From 19434148d16dc231026f37af7c40e81ad9342e75 Mon Sep 17 00:00:00 2001 From: "John W. Linville" Date: Wed, 28 Jul 2010 15:23:30 -0400 Subject: wl1251: add get_survey callback in order to get channel noise Signed-off-by: John W. Linville Acked-by: Kalle Valo --- drivers/net/wireless/wl12xx/wl1251.h | 3 +++ drivers/net/wireless/wl12xx/wl1251_main.c | 17 +++++++++++++++++ drivers/net/wireless/wl12xx/wl1251_rx.c | 6 ++++++ 3 files changed, 26 insertions(+) (limited to 'drivers/net/wireless') diff --git a/drivers/net/wireless/wl12xx/wl1251.h b/drivers/net/wireless/wl12xx/wl1251.h index 4f5f02a26e62..6b942a28e6a5 100644 --- a/drivers/net/wireless/wl12xx/wl1251.h +++ b/drivers/net/wireless/wl12xx/wl1251.h @@ -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); diff --git a/drivers/net/wireless/wl12xx/wl1251_main.c b/drivers/net/wireless/wl12xx/wl1251_main.c index 38f72f417183..a6d8d1ad5dc0 100644 --- a/drivers/net/wireless/wl12xx/wl1251_main.c +++ b/drivers/net/wireless/wl12xx/wl1251_main.c @@ -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) diff --git a/drivers/net/wireless/wl12xx/wl1251_rx.c b/drivers/net/wireless/wl12xx/wl1251_rx.c index 851515836a7f..1b6294b3b996 100644 --- a/drivers/net/wireless/wl12xx/wl1251_rx.c +++ b/drivers/net/wireless/wl12xx/wl1251_rx.c @@ -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; -- cgit v1.2.2