// SPDX-License-Identifier: GPL-2.0-only
/*
 * This file is part of wl18xx
 *
 * Copyright (C) 2011 Texas Instruments
 */

#include "../wlcore/wlcore.h"
#include "../wlcore/io.h"

#include "io.h"

int wl18xx_top_reg_write(struct wl1271 *wl, int addr, u16 val)
{
        u32 tmp;
        int ret;

        if (WARN_ON(addr % 2))
                return -EINVAL;

        if ((addr % 4) == 0) {
                ret = wlcore_read32(wl, addr, &tmp);
                if (ret < 0)
                        goto out;

                tmp = (tmp & 0xffff0000) | val;
                ret = wlcore_write32(wl, addr, tmp);
        } else {
                ret = wlcore_read32(wl, addr - 2, &tmp);
                if (ret < 0)
                        goto out;

                tmp = (tmp & 0xffff) | (val << 16);
                ret = wlcore_write32(wl, addr - 2, tmp);
        }

out:
        return ret;
}

int wl18xx_top_reg_read(struct wl1271 *wl, int addr, u16 *out)
{
        u32 val = 0;
        int ret;

        if (WARN_ON(addr % 2))
                return -EINVAL;

        if ((addr % 4) == 0) {
                /* address is 4-bytes aligned */
                ret = wlcore_read32(wl, addr, &val);
                if (ret >= 0 && out)
                        *out = val & 0xffff;
        } else {
                ret = wlcore_read32(wl, addr - 2, &val);
                if (ret >= 0 && out)
                        *out = (val & 0xffff0000) >> 16;
        }

        return ret;
}