static void ath9k_reg_notifier(struct wiphy *wiphy,
struct regulatory_request *request)
{
struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
struct ath_softc *sc = hw->priv;
struct ath_hw *ah = sc->sc_ah;
struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
ath_reg_notifier_apply(wiphy, request, reg);
/* synchronize DFS detector if regulatory domain changed */
if (sc->dfs_detector != NULL)
sc->dfs_detector->set_dfs_domain(sc->dfs_detector,
request->dfs_region);
/* Set tx power */
if (!ah->curchan)
return;
sc->cur_chan->txpower = 2 * ah->curchan->chan->max_power;
ath9k_ps_wakeup(sc);
ath9k_hw_set_txpowerlimit(ah, sc->cur_chan->txpower, false);
ath9k_cmn_update_txpow(ah, sc->cur_chan->cur_txpower,
sc->cur_chan->txpower,
&sc->cur_chan->cur_txpower);
ath9k_ps_restore(sc);
}
void ath9k_htc_reset(struct ath9k_htc_priv *priv)
{
struct ath_hw *ah = priv->ah;
struct ath_common *common = ath9k_hw_common(ah);
struct ieee80211_channel *channel = priv->hw->conf.chandef.chan;
struct ath9k_hw_cal_data *caldata = NULL;
enum htc_phymode mode;
__be16 htc_mode;
u8 cmd_rsp;
int ret;
mutex_lock(&priv->mutex);
ath9k_htc_ps_wakeup(priv);
ath9k_htc_stop_ani(priv);
ieee80211_stop_queues(priv->hw);
del_timer_sync(&priv->tx.cleanup_timer);
ath9k_htc_tx_drain(priv);
WMI_CMD(WMI_DISABLE_INTR_CMDID);
WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
WMI_CMD(WMI_STOP_RECV_CMDID);
ath9k_wmi_event_drain(priv);
caldata = &priv->caldata;
ret = ath9k_hw_reset(ah, ah->curchan, caldata, false);
if (ret) {
ath_err(common,
"Unable to reset device (%u Mhz) reset status %d\n",
channel->center_freq, ret);
}
ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit,
&priv->curtxpow);
WMI_CMD(WMI_START_RECV_CMDID);
ath9k_host_rx_init(priv);
mode = ath9k_htc_get_curmode(priv, ah->curchan);
htc_mode = cpu_to_be16(mode);
WMI_CMD_BUF(WMI_SET_MODE_CMDID, &htc_mode);
WMI_CMD(WMI_ENABLE_INTR_CMDID);
htc_start(priv->htc);
ath9k_htc_vif_reconfig(priv);
ieee80211_wake_queues(priv->hw);
mod_timer(&priv->tx.cleanup_timer,
jiffies + msecs_to_jiffies(ATH9K_HTC_TX_CLEANUP_INTERVAL));
ath9k_htc_ps_restore(priv);
mutex_unlock(&priv->mutex);
}
void ath9k_htc_reset(struct ath9k_htc_priv *priv)
{
struct ath_hw *ah = priv->ah;
struct ath_common *common = ath9k_hw_common(ah);
struct ieee80211_channel *channel = priv->hw->conf.channel;
struct ath9k_hw_cal_data *caldata = NULL;
enum htc_phymode mode;
__be16 htc_mode;
u8 cmd_rsp;
int ret;
mutex_lock(&priv->mutex);
ath9k_htc_ps_wakeup(priv);
if (priv->op_flags & OP_ASSOCIATED)
cancel_delayed_work_sync(&priv->ath9k_ani_work);
ieee80211_stop_queues(priv->hw);
htc_stop(priv->htc);
WMI_CMD(WMI_DISABLE_INTR_CMDID);
WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
WMI_CMD(WMI_STOP_RECV_CMDID);
caldata = &priv->caldata;
ret = ath9k_hw_reset(ah, ah->curchan, caldata, false);
if (ret) {
ath_err(common,
"Unable to reset device (%u Mhz) reset status %d\n",
channel->center_freq, ret);
}
ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit,
&priv->curtxpow);
WMI_CMD(WMI_START_RECV_CMDID);
ath9k_host_rx_init(priv);
mode = ath9k_htc_get_curmode(priv, ah->curchan);
htc_mode = cpu_to_be16(mode);
WMI_CMD_BUF(WMI_SET_MODE_CMDID, &htc_mode);
WMI_CMD(WMI_ENABLE_INTR_CMDID);
