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path: root/drivers/net/wireless/ath/ath9k/htc_drv_gpio.c
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Diffstat (limited to 'drivers/net/wireless/ath/ath9k/htc_drv_gpio.c')
-rw-r--r--drivers/net/wireless/ath/ath9k/htc_drv_gpio.c327
1 files changed, 327 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_gpio.c b/drivers/net/wireless/ath/ath9k/htc_drv_gpio.c
index 283ff97ed446..fe70f67aa088 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_gpio.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_gpio.c
@@ -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"
/******************/
@@ -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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