+int rt2800_get_survey(struct ieee80211_hw *hw, int idx,
+ struct survey_info *survey)
+{
+ struct rt2x00_dev *rt2x00dev = hw->priv;
+ struct ieee80211_conf *conf = &hw->conf;
+ u32 idle, busy, busy_ext;
+
+ if (idx != 0)
+ return -ENOENT;
+
+ survey->channel = conf->channel;
+
+ rt2800_register_read(rt2x00dev, CH_IDLE_STA, &idle);
+ rt2800_register_read(rt2x00dev, CH_BUSY_STA, &busy);
+ rt2800_register_read(rt2x00dev, CH_BUSY_STA_SEC, &busy_ext);
+
+ if (idle || busy) {
+ survey->filled = SURVEY_INFO_CHANNEL_TIME |
+ SURVEY_INFO_CHANNEL_TIME_BUSY |
+ SURVEY_INFO_CHANNEL_TIME_EXT_BUSY;
+
+ survey->channel_time = (idle + busy) / 1000;
+ survey->channel_time_busy = busy / 1000;
+ survey->channel_time_ext_busy = busy_ext / 1000;
+ }
+
+ return 0;
+
+}
+EXPORT_SYMBOL_GPL(rt2800_get_survey);
+