htc_start(priv->htc);
if (priv->op_flags & OP_ASSOCIATED) {
ath9k_htc_beacon_config(priv, priv->vif);
ath_start_ani(priv);
}
ieee80211_wake_queues(priv->hw);
ath9k_htc_ps_restore(priv);
mutex_unlock(&priv->mutex);
}
static void ath_radio_enable(struct ath_softc *sc, struct ieee80211_hw *hw)
{
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
struct ieee80211_channel *channel = hw->conf.channel;
int r;
ath9k_ps_wakeup(sc);
spin_lock_bh(&sc->sc_pcu_lock);
ath9k_hw_configpcipowersave(ah, 0, 0);
if (!ah->curchan)
ah->curchan = ath9k_cmn_get_curchannel(sc->hw, ah);
r = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
if (r) {
ath_err(common,
"Unable to reset channel (%u MHz), reset status %d\n",
channel->center_freq, r);
}
ath9k_cmn_update_txpow(ah, sc->curtxpow,
sc->config.txpowlimit, &sc->curtxpow);
if (ath_startrecv(sc) != 0) {
ath_err(common, "Unable to restart recv logic\n");
goto out;
}
if (sc->sc_flags & SC_OP_BEACONS)
ath_set_beacon(sc); /* restart beacons */
/* Re-Enable interrupts */
ath9k_hw_set_interrupts(ah, ah->imask);
/* Enable LED */
ath9k_hw_cfg_output(ah, ah->led_pin,
AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
ath9k_hw_set_gpio(ah, ah->led_pin, 0);
ieee80211_wake_queues(hw);
ieee80211_queue_delayed_work(hw, &sc->hw_pll_work, HZ/2);
out:
spin_unlock_bh(&sc->sc_pcu_lock);
ath9k_ps_restore(sc);
}
void ath9k_htc_radio_enable(struct ieee80211_hw *hw)
{
struct ath9k_htc_priv *priv = hw->priv;
struct ath_hw *ah = priv->ah;
struct ath_common *common = ath9k_hw_common(ah);
int ret;
u8 cmd_rsp;
if (!ah->curchan)
ah->curchan = ath9k_cmn_get_curchannel(hw, ah);
/* Reset the HW */
ret = ath9k_hw_reset(ah, ah->curchan, ah->caldata, false);
if (ret) {
ath_err(common,
"Unable to reset hardware; reset status %d (freq %u MHz)\n",
ret, ah->curchan->channel);
}
ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit,
&priv->curtxpow);
/* Start RX */
WMI_CMD(WMI_START_RECV_CMDID);
ath9k_host_rx_init(priv);
/* Start TX */
htc_start(priv->htc);
spin_lock_bh(&priv->tx.tx_lock);
priv->tx.flags &= ~ATH9K_HTC_OP_TX_QUEUES_STOP;
spin_unlock_bh(&priv->tx.tx_lock);
ieee80211_wake_queues(hw);
WMI_CMD(WMI_ENABLE_INTR_CMDID);
/* Enable LED */
ath9k_hw_cfg_output(ah, ah->led_pin,
AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
ath9k_hw_set_gpio(ah, ah->led_pin, 0);
}
static int ath9k_htc_start(struct ieee80211_hw *hw)
{
struct ath9k_htc_priv *priv = hw->priv;
struct ath_hw *ah = priv->ah;
struct ath_common *common = ath9k_hw_common(ah);
struct ieee80211_channel *curchan = hw->conf.chandef.chan;
struct ath9k_channel *init_channel;
int ret = 0;
enum htc_phymode mode;
__be16 htc_mode;
u8 cmd_rsp;
mutex_lock(&priv->mutex);
ath_dbg(common, CONFIG,
"Starting driver with initial channel: %d MHz\n",
curchan->center_freq);
/* Ensure that HW is awake before flushing RX */
ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
WMI_CMD(WMI_FLUSH_RECV_CMDID);
/* setup initial channel */
init_channel = ath9k_cmn_get_channel(hw, ah, &hw->conf.chandef);
ret = ath9k_hw_reset(ah, init_channel, ah->caldata, false);
if (ret) {
ath_err(common,
"Unable to reset hardware; reset status %d (freq %u MHz)\n",
ret, curchan->center_freq);
mutex_unlock(&priv->mutex);
