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 */ |
11 | static 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 */ |
28 | static 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 | */ |
50 | struct 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 | |