rt2x00: Fix max TX power settings
During initialization each driver reads the default TX power for each individual channel. However mac80211 only accepts the maximum value (which is also handled as default value). As a result, the TX power of the device was being limited to the default value, which is often quite low compared to the real maximum acceptable value. This patch allows each driver to set the maximum value on a per-channel basis which is forwarded to mac80211. The default value will be preserved for now, in case we want to update mac80211 to differentiate between the maximum and default txpower. This fixes bug complaining about limited TX power values like: https://bugzilla.kernel.org/show_bug.cgi?id=16358 Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Acked-by: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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@ -1487,8 +1487,10 @@ static int rt2400pci_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
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spec->channels_info = info;
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tx_power = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START);
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for (i = 0; i < 14; i++)
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info[i].tx_power1 = TXPOWER_FROM_DEV(tx_power[i]);
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for (i = 0; i < 14; i++) {
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info[i].max_power = TXPOWER_FROM_DEV(MAX_TXPOWER);
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info[i].default_power1 = TXPOWER_FROM_DEV(tx_power[i]);
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}
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return 0;
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}
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@ -1801,12 +1801,16 @@ static int rt2500pci_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
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spec->channels_info = info;
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tx_power = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START);
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for (i = 0; i < 14; i++)
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info[i].tx_power1 = TXPOWER_FROM_DEV(tx_power[i]);
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for (i = 0; i < 14; i++) {
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info[i].max_power = MAX_TXPOWER;
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info[i].default_power1 = TXPOWER_FROM_DEV(tx_power[i]);
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}
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if (spec->num_channels > 14) {
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for (i = 14; i < spec->num_channels; i++)
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info[i].tx_power1 = DEFAULT_TXPOWER;
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for (i = 14; i < spec->num_channels; i++) {
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info[i].max_power = MAX_TXPOWER;
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info[i].default_power1 = DEFAULT_TXPOWER;
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}
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}
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return 0;
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@ -1706,12 +1706,16 @@ static int rt2500usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
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spec->channels_info = info;
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tx_power = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_START);
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for (i = 0; i < 14; i++)
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info[i].tx_power1 = TXPOWER_FROM_DEV(tx_power[i]);
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for (i = 0; i < 14; i++) {
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info[i].max_power = MAX_TXPOWER;
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info[i].default_power1 = TXPOWER_FROM_DEV(tx_power[i]);
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}
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if (spec->num_channels > 14) {
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for (i = 14; i < spec->num_channels; i++)
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info[i].tx_power1 = DEFAULT_TXPOWER;
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for (i = 14; i < spec->num_channels; i++) {
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info[i].max_power = MAX_TXPOWER;
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info[i].default_power1 = DEFAULT_TXPOWER;
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}
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}
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return 0;
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@ -1858,6 +1858,13 @@ struct mac_iveiv_entry {
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#define EEPROM_RSSI_A2_OFFSET2 FIELD16(0x00ff)
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#define EEPROM_RSSI_A2_LNA_A2 FIELD16(0xff00)
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/*
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* EEPROM Maximum TX power values
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*/
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#define EEPROM_MAX_TX_POWER 0x0027
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#define EEPROM_MAX_TX_POWER_24GHZ FIELD16(0x00ff)
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#define EEPROM_MAX_TX_POWER_5GHZ FIELD16(0xff00)
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/*
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* EEPROM TXpower delta: 20MHZ AND 40 MHZ use different power.
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* This is delta in 40MHZ.
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@ -1239,23 +1239,23 @@ static void rt2800_config_channel_rf2xxx(struct rt2x00_dev *rt2x00dev,
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* double meaning, and we should set a 7DBm boost flag.
