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187 lines
4.8 KiB
187 lines
4.8 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Radio tuning for GCT GRF5101 on RTL8180 |
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* |
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* Copyright 2007 Andrea Merello <[email protected]> |
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* |
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* Code from the BSD driver and the rtl8181 project have been |
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* very useful to understand certain things |
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* |
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* I want to thanks the Authors of such projects and the Ndiswrapper |
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* project Authors. |
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* |
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* A special Big Thanks also is for all people who donated me cards, |
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* making possible the creation of the original rtl8180 driver |
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* from which this code is derived! |
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*/ |
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#include <linux/pci.h> |
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#include <linux/delay.h> |
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#include <net/mac80211.h> |
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#include "rtl8180.h" |
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#include "grf5101.h" |
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static const int grf5101_encode[] = { |
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0x0, 0x8, 0x4, 0xC, |
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0x2, 0xA, 0x6, 0xE, |
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0x1, 0x9, 0x5, 0xD, |
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0x3, 0xB, 0x7, 0xF |
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}; |
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static void write_grf5101(struct ieee80211_hw *dev, u8 addr, u32 data) |
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{ |
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struct rtl8180_priv *priv = dev->priv; |
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u32 phy_config; |
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phy_config = grf5101_encode[(data >> 8) & 0xF]; |
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phy_config |= grf5101_encode[(data >> 4) & 0xF] << 4; |
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phy_config |= grf5101_encode[data & 0xF] << 8; |
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phy_config |= grf5101_encode[(addr >> 1) & 0xF] << 12; |
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phy_config |= (addr & 1) << 16; |
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phy_config |= grf5101_encode[(data & 0xf000) >> 12] << 24; |
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/* MAC will bang bits to the chip */ |
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phy_config |= 0x90000000; |
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rtl818x_iowrite32(priv, |
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(__le32 __iomem *) &priv->map->RFPinsOutput, phy_config); |
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msleep(3); |
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} |
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static void grf5101_write_phy_antenna(struct ieee80211_hw *dev, short chan) |
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{ |
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struct rtl8180_priv *priv = dev->priv; |
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u8 ant = GRF5101_ANTENNA; |
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if (priv->rfparam & RF_PARAM_ANTBDEFAULT) |
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ant |= BB_ANTENNA_B; |
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if (chan == 14) |
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ant |= BB_ANTATTEN_CHAN14; |
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rtl8180_write_phy(dev, 0x10, ant); |
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} |
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static u8 grf5101_rf_calc_rssi(u8 agc, u8 sq) |
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{ |
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if (agc > 60) |
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return 65; |
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/* TODO(?): just return agc (or agc + 5) to avoid mult / div */ |
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return 65 * agc / 60; |
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} |
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static void grf5101_rf_set_channel(struct ieee80211_hw *dev, |
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struct ieee80211_conf *conf) |
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{ |
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struct rtl8180_priv *priv = dev->priv; |
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int channel = |
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ieee80211_frequency_to_channel(conf->chandef.chan->center_freq); |
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u32 txpw = priv->channels[channel - 1].hw_value & 0xFF; |
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u32 chan = channel - 1; |
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/* set TX power */ |
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write_grf5101(dev, 0x15, 0x0); |
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write_grf5101(dev, 0x06, txpw); |
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write_grf5101(dev, 0x15, 0x10); |
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write_grf5101(dev, 0x15, 0x0); |
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/* set frequency */ |
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write_grf5101(dev, 0x07, 0x0); |
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write_grf5101(dev, 0x0B, chan); |
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write_grf5101(dev, 0x07, 0x1000); |
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grf5101_write_phy_antenna(dev, channel); |
