Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 1 | /* |
Sujith Manoharan | 5b68138 | 2011-05-17 13:36:18 +0530 | [diff] [blame] | 2 | * Copyright (c) 2008-2011 Atheros Communications Inc. |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 3 | * |
| 4 | * Permission to use, copy, modify, and/or distribute this software for any |
| 5 | * purpose with or without fee is hereby granted, provided that the above |
| 6 | * copyright notice and this permission notice appear in all copies. |
| 7 | * |
| 8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 15 | */ |
| 16 | |
| 17 | #include "ath9k.h" |
| 18 | |
| 19 | /********************************/ |
| 20 | /* LED functions */ |
| 21 | /********************************/ |
| 22 | |
Felix Fietkau | 0cf55c2 | 2011-02-27 22:26:40 +0100 | [diff] [blame] | 23 | #ifdef CONFIG_MAC80211_LEDS |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 24 | static void ath_led_brightness(struct led_classdev *led_cdev, |
| 25 | enum led_brightness brightness) |
| 26 | { |
Felix Fietkau | 0cf55c2 | 2011-02-27 22:26:40 +0100 | [diff] [blame] | 27 | struct ath_softc *sc = container_of(led_cdev, struct ath_softc, led_cdev); |
| 28 | ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, (brightness == LED_OFF)); |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 29 | } |
| 30 | |
| 31 | void ath_deinit_leds(struct ath_softc *sc) |
| 32 | { |
Felix Fietkau | 0cf55c2 | 2011-02-27 22:26:40 +0100 | [diff] [blame] | 33 | if (!sc->led_registered) |
| 34 | return; |
| 35 | |
| 36 | ath_led_brightness(&sc->led_cdev, LED_OFF); |
| 37 | led_classdev_unregister(&sc->led_cdev); |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 38 | } |
| 39 | |
| 40 | void ath_init_leds(struct ath_softc *sc) |
| 41 | { |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 42 | int ret; |
| 43 | |
Felix Fietkau | 7b27ba4 | 2012-04-12 22:35:57 +0200 | [diff] [blame] | 44 | if (AR_SREV_9100(sc->sc_ah)) |
| 45 | return; |
| 46 | |
Felix Fietkau | 6de66dd | 2011-03-19 13:55:40 +0100 | [diff] [blame] | 47 | if (sc->sc_ah->led_pin < 0) { |
| 48 | if (AR_SREV_9287(sc->sc_ah)) |
| 49 | sc->sc_ah->led_pin = ATH_LED_PIN_9287; |
| 50 | else if (AR_SREV_9485(sc->sc_ah)) |
| 51 | sc->sc_ah->led_pin = ATH_LED_PIN_9485; |
Senthil Balasubramanian | 353e501 | 2011-04-22 11:32:08 +0530 | [diff] [blame] | 52 | else if (AR_SREV_9300(sc->sc_ah)) |
| 53 | sc->sc_ah->led_pin = ATH_LED_PIN_9300; |
Rajkumar Manoharan | 423e38e | 2011-10-13 11:00:44 +0530 | [diff] [blame] | 54 | else if (AR_SREV_9462(sc->sc_ah)) |
| 55 | sc->sc_ah->led_pin = ATH_LED_PIN_9462; |
Felix Fietkau | 6de66dd | 2011-03-19 13:55:40 +0100 | [diff] [blame] | 56 | else |
| 57 | sc->sc_ah->led_pin = ATH_LED_PIN_DEF; |
| 58 | } |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 59 | |
| 60 | /* Configure gpio 1 for output */ |
| 61 | ath9k_hw_cfg_output(sc->sc_ah, sc->sc_ah->led_pin, |
| 62 | AR_GPIO_OUTPUT_MUX_AS_OUTPUT); |
| 63 | /* LED off, active low */ |
| 64 | ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 1); |
| 65 | |
Felix Fietkau | 0cf55c2 | 2011-02-27 22:26:40 +0100 | [diff] [blame] | 66 | if (!led_blink) |
| 67 | sc->led_cdev.default_trigger = |
| 68 | ieee80211_get_radio_led_name(sc->hw); |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 69 | |
Felix Fietkau | 0cf55c2 | 2011-02-27 22:26:40 +0100 | [diff] [blame] | 70 | snprintf(sc->led_name, sizeof(sc->led_name), |
