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

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Add the capability to encode JVC scancodes as raw events.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Sean Young 2016-12-06 17:01:03 -02:00 committed by Mauro Carvalho Chehab
parent 141cfb1432
commit d8a2ae5cbd
1 changed files with 39 additions and 0 deletions
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39
drivers/media/rc/ir-jvc-decoder.c
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@ -170,9 +170,48 @@ static int ir_jvc_decode(struct rc_dev *dev, struct ir_raw_event ev)
return -EINVAL;
}
static const struct ir_raw_timings_pd ir_jvc_timings = {
.header_pulse = JVC_HEADER_PULSE,
.header_space = JVC_HEADER_SPACE,
.bit_pulse = JVC_BIT_PULSE,
.bit_space[0] = JVC_BIT_0_SPACE,
.bit_space[1] = JVC_BIT_1_SPACE,
.trailer_pulse = JVC_TRAILER_PULSE,
.trailer_space = JVC_TRAILER_SPACE,
.msb_first = 1,
};
/**
* ir_jvc_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_jvc_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 = (bitrev8((scancode >> 8) & 0xff) << 8) |
(bitrev8((scancode >> 0) & 0xff) << 0);
ret = ir_raw_gen_pd(&e, max, &ir_jvc_timings, JVC_NBITS, raw);
if (ret < 0)
return ret;
return e - events;
}
static struct ir_raw_handler jvc_handler = {
.protocols = RC_BIT_JVC,
.decode = ir_jvc_decode,
.encode = ir_jvc_encode,
};
static int __init ir_jvc_decode_init(void)