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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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120703f9eb
Right now the protocol information is not preserved, rc-core gets handed a scancode but has no idea which protocol it corresponds to. This patch (which required reading through the source/keymap for all drivers, not fun) makes the protocol information explicit which is important documentation and makes it easier to e.g. support multiple protocols with one decoder (think rc5 and rc-streamzap). The information isn't used yet so there should be no functional changes. [m.chehab@samsung.com: rebased, added cxusb and removed bad whitespacing] Signed-off-by: David Härdeman <david@hardeman.nu> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
130 lines
3.0 KiB
C
130 lines
3.0 KiB
C
/*
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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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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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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, enum rc_type *protocol,
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u32 *scancode, u64 enabled_protocols)
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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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*protocol = RC_TYPE_SANYO;
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*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_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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