return ret;
}
ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit,
&priv->curtxpow);
mode = ath9k_htc_get_curmode(priv, init_channel);
htc_mode = cpu_to_be16(mode);
WMI_CMD_BUF(WMI_SET_MODE_CMDID, &htc_mode);
WMI_CMD(WMI_ATH_INIT_CMDID);
WMI_CMD(WMI_START_RECV_CMDID);
ath9k_host_rx_init(priv);
ret = ath9k_htc_update_cap_target(priv, 0);
if (ret)
ath_dbg(common, CONFIG,
"Failed to update capability in target\n");
clear_bit(ATH_OP_INVALID, &common->op_flags);
htc_start(priv->htc);
spin_lock_bh(&priv->tx.tx_lock);
priv->tx.flags &= ~ATH9K_HTC_OP_TX_QUEUES_STOP;
spin_unlock_bh(&priv->tx.tx_lock);
ieee80211_wake_queues(hw);
mod_timer(&priv->tx.cleanup_timer,
jiffies + msecs_to_jiffies(ATH9K_HTC_TX_CLEANUP_INTERVAL));
ath9k_htc_start_btcoex(priv);
mutex_unlock(&priv->mutex);
return ret;
}
static int ath9k_htc_set_channel(struct ath9k_htc_priv *priv,
struct ieee80211_hw *hw,
struct ath9k_channel *hchan)
{
struct ath_hw *ah = priv->ah;
struct ath_common *common = ath9k_hw_common(ah);
struct ieee80211_conf *conf = &common->hw->conf;
bool fastcc;
struct ieee80211_channel *channel = hw->conf.chandef.chan;
struct ath9k_hw_cal_data *caldata = NULL;
enum htc_phymode mode;
__be16 htc_mode;
u8 cmd_rsp;
int ret;
if (test_bit(ATH_OP_INVALID, &common->op_flags))
return -EIO;
fastcc = !!(hw->conf.flags & IEEE80211_CONF_OFFCHANNEL);
ath9k_htc_ps_wakeup(priv);
ath9k_htc_stop_ani(priv);
del_timer_sync(&priv->tx.cleanup_timer);
ath9k_htc_tx_drain(priv);
WMI_CMD(WMI_DISABLE_INTR_CMDID);
WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
WMI_CMD(WMI_STOP_RECV_CMDID);
ath9k_wmi_event_drain(priv);
ath_dbg(common, CONFIG,
"(%u MHz) -> (%u MHz), HT: %d, HT40: %d fastcc: %d\n",
priv->ah->curchan->channel,
channel->center_freq, conf_is_ht(conf), conf_is_ht40(conf),
fastcc);
if (!fastcc)
caldata = &priv->caldata;
ret = ath9k_hw_reset(ah, hchan, caldata, fastcc);
if (ret) {
ath_err(common,
"Unable to reset channel (%u Mhz) reset status %d\n",
channel->center_freq, ret);
goto err;
}
ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit,
&priv->curtxpow);
WMI_CMD(WMI_START_RECV_CMDID);
if (ret)
goto err;
ath9k_host_rx_init(priv);
mode = ath9k_htc_get_curmode(priv, hchan);
htc_mode = cpu_to_be16(mode);
WMI_CMD_BUF(WMI_SET_MODE_CMDID, &htc_mode);
if (ret)
goto err;
WMI_CMD(WMI_ENABLE_INTR_CMDID);
if (ret)
goto err;
htc_start(priv->htc);
if (!test_bit(ATH_OP_SCANNING, &common->op_flags) &&
!(hw->conf.flags & IEEE80211_CONF_OFFCHANNEL))
ath9k_htc_vif_reconfig(priv);
mod_timer(&priv->tx.cleanup_timer,
jiffies + msecs_to_jiffies(ATH9K_HTC_TX_CLEANUP_INTERVAL));
err:
ath9k_htc_ps_restore(priv);
return ret;
}
static int ath9k_htc_config(struct ieee80211_hw *hw, u32 changed)
{
struct ath9k_htc_priv *priv = hw->priv;
struct ath_common *common = ath9k_hw_common(priv->ah);
struct ieee80211_conf *conf = &hw->conf;
bool chip_reset = false;
int ret = 0;
mutex_lock(&priv->mutex);
ath9k_htc_ps_wakeup(priv);
if (changed & IEEE80211_CONF_CHANGE_IDLE) {
mutex_lock(&priv->htc_pm_lock);
priv->ps_idle = !!(conf->flags & IEEE80211_CONF_IDLE);
if (!priv->ps_idle)
chip_reset = true;
mutex_unlock(&priv->htc_pm_lock);
}
/*
* Monitor interface should be added before
* IEEE80211_CONF_CHANGE_CHANNEL is handled.
