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ath9k_htc: Move LED/RFKILL code to htc_drv_gpio.c
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And add the copyright/license header.

Signed-off-by: Sujith Manoharan <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Sujith Manoharan authored and John W. Linville committed Jan 4, 2011
1 parent 039a072 commit 1e1f4ad
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Showing 3 changed files with 333 additions and 312 deletions.
5 changes: 5 additions & 0 deletions drivers/net/wireless/ath/ath9k/htc.h
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Original file line number Diff line number Diff line change
Expand Up @@ -459,8 +459,13 @@ void ath9k_htc_ps_restore(struct ath9k_htc_priv *priv);
void ath9k_ps_work(struct work_struct *work);
bool ath9k_htc_setpower(struct ath9k_htc_priv *priv,
enum ath9k_power_mode mode);
void ath_update_txpow(struct ath9k_htc_priv *priv);

void ath9k_start_rfkill_poll(struct ath9k_htc_priv *priv);
void ath9k_htc_rfkill_poll_state(struct ieee80211_hw *hw);
void ath9k_htc_radio_enable(struct ieee80211_hw *hw);
void ath9k_htc_radio_disable(struct ieee80211_hw *hw);
void ath9k_led_stop_brightness(struct ath9k_htc_priv *priv);
void ath9k_init_leds(struct ath9k_htc_priv *priv);
void ath9k_deinit_leds(struct ath9k_htc_priv *priv);

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327 changes: 327 additions & 0 deletions drivers/net/wireless/ath/ath9k/htc_drv_gpio.c
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Original file line number Diff line number Diff line change
@@ -1,3 +1,19 @@
/*
* 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"

/******************/
Expand Down Expand Up @@ -131,3 +147,314 @@ 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);
}

ath_update_txpow(priv);

/* Start RX */
WMI_CMD(WMI_START_RECV_CMDID);
ath9k_host_rx_init(priv);

/* Start TX */
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);

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);
htc_stop(priv->htc);
WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
skb_queue_purge(&priv->tx_queue);

/* Stop RX */
WMI_CMD(WMI_STOP_RECV_CMDID);

/*
* 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);
}
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