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} |
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static void grf5101_rf_stop(struct ieee80211_hw *dev) |
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{ |
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struct rtl8180_priv *priv = dev->priv; |
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u32 anaparam; |
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anaparam = priv->anaparam; |
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anaparam &= 0x000fffff; |
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anaparam |= 0x3f900000; |
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rtl8180_set_anaparam(priv, anaparam); |
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write_grf5101(dev, 0x07, 0x0); |
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write_grf5101(dev, 0x1f, 0x45); |
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write_grf5101(dev, 0x1f, 0x5); |
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write_grf5101(dev, 0x00, 0x8e4); |
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} |
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static void grf5101_rf_init(struct ieee80211_hw *dev) |
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{ |
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struct rtl8180_priv *priv = dev->priv; |
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rtl8180_set_anaparam(priv, priv->anaparam); |
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write_grf5101(dev, 0x1f, 0x0); |
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write_grf5101(dev, 0x1f, 0x0); |
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write_grf5101(dev, 0x1f, 0x40); |
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write_grf5101(dev, 0x1f, 0x60); |
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write_grf5101(dev, 0x1f, 0x61); |
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write_grf5101(dev, 0x1f, 0x61); |
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write_grf5101(dev, 0x00, 0xae4); |
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write_grf5101(dev, 0x1f, 0x1); |
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write_grf5101(dev, 0x1f, 0x41); |
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write_grf5101(dev, 0x1f, 0x61); |
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write_grf5101(dev, 0x01, 0x1a23); |
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write_grf5101(dev, 0x02, 0x4971); |
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write_grf5101(dev, 0x03, 0x41de); |
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write_grf5101(dev, 0x04, 0x2d80); |
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write_grf5101(dev, 0x05, 0x68ff); /* 0x61ff original value */ |
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write_grf5101(dev, 0x06, 0x0); |
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write_grf5101(dev, 0x07, 0x0); |
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write_grf5101(dev, 0x08, 0x7533); |
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write_grf5101(dev, 0x09, 0xc401); |
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write_grf5101(dev, 0x0a, 0x0); |
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write_grf5101(dev, 0x0c, 0x1c7); |
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write_grf5101(dev, 0x0d, 0x29d3); |
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write_grf5101(dev, 0x0e, 0x2e8); |
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write_grf5101(dev, 0x10, 0x192); |
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write_grf5101(dev, 0x11, 0x248); |
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write_grf5101(dev, 0x12, 0x0); |
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write_grf5101(dev, 0x13, 0x20c4); |
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write_grf5101(dev, 0x14, 0xf4fc); |
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write_grf5101(dev, 0x15, 0x0); |
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write_grf5101(dev, 0x16, 0x1500); |
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write_grf5101(dev, 0x07, 0x1000); |
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/* baseband configuration */ |
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rtl8180_write_phy(dev, 0, 0xa8); |
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rtl8180_write_phy(dev, 3, 0x0); |
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rtl8180_write_phy(dev, 4, 0xc0); |
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rtl8180_write_phy(dev, 5, 0x90); |
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rtl8180_write_phy(dev, 6, 0x1e); |
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rtl8180_write_phy(dev, 7, 0x64); |
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grf5101_write_phy_antenna(dev, 1); |
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rtl8180_write_phy(dev, 0x11, 0x88); |
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if (rtl818x_ioread8(priv, &priv->map->CONFIG2) & |
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RTL818X_CONFIG2_ANTENNA_DIV) |
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rtl8180_write_phy(dev, 0x12, 0xc0); /* enable ant diversity */ |
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else |
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rtl8180_write_phy(dev, 0x12, 0x40); /* disable ant diversity */ |
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rtl8180_write_phy(dev, 0x13, 0x90 | priv->csthreshold); |
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rtl8180_write_phy(dev, 0x19, 0x0); |
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rtl8180_write_phy(dev, 0x1a, 0xa0); |
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rtl8180_write_phy(dev, 0x1b, 0x44); |
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} |
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const struct rtl818x_rf_ops grf5101_rf_ops = { |
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.name = "GCT", |
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.init = grf5101_rf_init, |
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.stop = grf5101_rf_stop, |
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.set_chan = grf5101_rf_set_channel, |
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.calc_rssi = grf5101_rf_calc_rssi, |
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};
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