1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * ImgTec IR Decoder setup for JVC protocol.
4 *
5 * Copyright 2012-2014 Imagination Technologies Ltd.
6 */
7
8#include "img-ir-hw.h"
9
10/* Convert JVC data to a scancode */
11static int img_ir_jvc_scancode(int len, u64 raw, u64 enabled_protocols,
12			       struct img_ir_scancode_req *request)
13{
14	unsigned int cust, data;
15
16	if (len != 16)
17		return -EINVAL;
18
19	cust = (raw >> 0) & 0xff;
20	data = (raw >> 8) & 0xff;
21
22	request->protocol = RC_PROTO_JVC;
23	request->scancode = cust << 8 | data;
24	return IMG_IR_SCANCODE;
25}
26
27/* Convert JVC scancode to JVC data filter */
28static int img_ir_jvc_filter(const struct rc_scancode_filter *in,
29			     struct img_ir_filter *out, u64 protocols)
30{
31	unsigned int cust, data;
32	unsigned int cust_m, data_m;
33
34	cust   = (in->data >> 8) & 0xff;
35	cust_m = (in->mask >> 8) & 0xff;
36	data   = (in->data >> 0) & 0xff;
37	data_m = (in->mask >> 0) & 0xff;
38
39	out->data = cust   | data << 8;
40	out->mask = cust_m | data_m << 8;
41
42	return 0;
43}
44
45/*
46 * JVC decoder
47 * See also http://www.sbprojects.com/knowledge/ir/jvc.php
48 *          http://support.jvc.com/consumer/support/documents/RemoteCodes.pdf
49 */
50struct img_ir_decoder img_ir_jvc = {
51	.type = RC_PROTO_BIT_JVC,
52	.control = {
53		.decoden = 1,
54		.code_type = IMG_IR_CODETYPE_PULSEDIST,
55	},
56	/* main timings */
57	.unit = 527500, /* 527.5 us */
58	.timings = {
59		/* leader symbol */
60		.ldr = {
61			.pulse = { 16	/* 8.44 ms */ },
62			.space = { 8	/* 4.22 ms */ },
63		},
64		/* 0 symbol */
65		.s00 = {
66			.pulse = { 1	/* 527.5 us +-60 us */ },
67			.space = { 1	/* 527.5 us */ },
68		},
69		/* 1 symbol */
70		.s01 = {
71			.pulse = { 1	/* 527.5 us +-60 us */ },
72			.space = { 3	/* 1.5825 ms +-40 us */ },
73		},
74		/* free time */
75		.ft = {
76			.minlen = 16,
77			.maxlen = 16,
78			.ft_min = 10,	/* 5.275 ms */
79		},
80	},
81	/* scancode logic */
82	.scancode = img_ir_jvc_scancode,
83	.filter = img_ir_jvc_filter,
84};
85