*/
if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
if ((conf->flags & IEEE80211_CONF_MONITOR) &&
!priv->ah->is_monitoring)
ath9k_htc_add_monitor_interface(priv);
else if (priv->ah->is_monitoring)
ath9k_htc_remove_monitor_interface(priv);
}
if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) || chip_reset) {
struct ieee80211_channel *curchan = hw->conf.chandef.chan;
int pos = curchan->hw_value;
ath_dbg(common, CONFIG, "Set channel: %d MHz\n",
curchan->center_freq);
ath9k_cmn_get_channel(hw, priv->ah, &hw->conf.chandef);
if (ath9k_htc_set_channel(priv, hw, &priv->ah->channels[pos]) < 0) {
ath_err(common, "Unable to set channel\n");
ret = -EINVAL;
goto out;
}
}
if (changed & IEEE80211_CONF_CHANGE_PS) {
if (conf->flags & IEEE80211_CONF_PS) {
ath9k_htc_setpower(priv, ATH9K_PM_NETWORK_SLEEP);
priv->ps_enabled = true;
} else {
priv->ps_enabled = false;
cancel_work_sync(&priv->ps_work);
ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
}
}
if (changed & IEEE80211_CONF_CHANGE_POWER) {
priv->txpowlimit = 2 * conf->power_level;
ath9k_cmn_update_txpow(priv->ah, priv->curtxpow,
priv->txpowlimit, &priv->curtxpow);
}
out:
ath9k_htc_ps_restore(priv);
mutex_unlock(&priv->mutex);
return ret;
}
/*
* Set/change channels. If the channel is really being changed, it's done
* by reseting the chip. To accomplish this we must first cleanup any pending
* DMA, then restart stuff.
*/
static int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
struct ath9k_channel *hchan)
{
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
struct ieee80211_conf *conf = &common->hw->conf;
bool fastcc = true, stopped;
struct ieee80211_channel *channel = hw->conf.channel;
struct ath9k_hw_cal_data *caldata = NULL;
int r;
if (sc->sc_flags & SC_OP_INVALID)
return -EIO;
sc->hw_busy_count = 0;
del_timer_sync(&common->ani.timer);
cancel_work_sync(&sc->paprd_work);
cancel_work_sync(&sc->hw_check_work);
cancel_delayed_work_sync(&sc->tx_complete_work);
cancel_delayed_work_sync(&sc->hw_pll_work);
ath9k_ps_wakeup(sc);
spin_lock_bh(&sc->sc_pcu_lock);
/*
* This is only performed if the channel settings have
* actually changed.
*
* To switch channels clear any pending DMA operations;
* wait long enough for the RX fifo to drain, reset the
* hardware at the new frequency, and then re-enable
* the relevant bits of the h/w.
