// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * ImgTec IR Decoder setup for JVC protocol.
 *
 * Copyright 2012-2014 Imagination Technologies Ltd.
 */

#include "img-ir-hw.h"

/* Convert JVC data to a scancode */
static int img_ir_jvc_scancode(int len, u64 raw, u64 enabled_protocols,
                               struct img_ir_scancode_req *request)
{
        unsigned int cust, data;

        if (len != 16)
                return -EINVAL;

        cust = (raw >> 0) & 0xff;
        data = (raw >> 8) & 0xff;

        request->protocol = RC_PROTO_JVC;
        request->scancode = cust << 8 | data;
        return IMG_IR_SCANCODE;
}

/* Convert JVC scancode to JVC data filter */
static int img_ir_jvc_filter(const struct rc_scancode_filter *in,
                             struct img_ir_filter *out, u64 protocols)
{
        unsigned int cust, data;
        unsigned int cust_m, data_m;

        cust   = (in->data >> 8) & 0xff;
        cust_m = (in->mask >> 8) & 0xff;
        data   = (in->data >> 0) & 0xff;
        data_m = (in->mask >> 0) & 0xff;

        out->data = cust   | data << 8;
        out->mask = cust_m | data_m << 8;

        return 0;
}

/*
 * JVC decoder
 * See also http://www.sbprojects.com/knowledge/ir/jvc.php
 *          http://support.jvc.com/consumer/support/documents/RemoteCodes.pdf
 */
struct img_ir_decoder img_ir_jvc = {
        .type = RC_PROTO_BIT_JVC,
        .control = {
                .decoden = 1,
                .code_type = IMG_IR_CODETYPE_PULSEDIST,
        },
        /* main timings */
        .unit = 527500, /* 527.5 us */
        .timings = {
                /* leader symbol */
                .ldr = {
                        .pulse = { 16   /* 8.44 ms */ },
                        .space = { 8    /* 4.22 ms */ },
                },
                /* 0 symbol */
                .s00 = {
                        .pulse = { 1    /* 527.5 us +-60 us */ },
                        .space = { 1    /* 527.5 us */ },
                },
                /* 1 symbol */
                .s01 = {
                        .pulse = { 1    /* 527.5 us +-60 us */ },
                        .space = { 3    /* 1.5825 ms +-40 us */ },
                },
                /* free time */
                .ft = {
                        .minlen = 16,
                        .maxlen = 16,
                        .ft_min = 10,   /* 5.275 ms */
                },
        },
        /* scancode logic */
        .scancode = img_ir_jvc_scancode,
        .filter = img_ir_jvc_filter,
};