Merge branches 'release' and 'hp-cid' into release
[linux-2.6] / drivers / net / wireless / rtl8180_sa2400.c
1
2 /*
3  * Radio tuning for Philips SA2400 on RTL8180
4  *
5  * Copyright 2007 Andrea Merello <andreamrl@tiscali.it>
6  *
7  * Code from the BSD driver and the rtl8181 project have been
8  * very useful to understand certain things
9  *
10  * I want to thanks the Authors of such projects and the Ndiswrapper
11  * project Authors.
12  *
13  * A special Big Thanks also is for all people who donated me cards,
14  * making possible the creation of the original rtl8180 driver
15  * from which this code is derived!
16  *
17  * This program is free software; you can redistribute it and/or modify
18  * it under the terms of the GNU General Public License version 2 as
19  * published by the Free Software Foundation.
20  */
21
22 #include <linux/init.h>
23 #include <linux/pci.h>
24 #include <linux/delay.h>
25 #include <net/mac80211.h>
26
27 #include "rtl8180.h"
28 #include "rtl8180_sa2400.h"
29
30 static const u32 sa2400_chan[] = {
31         0x00096c, /* ch1 */
32         0x080970,
33         0x100974,
34         0x180978,
35         0x000980,
36         0x080984,
37         0x100988,
38         0x18098c,
39         0x000994,
40         0x080998,
41         0x10099c,
42         0x1809a0,
43         0x0009a8,
44         0x0009b4, /* ch 14 */
45 };
46
47 static void write_sa2400(struct ieee80211_hw *dev, u8 addr, u32 data)
48 {
49         struct rtl8180_priv *priv = dev->priv;
50         u32 phy_config;
51
52         /* MAC will bang bits to the sa2400. sw 3-wire is NOT used */
53         phy_config = 0xb0000000;
54
55         phy_config |= ((u32)(addr & 0xf)) << 24;
56         phy_config |= data & 0xffffff;
57
58         rtl818x_iowrite32(priv,
59                 (__le32 __iomem *) &priv->map->RFPinsOutput, phy_config);
60
61         msleep(3);
62 }
63
64 static void sa2400_write_phy_antenna(struct ieee80211_hw *dev, short chan)
65 {
66         struct rtl8180_priv *priv = dev->priv;
67         u8 ant = SA2400_ANTENNA;
68
69         if (priv->rfparam & RF_PARAM_ANTBDEFAULT)
70                 ant |= BB_ANTENNA_B;
71
72         if (chan == 14)
73                 ant |= BB_ANTATTEN_CHAN14;
74
75         rtl8180_write_phy(dev, 0x10, ant);
76
77 }
78
79 static void sa2400_rf_set_channel(struct ieee80211_hw *dev,
80                                   struct ieee80211_conf *conf)
81 {
82         struct rtl8180_priv *priv = dev->priv;
83         u32 txpw = priv->channels[conf->channel - 1].val & 0xFF;
84         u32 chan = sa2400_chan[conf->channel - 1];
85
86         write_sa2400(dev, 7, txpw);
87
88         sa2400_write_phy_antenna(dev, chan);
89
90         write_sa2400(dev, 0, chan);
91         write_sa2400(dev, 1, 0xbb50);
92         write_sa2400(dev, 2, 0x80);
93         write_sa2400(dev, 3, 0);
94 }
95
96 static void sa2400_rf_stop(struct ieee80211_hw *dev)
97 {
98         write_sa2400(dev, 4, 0);
99 }
100
101 static void sa2400_rf_init(struct ieee80211_hw *dev)
102 {
103         struct rtl8180_priv *priv = dev->priv;
104         u32 anaparam, txconf;
105         u8 firdac;
106         int analogphy = priv->rfparam & RF_PARAM_ANALOGPHY;
107
108         anaparam = priv->anaparam;
109         anaparam &= ~(1 << ANAPARAM_TXDACOFF_SHIFT);
110         anaparam &= ~ANAPARAM_PWR1_MASK;
111         anaparam &= ~ANAPARAM_PWR0_MASK;
112
113         if (analogphy) {
114                 anaparam |= SA2400_ANA_ANAPARAM_PWR1_ON << ANAPARAM_PWR1_SHIFT;