| 71 | "ath9k-%s", wiphy_name(sc->hw->wiphy)); |
| 72 | sc->led_cdev.name = sc->led_name; |
| 73 | sc->led_cdev.brightness_set = ath_led_brightness; |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 74 | |
Felix Fietkau | 0cf55c2 | 2011-02-27 22:26:40 +0100 | [diff] [blame] | 75 | ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &sc->led_cdev); |
| 76 | if (ret < 0) |
| 77 | return; |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 78 | |
Felix Fietkau | 0cf55c2 | 2011-02-27 22:26:40 +0100 | [diff] [blame] | 79 | sc->led_registered = true; |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 80 | } |
Felix Fietkau | 0cf55c2 | 2011-02-27 22:26:40 +0100 | [diff] [blame] | 81 | #endif |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 82 | |
| 83 | /*******************/ |
| 84 | /* Rfkill */ |
| 85 | /*******************/ |
| 86 | |
| 87 | static bool ath_is_rfkill_set(struct ath_softc *sc) |
| 88 | { |
| 89 | struct ath_hw *ah = sc->sc_ah; |
Mohammed Shafi Shajakhan | 9082631 | 2011-09-28 16:56:10 +0530 | [diff] [blame] | 90 | bool is_blocked; |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 91 | |
Mohammed Shafi Shajakhan | 9082631 | 2011-09-28 16:56:10 +0530 | [diff] [blame] | 92 | ath9k_ps_wakeup(sc); |
| 93 | is_blocked = ath9k_hw_gpio_get(ah, ah->rfkill_gpio) == |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 94 | ah->rfkill_polarity; |
Mohammed Shafi Shajakhan | 9082631 | 2011-09-28 16:56:10 +0530 | [diff] [blame] | 95 | ath9k_ps_restore(sc); |
| 96 | |
| 97 | return is_blocked; |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 98 | } |
| 99 | |
| 100 | void ath9k_rfkill_poll_state(struct ieee80211_hw *hw) |
| 101 | { |
Felix Fietkau | 9ac58615 | 2011-01-24 19:23:18 +0100 | [diff] [blame] | 102 | struct ath_softc *sc = hw->priv; |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 103 | bool blocked = !!ath_is_rfkill_set(sc); |
| 104 | |
| 105 | wiphy_rfkill_set_hw_state(hw->wiphy, blocked); |
| 106 | } |
| 107 | |
| 108 | void ath_start_rfkill_poll(struct ath_softc *sc) |
| 109 | { |
| 110 | struct ath_hw *ah = sc->sc_ah; |
| 111 | |
| 112 | if (ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT) |
| 113 | wiphy_rfkill_start_polling(sc->hw->wiphy); |
| 114 | } |
| 115 | |
Sujith Manoharan | 4daa776 | 2012-02-22 12:40:44 +0530 | [diff] [blame] | 116 | #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT |
| 117 | |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 118 | /******************/ |
| 119 | /* BTCOEX */ |
| 120 | /******************/ |
| 121 | |
| 122 | /* |
| 123 | * Detects if there is any priority bt traffic |
| 124 | */ |
| 125 | static void ath_detect_bt_priority(struct ath_softc *sc) |
| 126 | { |
| 127 | struct ath_btcoex *btcoex = &sc->btcoex; |
| 128 | struct ath_hw *ah = sc->sc_ah; |
| 129 | |
| 130 | if (ath9k_hw_gpio_get(sc->sc_ah, ah->btcoex_hw.btpriority_gpio)) |
| 131 | btcoex->bt_priority_cnt++; |
| 132 | |
| 133 | if (time_after(jiffies, btcoex->bt_priority_time + |
| 134 | msecs_to_jiffies(ATH_BT_PRIORITY_TIME_THRESHOLD))) { |
Sujith Manoharan | e6930c4 | 2012-06-04 16:27:58 +0530 | [diff] [blame^] | 135 | clear_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags); |
| 136 | clear_bit(BT_OP_SCAN, &btcoex->op_flags); |
