ath5k: Read Spur channels from EEPROM
[linux-2.6] / drivers / net / wireless / zd1211rw / zd_rf.c
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
48 const char *zd_rf_name(u8 type)
49 {
50         if (type & 0xf0)
51                 type = 0;
52         return rfs[type];
53 }
54
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
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
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
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
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
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
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
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
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