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ath9k_htc: Add support for power save. 

Signed-off-by: Vivek Natarajan <vnatarajan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Vivek Natarajan 2010-04-05 14:48:05 +05:30 committed by John W. Linville
parent 53bc7aa08b
commit bde748a40d
5 changed files with 117 additions and 6 deletions
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9
drivers/net/wireless/ath/ath9k/htc.h
View File

@ -363,6 +363,11 @@ struct ath9k_htc_priv {
struct ath9k_htc_aggr_work aggr_work;
struct delayed_work ath9k_aggr_work;
struct delayed_work ath9k_ani_work;
struct work_struct ps_work;
struct mutex htc_pm_lock;
unsigned long ps_usecount;
bool ps_enabled;
struct ath_led radio_led;
struct ath_led assoc_led;
@ -420,6 +425,10 @@ void ath9k_host_rx_init(struct ath9k_htc_priv *priv);
void ath9k_rx_tasklet(unsigned long data);
u32 ath9k_htc_calcrxfilter(struct ath9k_htc_priv *priv);
void ath9k_htc_ps_wakeup(struct ath9k_htc_priv *priv);
void ath9k_htc_ps_restore(struct ath9k_htc_priv *priv);
void ath9k_ps_work(struct work_struct *work);
void ath9k_start_rfkill_poll(struct ath9k_htc_priv *priv);
void ath9k_init_leds(struct ath9k_htc_priv *priv);
void ath9k_deinit_leds(struct ath9k_htc_priv *priv);

8
drivers/net/wireless/ath/ath9k/htc_drv_init.c
View File

@ -454,6 +454,7 @@ static int ath9k_init_priv(struct ath9k_htc_priv *priv, u16 devid)
spin_lock_init(&priv->tx_lock);
mutex_init(&priv->mutex);
mutex_init(&priv->aggr_work.mutex);
mutex_init(&priv->htc_pm_lock);
tasklet_init(&priv->wmi_tasklet, ath9k_wmi_tasklet,
(unsigned long)priv);
tasklet_init(&priv->rx_tasklet, ath9k_rx_tasklet,
@ -461,6 +462,7 @@ static int ath9k_init_priv(struct ath9k_htc_priv *priv, u16 devid)
tasklet_init(&priv->tx_tasklet, ath9k_tx_tasklet, (unsigned long)priv);
INIT_DELAYED_WORK(&priv->ath9k_aggr_work, ath9k_htc_aggr_work);
INIT_DELAYED_WORK(&priv->ath9k_ani_work, ath9k_ani_work);
INIT_WORK(&priv->ps_work, ath9k_ps_work);
/*
* Cache line size is used to size and align various
@ -515,12 +517,16 @@ static void ath9k_set_hw_capab(struct ath9k_htc_priv *priv,
IEEE80211_HW_AMPDU_AGGREGATION |
IEEE80211_HW_SPECTRUM_MGMT |
IEEE80211_HW_HAS_RATE_CONTROL |
IEEE80211_HW_RX_INCLUDES_FCS;
IEEE80211_HW_RX_INCLUDES_FCS |
IEEE80211_HW_SUPPORTS_PS |
IEEE80211_HW_PS_NULLFUNC_STACK;
hw->wiphy->interface_modes =
BIT(NL80211_IFTYPE_STATION) |
BIT(NL80211_IFTYPE_ADHOC);
hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
hw->queues = 4;
hw->channel_change_time = 5000;
hw->max_listen_interval = 10;

