1/*
2 * This file is part of wl18xx
3 *
4 * Copyright (C) 2011 Texas Instruments
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * version 2 as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
18 * 02110-1301 USA
19 *
20 */
21
22#include "../wlcore/wlcore.h"
23#include "../wlcore/io.h"
24
25#include "io.h"
26
27int wl18xx_top_reg_write(struct wl1271 *wl, int addr, u16 val)
28{
29	u32 tmp;
30	int ret;
31
32	if (WARN_ON(addr % 2))
33		return -EINVAL;
34
35	if ((addr % 4) == 0) {
36		ret = wlcore_read32(wl, addr, &tmp);
37		if (ret < 0)
38			goto out;
39
40		tmp = (tmp & 0xffff0000) | val;
41		ret = wlcore_write32(wl, addr, tmp);
42	} else {
43		ret = wlcore_read32(wl, addr - 2, &tmp);
44		if (ret < 0)
45			goto out;
46
47		tmp = (tmp & 0xffff) | (val << 16);
48		ret = wlcore_write32(wl, addr - 2, tmp);
49	}
50
51out:
52	return ret;
53}
54
55int wl18xx_top_reg_read(struct wl1271 *wl, int addr, u16 *out)
56{
57	u32 val = 0;
58	int ret;
59
60	if (WARN_ON(addr % 2))
61		return -EINVAL;
62
63	if ((addr % 4) == 0) {
64		/* address is 4-bytes aligned */
65		ret = wlcore_read32(wl, addr, &val);
66		if (ret >= 0 && out)
67			*out = val & 0xffff;
68	} else {
69		ret = wlcore_read32(wl, addr - 2, &val);
70		if (ret >= 0 && out)
71			*out = (val & 0xffff0000) >> 16;
72	}
73
74	return ret;
75}
76