1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * This file is part of wl18xx
4 *
5 * Copyright (C) 2011 Texas Instruments
6 */
7
8#include "../wlcore/wlcore.h"
9#include "../wlcore/io.h"
10
11#include "io.h"
12
13int wl18xx_top_reg_write(struct wl1271 *wl, int addr, u16 val)
14{
15	u32 tmp;
16	int ret;
17
18	if (WARN_ON(addr % 2))
19		return -EINVAL;
20
21	if ((addr % 4) == 0) {
22		ret = wlcore_read32(wl, addr, &tmp);
23		if (ret < 0)
24			goto out;
25
26		tmp = (tmp & 0xffff0000) | val;
27		ret = wlcore_write32(wl, addr, tmp);
28	} else {
29		ret = wlcore_read32(wl, addr - 2, &tmp);
30		if (ret < 0)
31			goto out;
32
33		tmp = (tmp & 0xffff) | (val << 16);
34		ret = wlcore_write32(wl, addr - 2, tmp);
35	}
36
37out:
38	return ret;
39}
40
41int wl18xx_top_reg_read(struct wl1271 *wl, int addr, u16 *out)
42{
43	u32 val = 0;
44	int ret;
45
46	if (WARN_ON(addr % 2))
47		return -EINVAL;
48
49	if ((addr % 4) == 0) {
50		/* address is 4-bytes aligned */
51		ret = wlcore_read32(wl, addr, &val);
52		if (ret >= 0 && out)
53			*out = val & 0xffff;
54	} else {
55		ret = wlcore_read32(wl, addr - 2, &val);
56		if (ret >= 0 && out)
57			*out = (val & 0xffff0000) >> 16;
58	}
59
60	return ret;
61}
62