Vasanthakumar Thiagarajan | 58da131 | 2010-01-21 11:17:27 +0530 | [diff] [blame] | 137 | /* Detect if colocated bt started scanning */ |
| 138 | if (btcoex->bt_priority_cnt >= ATH_BT_CNT_SCAN_THRESHOLD) { |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 139 | ath_dbg(ath9k_hw_common(sc->sc_ah), BTCOEX, |
Joe Perches | 226afe6 | 2010-12-02 19:12:37 -0800 | [diff] [blame] | 140 | "BT scan detected\n"); |
Sujith Manoharan | e6930c4 | 2012-06-04 16:27:58 +0530 | [diff] [blame^] | 141 | set_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags); |
| 142 | set_bit(BT_OP_SCAN, &btcoex->op_flags); |
Vasanthakumar Thiagarajan | 58da131 | 2010-01-21 11:17:27 +0530 | [diff] [blame] | 143 | } else if (btcoex->bt_priority_cnt >= ATH_BT_CNT_THRESHOLD) { |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 144 | ath_dbg(ath9k_hw_common(sc->sc_ah), BTCOEX, |
Joe Perches | 226afe6 | 2010-12-02 19:12:37 -0800 | [diff] [blame] | 145 | "BT priority traffic detected\n"); |
Sujith Manoharan | e6930c4 | 2012-06-04 16:27:58 +0530 | [diff] [blame^] | 146 | set_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags); |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 147 | } |
| 148 | |
| 149 | btcoex->bt_priority_cnt = 0; |
| 150 | btcoex->bt_priority_time = jiffies; |
| 151 | } |
| 152 | } |
| 153 | |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 154 | static void ath9k_gen_timer_start(struct ath_hw *ah, |
| 155 | struct ath_gen_timer *timer, |
Vasanthakumar Thiagarajan | 788f687 | 2011-04-21 18:33:27 +0530 | [diff] [blame] | 156 | u32 trig_timeout, |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 157 | u32 timer_period) |
| 158 | { |
Vasanthakumar Thiagarajan | 788f687 | 2011-04-21 18:33:27 +0530 | [diff] [blame] | 159 | ath9k_hw_gen_timer_start(ah, timer, trig_timeout, timer_period); |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 160 | |
Pavel Roskin | 3069168 | 2010-03-31 18:05:31 -0400 | [diff] [blame] | 161 | if ((ah->imask & ATH9K_INT_GENTIMER) == 0) { |
Felix Fietkau | 4df3071 | 2010-11-08 20:54:47 +0100 | [diff] [blame] | 162 | ath9k_hw_disable_interrupts(ah); |
Pavel Roskin | 3069168 | 2010-03-31 18:05:31 -0400 | [diff] [blame] | 163 | ah->imask |= ATH9K_INT_GENTIMER; |
Felix Fietkau | 72d874c | 2011-10-08 20:06:19 +0200 | [diff] [blame] | 164 | ath9k_hw_set_interrupts(ah); |
Rajkumar Manoharan | b037b69 | 2011-08-05 18:59:40 +0530 | [diff] [blame] | 165 | ath9k_hw_enable_interrupts(ah); |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 166 | } |
| 167 | } |
| 168 | |
| 169 | static void ath9k_gen_timer_stop(struct ath_hw *ah, struct ath_gen_timer *timer) |
| 170 | { |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 171 | struct ath_gen_timer_table *timer_table = &ah->hw_gen_timers; |
| 172 | |
| 173 | ath9k_hw_gen_timer_stop(ah, timer); |
| 174 | |
| 175 | /* if no timer is enabled, turn off interrupt mask */ |
| 176 | if (timer_table->timer_mask.val == 0) { |
Felix Fietkau | 4df3071 | 2010-11-08 20:54:47 +0100 | [diff] [blame] | 177 | ath9k_hw_disable_interrupts(ah); |
Pavel Roskin | 3069168 | 2010-03-31 18:05:31 -0400 | [diff] [blame] | 178 | ah->imask &= ~ATH9K_INT_GENTIMER; |
Felix Fietkau | 72d874c | 2011-10-08 20:06:19 +0200 | [diff] [blame] | 179 | ath9k_hw_set_interrupts(ah); |
Rajkumar Manoharan | b037b69 | 2011-08-05 18:59:40 +0530 | [diff] [blame] | 180 | ath9k_hw_enable_interrupts(ah); |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 181 | } |
