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Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
102 lines
2.2 KiB
C
102 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* ImgTec IR Decoder setup for Sharp 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 Sharp data to a scancode */
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static int img_ir_sharp_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 addr, cmd, exp, chk;
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if (len != 15)
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return -EINVAL;
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addr = (raw >> 0) & 0x1f;
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cmd = (raw >> 5) & 0xff;
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exp = (raw >> 13) & 0x1;
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chk = (raw >> 14) & 0x1;
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/* validate data */
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if (!exp)
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return -EINVAL;
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if (chk)
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/* probably the second half of the message */
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return -EINVAL;
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request->protocol = RC_PROTO_SHARP;
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request->scancode = addr << 8 | cmd;
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return IMG_IR_SCANCODE;
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}
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/* Convert Sharp scancode to Sharp data filter */
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static int img_ir_sharp_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 addr, cmd, exp = 0, chk = 0;
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unsigned int addr_m, cmd_m, exp_m = 0, chk_m = 0;
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addr = (in->data >> 8) & 0x1f;
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addr_m = (in->mask >> 8) & 0x1f;
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cmd = (in->data >> 0) & 0xff;
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cmd_m = (in->mask >> 0) & 0xff;
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if (cmd_m) {
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/* if filtering commands, we can only match the first part */
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exp = 1;
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exp_m = 1;
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chk = 0;
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chk_m = 1;
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}
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out->data = addr |
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cmd << 5 |
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exp << 13 |
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chk << 14;
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out->mask = addr_m |
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cmd_m << 5 |
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exp_m << 13 |
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chk_m << 14;
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return 0;
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}
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/*
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* Sharp decoder
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* See also http://www.sbprojects.com/knowledge/ir/sharp.php
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*/
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struct img_ir_decoder img_ir_sharp = {
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.type = RC_PROTO_BIT_SHARP,
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.control = {
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.decoden = 0,
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.decodend2 = 1,
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.code_type = IMG_IR_CODETYPE_PULSEDIST,
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.d1validsel = 1,
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},
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/* main timings */
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.tolerance = 20, /* 20% */
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.timings = {
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/* 0 symbol */
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.s10 = {
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.pulse = { 320 /* 320 us */ },
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.space = { 680 /* 1 ms period */ },
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},
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/* 1 symbol */
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.s11 = {
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.pulse = { 320 /* 320 us */ },
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.space = { 1680 /* 2 ms period */ },
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},
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/* free time */
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.ft = {
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.minlen = 15,
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.maxlen = 15,
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.ft_min = 5000, /* 5 ms */
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},
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},
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/* scancode logic */
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.scancode = img_ir_sharp_scancode,
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.filter = img_ir_sharp_filter,
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};
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