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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>
126 lines
2.8 KiB
C
126 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* ImgTec IR Decoder setup for Sanyo protocol.
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*
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* Copyright 2012-2014 Imagination Technologies Ltd.
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*
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* From ir-sanyo-decoder.c:
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*
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* This protocol uses the NEC protocol timings. However, data is formatted as:
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* 13 bits Custom Code
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* 13 bits NOT(Custom Code)
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* 8 bits Key data
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* 8 bits NOT(Key data)
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*
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* According with LIRC, this protocol is used on Sanyo, Aiwa and Chinon
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* Information for this protocol is available at the Sanyo LC7461 datasheet.
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*/
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#include "img-ir-hw.h"
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/* Convert Sanyo data to a scancode */
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static int img_ir_sanyo_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, addr_inv, data, data_inv;
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/* a repeat code has no data */
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if (!len)
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return IMG_IR_REPEATCODE;
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if (len != 42)
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return -EINVAL;
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addr = (raw >> 0) & 0x1fff;
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addr_inv = (raw >> 13) & 0x1fff;
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data = (raw >> 26) & 0xff;
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data_inv = (raw >> 34) & 0xff;
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/* Validate data */
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if ((data_inv ^ data) != 0xff)
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return -EINVAL;
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/* Validate address */
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if ((addr_inv ^ addr) != 0x1fff)
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return -EINVAL;
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/* Normal Sanyo */
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request->protocol = RC_PROTO_SANYO;
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request->scancode = addr << 8 | data;
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return IMG_IR_SCANCODE;
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}
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/* Convert Sanyo scancode to Sanyo data filter */
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static int img_ir_sanyo_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, addr_inv, data, data_inv;
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unsigned int addr_m, data_m;
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data = in->data & 0xff;
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data_m = in->mask & 0xff;
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data_inv = data ^ 0xff;
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if (in->data & 0xff700000)
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return -EINVAL;
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addr = (in->data >> 8) & 0x1fff;
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addr_m = (in->mask >> 8) & 0x1fff;
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addr_inv = addr ^ 0x1fff;
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out->data = (u64)data_inv << 34 |
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(u64)data << 26 |
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addr_inv << 13 |
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addr;
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out->mask = (u64)data_m << 34 |
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(u64)data_m << 26 |
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addr_m << 13 |
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addr_m;
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return 0;
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}
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/* Sanyo decoder */
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struct img_ir_decoder img_ir_sanyo = {
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.type = RC_PROTO_BIT_SANYO,
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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 = 562500, /* 562.5 us */
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.timings = {
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/* leader symbol */
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.ldr = {
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.pulse = { 16 /* 9ms */ },
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.space = { 8 /* 4.5ms */ },
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},
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/* 0 symbol */
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.s00 = {
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.pulse = { 1 /* 562.5 us */ },
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.space = { 1 /* 562.5 us */ },
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},
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/* 1 symbol */
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.s01 = {
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.pulse = { 1 /* 562.5 us */ },
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.space = { 3 /* 1687.5 us */ },
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},
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/* free time */
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.ft = {
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.minlen = 42,
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.maxlen = 42,
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.ft_min = 10, /* 5.625 ms */
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},
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},
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/* repeat codes */
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.repeat = 108, /* 108 ms */
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.rtimings = {
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/* leader symbol */
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.ldr = {
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.space = { 4 /* 2.25 ms */ },
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},
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/* free time */
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.ft = {
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.minlen = 0, /* repeat code has no data */
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.maxlen = 0,
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},
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},
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/* scancode logic */
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.scancode = img_ir_sanyo_scancode,
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.filter = img_ir_sanyo_filter,
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};
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