--- /dev/null
+/*
+ * Copyright (c) 2010-2011 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 */
+/******************/
+
+#define ATH_HTC_BTCOEX_PRODUCT_ID "wb193"
+
+#ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
+
+/*
+ * 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))) {
+ clear_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags);
+ clear_bit(OP_BT_SCAN, &priv->op_flags);
+ /* Detect if colocated bt started scanning */
+ if (btcoex->bt_priority_cnt >= ATH_BT_CNT_SCAN_THRESHOLD) {
+ ath_dbg(ath9k_hw_common(ah), BTCOEX,
+ "BT scan detected\n");
+ set_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags);
+ set_bit(OP_BT_SCAN, &priv->op_flags);
+ } else if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) {
+ ath_dbg(ath9k_hw_common(ah), BTCOEX,
+ "BT priority traffic detected\n");
+ set_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags);
+ }
+
+ 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;
+ int ret;
+
+ ath_detect_bt_priority(priv);
+
+ ret = ath9k_htc_update_cap_target(priv,
+ test_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags));
+ if (ret) {
+ ath_err(common, "Unable to set BTCOEX parameters\n");
+ return;
+ }
+
+ ath9k_hw_btcoex_bt_stomp(priv->ah, test_bit(OP_BT_SCAN, &priv->op_flags) ?
+ ATH_BTCOEX_STOMP_ALL : btcoex->bt_stomp_type);
+
+ ath9k_hw_btcoex_enable(priv->ah);
+ timer_period = test_bit(OP_BT_SCAN, &priv->op_flags) ?
+ 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);
+
+ ath_dbg(common, BTCOEX, "time slice work for bt and wlan\n");
+
+ if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW ||
+ test_bit(OP_BT_SCAN, &priv->op_flags))
+ ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_NONE);
+ else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL)
+ ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_LOW);
+
+ ath9k_hw_btcoex_enable(priv->ah);
+}
+
+static 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
+ */
+
+static 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), BTCOEX, "Starting btcoex work\n");
+
+ btcoex->bt_priority_cnt = 0;
+ btcoex->bt_priority_time = jiffies;
+ clear_bit(OP_BT_PRIORITY_DETECTED, &priv->op_flags);
+ clear_bit(OP_BT_SCAN, &priv->op_flags);
+ ieee80211_queue_delayed_work(priv->hw, &priv->coex_period_work, 0);
+}
+
+
+/*
+ * Cancel btcoex and bt duty cycle work.
+ */
+static 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);
+}
+
+void ath9k_htc_start_btcoex(struct ath9k_htc_priv *priv)
+{
+ struct ath_hw *ah = priv->ah;
+
+ if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE) {
+ ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
+ AR_STOMP_LOW_WLAN_WGHT, 0);
+ ath9k_hw_btcoex_enable(ah);
+ ath_htc_resume_btcoex_work(priv);
+ }
+}
+
+void ath9k_htc_stop_btcoex(struct ath9k_htc_priv *priv)
+{
+ struct ath_hw *ah = priv->ah;
+
+ if (ah->btcoex_hw.enabled &&
+ ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) {
+ if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
+ ath_htc_cancel_btcoex_work(priv);
+ ath9k_hw_btcoex_disable(ah);
+ }
+}
+
+void ath9k_htc_init_btcoex(struct ath9k_htc_priv *priv, char *product)
+{
+ struct ath_hw *ah = priv->ah;
+ struct ath_common *common = ath9k_hw_common(ah);
+ int qnum;
+
+ /*
+ * Check if BTCOEX is globally disabled.
+ */
+ if (!common->btcoex_enabled) {
+ ah->btcoex_hw.scheme = ATH_BTCOEX_CFG_NONE;
+ return;
+ }
+
+ if (product && strncmp(product, ATH_HTC_BTCOEX_PRODUCT_ID, 5) == 0) {
+ ah->btcoex_hw.scheme = ATH_BTCOEX_CFG_3WIRE;
+ }
+
+ switch (ath9k_hw_get_btcoex_scheme(priv->ah)) {
+ case ATH_BTCOEX_CFG_NONE:
+ break;
+ case ATH_BTCOEX_CFG_3WIRE:
+ priv->ah->btcoex_hw.btactive_gpio = 7;
+ priv->ah->btcoex_hw.btpriority_gpio = 6;
+ priv->ah->btcoex_hw.wlanactive_gpio = 8;
+ priv->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW;
+ ath9k_hw_btcoex_init_3wire(priv->ah);
+ ath_htc_init_btcoex_work(priv);
+ qnum = priv->hwq_map[IEEE80211_AC_BE];
+ ath9k_hw_init_btcoex_hw(priv->ah, qnum);
+ break;
+ default:
+ WARN_ON(1);
+ break;
+ }
+}
+
+#endif /* CONFIG_ATH9K_BTCOEX_SUPPORT */
+
+/*******/
+/* LED */
+/*******/
+
+#ifdef CONFIG_MAC80211_LEDS
+void ath9k_led_work(struct work_struct *work)
+{
+ struct ath9k_htc_priv *priv = container_of(work,
+ struct ath9k_htc_priv,
+ led_work);
+
+ ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin,
+ (priv->brightness == LED_OFF));
+}
+
+static void ath9k_led_brightness(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+{
+ struct ath9k_htc_priv *priv = container_of(led_cdev,
+ struct ath9k_htc_priv,
+ led_cdev);
+
+ /* Not locked, but it's just a tiny green light..*/
+ priv->brightness = brightness;
+ ieee80211_queue_work(priv->hw, &priv->led_work);
+}
+
+void ath9k_deinit_leds(struct ath9k_htc_priv *priv)
+{
+ if (!priv->led_registered)
+ return;
+
+ ath9k_led_brightness(&priv->led_cdev, LED_OFF);
+ led_classdev_unregister(&priv->led_cdev);
+ cancel_work_sync(&priv->led_work);
+}
+
+
+void ath9k_configure_leds(struct ath9k_htc_priv *priv)
+{
+ /* 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);
+
+}
+
+void ath9k_init_leds(struct ath9k_htc_priv *priv)
+{
+ 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;
+
+ if (!ath9k_htc_led_blink)
+ priv->led_cdev.default_trigger =
+ ieee80211_get_radio_led_name(priv->hw);
+
+ ath9k_configure_leds(priv);
+
+ snprintf(priv->led_name, sizeof(priv->led_name),
+ "ath9k_htc-%s", wiphy_name(priv->hw->wiphy));
+ priv->led_cdev.name = priv->led_name;
+ priv->led_cdev.brightness_set = ath9k_led_brightness;
+
+ ret = led_classdev_register(wiphy_dev(priv->hw->wiphy), &priv->led_cdev);
+ if (ret < 0)
+ return;
+
+ INIT_WORK(&priv->led_work, ath9k_led_work);
+ priv->led_registered = true;
+
+ return;
+}
+#endif
+
+/*******************/
+/* Rfkill */
+/*******************/
+
+static bool ath_is_rfkill_set(struct ath9k_htc_priv *priv)
+{
+ bool is_blocked;
+
+ ath9k_htc_ps_wakeup(priv);
+ is_blocked = ath9k_hw_gpio_get(priv->ah, priv->ah->rfkill_gpio) ==
+ priv->ah->rfkill_polarity;
+ ath9k_htc_ps_restore(priv);
+
+ return is_blocked;
+}
+
+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);
+}
Code Review / kvmfornfv.git / blobdiff