projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| f6532111 MW |
1 | /* |
| 2 | * Radio tuning for Maxim max2820 on RTL8180 | |
| 3 | * | |
| 4 | * Copyright 2007 Andrea Merello <andreamrl@tiscali.it> | |
| 5 | * | |
| 6 | * Code from the BSD driver and the rtl8181 project have been | |
| 7 | * very useful to understand certain things | |
| 8 | * | |
| 9 | * I want to thanks the Authors of such projects and the Ndiswrapper | |
| 10 | * project Authors. | |
| 11 | * | |
| 12 | * A special Big Thanks also is for all people who donated me cards, | |
| 13 | * making possible the creation of the original rtl8180 driver | |
| 14 | * from which this code is derived! | |
| 15 | * | |
| 16 | * This program is free software; you can redistribute it and/or modify | |
| 17 | * it under the terms of the GNU General Public License version 2 as | |
| 18 | * published by the Free Software Foundation. | |
| 19 | */ | |
| 20 | ||
| 21 | #include <linux/init.h> | |
| 22 | #include <linux/pci.h> | |
| 23 | #include <linux/delay.h> | |
| 24 | #include <net/mac80211.h> | |
| 25 | ||
| 26 | #include "rtl8180.h" | |
| 27 | #include "rtl8180_max2820.h" | |
| 28 | ||
| 29 | static const u32 max2820_chan[] = { | |
| 30 | 12, /* CH 1 */ | |
| 31 | 17, | |
| 32 | 22, | |
| 33 | 27, | |
| 34 | 32, | |
| 35 | 37, | |
| 36 | 42, | |
| 37 | 47, | |
| 38 | 52, | |
| 39 | 57, | |
| 40 | 62, | |
| 41 | 67, | |
| 42 | 72, | |
| 43 | 84, /* CH 14 */ | |
| 44 | }; | |
| 45 | ||
| 46 | static void write_max2820(struct ieee80211_hw *dev, u8 addr, u32 data) | |
| 47 | { | |
| 48 | struct rtl8180_priv *priv = dev->priv; | |
| 49 | u32 phy_config; | |
| 50 | ||
| 51 | phy_config = 0x90 + (data & 0xf); | |
| 52 | phy_config <<= 16; | |
| 53 | phy_config += addr; | |
| 54 | phy_config <<= 8; | |
| 55 | phy_config += (data >> 4) & 0xff; | |
| 56 | ||
| 57 | rtl818x_iowrite32(priv, | |
| 58 | (__le32 __iomem *) &priv->map->RFPinsOutput, phy_config); | |
| 59 | ||
| 60 | msleep(1); | |
| 61 | } | |
| 62 | ||
| 63 | static void max2820_write_phy_antenna(struct ieee80211_hw *dev, short chan) | |
| 64 | { | |
| 65 | struct rtl8180_priv *priv = dev->priv; | |
| 66 | u8 ant; | |
| 67 | ||
| 68 | ant = MAXIM_ANTENNA; | |
| 69 | if (priv->rfparam & RF_PARAM_ANTBDEFAULT) | |
| 70 | ant |= BB_ANTENNA_B; | |
| 71 | if (chan == 14) | |
| 72 | ant |= BB_ANTATTEN_CHAN14; | |
| 73 | ||
| 74 | rtl8180_write_phy(dev, 0x10, ant); | |
| 75 | } | |
| 76 | ||
| 77 | static void max2820_rf_set_channel(struct ieee80211_hw *dev, | |
| 78 | struct ieee80211_conf *conf) | |
| 79 | { | |
| 80 | struct rtl8180_priv *priv = dev->priv; | |
| 6f6c218f JL |
81 | int channel = conf ? |
| 82 | ieee80211_frequency_to_channel(conf->channel->center_freq) : 1; | |
| 8318d78a JB |
