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authorLorenzo Bianconi <lorenzo.bianconi83@gmail.com>2015-02-17 12:12:17 +0300
committerKalle Valo <kvalo@codeaurora.org>2015-03-03 16:36:01 +0300
commit283dd11994cde99447a6dac203d96c0800e85e82 (patch)
treee1d24f454786c9a90a5b84c162fd813af26233f2 /drivers
parentbe1f8d31c93b770347b2cc9e2dd37189baf1177f (diff)
downloadlinux-283dd11994cde99447a6dac203d96c0800e85e82.tar.xz
ath9k: add per-vif TX power capability
Configure the HW with highest TX power among all vif when HW TPC has been enabled in order to add support to per-vif TX power capability. Use lowest configured power among all interfaces when TPC is disabled Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/wireless/ath/ath9k/ath9k.h1
-rw-r--r--drivers/net/wireless/ath/ath9k/debug.c5
-rw-r--r--drivers/net/wireless/ath/ath9k/main.c52
3 files changed, 49 insertions, 9 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index 0f8e9464e4ab..7e89236c0e13 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -645,6 +645,7 @@ void ath9k_calculate_iter_data(struct ath_softc *sc,
struct ath9k_vif_iter_data *iter_data);
void ath9k_calculate_summary_state(struct ath_softc *sc,
struct ath_chanctx *ctx);
+void ath9k_set_txpower(struct ath_softc *sc, struct ieee80211_vif *vif);
/*******************/
/* Beacon Handling */
diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c
index 50a2e0ac3b8b..dbf8f4959642 100644
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -1156,7 +1156,10 @@ static ssize_t write_file_tpc(struct file *file, const char __user *user_buf,
if (tpc_enabled != ah->tpc_enabled) {
ah->tpc_enabled = tpc_enabled;
- ath9k_hw_set_txpowerlimit(ah, sc->cur_chan->txpower, false);
+
+ mutex_lock(&sc->mutex);
+ ath9k_set_txpower(sc, NULL);
+ mutex_unlock(&sc->mutex);
}
return count;
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 9ede991b8d76..40dc582f1f38 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1172,6 +1172,38 @@ void ath9k_calculate_summary_state(struct ath_softc *sc,
ath9k_ps_restore(sc);
}
+static void ath9k_tpc_vif_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
+{
+ int *power = (int *)data;
+
+ if (*power < vif->bss_conf.txpower)
+ *power = vif->bss_conf.txpower;
+}
+
+/* Called with sc->mutex held. */
+void ath9k_set_txpower(struct ath_softc *sc, struct ieee80211_vif *vif)
+{
+ int power;
+ struct ath_hw *ah = sc->sc_ah;
+ struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
+
+ ath9k_ps_wakeup(sc);
+ if (ah->tpc_enabled) {
+ power = (vif) ? vif->bss_conf.txpower : -1;
+ ieee80211_iterate_active_interfaces_atomic(
+ sc->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
+ ath9k_tpc_vif_iter, &power);
+ if (power == -1)
+ power = sc->hw->conf.power_level;
+ } else {
+ power = sc->hw->conf.power_level;
+ }
+ sc->cur_chan->txpower = 2 * power;
+ ath9k_hw_set_txpowerlimit(ah, sc->cur_chan->txpower, false);
+ sc->cur_chan->cur_txpower = reg->max_power_level;
+ ath9k_ps_restore(sc);
+}
+
static void ath9k_assign_hw_queues(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
@@ -1225,6 +1257,8 @@ static int ath9k_add_interface(struct ieee80211_hw *hw,
ath9k_assign_hw_queues(hw, vif);
+ ath9k_set_txpower(sc, vif);
+
an->sc = sc;
an->sta = NULL;
an->vif = vif;
@@ -1265,6 +1299,8 @@ static int ath9k_change_interface(struct ieee80211_hw *hw,
ath9k_assign_hw_queues(hw, vif);
ath9k_calculate_summary_state(sc, avp->chanctx);
+ ath9k_set_txpower(sc, vif);
+
mutex_unlock(&sc->mutex);
return 0;
}
@@ -1294,6 +1330,8 @@ static void ath9k_remove_interface(struct ieee80211_hw *hw,
ath9k_calculate_summary_state(sc, avp->chanctx);
+ ath9k_set_txpower(sc, NULL);
+
mutex_unlock(&sc->mutex);
}
@@ -1397,14 +1435,6 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
ath_chanctx_set_channel(sc, ctx, &hw->conf.chandef);
}
- if (changed & IEEE80211_CONF_CHANGE_POWER) {
- ath_dbg(common, CONFIG, "Set power: %d\n", conf->power_level);
- sc->cur_chan->txpower = 2 * conf->power_level;
- ath9k_cmn_update_txpow(ah, sc->cur_chan->cur_txpower,
- sc->cur_chan->txpower,
- &sc->cur_chan->cur_txpower);
- }
-
mutex_unlock(&sc->mutex);
ath9k_ps_restore(sc);
@@ -1764,6 +1794,12 @@ static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
if (changed & CHECK_ANI)
ath_check_ani(sc);
+ if (changed & BSS_CHANGED_TXPOWER) {
+ ath_dbg(common, CONFIG, "vif %pM power %d dbm power_type %d\n",
+ vif->addr, bss_conf->txpower, bss_conf->txpower_type);
+ ath9k_set_txpower(sc, vif);
+ }
+
mutex_unlock(&sc->mutex);
ath9k_ps_restore(sc);