| 182 | } |
| 183 | |
| 184 | /* |
| 185 | * This is the master bt coex timer which runs for every |
| 186 | * 45ms, bt traffic will be given priority during 55% of this |
| 187 | * period while wlan gets remaining 45% |
| 188 | */ |
| 189 | static void ath_btcoex_period_timer(unsigned long data) |
| 190 | { |
| 191 | struct ath_softc *sc = (struct ath_softc *) data; |
| 192 | struct ath_hw *ah = sc->sc_ah; |
| 193 | struct ath_btcoex *btcoex = &sc->btcoex; |
Vasanthakumar Thiagarajan | 58da131 | 2010-01-21 11:17:27 +0530 | [diff] [blame] | 194 | u32 timer_period; |
| 195 | bool is_btscan; |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 196 | |
Vivek Natarajan | a039a99 | 2011-04-26 10:39:55 +0530 | [diff] [blame] | 197 | ath9k_ps_wakeup(sc); |
Rajkumar Manoharan | 7dc181c | 2011-10-24 18:19:49 +0530 | [diff] [blame] | 198 | if (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI)) |
| 199 | ath_detect_bt_priority(sc); |
Sujith Manoharan | e6930c4 | 2012-06-04 16:27:58 +0530 | [diff] [blame^] | 200 | is_btscan = test_bit(BT_OP_SCAN, &btcoex->op_flags); |
Vasanthakumar Thiagarajan | 58da131 | 2010-01-21 11:17:27 +0530 | [diff] [blame] | 201 | |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 202 | spin_lock_bh(&btcoex->btcoex_lock); |
| 203 | |
Vivek Natarajan | 978f78b | 2011-04-26 10:39:52 +0530 | [diff] [blame] | 204 | ath9k_hw_btcoex_bt_stomp(ah, is_btscan ? ATH_BTCOEX_STOMP_ALL : |
Vasanthakumar Thiagarajan | 58da131 | 2010-01-21 11:17:27 +0530 | [diff] [blame] | 205 | btcoex->bt_stomp_type); |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 206 | |
Rajkumar Manoharan | bc6d5c2 | 2011-11-12 19:35:46 +0530 | [diff] [blame] | 207 | ath9k_hw_btcoex_enable(ah); |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 208 | spin_unlock_bh(&btcoex->btcoex_lock); |
| 209 | |
| 210 | if (btcoex->btcoex_period != btcoex->btcoex_no_stomp) { |
| 211 | if (btcoex->hw_timer_enabled) |
| 212 | ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer); |
| 213 | |
Vasanthakumar Thiagarajan | 58da131 | 2010-01-21 11:17:27 +0530 | [diff] [blame] | 214 | timer_period = is_btscan ? btcoex->btscan_no_stomp : |
| 215 | btcoex->btcoex_no_stomp; |
Vasanthakumar Thiagarajan | 788f687 | 2011-04-21 18:33:27 +0530 | [diff] [blame] | 216 | ath9k_gen_timer_start(ah, btcoex->no_stomp_timer, timer_period, |
Felix Fietkau | 8eb1dab | 2010-10-15 20:03:32 +0200 | [diff] [blame] | 217 | timer_period * 10); |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 218 | btcoex->hw_timer_enabled = true; |
| 219 | } |
| 220 | |
Vivek Natarajan | a039a99 | 2011-04-26 10:39:55 +0530 | [diff] [blame] | 221 | ath9k_ps_restore(sc); |
Rajkumar Manoharan | 7dc181c | 2011-10-24 18:19:49 +0530 | [diff] [blame] | 222 | timer_period = btcoex->btcoex_period / 1000; |
Sujith Manoharan | e6930c4 | 2012-06-04 16:27:58 +0530 | [diff] [blame^] | 223 | mod_timer(&btcoex->period_timer, jiffies + msecs_to_jiffies(timer_period)); |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 224 | } |
| 225 | |
| 226 | /* |
| 227 | * Generic tsf based hw timer which configures weight |
| 228 | * registers to time slice between wlan and bt traffic |
| 229 | */ |
| 230 | static void ath_btcoex_no_stomp_timer(void *arg) |
| 231 | { |
| 232 | struct ath_softc *sc = (struct ath_softc *)arg; |
| 233 | struct ath_hw *ah = sc->sc_ah; |