83 | unsigned int chan_idx = channel - 1; |
| 84 | u32 txpw = priv->channels[chan_idx].hw_value & 0xFF; | |
| f6532111 MW |
85 | u32 chan = max2820_chan[chan_idx]; |
| 86 | ||
| 87 | /* While philips SA2400 drive the PA bias from | |
| 88 | * sa2400, for MAXIM we do this directly from BB */ | |
| 89 | rtl8180_write_phy(dev, 3, txpw); | |
| 90 | ||
| 0a0ab41e | 91 | max2820_write_phy_antenna(dev, channel); |
| f6532111 MW |
92 | write_max2820(dev, 3, chan); |
| 93 | } | |
| 94 | ||
| 95 | static void max2820_rf_stop(struct ieee80211_hw *dev) | |
| 96 | { | |
| 97 | rtl8180_write_phy(dev, 3, 0x8); | |
| 98 | write_max2820(dev, 1, 0); | |
| 99 | } | |
| 100 | ||
| 101 | ||
| 102 | static void max2820_rf_init(struct ieee80211_hw *dev) | |
| 103 | { | |
| 104 | struct rtl8180_priv *priv = dev->priv; | |
| 105 | ||
| 106 | /* MAXIM from netbsd driver */ | |
| 107 | write_max2820(dev, 0, 0x007); /* test mode as indicated in datasheet */ | |
| 108 | write_max2820(dev, 1, 0x01e); /* enable register */ | |
| 109 | write_max2820(dev, 2, 0x001); /* synt register */ | |
| 110 | ||
| 111 | max2820_rf_set_channel(dev, NULL); | |
| 112 | ||
| 113 | write_max2820(dev, 4, 0x313); /* rx register */ | |
| 114 | ||
| 115 | /* PA is driven directly by the BB, we keep the MAXIM bias | |
| 116 | * at the highest value in case that setting it to lower | |
| 117 | * values may introduce some further attenuation somewhere.. | |
| 118 | */ | |
| 119 | write_max2820(dev, 5, 0x00f); | |
| 120 | ||
| 121 | /* baseband configuration */ | |
| 122 | rtl8180_write_phy(dev, 0, 0x88); /* sys1 */ | |
| 123 | rtl8180_write_phy(dev, 3, 0x08); /* txagc */ | |
| 124 | rtl8180_write_phy(dev, 4, 0xf8); /* lnadet */ | |
| 125 | rtl8180_write_phy(dev, 5, 0x90); /* ifagcinit */ | |
| 126 | rtl8180_write_phy(dev, 6, 0x1a); /* ifagclimit */ | |
| 127 | rtl8180_write_phy(dev, 7, 0x64); /* ifagcdet */ | |
| 128 | ||
| 129 | max2820_write_phy_antenna(dev, 1); | |
| 130 | ||
| 131 | rtl8180_write_phy(dev, 0x11, 0x88); /* trl */ | |
| 132 | ||
| 133 | if (rtl818x_ioread8(priv, &priv->map->CONFIG2) & | |
| 134 | RTL818X_CONFIG2_ANTENNA_DIV) | |
| 135 | rtl8180_write_phy(dev, 0x12, 0xc7); | |
| 136 | else | |
| 137 | rtl8180_write_phy(dev, 0x12, 0x47); | |
| 138 | ||
| 139 | rtl8180_write_phy(dev, 0x13, 0x9b); | |
| 140 | ||
| 141 | rtl8180_write_phy(dev, 0x19, 0x0); /* CHESTLIM */ | |
| 142 | rtl8180_write_phy(dev, 0x1a, 0x9f); /* CHSQLIM */ | |
| 143 | ||
| 144 | max2820_rf_set_channel(dev, NULL); | |
| 145 | } | |
| 146 | ||
| 147 | const struct rtl818x_rf_ops max2820_rf_ops = { | |
| 148 | .name = "Maxim", | |
| 149 | .init = max2820_rf_init, | |
| 150 | .stop = max2820_rf_stop, | |
| 151 | .set_chan = max2820_rf_set_channel | |
| 152 | }; |