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84 lines
1.8 KiB
84 lines
1.8 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* ImgTec IR Decoder setup for JVC protocol. |
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* |
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* Copyright 2012-2014 Imagination Technologies Ltd. |
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*/ |
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#include "img-ir-hw.h" |
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/* Convert JVC data to a scancode */ |
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static int img_ir_jvc_scancode(int len, u64 raw, u64 enabled_protocols, |
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struct img_ir_scancode_req *request) |
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{ |
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unsigned int cust, data; |
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if (len != 16) |
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return -EINVAL; |
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cust = (raw >> 0) & 0xff; |
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data = (raw >> 8) & 0xff; |
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request->protocol = RC_PROTO_JVC; |
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request->scancode = cust << 8 | data; |
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return IMG_IR_SCANCODE; |
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} |
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/* Convert JVC scancode to JVC data filter */ |
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static int img_ir_jvc_filter(const struct rc_scancode_filter *in, |
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struct img_ir_filter *out, u64 protocols) |
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{ |
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unsigned int cust, data; |
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unsigned int cust_m, data_m; |
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cust = (in->data >> 8) & 0xff; |
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cust_m = (in->mask >> 8) & 0xff; |
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data = (in->data >> 0) & 0xff; |
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data_m = (in->mask >> 0) & 0xff; |
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out->data = cust | data << 8; |
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out->mask = cust_m | data_m << 8; |
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return 0; |
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} |
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/* |
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* JVC decoder |
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* See also http://www.sbprojects.com/knowledge/ir/jvc.php |
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* http://support.jvc.com/consumer/support/documents/RemoteCodes.pdf |
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*/ |
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struct img_ir_decoder img_ir_jvc = { |
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.type = RC_PROTO_BIT_JVC, |
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.control = { |
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.decoden = 1, |
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.code_type = IMG_IR_CODETYPE_PULSEDIST, |
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}, |
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/* main timings */ |
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.unit = 527500, /* 527.5 us */ |
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.timings = { |
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/* leader symbol */ |
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.ldr = { |
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.pulse = { 16 /* 8.44 ms */ }, |
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.space = { 8 /* 4.22 ms */ }, |
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}, |
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/* 0 symbol */ |
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.s00 = { |
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.pulse = { 1 /* 527.5 us +-60 us */ }, |
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.space = { 1 /* 527.5 us */ }, |
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}, |
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/* 1 symbol */ |
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.s01 = { |
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.pulse = { 1 /* 527.5 us +-60 us */ }, |
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.space = { 3 /* 1.5825 ms +-40 us */ }, |
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}, |
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/* free time */ |
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.ft = { |
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.minlen = 16, |
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.maxlen = 16, |
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.ft_min = 10, /* 5.275 ms */ |
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}, |
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}, |
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/* scancode logic */ |
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.scancode = img_ir_jvc_scancode, |
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.filter = img_ir_jvc_filter, |
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};
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