/*
* Copyright (c) 2010 Atheros Communications Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "htc.h"
/******************/
/* BTCOEX */
/******************/
/*
* Detects if there is any priority bt traffic
*/
static void ath_detect_bt_priority(struct ath9k_htc_priv *priv)
{
struct ath_btcoex *btcoex = &priv->btcoex;
struct ath_hw *ah = priv->ah;
if (ath9k_hw_gpio_get(ah, ah->btcoex_hw.btpriority_gpio))
btcoex->bt_priority_cnt++;
if (time_after(jiffies, btcoex->bt_priority_time +
msecs_to_jiffies(ATH_BT_PRIORITY_TIME_THRESHOLD))) {
priv->op_flags &= ~(OP_BT_PRIORITY_DETECTED | OP_BT_SCAN);
/* Detect if colocated bt started scanning */
if (btcoex->bt_priority_cnt >= ATH_BT_CNT_SCAN_THRESHOLD) {
ath_dbg(ath9k_hw_common(ah), ATH_DBG_BTCOEX,
"BT scan detected\n");
priv->op_flags |= (OP_BT_SCAN |
OP_BT_PRIORITY_DETECTED);
} else if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) {
ath_dbg(ath9k_hw_common(ah), ATH_DBG_BTCOEX,
"BT priority traffic detected\n");
priv->op_flags |= OP_BT_PRIORITY_DETECTED;
}
btcoex->bt_priority_cnt = 0;
btcoex->bt_priority_time = jiffies;
}
}
/*
* This is the master bt coex work which runs for every
* 45ms, bt traffic will be given priority during 55% of this
* period while wlan gets remaining 45%
*/
static void ath_btcoex_period_work(struct work_struct *work)
{
struct ath9k_htc_priv *priv = container_of(work, struct ath9k_htc_priv,
coex_period_work.work);
struct ath_btcoex *btcoex = &priv->btcoex;
struct ath_common *common = ath9k_hw_common(priv->ah);
u32 timer_period;
bool is_btscan;
int ret;
u8 cmd_rsp, aggr;
ath_detect_bt_priority(priv);
is_btscan = !!(priv->op_flags & OP_BT_SCAN);
aggr = priv->op_flags & OP_BT_PRIORITY_DETECTED;
WMI_CMD_BUF(WMI_AGGR_LIMIT_CMD, &aggr);
ath9k_cmn_btcoex_bt_stomp(common, is_btscan ? ATH_BTCOEX_STOMP_ALL :
btcoex->bt_stomp_type);
timer_period = is_btscan ? btcoex->btscan_no_stomp :
btcoex->btcoex_no_stomp;
ieee80211_queue_delayed_work(priv->hw, &priv->duty_cycle_work,
msecs_to_jiffies(timer_period));
ieee80211_queue_delayed_work(priv->hw, &priv->coex_period_work,
msecs_to_jiffies(btcoex->btcoex_period));
}
/*
* Work to time slice between wlan and bt traffic and
* configure weight registers
*/
static void ath_btcoex_duty_cycle_work(struct work_struct *work)
{
struct ath9k_htc_priv *priv = container_of(work, struct ath9k_htc_priv,
duty_cycle_work.work);
struct ath_hw *ah = priv->ah;
struct ath_btcoex *btcoex = &priv->btcoex;
struct ath_common *common = ath9k_hw_common(ah);
bool is_btscan = priv->op_flags & OP_BT_SCAN;
ath_dbg(common, ATH_DBG_BTCOEX,
"time slice work for bt and wlan\n");
if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW || is_btscan)
ath9k_cmn_btcoex_bt_stomp(common, ATH_BTCOEX_STOMP_NONE);
else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL)
ath9k_cmn_btcoex_bt_stomp(common, ATH_BTCOEX_STOMP_LOW);
}
void ath_htc_init_btcoex_work(struct ath9k_htc_priv *priv)
{
struct ath_btcoex *btcoex = &priv->btcoex;
btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD;
btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) *
btcoex->btcoex_period / 100;
btcoex->btscan_no_stomp = (100 - ATH_BTCOEX_BTSCAN_DUTY_CYCLE) *
btcoex->btcoex_period / 100;
INIT_DELAYED_WORK(&priv->coex_period_work, ath_btcoex_period_work);
INIT_DELAYED_WORK(&priv->duty_cycle_work, ath_btcoex_duty_cycle_work);
}
/*
* (Re)start btcoex work
*/
void ath_htc_resume_btcoex_work(struct ath9k_htc_priv *priv)
{
struct ath_btcoex *btcoex = &priv->btcoex;
struct ath_hw *ah = priv->ah;
ath_dbg(ath9k_hw_common(ah), ATH_DBG_BTCOEX, "Starting btcoex work\n");
btcoex->bt_priority_cnt = 0;
btcoex->bt_priority_time = jiffies;
priv->op_flags &= ~(OP_BT_PRIORITY_DETECTED | OP_BT_SCAN);
ieee80211_queue_delayed_work(priv->hw, &priv->coex_period_work, 0);
}
/*
* Cancel btcoex and bt duty cycle work.