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*/
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rt2x00_set_field32(&rf->rf3, RF3_TXPOWER_A_7DBM_BOOST,
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(info->tx_power1 >= 0));
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(info->default_power1 >= 0));
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if (info->tx_power1 < 0)
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info->tx_power1 += 7;
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if (info->default_power1 < 0)
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info->default_power1 += 7;
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rt2x00_set_field32(&rf->rf3, RF3_TXPOWER_A, info->tx_power1);
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rt2x00_set_field32(&rf->rf3, RF3_TXPOWER_A, info->default_power1);
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rt2x00_set_field32(&rf->rf4, RF4_TXPOWER_A_7DBM_BOOST,
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(info->tx_power2 >= 0));
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(info->default_power2 >= 0));
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if (info->tx_power2 < 0)
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info->tx_power2 += 7;
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if (info->default_power2 < 0)
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info->default_power2 += 7;
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rt2x00_set_field32(&rf->rf4, RF4_TXPOWER_A, info->tx_power2);
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rt2x00_set_field32(&rf->rf4, RF4_TXPOWER_A, info->default_power2);
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} else {
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rt2x00_set_field32(&rf->rf3, RF3_TXPOWER_G, info->tx_power1);
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rt2x00_set_field32(&rf->rf4, RF4_TXPOWER_G, info->tx_power2);
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rt2x00_set_field32(&rf->rf3, RF3_TXPOWER_G, info->default_power1);
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rt2x00_set_field32(&rf->rf4, RF4_TXPOWER_G, info->default_power2);
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}
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rt2x00_set_field32(&rf->rf4, RF4_HT40, conf_is_ht40(conf));
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@ -1295,11 +1295,11 @@ static void rt2800_config_channel_rf3xxx(struct rt2x00_dev *rt2x00dev,
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rt2800_rfcsr_write(rt2x00dev, 6, rfcsr);
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rt2800_rfcsr_read(rt2x00dev, 12, &rfcsr);
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rt2x00_set_field8(&rfcsr, RFCSR12_TX_POWER, info->tx_power1);
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rt2x00_set_field8(&rfcsr, RFCSR12_TX_POWER, info->default_power1);
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rt2800_rfcsr_write(rt2x00dev, 12, rfcsr);
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rt2800_rfcsr_read(rt2x00dev, 13, &rfcsr);
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rt2x00_set_field8(&rfcsr, RFCSR13_TX_POWER, info->tx_power2);
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rt2x00_set_field8(&rfcsr, RFCSR13_TX_POWER, info->default_power2);
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rt2800_rfcsr_write(rt2x00dev, 13, rfcsr);
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rt2800_rfcsr_read(rt2x00dev, 23, &rfcsr);
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@ -1324,11 +1324,11 @@ static void rt2800_config_channel(struct rt2x00_dev *rt2x00dev,
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u8 bbp;
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if (rf->channel <= 14) {
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info->tx_power1 = TXPOWER_G_TO_DEV(info->tx_power1);
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info->tx_power2 = TXPOWER_G_TO_DEV(info->tx_power2);
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info->default_power1 = TXPOWER_G_TO_DEV(info->default_power1);
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info->default_power2 = TXPOWER_G_TO_DEV(info->default_power2);
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} else {
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info->tx_power1 = TXPOWER_A_TO_DEV(info->tx_power1);
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info->tx_power2 = TXPOWER_A_TO_DEV(info->tx_power2);
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info->default_power1 = TXPOWER_A_TO_DEV(info->default_power1);
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info->default_power2 = TXPOWER_A_TO_DEV(info->default_power2);
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}
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if (rt2x00_rf(rt2x00dev, RF2020) ||
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@ -2729,6 +2729,13 @@ int rt2800_validate_eeprom(struct rt2x00_dev *rt2x00dev)
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default_lna_gain);
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rt2x00_eeprom_write(rt2x00dev, EEPROM_RSSI_A2, word);
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rt2x00_eeprom_read(rt2x00dev, EEPROM_MAX_TX_POWER, &word);
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if (rt2x00_get_field16(word, EEPROM_MAX_TX_POWER_24GHZ) == 0xff)
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rt2x00_set_field16(&word, EEPROM_MAX_TX_POWER_24GHZ, MAX_G_TXPOWER);
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if (rt2x00_get_field16(word, EEPROM_MAX_TX_POWER_5GHZ) == 0xff)
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rt2x00_set_field16(&word, EEPROM_MAX_TX_POWER_5GHZ, MAX_A_TXPOWER);
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rt2x00_eeprom_write(rt2x00dev, EEPROM_MAX_TX_POWER, word);
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return 0;
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}
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EXPORT_SYMBOL_GPL(rt2800_validate_eeprom);
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@ -2968,9 +2975,10 @@ int rt2800_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
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{
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struct hw_mode_spec *spec = &rt2x00dev->spec;
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struct channel_info *info;
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char *tx_power1;
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char *tx_power2;
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char *default_power1;
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char *default_power2;
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unsigned int i;
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unsigned short max_power;
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u16 eeprom;
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/*
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@ -3084,21 +3092,26 @@ int rt2800_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
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spec->channels_info = info;
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tx_power1 = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_BG1);
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tx_power2 = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_BG2);
