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