*/
void ath_htc_cancel_btcoex_work(struct ath9k_htc_priv *priv)
{
cancel_delayed_work_sync(&priv->coex_period_work);
cancel_delayed_work_sync(&priv->duty_cycle_work);
}
/*******/
/* LED */
/*******/
static void ath9k_led_blink_work(struct work_struct *work)
{
struct ath9k_htc_priv *priv = container_of(work, struct ath9k_htc_priv,
ath9k_led_blink_work.work);
if (!(priv->op_flags & OP_LED_ASSOCIATED))
return;
if ((priv->led_on_duration == ATH_LED_ON_DURATION_IDLE) ||
(priv->led_off_duration == ATH_LED_OFF_DURATION_IDLE))
ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin, 0);
else
ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin,
(priv->op_flags & OP_LED_ON) ? 1 : 0);
ieee80211_queue_delayed_work(priv->hw,
&priv->ath9k_led_blink_work,
(priv->op_flags & OP_LED_ON) ?
msecs_to_jiffies(priv->led_off_duration) :
msecs_to_jiffies(priv->led_on_duration));
priv->led_on_duration = priv->led_on_cnt ?
max((ATH_LED_ON_DURATION_IDLE - priv->led_on_cnt), 25) :
ATH_LED_ON_DURATION_IDLE;
priv->led_off_duration = priv->led_off_cnt ?
max((ATH_LED_OFF_DURATION_IDLE - priv->led_off_cnt), 10) :
ATH_LED_OFF_DURATION_IDLE;
priv->led_on_cnt = priv->led_off_cnt = 0;
if (priv->op_flags & OP_LED_ON)
priv->op_flags &= ~OP_LED_ON;
else
priv->op_flags |= OP_LED_ON;
}
static void ath9k_led_brightness_work(struct work_struct *work)
{
struct ath_led *led = container_of(work, struct ath_led,
brightness_work.work);
struct ath9k_htc_priv *priv = led->priv;
switch (led->brightness) {
case LED_OFF:
if (led->led_type == ATH_LED_ASSOC ||
led->led_type == ATH_LED_RADIO) {
ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin,
(led->led_type == ATH_LED_RADIO));
priv->op_flags &= ~OP_LED_ASSOCIATED;
if (led->led_type == ATH_LED_RADIO)
priv->op_flags &= ~OP_LED_ON;
} else {
priv->led_off_cnt++;
}
break;
case LED_FULL:
if (led->led_type == ATH_LED_ASSOC) {
priv->op_flags |= OP_LED_ASSOCIATED;
ieee80211_queue_delayed_work(priv->hw,
&priv->ath9k_led_blink_work, 0);
} else if (led->led_type == ATH_LED_RADIO) {
ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin, 0);
priv->op_flags |= OP_LED_ON;
} else {
priv->led_on_cnt++;
}
break;
default:
break;
}
}
static void ath9k_led_brightness(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
struct ath_led *led = container_of(led_cdev, struct ath_led, led_cdev);
struct ath9k_htc_priv *priv = led->priv;
led->brightness = brightness;
if (!(priv->op_flags & OP_LED_DEINIT))
ieee80211_queue_delayed_work(priv->hw,
&led->brightness_work, 0);
}
void ath9k_led_stop_brightness(struct ath9k_htc_priv *priv)
{
cancel_delayed_work_sync(&priv->radio_led.brightness_work);
cancel_delayed_work_sync(&priv->assoc_led.brightness_work);
cancel_delayed_work_sync(&priv->tx_led.brightness_work);
cancel_delayed_work_sync(&priv->rx_led.brightness_work);
}
static int ath9k_register_led(struct ath9k_htc_priv *priv, struct ath_led *led,
char *trigger)
{
int ret;
led->priv = priv;
led->led_cdev.name = led->name;
led->led_cdev.default_trigger = trigger;
led->led_cdev.brightness_set = ath9k_led_brightness;
ret = led_classdev_register(wiphy_dev(priv->hw->wiphy), &led->led_cdev);
if (ret)
ath_err(ath9k_hw_common(priv->ah),
"Failed to register led:%s", led->name);
else
led->registered = 1;
INIT_DELAYED_WORK(&led->brightness_work, ath9k_led_brightness_work);
return ret;
}
static void ath9k_unregister_led(struct ath_led *led)
{
if (led->registered) {
led_classdev_unregister(&led->led_cdev);
led->registered = 0;
}
}
void ath9k_deinit_leds(struct ath9k_htc_priv *priv)