93
drivers/net/wireless/ath/ath9k/htc_drv_main.c
View File

@ -65,6 +65,56 @@ static enum htc_phymode ath9k_htc_get_curmode(struct ath9k_htc_priv *priv,
return mode;
}
static bool ath9k_htc_setpower(struct ath9k_htc_priv *priv,
enum ath9k_power_mode mode)
{
bool ret;
mutex_lock(&priv->htc_pm_lock);
ret = ath9k_hw_setpower(priv->ah, mode);
mutex_unlock(&priv->htc_pm_lock);
return ret;
}
void ath9k_htc_ps_wakeup(struct ath9k_htc_priv *priv)
{
mutex_lock(&priv->htc_pm_lock);
if (++priv->ps_usecount != 1)
goto unlock;
ath9k_hw_setpower(priv->ah, ATH9K_PM_AWAKE);
unlock:
mutex_unlock(&priv->htc_pm_lock);
}
void ath9k_htc_ps_restore(struct ath9k_htc_priv *priv)
{
mutex_lock(&priv->htc_pm_lock);
if (--priv->ps_usecount != 0)
goto unlock;
if (priv->ps_enabled)
ath9k_hw_setpower(priv->ah, ATH9K_PM_NETWORK_SLEEP);
unlock:
mutex_unlock(&priv->htc_pm_lock);
}
void ath9k_ps_work(struct work_struct *work)
{
struct ath9k_htc_priv *priv =
container_of(work, struct ath9k_htc_priv,
ps_work);
ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
/* The chip wakes up after receiving the first beacon
while network sleep is enabled. For the driver to
be in sync with the hw, set the chip to awake and
only then set it to sleep.
*/
ath9k_htc_setpower(priv, ATH9K_PM_NETWORK_SLEEP);
}
static int ath9k_htc_set_channel(struct ath9k_htc_priv *priv,
struct ieee80211_hw *hw,
struct ath9k_channel *hchan)
@ -87,7 +137,7 @@ static int ath9k_htc_set_channel(struct ath9k_htc_priv *priv,
/* Fiddle around with fastcc later on, for now just use full reset */
fastcc = false;
ath9k_htc_ps_wakeup(priv);
htc_stop(priv->htc);
WMI_CMD(WMI_DISABLE_INTR_CMDID);
WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
@ -103,6 +153,7 @@ static int ath9k_htc_set_channel(struct ath9k_htc_priv *priv,
ath_print(common, ATH_DBG_FATAL,
"Unable to reset channel (%u Mhz) "
"reset status %d\n", channel->center_freq, ret);
ath9k_htc_ps_restore(priv);
goto err;
}
@ -128,6 +179,7 @@ static int ath9k_htc_set_channel(struct ath9k_htc_priv *priv,
priv->op_flags &= ~OP_FULL_RESET;
err:
ath9k_htc_ps_restore(priv);
return ret;
}
@ -693,6 +745,10 @@ void ath9k_ani_work(struct work_struct *work)
short_cal_interval = ATH_STA_SHORT_CALINTERVAL;
/* Only calibrate if awake */
if (ah->power_mode != ATH9K_PM_AWAKE)
goto set_timer;
/* Long calibration runs independently of short calibration. */
if ((timestamp - common->ani.longcal_timer) >= ATH_LONG_CALINTERVAL) {
longcal = true;
@ -727,6 +783,9 @@ void ath9k_ani_work(struct work_struct *work)
/* Skip all processing if there's nothing to do. */
if (longcal || shortcal || aniflag) {
ath9k_htc_ps_wakeup(priv);
/* Call ANI routine if necessary */
if (aniflag)
ath9k_hw_ani_monitor(ah, ah->curchan);
@ -748,8 +807,11 @@ void ath9k_ani_work(struct work_struct *work)
ah->curchan->channelFlags,
common->ani.noise_floor);
}
ath9k_htc_ps_restore(priv);
}
set_timer:
/*
* Set timer interval based on previous results.
* The interval must be the shortest necessary to satisfy ANI,
@ -1112,6 +1174,7 @@ static void ath9k_htc_stop(struct ieee80211_hw *hw)
return;
}
ath9k_htc_ps_wakeup(priv);
htc_stop(priv->htc);
WMI_CMD(WMI_DISABLE_INTR_CMDID);
WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
@ -1119,8 +1182,10 @@ static void ath9k_htc_stop(struct ieee80211_hw *hw)
ath9k_hw_phy_disable(ah);
ath9k_hw_disable(ah);
ath9k_hw_configpcipowersave(ah, 1, 1);
ath9k_hw_setpower(ah, ATH9K_PM_FULL_SLEEP);
ath9k_htc_ps_restore(priv);
ath9k_htc_setpower(priv, ATH9K_PM_FULL_SLEEP);
cancel_work_sync(&priv->ps_work);
cancel_delayed_work_sync(&priv->ath9k_ani_work);
cancel_delayed_work_sync(&priv->ath9k_aggr_work);
cancel_delayed_work_sync(&priv->ath9k_led_blink_work);
@ -1161,6 +1226,7 @@ static int ath9k_htc_add_interface(struct ieee80211_hw *hw,
goto out;
}
ath9k_htc_ps_wakeup(priv);
memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif));
memcpy(&hvif.myaddr, vif->addr, ETH_ALEN);
@ -1207,6 +1273,7 @@ static int ath9k_htc_add_interface(struct ieee80211_hw *hw,
priv->vif = vif;
out:
ath9k_htc_ps_restore(priv);
mutex_unlock(&priv->mutex);
return ret;
}
@ -1275,6 +1342,16 @@ static int ath9k_htc_config(struct ieee80211_hw *hw, u32 changed)
}
}
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_MONITOR) {
if (conf->flags & IEEE80211_CONF_MONITOR) {
@ -1311,6 +1388,7 @@ static void ath9k_htc_configure_filter(struct ieee80211_hw *hw,
mutex_lock(&priv->mutex);
ath9k_htc_ps_wakeup(priv);
changed_flags &= SUPPORTED_FILTERS;
*total_flags &= SUPPORTED_FILTERS;
@ -1321,6 +1399,7 @@ static void ath9k_htc_configure_filter(struct ieee80211_hw *hw,
ath_print(ath9k_hw_common(priv->ah), ATH_DBG_CONFIG,
"Set HW RX filter: 0x%x\n", rfilt);
ath9k_htc_ps_restore(priv);
mutex_unlock(&priv->mutex);
}
@ -1398,6 +1477,7 @@ static int ath9k_htc_set_key(struct ieee80211_hw *hw,
mutex_lock(&priv->mutex);
ath_print(common, ATH_DBG_CONFIG, "Set HW Key\n");
ath9k_htc_ps_wakeup(priv);
switch (cmd) {
case SET_KEY:
@ -1420,6 +1500,7 @@ static int ath9k_htc_set_key(struct ieee80211_hw *hw,
ret = -EINVAL;
}
ath9k_htc_ps_restore(priv);
mutex_unlock(&priv->mutex);
return ret;
@ -1435,6 +1516,7 @@ static void ath9k_htc_bss_info_changed(struct ieee80211_hw *hw,
struct ath_common *common = ath9k_hw_common(ah);
mutex_lock(&priv->mutex);
ath9k_htc_ps_wakeup(priv);
if (changed & BSS_CHANGED_ASSOC) {
common->curaid = bss_conf->assoc ?
@ -1447,6 +1529,7 @@ static void ath9k_htc_bss_info_changed(struct ieee80211_hw *hw,
ath_start_ani(priv);
} else {
priv->op_flags &= ~OP_ASSOCIATED;
cancel_work_sync(&priv->ps_work);
cancel_delayed_work_sync(&priv->ath9k_ani_work);
}
}
@ -1506,6 +1589,7 @@ static void ath9k_htc_bss_info_changed(struct ieee80211_hw *hw,
ath9k_hw_init_global_settings(ah);
}
ath9k_htc_ps_restore(priv);
mutex_unlock(&priv->mutex);
}
@ -1534,9 +1618,11 @@ static void ath9k_htc_reset_tsf(struct ieee80211_hw *hw)
{
struct ath9k_htc_priv *priv = hw->priv;
ath9k_htc_ps_wakeup(priv);
mutex_lock(&priv->mutex);
ath9k_hw_reset_tsf(priv->ah);
mutex_unlock(&priv->mutex);
ath9k_htc_ps_restore(priv);
}
static int ath9k_htc_ampdu_action(struct ieee80211_hw *hw,
@ -1585,6 +1671,7 @@ static void ath9k_htc_sw_scan_start(struct ieee80211_hw *hw)
spin_lock_bh(&priv->beacon_lock);
priv->op_flags |= OP_SCANNING;
spin_unlock_bh(&priv->beacon_lock);
cancel_work_sync(&priv->ps_work);
cancel_delayed_work_sync(&priv->ath9k_ani_work);
mutex_unlock(&priv->mutex);
}
@ -1593,6 +1680,7 @@ static void ath9k_htc_sw_scan_complete(struct ieee80211_hw *hw)
{
struct ath9k_htc_priv *priv = hw->priv;
ath9k_htc_ps_wakeup(priv);
mutex_lock(&priv->mutex);
spin_lock_bh(&priv->beacon_lock);
priv->op_flags &= ~OP_SCANNING;
@ -1600,6 +1688,7 @@ static void ath9k_htc_sw_scan_complete(struct ieee80211_hw *hw)
priv->op_flags |= OP_FULL_RESET;
ath_start_ani(priv);
mutex_unlock(&priv->mutex);
ath9k_htc_ps_restore(priv);
}
static int ath9k_htc_set_rts_threshold(struct ieee80211_hw *hw, u32 value)

