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wl1251: add get_survey callback in order to get channel noise

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Signed-off-by: John W. Linville <linville@tuxdriver.com>
Acked-by: Kalle Valo <kvalo@adurom.com>
This commit is contained in:
John W. Linville 2010-07-28 15:23:30 -04:00
parent a55427e828
commit 19434148d1
3 changed files with 26 additions and 0 deletions
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3
drivers/net/wireless/wl12xx/wl1251.h
View File

@ -381,6 +381,9 @@ struct wl1251 {
u32 chip_id;
char fw_ver[21];
/* Most recently reported noise in dBm */
s8 noise;
};
int wl1251_plt_start(struct wl1251 *wl);

17
drivers/net/wireless/wl12xx/wl1251_main.c
View File

@ -1172,6 +1172,22 @@ out:
return ret;
}
static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx,
struct survey_info *survey)
{
struct wl1251 *wl = hw->priv;
struct ieee80211_conf *conf = &hw->conf;
if (idx != 0)
return -ENOENT;
survey->channel = conf->channel;
survey->filled = SURVEY_INFO_NOISE_DBM;
survey->noise = wl->noise;
return 0;
}
/* can't be const, mac80211 writes to this */
static struct ieee80211_supported_band wl1251_band_2ghz = {
.channels = wl1251_channels,
@ -1193,6 +1209,7 @@ static const struct ieee80211_ops wl1251_ops = {
.bss_info_changed = wl1251_op_bss_info_changed,
.set_rts_threshold = wl1251_op_set_rts_threshold,
.conf_tx = wl1251_op_conf_tx,
.get_survey = wl1251_op_get_survey,
};
static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data)

6
drivers/net/wireless/wl12xx/wl1251_rx.c
View File

@ -74,6 +74,12 @@ static void wl1251_rx_status(struct wl1251 *wl,
status->signal = desc->rssi;
/*
* FIXME: guessing that snr needs to be divided by two, otherwise
* the values don't make any sense
*/
wl->noise = desc->rssi - desc->snr / 2;
status->freq = ieee80211_channel_to_frequency(desc->channel);
status->flag |= RX_FLAG_TSFT;