cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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img-ir-jvc.c (1885B)

      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};