Add the capability to encode Sharp scancodes as raw events.
Signed-off-by: Sean Young <sean@xxxxxxxx>
---
drivers/media/rc/ir-sharp-decoder.c | 50 +++++++++++++++++++++++++++++++++++++
1 file changed, 50 insertions(+)
diff --git a/drivers/media/rc/ir-sharp-decoder.c b/drivers/media/rc/ir-sharp-decoder.c
index 317677f..d37af7c 100644
--- a/drivers/media/rc/ir-sharp-decoder.c
+++ b/drivers/media/rc/ir-sharp-decoder.c
@@ -173,9 +173,59 @@ static int ir_sharp_decode(struct rc_dev *dev, struct ir_raw_event ev)
return -EINVAL;
}
+static struct ir_raw_timings_pd ir_sharp_timings = {
+ .header_pulse = 0,
+ .header_space = 0,
+ .bit_pulse = SHARP_BIT_PULSE,
+ .bit_space[0] = SHARP_BIT_0_PERIOD,
+ .bit_space[1] = SHARP_BIT_1_PERIOD,
+ .trailer_pulse = SHARP_BIT_PULSE,
+ .trailer_space = SHARP_ECHO_SPACE,
+ .msb_first = 1,
+};
+
+/**
+ * ir_sharp_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_sharp_encode(enum rc_type protocol, u32 scancode,
+ struct ir_raw_event *events, unsigned int max)
+{
+ struct ir_raw_event *e = events;
+ int ret;
+ u32 raw;
+
+ raw = (((bitrev8(scancode >> 8) >> 3) << 8) & 0x1f00) |
+ bitrev8(scancode);
+ ret = ir_raw_gen_pd(&e, max, &ir_sharp_timings, SHARP_NBITS,
+ (raw << 2) | 2);
+ if (ret < 0)
+ return ret;
+
+ max -= ret;
+
+ raw = (((bitrev8(scancode >> 8) >> 3) << 8) & 0x1f00) |
+ bitrev8(~scancode);
+ ret = ir_raw_gen_pd(&e, max, &ir_sharp_timings, SHARP_NBITS,
+ (raw << 2) | 1);
+ if (ret < 0)
+ return ret;
+
+ return e - events;
+}
+
static struct ir_raw_handler sharp_handler = {
.protocols = RC_BIT_SHARP,
.decode = ir_sharp_decode,
+ .encode = ir_sharp_encode,
};
static int __init ir_sharp_decode_init(void)
--
2.9.3
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