*/
ath9k_hw_disable_interrupts(ah);
stopped = ath_drain_all_txq(sc, false);
if (!ath_stoprecv(sc))
stopped = false;
if (!ath9k_hw_check_alive(ah))
stopped = false;
/* XXX: do not flush receive queue here. We don't want
* to flush data frames already in queue because of
* changing channel. */
if (!stopped || !(sc->sc_flags & SC_OP_OFFCHANNEL))
fastcc = false;
if (!(sc->sc_flags & SC_OP_OFFCHANNEL))
caldata = &sc->caldata;
ath_dbg(common, ATH_DBG_CONFIG,
"(%u MHz) -> (%u MHz), conf_is_ht40: %d fastcc: %d\n",
sc->sc_ah->curchan->channel,
channel->center_freq, conf_is_ht40(conf),
fastcc);
r = ath9k_hw_reset(ah, hchan, caldata, fastcc);
if (r) {
ath_err(common,
"Unable to reset channel (%u MHz), reset status %d\n",
channel->center_freq, r);
goto ps_restore;
}
if (ath_startrecv(sc) != 0) {
ath_err(common, "Unable to restart recv logic\n");
r = -EIO;
goto ps_restore;
}
ath9k_cmn_update_txpow(ah, sc->curtxpow,
sc->config.txpowlimit, &sc->curtxpow);
ath9k_hw_set_interrupts(ah, ah->imask);
if (!(sc->sc_flags & (SC_OP_OFFCHANNEL))) {
if (sc->sc_flags & SC_OP_BEACONS)
ath_set_beacon(sc);
ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0);
ieee80211_queue_delayed_work(sc->hw, &sc->hw_pll_work, HZ/2);
if (!common->disable_ani)
ath_start_ani(common);
}
ps_restore:
ieee80211_wake_queues(hw);
spin_unlock_bh(&sc->sc_pcu_lock);
ath9k_ps_restore(sc);
return r;
}
static int ath9k_htc_config(struct ieee80211_hw *hw, u32 changed)
{
struct ath9k_htc_priv *priv = hw->priv;
struct ath_common *common = ath9k_hw_common(priv->ah);
struct ieee80211_conf *conf = &hw->conf;
mutex_lock(&priv->mutex);
if (changed & IEEE80211_CONF_CHANGE_IDLE) {
bool enable_radio = false;
bool idle = !!(conf->flags & IEEE80211_CONF_IDLE);
mutex_lock(&priv->htc_pm_lock);
if (!idle && priv->ps_idle)
enable_radio = true;
priv->ps_idle = idle;
mutex_unlock(&priv->htc_pm_lock);
if (enable_radio) {
ath_dbg(common, CONFIG, "not-idle: enabling radio\n");
ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
ath9k_htc_radio_enable(hw);
}
}
/*
* Monitor interface should be added before
* IEEE80211_CONF_CHANGE_CHANNEL is handled.
*/
if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
if ((conf->flags & IEEE80211_CONF_MONITOR) &&
!priv->ah->is_monitoring)
ath9k_htc_add_monitor_interface(priv);
else if (priv->ah->is_monitoring)
ath9k_htc_remove_monitor_interface(priv);
}
if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
struct ieee80211_channel *curchan = hw->conf.channel;
int pos = curchan->hw_value;
ath_dbg(common, CONFIG, "Set channel: %d MHz\n",
curchan->center_freq);
ath9k_cmn_update_ichannel(&priv->ah->channels[pos],
hw->conf.channel,
hw->conf.channel_type);
if (ath9k_htc_set_channel(priv, hw, &priv->ah->channels[pos]) < 0) {
ath_err(common, "Unable to set channel\n");
mutex_unlock(&priv->mutex);
return -EINVAL;
}
}
if (changed & IEEE80211_CONF_CHANGE_PS) {
if (conf->flags & IEEE80211_CONF_PS) {
ath9k_htc_setpower(priv, ATH9K_PM_NETWORK_SLEEP);
priv->ps_enabled = true;
} else {
priv->ps_enabled = false;
cancel_work_sync(&priv->ps_work);
ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
}
}
if (changed & IEEE80211_CONF_CHANGE_POWER) {
priv->txpowlimit = 2 * conf->power_level;
ath9k_cmn_update_txpow(priv->ah, priv->curtxpow,
priv->txpowlimit, &priv->curtxpow);
}
if (changed & IEEE80211_CONF_CHANGE_IDLE) {
mutex_lock(&priv->htc_pm_lock);