{
priv->op_flags |= OP_LED_DEINIT;
ath9k_unregister_led(&priv->assoc_led);
priv->op_flags &= ~OP_LED_ASSOCIATED;
ath9k_unregister_led(&priv->tx_led);
ath9k_unregister_led(&priv->rx_led);
ath9k_unregister_led(&priv->radio_led);
}
void ath9k_init_leds(struct ath9k_htc_priv *priv)
{
char *trigger;
int ret;
if (AR_SREV_9287(priv->ah))
priv->ah->led_pin = ATH_LED_PIN_9287;
else if (AR_SREV_9271(priv->ah))
priv->ah->led_pin = ATH_LED_PIN_9271;
else if (AR_DEVID_7010(priv->ah))
priv->ah->led_pin = ATH_LED_PIN_7010;
else
priv->ah->led_pin = ATH_LED_PIN_DEF;
/* Configure gpio 1 for output */
ath9k_hw_cfg_output(priv->ah, priv->ah->led_pin,
AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
/* LED off, active low */
ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin, 1);
INIT_DELAYED_WORK(&priv->ath9k_led_blink_work, ath9k_led_blink_work);
trigger = ieee80211_get_radio_led_name(priv->hw);
snprintf(priv->radio_led.name, sizeof(priv->radio_led.name),
"ath9k-%s::radio", wiphy_name(priv->hw->wiphy));
ret = ath9k_register_led(priv, &priv->radio_led, trigger);
priv->radio_led.led_type = ATH_LED_RADIO;
if (ret)
goto fail;
trigger = ieee80211_get_assoc_led_name(priv->hw);
snprintf(priv->assoc_led.name, sizeof(priv->assoc_led.name),
"ath9k-%s::assoc", wiphy_name(priv->hw->wiphy));
ret = ath9k_register_led(priv, &priv->assoc_led, trigger);
priv->assoc_led.led_type = ATH_LED_ASSOC;
if (ret)
goto fail;
trigger = ieee80211_get_tx_led_name(priv->hw);
snprintf(priv->tx_led.name, sizeof(priv->tx_led.name),
"ath9k-%s::tx", wiphy_name(priv->hw->wiphy));
ret = ath9k_register_led(priv, &priv->tx_led, trigger);
priv->tx_led.led_type = ATH_LED_TX;
if (ret)
goto fail;
trigger = ieee80211_get_rx_led_name(priv->hw);
snprintf(priv->rx_led.name, sizeof(priv->rx_led.name),
"ath9k-%s::rx", wiphy_name(priv->hw->wiphy));
ret = ath9k_register_led(priv, &priv->rx_led, trigger);
priv->rx_led.led_type = ATH_LED_RX;
if (ret)
goto fail;
priv->op_flags &= ~OP_LED_DEINIT;
return;
fail:
cancel_delayed_work_sync(&priv->ath9k_led_blink_work);
ath9k_deinit_leds(priv);
}
/*******************/
/* Rfkill */
/*******************/
static bool ath_is_rfkill_set(struct ath9k_htc_priv *priv)
{
return ath9k_hw_gpio_get(priv->ah, priv->ah->rfkill_gpio) ==
priv->ah->rfkill_polarity;
}
void ath9k_htc_rfkill_poll_state(struct ieee80211_hw *hw)
{
struct ath9k_htc_priv *priv = hw->priv;
bool blocked = !!ath_is_rfkill_set(priv);
wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
}
void ath9k_start_rfkill_poll(struct ath9k_htc_priv *priv)
{
if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
wiphy_rfkill_start_polling(priv->hw->wiphy);
}
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);
}
void ath9k_htc_radio_disable(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;
ath9k_htc_ps_wakeup(priv);
/* Disable LED */
ath9k_hw_set_gpio(ah, ah->led_pin, 1);
ath9k_hw_cfg_gpio_input(ah, ah->led_pin);
WMI_CMD(WMI_DISABLE_INTR_CMDID);
/* Stop TX */
ieee80211_stop_queues(hw);
ath9k_htc_tx_drain(priv);
WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
/* Stop RX */
WMI_CMD(WMI_STOP_RECV_CMDID);
/* Clear the WMI event queue */
ath9k_wmi_event_drain(priv);
/*
* The MIB counters have to be disabled here,
* since the target doesn't do it.
*/
ath9k_hw_disable_mib_counters(ah);
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);
}
/* Disable the PHY */
ath9k_hw_phy_disable(ah);
ath9k_htc_ps_restore(priv);
ath9k_htc_setpower(priv, ATH9K_PM_FULL_SLEEP);
}
