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, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20
21 #include <linux/errno.h>
22 #include <linux/string.h>
23
24 #include "zd_def.h"
25 #include "zd_rf.h"
26 #include "zd_mac.h"
27 #include "zd_chip.h"
28
29 static const char * const rfs[] = {
30 [0] = "unknown RF0",
31 [1] = "unknown RF1",
32 [UW2451_RF] = "UW2451_RF",
33 [UCHIP_RF] = "UCHIP_RF",
34 [AL2230_RF] = "AL2230_RF",
35 [AL7230B_RF] = "AL7230B_RF",
36 [THETA_RF] = "THETA_RF",
37 [AL2210_RF] = "AL2210_RF",
38 [MAXIM_NEW_RF] = "MAXIM_NEW_RF",
39 [UW2453_RF] = "UW2453_RF",
40 [AL2230S_RF] = "AL2230S_RF",
41 [RALINK_RF] = "RALINK_RF",
42 [INTERSIL_RF] = "INTERSIL_RF",
43 [RF2959_RF] = "RF2959_RF",
44 [MAXIM_NEW2_RF] = "MAXIM_NEW2_RF",
45 [PHILIPS_RF] = "PHILIPS_RF",
46 };
47
zd_rf_name(u8 type)48 const char *zd_rf_name(u8 type)
49 {
50 if (type & 0xf0)
51 type = 0;
52 return rfs[type];
53 }
54
zd_rf_init(struct zd_rf * rf)55 void zd_rf_init(struct zd_rf *rf)
56 {
57 memset(rf, 0, sizeof(*rf));
58
59 /* default to update channel integration, as almost all RF's do want
60 * this */
61 rf->update_channel_int = 1;
62 }
63
zd_rf_clear(struct zd_rf * rf)64 void zd_rf_clear(struct zd_rf *rf)
65 {
66 if (rf->clear)
67 rf->clear(rf);
68 ZD_MEMCLEAR(rf, sizeof(*rf));
69 }
70
zd_rf_init_hw(struct zd_rf * rf,u8 type)71 int zd_rf_init_hw(struct zd_rf *rf, u8 type)
72 {
73 int r = 0;
74 int t;
75 struct zd_chip *chip = zd_rf_to_chip(rf);
76
77 ZD_ASSERT(mutex_is_locked(&chip->mutex));
78 switch (type) {
79 case RF2959_RF:
80 r = zd_rf_init_rf2959(rf);
81 break;
82 case AL2230_RF:
83 case AL2230S_RF:
84 r = zd_rf_init_al2230(rf);
85 break;
86 case AL7230B_RF:
87 r = zd_rf_init_al7230b(rf);
88 break;
89 case MAXIM_NEW_RF:
90 case UW2453_RF:
91 r = zd_rf_init_uw2453(rf);
92 break;
93 default:
94 dev_err(zd_chip_dev(chip),
95 "RF %s %#x is not supported\n", zd_rf_name(type), type);
96 rf->type = 0;
97 return -ENODEV;
98 }
99
100 if (r)
101 return r;
102
103 rf->type = type;
104
105 r = zd_chip_lock_phy_regs(chip);
106 if (r)
107 return r;
108 t = rf->init_hw(rf);
109 r = zd_chip_unlock_phy_regs(chip);
110 if (t)
111 r = t;
112 return r;
113 }
114
zd_rf_scnprint_id(struct zd_rf * rf,char * buffer,size_t size)115 int zd_rf_scnprint_id(struct zd_rf *rf, char *buffer, size_t size)
116 {
117 return scnprintf(buffer, size, "%s", zd_rf_name(rf->type));
118 }
119
zd_rf_set_channel(struct zd_rf * rf,u8 channel)120 int zd_rf_set_channel(struct zd_rf *rf, u8 channel)
121 {
122 int r;
123
124 ZD_ASSERT(mutex_is_locked(&zd_rf_to_chip(rf)->mutex));
125 if (channel < MIN_CHANNEL24)
126 return -EINVAL;
127 if (channel > MAX_CHANNEL24)
128 return -EINVAL;
129 dev_dbg_f(zd_chip_dev(zd_rf_to_chip(rf)), "channel: %d\n", channel);
130
131 r = rf->set_channel(rf, channel);
132 if (r >= 0)
133 rf->channel = channel;
134 return r;
135 }
136
zd_switch_radio_on(struct zd_rf * rf)137 int zd_switch_radio_on(struct zd_rf *rf)
138 {
139 int r, t;
140 struct zd_chip *chip = zd_rf_to_chip(rf);
141
142 ZD_ASSERT(mutex_is_locked(&chip->mutex));
143 r = zd_chip_lock_phy_regs(chip);
144 if (r)
145 return r;
146 t = rf->switch_radio_on(rf);
147 r = zd_chip_unlock_phy_regs(chip);
148 if (t)
149 r = t;
150 return r;
151 }
152
zd_switch_radio_off(struct zd_rf * rf)153 int zd_switch_radio_off(struct zd_rf *rf)
154 {
155 int r, t;
156 struct zd_chip *chip = zd_rf_to_chip(rf);
157
158 /* TODO: move phy regs handling to zd_chip */
159 ZD_ASSERT(mutex_is_locked(&chip->mutex));
160 r = zd_chip_lock_phy_regs(chip);
161 if (r)
162 return r;
163 t = rf->switch_radio_off(rf);
164 r = zd_chip_unlock_phy_regs(chip);
165 if (t)
166 r = t;
167 return r;
168 }
169
zd_rf_patch_6m_band_edge(struct zd_rf * rf,u8 channel)170 int zd_rf_patch_6m_band_edge(struct zd_rf *rf, u8 channel)
171 {
172 if (!rf->patch_6m_band_edge)
173 return 0;
174
175 return rf->patch_6m_band_edge(rf, channel);
176 }
177
zd_rf_generic_patch_6m(struct zd_rf * rf,u8 channel)178 int zd_rf_generic_patch_6m(struct zd_rf *rf, u8 channel)
179 {
180 return zd_chip_generic_patch_6m_band(zd_rf_to_chip(rf), channel);
181 }
182
183