7
drivers/net/wireless/ath/ath9k/htc_drv_txrx.c
View File

@ -553,7 +553,7 @@ void ath9k_rx_tasklet(unsigned long data)
struct ieee80211_rx_status rx_status;
struct sk_buff *skb;
unsigned long flags;
struct ieee80211_hdr *hdr;
do {
spin_lock_irqsave(&priv->rx.rxbuflock, flags);
@ -580,6 +580,11 @@ void ath9k_rx_tasklet(unsigned long data)
memcpy(IEEE80211_SKB_RXCB(rxbuf->skb), &rx_status,
sizeof(struct ieee80211_rx_status));
skb = rxbuf->skb;
hdr = (struct ieee80211_hdr *) skb->data;
if (ieee80211_is_beacon(hdr->frame_control) && priv->ps_enabled)
ieee80211_queue_work(priv->hw, &priv->ps_work);
spin_unlock_irqrestore(&priv->rx.rxbuflock, flags);
ieee80211_rx(priv->hw, skb);

6
drivers/net/wireless/ath/ath9k/hw.c
View File

@ -3245,8 +3245,10 @@ int ath9k_hw_fill_cap_info(struct ath_hw *ah)
pCap->hw_caps |= ATH9K_HW_CAP_RFSILENT;
}
#endif
pCap->hw_caps &= ~ATH9K_HW_CAP_AUTOSLEEP;
if (AR_SREV_9271(ah))
pCap->hw_caps |= ATH9K_HW_CAP_AUTOSLEEP;
else
pCap->hw_caps &= ~ATH9K_HW_CAP_AUTOSLEEP;
if (AR_SREV_9280(ah) || AR_SREV_9285(ah))
pCap->hw_caps &= ~ATH9K_HW_CAP_4KB_SPLITTRANS;