if (!priv->ps_idle) {
mutex_unlock(&priv->htc_pm_lock);
goto out;
}
mutex_unlock(&priv->htc_pm_lock);
ath_dbg(common, CONFIG, "idle: disabling radio\n");
ath9k_htc_radio_disable(hw);
}
out:
mutex_unlock(&priv->mutex);
return 0;
}
static int ath9k_htc_start(struct ieee80211_hw *hw)
{
struct ath9k_htc_priv *priv = hw->priv;
struct ath_hw *ah = priv->ah;
struct ath_common *common = ath9k_hw_common(ah);
struct ieee80211_channel *curchan = hw->conf.channel;
struct ath9k_channel *init_channel;
int ret = 0;
enum htc_phymode mode;
__be16 htc_mode;
u8 cmd_rsp;
mutex_lock(&priv->mutex);
ath_dbg(common, ATH_DBG_CONFIG,
"Starting driver with initial channel: %d MHz\n",
curchan->center_freq);
/* Ensure that HW is awake before flushing RX */
ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
WMI_CMD(WMI_FLUSH_RECV_CMDID);
/* setup initial channel */
init_channel = ath9k_cmn_get_curchannel(hw, ah);
ath9k_hw_htc_resetinit(ah);
ret = ath9k_hw_reset(ah, init_channel, ah->caldata, false);
if (ret) {
ath_err(common,
"Unable to reset hardware; reset status %d (freq %u MHz)\n",
ret, curchan->center_freq);
mutex_unlock(&priv->mutex);
return ret;
}
ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit,
&priv->curtxpow);
mode = ath9k_htc_get_curmode(priv, init_channel);
htc_mode = cpu_to_be16(mode);
WMI_CMD_BUF(WMI_SET_MODE_CMDID, &htc_mode);
WMI_CMD(WMI_ATH_INIT_CMDID);
WMI_CMD(WMI_START_RECV_CMDID);
ath9k_host_rx_init(priv);
priv->op_flags &= ~OP_INVALID;
htc_start(priv->htc);
spin_lock_bh(&priv->tx_lock);
priv->tx_queues_stop = false;
spin_unlock_bh(&priv->tx_lock);
ieee80211_wake_queues(hw);
if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE) {
ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
AR_STOMP_LOW_WLAN_WGHT);
ath9k_hw_btcoex_enable(ah);
ath_htc_resume_btcoex_work(priv);
}
mutex_unlock(&priv->mutex);
return ret;
}
static int ath9k_htc_set_channel(struct ath9k_htc_priv *priv,
struct ieee80211_hw *hw,
struct ath9k_channel *hchan)
{
struct ath_hw *ah = priv->ah;
struct ath_common *common = ath9k_hw_common(ah);
struct ieee80211_conf *conf = &common->hw->conf;
bool fastcc;
struct ieee80211_channel *channel = hw->conf.channel;
struct ath9k_hw_cal_data *caldata;
enum htc_phymode mode;
__be16 htc_mode;
u8 cmd_rsp;
int ret;
if (priv->op_flags & OP_INVALID)
return -EIO;
fastcc = !!(hw->conf.flags & IEEE80211_CONF_OFFCHANNEL);
ath9k_htc_ps_wakeup(priv);
htc_stop(priv->htc);
WMI_CMD(WMI_DISABLE_INTR_CMDID);
WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
WMI_CMD(WMI_STOP_RECV_CMDID);
ath_dbg(common, ATH_DBG_CONFIG,
"(%u MHz) -> (%u MHz), HT: %d, HT40: %d fastcc: %d\n",
priv->ah->curchan->channel,
channel->center_freq, conf_is_ht(conf), conf_is_ht40(conf),
fastcc);
if (!fastcc)
caldata = &priv->caldata;
ret = ath9k_hw_reset(ah, hchan, caldata, fastcc);
if (ret) {
ath_err(common,
"Unable to reset channel (%u Mhz) reset status %d\n",
channel->center_freq, ret);
goto err;
}
ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit,
&priv->curtxpow);
WMI_CMD(WMI_START_RECV_CMDID);
if (ret)
goto err;
ath9k_host_rx_init(priv);
mode = ath9k_htc_get_curmode(priv, hchan);
htc_mode = cpu_to_be16(mode);
WMI_CMD_BUF(WMI_SET_MODE_CMDID, &htc_mode);
if (ret)
goto err;
WMI_CMD(WMI_ENABLE_INTR_CMDID);
if (ret)
goto err;
htc_start(priv->htc);
err:
ath9k_htc_ps_restore(priv);
return ret;
}