Good day! I use Jorjin WN8020 USB WiFi module with RT3070 chip. On Windows and Os X module have 15dBm output power, but on Linux about 3dBm with 'ifconfig wlan0 txpower 20' and less if txpower set less, than 20dBm. I analyse Ralink driver and found RF_R49/RF_R50 registers present in ralnik code, but abcent in Linux drivers. I try patch code: diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c index 197b446..10683e3 100644 --- a/drivers/net/wireless/rt2x00/rt2800lib.c +++ b/drivers/net/wireless/rt2x00/rt2800lib.c @@ -1670,6 +1670,9 @@ static void rt2800_config_lna_gain(struct rt2x00_dev *rt2x00dev, rt2x00dev->lna_gain = lna_gain; } +#define POWER_BOUND 0x27 +#define FREQ_OFFSET_BOUND 0x5f + static void rt2800_config_channel_rf2xxx(struct rt2x00_dev *rt2x00dev, struct ieee80211_conf *conf, struct rf_channel *rf, @@ -1761,6 +1764,24 @@ static void rt2800_config_channel_rf3xxx(struct rt2x00_dev *rt2x00dev, rt2x00_set_field8(&rfcsr, RFCSR13_TX_POWER, info->default_power2); rt2800_rfcsr_write(rt2x00dev, 13, rfcsr); + /* + * FixMe: Why POWER_BOUND and FREQ_OFFSET_BOUND not init here? + */ + + rt2800_rfcsr_read(rt2x00dev, 49, &rfcsr); + if (info->default_power1 > POWER_BOUND) + rt2x00_set_field8(&rfcsr, RFCSR49_TX, POWER_BOUND); + else + rt2x00_set_field8(&rfcsr, RFCSR49_TX, info->default_power1); + rt2800_rfcsr_write(rt2x00dev, 49, rfcsr); + + rt2800_rfcsr_read(rt2x00dev, 17, &rfcsr); + if (rt2x00dev->freq_offset > FREQ_OFFSET_BOUND) + rt2x00_set_field8(&rfcsr, RFCSR17_CODE, FREQ_OFFSET_BOUND); + else + rt2x00_set_field8(&rfcsr, RFCSR17_CODE, rt2x00dev->freq_offset); + rt2800_rfcsr_write(rt2x00dev, 17, rfcsr); + rt2800_rfcsr_read(rt2x00dev, 1, &rfcsr); rt2x00_set_field8(&rfcsr, RFCSR1_RX0_PD, 0); rt2x00_set_field8(&rfcsr, RFCSR1_RX1_PD, @@ -1988,9 +2009,6 @@ static void rt2800_config_channel_rf3052(struct rt2x00_dev *rt2x00dev, rt2800_rfcsr_write(rt2x00dev, 7, rfcsr); } -#define POWER_BOUND 0x27 -#define FREQ_OFFSET_BOUND 0x5f - static void rt2800_config_channel_rf3290(struct rt2x00_dev *rt2x00dev, struct ieee80211_conf *conf, struct rf_channel *rf, and tx power stay 15dBm (ass writen in WN8020 specification) if txpower set to 20dBm in driver, and about 0dBm if tx power set to 0dBm in driver. I also found function rt2800_config_channel_rf2xxx without initialisation POWER_BOUND and FREQ_OFFSET_BOUND. May be this also incorrect? -- Alex A. Mihaylov AKA MinimumLaw -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
