[PATCH] zd1211rw: cleanups
[linux-2.6.git] / drivers / net / wireless / zd1211rw / zd_rf.c
1 /* zd_rf.c
2  *
3  * This program is free software; you can redistribute it and/or modify
4  * it under the terms of the GNU General Public License as published by
5  * the Free Software Foundation; either version 2 of the License, or
6  * (at your option) any later version.
7  *
8  * This program is distributed in the hope that it will be useful,
9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11  * GNU General Public License for more details.
12  *
13  * You should have received a copy of the GNU General Public License
14  * along with this program; if not, write to the Free Software
15  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16  */
17
18 #include <linux/errno.h>
19 #include <linux/string.h>
20
21 #include "zd_def.h"
22 #include "zd_rf.h"
23 #include "zd_ieee80211.h"
24 #include "zd_chip.h"
25
26 static const char *rfs[] = {
27         [0]             = "unknown RF0",
28         [1]             = "unknown RF1",
29         [UW2451_RF]     = "UW2451_RF",
30         [UCHIP_RF]      = "UCHIP_RF",
31         [AL2230_RF]     = "AL2230_RF",
32         [AL7230B_RF]    = "AL7230B_RF",
33         [THETA_RF]      = "THETA_RF",
34         [AL2210_RF]     = "AL2210_RF",
35         [MAXIM_NEW_RF]  = "MAXIM_NEW_RF",
36         [UW2453_RF]     = "UW2453_RF",
37         [AL2230S_RF]    = "AL2230S_RF",
38         [RALINK_RF]     = "RALINK_RF",
39         [INTERSIL_RF]   = "INTERSIL_RF",
40         [RF2959_RF]     = "RF2959_RF",
41         [MAXIM_NEW2_RF] = "MAXIM_NEW2_RF",
42         [PHILIPS_RF]    = "PHILIPS_RF",
43 };
44
45 const char *zd_rf_name(u8 type)
46 {
47         if (type & 0xf0)
48                 type = 0;
49         return rfs[type];
50 }
51
52 void zd_rf_init(struct zd_rf *rf)
53 {
54         memset(rf, 0, sizeof(*rf));
55 }
56
57 void zd_rf_clear(struct zd_rf *rf)
58 {
59         ZD_MEMCLEAR(rf, sizeof(*rf));
60 }
61
62 int zd_rf_init_hw(struct zd_rf *rf, u8 type)
63 {
64         int r, t;
65         struct zd_chip *chip = zd_rf_to_chip(rf);
66
67         ZD_ASSERT(mutex_is_locked(&chip->mutex));
68         switch (type) {
69         case RF2959_RF:
70                 r = zd_rf_init_rf2959(rf);
71                 if (r)
72                         return r;
73                 break;
74         case AL2230_RF:
75                 r = zd_rf_init_al2230(rf);
76                 if (r)
77                         return r;
78                 break;
79         case AL7230B_RF:
80                 r = zd_rf_init_al7230b(rf);
81                 if (r)
82                         return r;
83                 break;
84         default:
85                 dev_err(zd_chip_dev(chip),
86                         "RF %s %#x is not supported\n", zd_rf_name(type), type);
87                 rf->type = 0;
88                 return -ENODEV;
89         }
90
91         rf->type = type;
92
93         r = zd_chip_lock_phy_regs(chip);
94         if (r)
95                 return r;
96         t = rf->init_hw(rf);
97         r = zd_chip_unlock_phy_regs(chip);
98         if (t)
99                 r = t;
100         return r;
101 }
102
103 int zd_rf_scnprint_id(struct zd_rf *rf, char *buffer, size_t size)
104 {
105         return scnprintf(buffer, size, "%s", zd_rf_name(rf->type));
106 }
107
108 int zd_rf_set_channel(struct zd_rf *rf, u8 channel)
109 {
110         int r;
111
112         ZD_ASSERT(mutex_is_locked(&zd_rf_to_chip(rf)->mutex));
113         if (channel < MIN_CHANNEL24)
114                 return -EINVAL;
115         if (channel > MAX_CHANNEL24)
116                 return -EINVAL;
117         dev_dbg_f(zd_chip_dev(zd_rf_to_chip(rf)), "channel: %d\n", channel);
118
119         r = rf->set_channel(rf, channel);
120         if (r >= 0)
121                 rf->channel = channel;
122         return r;
123 }
124
125 int zd_switch_radio_on(struct zd_rf *rf)
126 {
127         int r, t;
128         struct zd_chip *chip = zd_rf_to_chip(rf);
129
130         ZD_ASSERT(mutex_is_locked(&chip->mutex));
131         r = zd_chip_lock_phy_regs(chip);
132         if (r)
133                 return r;
134         t = rf->switch_radio_on(rf);
135         r = zd_chip_unlock_phy_regs(chip);
136         if (t)
137                 r = t;
138         return r;
139 }
140
141 int zd_switch_radio_off(struct zd_rf *rf)
142 {
143         int r, t;
144         struct zd_chip *chip = zd_rf_to_chip(rf);
145
146         /* TODO: move phy regs handling to zd_chip */
147         ZD_ASSERT(mutex_is_locked(&chip->mutex));
148         r = zd_chip_lock_phy_regs(chip);
149         if (r)
150                 return r;
151         t = rf->switch_radio_off(rf);
152         r = zd_chip_unlock_phy_regs(chip);
153         if (t)
154                 r = t;
155         return r;
156 }