| 234 | struct ath_btcoex *btcoex = &sc->btcoex; |
Vivek Natarajan | d99eeb8 | 2010-08-18 19:57:48 +0530 | [diff] [blame] | 235 | struct ath_common *common = ath9k_hw_common(ah); |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 236 | |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 237 | ath_dbg(common, BTCOEX, "no stomp timer running\n"); |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 238 | |
Vivek Natarajan | a039a99 | 2011-04-26 10:39:55 +0530 | [diff] [blame] | 239 | ath9k_ps_wakeup(sc); |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 240 | spin_lock_bh(&btcoex->btcoex_lock); |
| 241 | |
Sujith Manoharan | e6930c4 | 2012-06-04 16:27:58 +0530 | [diff] [blame^] | 242 | if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_LOW || |
| 243 | test_bit(BT_OP_SCAN, &btcoex->op_flags)) |
Vivek Natarajan | 978f78b | 2011-04-26 10:39:52 +0530 | [diff] [blame] | 244 | ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_NONE); |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 245 | else if (btcoex->bt_stomp_type == ATH_BTCOEX_STOMP_ALL) |
Vivek Natarajan | 978f78b | 2011-04-26 10:39:52 +0530 | [diff] [blame] | 246 | ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_LOW); |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 247 | |
Rajkumar Manoharan | bc6d5c2 | 2011-11-12 19:35:46 +0530 | [diff] [blame] | 248 | ath9k_hw_btcoex_enable(ah); |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 249 | spin_unlock_bh(&btcoex->btcoex_lock); |
Vivek Natarajan | a039a99 | 2011-04-26 10:39:55 +0530 | [diff] [blame] | 250 | ath9k_ps_restore(sc); |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 251 | } |
| 252 | |
Sujith Manoharan | df198b1 | 2012-02-22 12:40:27 +0530 | [diff] [blame] | 253 | static int ath_init_btcoex_timer(struct ath_softc *sc) |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 254 | { |
| 255 | struct ath_btcoex *btcoex = &sc->btcoex; |
| 256 | |
| 257 | btcoex->btcoex_period = ATH_BTCOEX_DEF_BT_PERIOD * 1000; |
| 258 | btcoex->btcoex_no_stomp = (100 - ATH_BTCOEX_DEF_DUTY_CYCLE) * |
| 259 | btcoex->btcoex_period / 100; |
Vasanthakumar Thiagarajan | 58da131 | 2010-01-21 11:17:27 +0530 | [diff] [blame] | 260 | btcoex->btscan_no_stomp = (100 - ATH_BTCOEX_BTSCAN_DUTY_CYCLE) * |
| 261 | btcoex->btcoex_period / 100; |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 262 | |
| 263 | setup_timer(&btcoex->period_timer, ath_btcoex_period_timer, |
| 264 | (unsigned long) sc); |
| 265 | |
| 266 | spin_lock_init(&btcoex->btcoex_lock); |
| 267 | |
| 268 | btcoex->no_stomp_timer = ath_gen_timer_alloc(sc->sc_ah, |
| 269 | ath_btcoex_no_stomp_timer, |
| 270 | ath_btcoex_no_stomp_timer, |
| 271 | (void *) sc, AR_FIRST_NDP_TIMER); |
| 272 | |
| 273 | if (!btcoex->no_stomp_timer) |
| 274 | return -ENOMEM; |
| 275 | |
| 276 | return 0; |
| 277 | } |
| 278 | |
| 279 | /* |
| 280 | * (Re)start btcoex timers |
| 281 | */ |
| 282 | void ath9k_btcoex_timer_resume(struct ath_softc *sc) |
| 283 | { |
| 284 | struct ath_btcoex *btcoex = &sc->btcoex; |
| 285 | struct ath_hw *ah = sc->sc_ah; |
| 286 | |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 287 | ath_dbg(ath9k_hw_common(ah), BTCOEX, "Starting btcoex timers\n"); |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 288 | |
| 289 | /* make sure duty cycle timer is also stopped when resuming */ |
