82 lines
1.7 KiB
C
82 lines
1.7 KiB
C
/*
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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, int *scancode, u64 protocols)
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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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*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_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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