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rt2x00_eeprom_read(rt2x00dev, EEPROM_MAX_TX_POWER, &eeprom);
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max_power = rt2x00_get_field16(eeprom, EEPROM_MAX_TX_POWER_24GHZ);
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default_power1 = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_BG1);
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default_power2 = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_BG2);
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for (i = 0; i < 14; i++) {
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info[i].tx_power1 = TXPOWER_G_FROM_DEV(tx_power1[i]);
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info[i].tx_power2 = TXPOWER_G_FROM_DEV(tx_power2[i]);
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info[i].max_power = max_power;
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info[i].default_power1 = TXPOWER_G_FROM_DEV(default_power1[i]);
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info[i].default_power2 = TXPOWER_G_FROM_DEV(default_power2[i]);
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}
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if (spec->num_channels > 14) {
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tx_power1 = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_A1);
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tx_power2 = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_A2);
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max_power = rt2x00_get_field16(eeprom, EEPROM_MAX_TX_POWER_5GHZ);
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default_power1 = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_A1);
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default_power2 = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_A2);
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for (i = 14; i < spec->num_channels; i++) {
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info[i].tx_power1 = TXPOWER_A_FROM_DEV(tx_power1[i]);
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info[i].tx_power2 = TXPOWER_A_FROM_DEV(tx_power2[i]);
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info[i].max_power = max_power;
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info[i].default_power1 = TXPOWER_A_FROM_DEV(default_power1[i]);
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info[i].default_power2 = TXPOWER_A_FROM_DEV(default_power2[i]);
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}
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}
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@ -213,8 +213,9 @@ struct channel_info {
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unsigned int flags;
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#define GEOGRAPHY_ALLOWED 0x00000001
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short tx_power1;
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short tx_power2;
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short max_power;
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short default_power1;
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short default_power2;
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};
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/*
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@ -711,7 +711,7 @@ static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev,
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for (i = 0; i < spec->num_channels; i++) {
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rt2x00lib_channel(&channels[i],
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spec->channels[i].channel,
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spec->channels_info[i].tx_power1, i);
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spec->channels_info[i].max_power, i);
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}
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/*
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@ -2656,13 +2656,17 @@ static int rt61pci_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
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spec->channels_info = info;
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tx_power = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_G_START);
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for (i = 0; i < 14; i++)
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info[i].tx_power1 = TXPOWER_FROM_DEV(tx_power[i]);
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for (i = 0; i < 14; i++) {
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info[i].max_power = MAX_TXPOWER;
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info[i].default_power1 = TXPOWER_FROM_DEV(tx_power[i]);
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}
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if (spec->num_channels > 14) {
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tx_power = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_A_START);
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for (i = 14; i < spec->num_channels; i++)
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info[i].tx_power1 = TXPOWER_FROM_DEV(tx_power[i]);
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for (i = 14; i < spec->num_channels; i++) {
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info[i].max_power = MAX_TXPOWER;
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info[i].default_power1 = TXPOWER_FROM_DEV(tx_power[i]);
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}
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}
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return 0;
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@ -2090,13 +2090,17 @@ static int rt73usb_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
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spec->channels_info = info;
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tx_power = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_G_START);
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for (i = 0; i < 14; i++)
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info[i].tx_power1 = TXPOWER_FROM_DEV(tx_power[i]);
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for (i = 0; i < 14; i++) {
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info[i].max_power = MAX_TXPOWER;
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info[i].default_power1 = TXPOWER_FROM_DEV(tx_power[i]);
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}
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if (spec->num_channels > 14) {
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tx_power = rt2x00_eeprom_addr(rt2x00dev, EEPROM_TXPOWER_A_START);
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for (i = 14; i < spec->num_channels; i++)
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info[i].tx_power1 = TXPOWER_FROM_DEV(tx_power[i]);
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for (i = 14; i < spec->num_channels; i++) {
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info[i].max_power = MAX_TXPOWER;
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info[i].default_power1 = TXPOWER_FROM_DEV(tx_power[i]);
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}
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}
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return 0;
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