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https://github.com/torvalds/linux
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8318d78a44
This patch creates new cfg80211 wiphy API for channel and bitrate registration and converts mac80211 and drivers to the new API. The old mac80211 API is completely ripped out. All drivers (except ath5k) are updated to the new API, in many cases I expect that optimisations can be done. Along with the regulatory code I've also ripped out the IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED flag, I believe it to be unnecessary if the hardware simply gives us whatever channels it wants to support and we then enable/disable them as required, which is pretty much required for travelling. Additionally, the patch adds proper "basic" rate handling for STA mode interface, AP mode interface will have to have new API added to allow userspace to set the basic rate set, currently it'll be empty... However, the basic rate handling will need to be moved to the BSS conf stuff. I do expect there to be bugs in this, especially wrt. transmit power handling where I'm basically clueless about how it should work. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
151 lines
3.7 KiB
C
151 lines
3.7 KiB
C
/*
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* Radio tuning for Maxim max2820 on RTL8180
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*
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* Copyright 2007 Andrea Merello <andreamrl@tiscali.it>
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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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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/init.h>
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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 "rtl8180_max2820.h"
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static const u32 max2820_chan[] = {
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12, /* CH 1 */
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17,
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22,
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27,
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32,
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37,
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42,
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47,
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52,
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57,
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62,
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67,
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72,
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84, /* CH 14 */
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};
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static void write_max2820(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 = 0x90 + (data & 0xf);
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phy_config <<= 16;
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phy_config += addr;
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phy_config <<= 8;
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phy_config += (data >> 4) & 0xff;
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rtl818x_iowrite32(priv,
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(__le32 __iomem *) &priv->map->RFPinsOutput, phy_config);
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msleep(1);
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}
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static void max2820_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;
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ant = MAXIM_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 void max2820_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 = ieee80211_frequency_to_channel(conf->channel->center_freq);
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unsigned int chan_idx = channel - 1;
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u32 txpw = priv->channels[chan_idx].hw_value & 0xFF;
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u32 chan = max2820_chan[chan_idx];
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/* While philips SA2400 drive the PA bias from
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* sa2400, for MAXIM we do this directly from BB */
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rtl8180_write_phy(dev, 3, txpw);
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max2820_write_phy_antenna(dev, chan);
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write_max2820(dev, 3, chan);
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}
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static void max2820_rf_stop(struct ieee80211_hw *dev)
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{
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rtl8180_write_phy(dev, 3, 0x8);
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write_max2820(dev, 1, 0);
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}
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static void max2820_rf_init(struct ieee80211_hw *dev)
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{
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struct rtl8180_priv *priv = dev->priv;
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/* MAXIM from netbsd driver */
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write_max2820(dev, 0, 0x007); /* test mode as indicated in datasheet */
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write_max2820(dev, 1, 0x01e); /* enable register */
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write_max2820(dev, 2, 0x001); /* synt register */
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max2820_rf_set_channel(dev, NULL);
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write_max2820(dev, 4, 0x313); /* rx register */
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/* PA is driven directly by the BB, we keep the MAXIM bias
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* at the highest value in case that setting it to lower
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* values may introduce some further attenuation somewhere..
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*/
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write_max2820(dev, 5, 0x00f);
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/* baseband configuration */
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rtl8180_write_phy(dev, 0, 0x88); /* sys1 */
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rtl8180_write_phy(dev, 3, 0x08); /* txagc */
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rtl8180_write_phy(dev, 4, 0xf8); /* lnadet */
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rtl8180_write_phy(dev, 5, 0x90); /* ifagcinit */
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rtl8180_write_phy(dev, 6, 0x1a); /* ifagclimit */
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rtl8180_write_phy(dev, 7, 0x64); /* ifagcdet */
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max2820_write_phy_antenna(dev, 1);
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rtl8180_write_phy(dev, 0x11, 0x88); /* trl */
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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, 0xc7);
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else
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rtl8180_write_phy(dev, 0x12, 0x47);
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rtl8180_write_phy(dev, 0x13, 0x9b);
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rtl8180_write_phy(dev, 0x19, 0x0); /* CHESTLIM */
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rtl8180_write_phy(dev, 0x1a, 0x9f); /* CHSQLIM */
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max2820_rf_set_channel(dev, NULL);
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}
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const struct rtl818x_rf_ops max2820_rf_ops = {
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.name = "Maxim",
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.init = max2820_rf_init,
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.stop = max2820_rf_stop,
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.set_chan = max2820_rf_set_channel
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};
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