b673365d69113c70 100644 (file)
--- a/drivers/media/rc/ir-sanyo-decoder.c
+++ b/drivers/media/rc/ir-sanyo-decoder.c
@@ -176,9 +176,52 @@ static int ir_sanyo_decode(struct rc_dev *dev, struct ir_raw_event ev)
        return -EINVAL;
 }
 
+static const struct ir_raw_timings_pd ir_sanyo_timings = {
+       .header_pulse  = SANYO_HEADER_PULSE,
+       .header_space  = SANYO_HEADER_SPACE,
+       .bit_pulse     = SANYO_BIT_PULSE,
+       .bit_space[0]  = SANYO_BIT_0_SPACE,
+       .bit_space[1]  = SANYO_BIT_1_SPACE,
+       .trailer_pulse = SANYO_TRAILER_PULSE,
+       .trailer_space = SANYO_TRAILER_SPACE,
+       .msb_first     = 1,
+};
+
+/**
+ * ir_sanyo_encode() - Encode a scancode as a stream of raw events
+ *
+ * @protocol:  protocol to encode
+ * @scancode:  scancode to encode
+ * @events:    array of raw ir events to write into
+ * @max:       maximum size of @events
+ *
+ * Returns:    The number of events written.
+ *             -ENOBUFS if there isn't enough space in the array to fit the
+ *             encoding. In this case all @max events will have been written.
+ */
+static int ir_sanyo_encode(enum rc_type protocol, u32 scancode,
+                          struct ir_raw_event *events, unsigned int max)
+{
+       struct ir_raw_event *e = events;
+       int ret;
+       u64 raw;
+
+       raw = ((u64)(bitrev16(scancode >> 8) & 0xfff8) << (8 + 8 + 13 - 3)) |
+             ((u64)(bitrev16(~scancode >> 8) & 0xfff8) << (8 + 8 +  0 - 3)) |
+             ((bitrev8(scancode) & 0xff) << 8) |
+             (bitrev8(~scancode) & 0xff);
+
+       ret = ir_raw_gen_pd(&e, max, &ir_sanyo_timings, SANYO_NBITS, raw);
+       if (ret < 0)
+               return ret;
+
+       return e - events;
+}
+
 static struct ir_raw_handler sanyo_handler = {
        .protocols      = RC_BIT_SANYO,
        .decode         = ir_sanyo_decode,
+       .encode         = ir_sanyo_encode,
 };
 
 static int __init ir_sanyo_decode_init(void)