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Diffstat (limited to 'drivers/net/wireless/rtl8180_grf5101.c')
-rw-r--r--drivers/net/wireless/rtl8180_grf5101.c179
1 files changed, 179 insertions, 0 deletions
diff --git a/drivers/net/wireless/rtl8180_grf5101.c b/drivers/net/wireless/rtl8180_grf5101.c
new file mode 100644
index 000000000000..8293e19c4c59
--- /dev/null
+++ b/drivers/net/wireless/rtl8180_grf5101.c
@@ -0,0 +1,179 @@
1
2/*
3 * Radio tuning for GCT GRF5101 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_grf5101.h"
29
30static const int grf5101_encode[] = {
31 0x0, 0x8, 0x4, 0xC,
32 0x2, 0xA, 0x6, 0xE,
33 0x1, 0x9, 0x5, 0xD,
34 0x3, 0xB, 0x7, 0xF
35};
36
37static void write_grf5101(struct ieee80211_hw *dev, u8 addr, u32 data)
38{
39 struct rtl8180_priv *priv = dev->priv;
40 u32 phy_config;
41
42 phy_config = grf5101_encode[(data >> 8) & 0xF];
43 phy_config |= grf5101_encode[(data >> 4) & 0xF] << 4;
44 phy_config |= grf5101_encode[data & 0xF] << 8;
45 phy_config |= grf5101_encode[(addr >> 1) & 0xF] << 12;
46 phy_config |= (addr & 1) << 16;
47 phy_config |= grf5101_encode[(data & 0xf000) >> 12] << 24;
48
49 /* MAC will bang bits to the chip */
50 phy_config |= 0x90000000;
51
52 rtl818x_iowrite32(priv,
53 (__le32 __iomem *) &priv->map->RFPinsOutput, phy_config);
54
55 msleep(3);
56}
57
58static void grf5101_write_phy_antenna(struct ieee80211_hw *dev, short chan)
59{
60 struct rtl8180_priv *priv = dev->priv;
61 u8 ant = GRF5101_ANTENNA;
62
63 if (priv->rfparam & RF_PARAM_ANTBDEFAULT)
64 ant |= BB_ANTENNA_B;
65
66 if (chan == 14)
67 ant |= BB_ANTATTEN_CHAN14;
68
69 rtl8180_write_phy(dev, 0x10, ant);
70}
71
72static void grf5101_rf_set_channel(struct ieee80211_hw *dev,
73 struct ieee80211_conf *conf)
74{
75 struct rtl8180_priv *priv = dev->priv;
76 u32 txpw = priv->channels[conf->channel - 1].val & 0xFF;
77 u32 chan = conf->channel - 1;
78
79 /* set TX power */
80 write_grf5101(dev, 0x15, 0x0);
81 write_grf5101(dev, 0x06, txpw);
82 write_grf5101(dev, 0x15, 0x10);
83 write_grf5101(dev, 0x15, 0x0);
84
85 /* set frequency */
86 write_grf5101(dev, 0x07, 0x0);
87 write_grf5101(dev, 0x0B, chan);
88 write_grf5101(dev, 0x07, 0x1000);
89
90 grf5101_write_phy_antenna(dev, chan);
91}
92
93static void grf5101_rf_stop(struct ieee80211_hw *dev)
94{
95 struct rtl8180_priv *priv = dev->priv;
96 u32 anaparam;
97
98 anaparam = priv->anaparam;
99 anaparam &= 0x000fffff;
100 anaparam |= 0x3f900000;
101 rtl8180_set_anaparam(priv, anaparam);
102
103 write_grf5101(dev, 0x07, 0x0);
104 write_grf5101(dev, 0x1f, 0x45);
105 write_grf5101(dev, 0x1f, 0x5);
106 write_grf5101(dev, 0x00, 0x8e4);
107}
108
109static void grf5101_rf_init(struct ieee80211_hw *dev)
110{
111 struct rtl8180_priv *priv = dev->priv;
112
113 rtl8180_set_anaparam(priv, priv->anaparam);
114
115 write_grf5101(dev, 0x1f, 0x0);
116 write_grf5101(dev, 0x1f, 0x0);
117 write_grf5101(dev, 0x1f, 0x40);
118 write_grf5101(dev, 0x1f, 0x60);
119 write_grf5101(dev, 0x1f, 0x61);
120 write_grf5101(dev, 0x1f, 0x61);
121 write_grf5101(dev, 0x00, 0xae4);
122 write_grf5101(dev, 0x1f, 0x1);
123 write_grf5101(dev, 0x1f, 0x41);
124 write_grf5101(dev, 0x1f, 0x61);
125
126 write_grf5101(dev, 0x01, 0x1a23);
127 write_grf5101(dev, 0x02, 0x4971);
128 write_grf5101(dev, 0x03, 0x41de);
129 write_grf5101(dev, 0x04, 0x2d80);
130 write_grf5101(dev, 0x05, 0x68ff); /* 0x61ff original value */
131 write_grf5101(dev, 0x06, 0x0);
132 write_grf5101(dev, 0x07, 0x0);
133 write_grf5101(dev, 0x08, 0x7533);
134 write_grf5101(dev, 0x09, 0xc401);
135 write_grf5101(dev, 0x0a, 0x0);
136 write_grf5101(dev, 0x0c, 0x1c7);
137 write_grf5101(dev, 0x0d, 0x29d3);
138 write_grf5101(dev, 0x0e, 0x2e8);
139 write_grf5101(dev, 0x10, 0x192);
140 write_grf5101(dev, 0x11, 0x248);
141 write_grf5101(dev, 0x12, 0x0);
142 write_grf5101(dev, 0x13, 0x20c4);
143 write_grf5101(dev, 0x14, 0xf4fc);
144 write_grf5101(dev, 0x15, 0x0);
145 write_grf5101(dev, 0x16, 0x1500);
146
147 write_grf5101(dev, 0x07, 0x1000);
148
149 /* baseband configuration */
150 rtl8180_write_phy(dev, 0, 0xa8);
151 rtl8180_write_phy(dev, 3, 0x0);
152 rtl8180_write_phy(dev, 4, 0xc0);
153 rtl8180_write_phy(dev, 5, 0x90);
154 rtl8180_write_phy(dev, 6, 0x1e);
155 rtl8180_write_phy(dev, 7, 0x64);
156
157 grf5101_write_phy_antenna(dev, 1);
158
159 rtl8180_write_phy(dev, 0x11, 0x88);
160
161 if (rtl818x_ioread8(priv, &priv->map->CONFIG2) &
162 RTL818X_CONFIG2_ANTENNA_DIV)
163 rtl8180_write_phy(dev, 0x12, 0xc0); /* enable ant diversity */
164 else
165 rtl8180_write_phy(dev, 0x12, 0x40); /* disable ant diversity */
166
167 rtl8180_write_phy(dev, 0x13, 0x90 | priv->csthreshold);
168
169 rtl8180_write_phy(dev, 0x19, 0x0);
170 rtl8180_write_phy(dev, 0x1a, 0xa0);
171 rtl8180_write_phy(dev, 0x1b, 0x44);
172}
173
174const struct rtl818x_rf_ops grf5101_rf_ops = {
175 .name = "GCT",
176 .init = grf5101_rf_init,
177 .stop = grf5101_rf_stop,
178 .set_chan = grf5101_rf_set_channel
179};
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-12 23:40:53 -0500