[media] rc: ir-sony-decoder: Add encode capability
Add the capability to encode Sony scancodes as raw events. Sony uses
pulse length rather than pulse distance.
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-sony-decoder.c b/drivers/media/rc/ir-sony-decoder.c
index baa972c..355fa81 100644
--- a/drivers/media/rc/ir-sony-decoder.c
+++ b/drivers/media/rc/ir-sony-decoder.c
@@ -169,9 +169,57 @@ static int ir_sony_decode(struct rc_dev *dev, struct ir_raw_event ev)
return 0;
}
+static const struct ir_raw_timings_pl ir_sony_timings = {
+ .header_pulse = SONY_HEADER_PULSE,
+ .bit_space = SONY_BIT_SPACE,
+ .bit_pulse[0] = SONY_BIT_0_PULSE,
+ .bit_pulse[1] = SONY_BIT_1_PULSE,
+ .trailer_space = SONY_TRAILER_SPACE + SONY_BIT_SPACE,
+ .msb_first = 0,
+};
+
+/**
+ * ir_sony_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_sony_encode(enum rc_type protocol, u32 scancode,
+ struct ir_raw_event *events, unsigned int max)
+{
+ struct ir_raw_event *e = events;
+ u32 raw, len;
+ int ret;
+
+ if (protocol == RC_TYPE_SONY12) {
+ raw = (scancode & 0x7f) | ((scancode & 0x1f0000) >> 9);
+ len = 12;
+ } else if (protocol == RC_TYPE_SONY15) {
+ raw = (scancode & 0x7f) | ((scancode & 0xff0000) >> 9);
+ len = 15;
+ } else {
+ raw = (scancode & 0x7f) | ((scancode & 0x1f0000) >> 9) |
+ ((scancode & 0xff00) << 4);
+ len = 20;
+ }
+
+ ret = ir_raw_gen_pl(&e, max, &ir_sony_timings, len, raw);
+ if (ret < 0)
+ return ret;
+
+ return e - events;
+}
+
static struct ir_raw_handler sony_handler = {
.protocols = RC_BIT_SONY12 | RC_BIT_SONY15 | RC_BIT_SONY20,
.decode = ir_sony_decode,
+ .encode = ir_sony_encode,
};
static int __init ir_sony_decode_init(void)