115                 firdac = 0;
116         } else {
117                 anaparam |= (SA2400_DIG_ANAPARAM_PWR1_ON << ANAPARAM_PWR1_SHIFT);
118                 anaparam |= (SA2400_ANAPARAM_PWR0_ON << ANAPARAM_PWR0_SHIFT);
119                 firdac = 1 << SA2400_REG4_FIRDAC_SHIFT;
120         }
121
122         rtl8180_set_anaparam(priv, anaparam);
123
124         write_sa2400(dev, 0, sa2400_chan[0]);
125         write_sa2400(dev, 1, 0xbb50);
126         write_sa2400(dev, 2, 0x80);
127         write_sa2400(dev, 3, 0);
128         write_sa2400(dev, 4, 0x19340 | firdac);
129         write_sa2400(dev, 5, 0x1dfb | (SA2400_MAX_SENS - 54) << 15);
130         write_sa2400(dev, 4, 0x19348 | firdac); /* calibrate VCO */
131
132         if (!analogphy)
133                 write_sa2400(dev, 4, 0x1938c); /*???*/
134
135         write_sa2400(dev, 4, 0x19340 | firdac);
136
137         write_sa2400(dev, 0, sa2400_chan[0]);
138         write_sa2400(dev, 1, 0xbb50);
139         write_sa2400(dev, 2, 0x80);
140         write_sa2400(dev, 3, 0);
141         write_sa2400(dev, 4, 0x19344 | firdac); /* calibrate filter */
142
143         /* new from rtl8180 embedded driver (rtl8181 project) */
144         write_sa2400(dev, 6, 0x13ff | (1 << 23)); /* MANRX */
145         write_sa2400(dev, 8, 0); /* VCO */
146
147         if (analogphy) {
148                 rtl8180_set_anaparam(priv, anaparam |
149                                      (1 << ANAPARAM_TXDACOFF_SHIFT));
150
151                 txconf = rtl818x_ioread32(priv, &priv->map->TX_CONF);
152                 rtl818x_iowrite32(priv, &priv->map->TX_CONF,
153                         txconf | RTL818X_TX_CONF_LOOPBACK_CONT);
154
155                 write_sa2400(dev, 4, 0x19341); /* calibrates DC */
156
157                 /* a 5us sleep is required here,
158                  * we rely on the 3ms delay introduced in write_sa2400 */
159                 write_sa2400(dev, 4, 0x19345);
160
161                 /* a 20us sleep is required here,
162                  * we rely on the 3ms delay introduced in write_sa2400 */
163
164                 rtl818x_iowrite32(priv, &priv->map->TX_CONF, txconf);
165
166                 rtl8180_set_anaparam(priv, anaparam);
167         }
168         /* end new code */
169
170         write_sa2400(dev, 4, 0x19341 | firdac); /* RTX MODE */
171
172         /* baseband configuration */
173         rtl8180_write_phy(dev, 0, 0x98);
174         rtl8180_write_phy(dev, 3, 0x38);
175         rtl8180_write_phy(dev, 4, 0xe0);
176         rtl8180_write_phy(dev, 5, 0x90);
177         rtl8180_write_phy(dev, 6, 0x1a);
178         rtl8180_write_phy(dev, 7, 0x64);
179
180         sa2400_write_phy_antenna(dev, 1);
181
182         rtl8180_write_phy(dev, 0x11, 0x80);
183
184         if (rtl818x_ioread8(priv, &priv->map->CONFIG2) &
185             RTL818X_CONFIG2_ANTENNA_DIV)
186                 rtl8180_write_phy(dev, 0x12, 0xc7); /* enable ant diversity */
187         else
188                 rtl8180_write_phy(dev, 0x12, 0x47); /* disable ant diversity */
189
190         rtl8180_write_phy(dev, 0x13, 0x90 | priv->csthreshold);
191
192         rtl8180_write_phy(dev, 0x19, 0x0);
193         rtl8180_write_phy(dev, 0x1a, 0xa0);
194 }
195
196 const struct rtl818x_rf_ops sa2400_rf_ops = {
197         .name           = "Philips",
198         .init           = sa2400_rf_init,
199         .stop           = sa2400_rf_stop,
200         .set_chan       = sa2400_rf_set_channel
201 };