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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * ImgTec IR Decoder setup for Sanyo protocol.4 *5 * Copyright 2012-2014 Imagination Technologies Ltd.6 *7 * From ir-sanyo-decoder.c:8 *9 * This protocol uses the NEC protocol timings. However, data is formatted as:10 * 13 bits Custom Code11 * 13 bits NOT(Custom Code)12 * 8 bits Key data13 * 8 bits NOT(Key data)14 *15 * According with LIRC, this protocol is used on Sanyo, Aiwa and Chinon16 * Information for this protocol is available at the Sanyo LC7461 datasheet.17 */18 19#include "img-ir-hw.h"20 21/* Convert Sanyo data to a scancode */22static int img_ir_sanyo_scancode(int len, u64 raw, u64 enabled_protocols,23 struct img_ir_scancode_req *request)24{25 unsigned int addr, addr_inv, data, data_inv;26 /* a repeat code has no data */27 if (!len)28 return IMG_IR_REPEATCODE;29 if (len != 42)30 return -EINVAL;31 addr = (raw >> 0) & 0x1fff;32 addr_inv = (raw >> 13) & 0x1fff;33 data = (raw >> 26) & 0xff;34 data_inv = (raw >> 34) & 0xff;35 /* Validate data */36 if ((data_inv ^ data) != 0xff)37 return -EINVAL;38 /* Validate address */39 if ((addr_inv ^ addr) != 0x1fff)40 return -EINVAL;41 42 /* Normal Sanyo */43 request->protocol = RC_PROTO_SANYO;44 request->scancode = addr << 8 | data;45 return IMG_IR_SCANCODE;46}47 48/* Convert Sanyo scancode to Sanyo data filter */49static int img_ir_sanyo_filter(const struct rc_scancode_filter *in,50 struct img_ir_filter *out, u64 protocols)51{52 unsigned int addr, addr_inv, data, data_inv;53 unsigned int addr_m, data_m;54 55 data = in->data & 0xff;56 data_m = in->mask & 0xff;57 data_inv = data ^ 0xff;58 59 if (in->data & 0xff700000)60 return -EINVAL;61 62 addr = (in->data >> 8) & 0x1fff;63 addr_m = (in->mask >> 8) & 0x1fff;64 addr_inv = addr ^ 0x1fff;65 66 out->data = (u64)data_inv << 34 |67 (u64)data << 26 |68 addr_inv << 13 |69 addr;70 out->mask = (u64)data_m << 34 |71 (u64)data_m << 26 |72 addr_m << 13 |73 addr_m;74 return 0;75}76 77/* Sanyo decoder */78struct img_ir_decoder img_ir_sanyo = {79 .type = RC_PROTO_BIT_SANYO,80 .control = {81 .decoden = 1,82 .code_type = IMG_IR_CODETYPE_PULSEDIST,83 },84 /* main timings */85 .unit = 562500, /* 562.5 us */86 .timings = {87 /* leader symbol */88 .ldr = {89 .pulse = { 16 /* 9ms */ },90 .space = { 8 /* 4.5ms */ },91 },92 /* 0 symbol */93 .s00 = {94 .pulse = { 1 /* 562.5 us */ },95 .space = { 1 /* 562.5 us */ },96 },97 /* 1 symbol */98 .s01 = {99 .pulse = { 1 /* 562.5 us */ },100 .space = { 3 /* 1687.5 us */ },101 },102 /* free time */103 .ft = {104 .minlen = 42,105 .maxlen = 42,106 .ft_min = 10, /* 5.625 ms */107 },108 },109 /* repeat codes */110 .repeat = 108, /* 108 ms */111 .rtimings = {112 /* leader symbol */113 .ldr = {114 .space = { 4 /* 2.25 ms */ },115 },116 /* free time */117 .ft = {118 .minlen = 0, /* repeat code has no data */119 .maxlen = 0,120 },121 },122 /* scancode logic */123 .scancode = img_ir_sanyo_scancode,124 .filter = img_ir_sanyo_filter,125};126