1/* ZD1211 USB-WLAN driver for Linux
2 *
3 * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
4 * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
18 */
19
20#include <linux/errno.h>
21#include <linux/string.h>
22
23#include "zd_def.h"
24#include "zd_rf.h"
25#include "zd_mac.h"
26#include "zd_chip.h"
27
28static const char * const rfs[] = {
29	[0]		= "unknown RF0",
30	[1]		= "unknown RF1",
31	[UW2451_RF]	= "UW2451_RF",
32	[UCHIP_RF]	= "UCHIP_RF",
33	[AL2230_RF]	= "AL2230_RF",
34	[AL7230B_RF]	= "AL7230B_RF",
35	[THETA_RF]	= "THETA_RF",
36	[AL2210_RF]	= "AL2210_RF",
37	[MAXIM_NEW_RF]	= "MAXIM_NEW_RF",
38	[UW2453_RF]	= "UW2453_RF",
39	[AL2230S_RF]	= "AL2230S_RF",
40	[RALINK_RF]	= "RALINK_RF",
41	[INTERSIL_RF]	= "INTERSIL_RF",
42	[RF2959_RF]	= "RF2959_RF",
43	[MAXIM_NEW2_RF]	= "MAXIM_NEW2_RF",
44	[PHILIPS_RF]	= "PHILIPS_RF",
45};
46
47const char *zd_rf_name(u8 type)
48{
49	if (type & 0xf0)
50		type = 0;
51	return rfs[type];
52}
53
54void zd_rf_init(struct zd_rf *rf)
55{
56	memset(rf, 0, sizeof(*rf));
57
58	/* default to update channel integration, as almost all RF's do want
59	 * this */
60	rf->update_channel_int = 1;
61}
62
63void zd_rf_clear(struct zd_rf *rf)
64{
65	if (rf->clear)
66		rf->clear(rf);
67	ZD_MEMCLEAR(rf, sizeof(*rf));
68}
69
70int zd_rf_init_hw(struct zd_rf *rf, u8 type)
71{
72	int r = 0;
73	int t;
74	struct zd_chip *chip = zd_rf_to_chip(rf);
75
76	ZD_ASSERT(mutex_is_locked(&chip->mutex));
77	switch (type) {
78	case RF2959_RF:
79		r = zd_rf_init_rf2959(rf);
80		break;
81	case AL2230_RF:
82	case AL2230S_RF:
83		r = zd_rf_init_al2230(rf);
84		break;
85	case AL7230B_RF:
86		r = zd_rf_init_al7230b(rf);
87		break;
88	case MAXIM_NEW_RF:
89	case UW2453_RF:
90		r = zd_rf_init_uw2453(rf);
91		break;
92	default:
93		dev_err(zd_chip_dev(chip),
94			"RF %s %#x is not supported\n", zd_rf_name(type), type);
95		rf->type = 0;
96		return -ENODEV;
97	}
98
99	if (r)
100		return r;
101
102	rf->type = type;
103
104	r = zd_chip_lock_phy_regs(chip);
105	if (r)
106		return r;
107	t = rf->init_hw(rf);
108	r = zd_chip_unlock_phy_regs(chip);
109	if (t)
110		r = t;
111	return r;
112}
113
114int zd_rf_scnprint_id(struct zd_rf *rf, char *buffer, size_t size)
115{
116	return scnprintf(buffer, size, "%s", zd_rf_name(rf->type));
117}
118
119int zd_rf_set_channel(struct zd_rf *rf, u8 channel)
120{
121	int r;
122
123	ZD_ASSERT(mutex_is_locked(&zd_rf_to_chip(rf)->mutex));
124	if (channel < MIN_CHANNEL24)
125		return -EINVAL;
126	if (channel > MAX_CHANNEL24)
127		return -EINVAL;
128	dev_dbg_f(zd_chip_dev(zd_rf_to_chip(rf)), "channel: %d\n", channel);
129
130	r = rf->set_channel(rf, channel);
131	if (r >= 0)
132		rf->channel = channel;
133	return r;
134}
135
136int zd_switch_radio_on(struct zd_rf *rf)
137{
138	int r, t;
139	struct zd_chip *chip = zd_rf_to_chip(rf);
140
141	ZD_ASSERT(mutex_is_locked(&chip->mutex));
142	r = zd_chip_lock_phy_regs(chip);
143	if (r)
144		return r;
145	t = rf->switch_radio_on(rf);
146	r = zd_chip_unlock_phy_regs(chip);
147	if (t)
148		r = t;
149	return r;
150}
151
152int zd_switch_radio_off(struct zd_rf *rf)
153{
154	int r, t;
155	struct zd_chip *chip = zd_rf_to_chip(rf);
156
157	/* TODO: move phy regs handling to zd_chip */
158	ZD_ASSERT(mutex_is_locked(&chip->mutex));
159	r = zd_chip_lock_phy_regs(chip);
160	if (r)
161		return r;
162	t = rf->switch_radio_off(rf);
163	r = zd_chip_unlock_phy_regs(chip);
164	if (t)
165		r = t;
166	return r;
167}
168
169int zd_rf_patch_6m_band_edge(struct zd_rf *rf, u8 channel)
170{
171	if (!rf->patch_6m_band_edge)
172		return 0;
173
174	return rf->patch_6m_band_edge(rf, channel);
175}
176
177int zd_rf_generic_patch_6m(struct zd_rf *rf, u8 channel)
178{
179	return zd_chip_generic_patch_6m_band(zd_rf_to_chip(rf), channel);
180}
181
182