// SPDX-License-Identifier: GPL-2.0-or-later

#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/sw842.h>
#include <linux/vmalloc.h>

#include "backend_842.h"

static void release_params_842(struct zcomp_params *params)
{
}

static int setup_params_842(struct zcomp_params *params)
{
        return 0;
}

static void destroy_842(struct zcomp_ctx *ctx)
{
        kfree(ctx->context);
}

static int create_842(struct zcomp_params *params, struct zcomp_ctx *ctx)
{
        ctx->context = kmalloc(SW842_MEM_COMPRESS, GFP_KERNEL);
        if (!ctx->context)
                return -ENOMEM;
        return 0;
}

static int compress_842(struct zcomp_params *params, struct zcomp_ctx *ctx,
                        struct zcomp_req *req)
{
        unsigned int dlen = req->dst_len;
        int ret;

        ret = sw842_compress(req->src, req->src_len, req->dst, &dlen,
                             ctx->context);
        if (ret == 0)
                req->dst_len = dlen;
        return ret;
}

static int decompress_842(struct zcomp_params *params, struct zcomp_ctx *ctx,
                          struct zcomp_req *req)
{
        unsigned int dlen = req->dst_len;

        return sw842_decompress(req->src, req->src_len, req->dst, &dlen);
}

const struct zcomp_ops backend_842 = {
        .compress       = compress_842,
        .decompress     = decompress_842,
        .create_ctx     = create_842,
        .destroy_ctx    = destroy_842,
        .setup_params   = setup_params_842,
        .release_params = release_params_842,
        .name           = "842",
};