| 290 | if (btcoex->hw_timer_enabled) |
| 291 | ath9k_gen_timer_stop(sc->sc_ah, btcoex->no_stomp_timer); |
| 292 | |
| 293 | btcoex->bt_priority_cnt = 0; |
| 294 | btcoex->bt_priority_time = jiffies; |
Sujith Manoharan | e6930c4 | 2012-06-04 16:27:58 +0530 | [diff] [blame^] | 295 | btcoex->op_flags &= ~(BT_OP_PRIORITY_DETECTED | BT_OP_SCAN); |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 296 | |
| 297 | mod_timer(&btcoex->period_timer, jiffies); |
| 298 | } |
| 299 | |
| 300 | |
| 301 | /* |
| 302 | * Pause btcoex timer and bt duty cycle timer |
| 303 | */ |
| 304 | void ath9k_btcoex_timer_pause(struct ath_softc *sc) |
| 305 | { |
| 306 | struct ath_btcoex *btcoex = &sc->btcoex; |
| 307 | struct ath_hw *ah = sc->sc_ah; |
| 308 | |
Sujith | 0fca65c | 2010-01-08 10:36:00 +0530 | [diff] [blame] | 309 | del_timer_sync(&btcoex->period_timer); |
| 310 | |
| 311 | if (btcoex->hw_timer_enabled) |
| 312 | ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer); |
| 313 | |
| 314 | btcoex->hw_timer_enabled = false; |
| 315 | } |
Sujith Manoharan | 5908120 | 2012-02-22 12:40:21 +0530 | [diff] [blame] | 316 | |
Sujith Manoharan | c0ac53f | 2012-02-22 12:40:38 +0530 | [diff] [blame] | 317 | u16 ath9k_btcoex_aggr_limit(struct ath_softc *sc, u32 max_4ms_framelen) |
| 318 | { |
Sujith Manoharan | e6930c4 | 2012-06-04 16:27:58 +0530 | [diff] [blame^] | 319 | struct ath_btcoex *btcoex = &sc->btcoex; |
Sujith Manoharan | c0ac53f | 2012-02-22 12:40:38 +0530 | [diff] [blame] | 320 | struct ath_mci_profile *mci = &sc->btcoex.mci; |
| 321 | u16 aggr_limit = 0; |
| 322 | |
| 323 | if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI) && mci->aggr_limit) |
| 324 | aggr_limit = (max_4ms_framelen * mci->aggr_limit) >> 4; |
Sujith Manoharan | e6930c4 | 2012-06-04 16:27:58 +0530 | [diff] [blame^] | 325 | else if (test_bit(BT_OP_PRIORITY_DETECTED, &btcoex->op_flags)) |
Sujith Manoharan | c0ac53f | 2012-02-22 12:40:38 +0530 | [diff] [blame] | 326 | aggr_limit = min((max_4ms_framelen * 3) / 8, |
| 327 | (u32)ATH_AMPDU_LIMIT_MAX); |
| 328 | |
| 329 | return aggr_limit; |
| 330 | } |
| 331 | |
Sujith Manoharan | 56ca0db | 2012-02-22 12:40:32 +0530 | [diff] [blame] | 332 | void ath9k_btcoex_handle_interrupt(struct ath_softc *sc, u32 status) |
| 333 | { |
| 334 | struct ath_hw *ah = sc->sc_ah; |
| 335 | |
| 336 | if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE) |
| 337 | if (status & ATH9K_INT_GENTIMER) |
| 338 | ath_gen_timer_isr(sc->sc_ah); |
| 339 | |
Sujith Manoharan | 9a15858 | 2012-02-22 12:41:59 +0530 | [diff] [blame] | 340 | if (status & ATH9K_INT_MCI) |
Sujith Manoharan | 56ca0db | 2012-02-22 12:40:32 +0530 | [diff] [blame] | 341 | ath_mci_intr(sc); |
| 342 | } |
| 343 | |
Sujith Manoharan | df198b1 | 2012-02-22 12:40:27 +0530 | [diff] [blame] | 344 | void ath9k_start_btcoex(struct ath_softc *sc) |
| 345 | { |
| 346 | struct ath_hw *ah = sc->sc_ah; |
| 347 | |
| 348 | if ((ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) && |
| 349 | !ah->btcoex_hw.enabled) { |
| 350 | if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI)) |
| 351 | ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT, |
| 352 | AR_STOMP_LOW_WLAN_WGHT); |
| 353 | ath9k_hw_btcoex_enable(ah); |
| 354 | |
| 355 | if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE) |
| 356 | ath9k_btcoex_timer_resume(sc); |
| 357 | } |
| 358 | } |
| 359 | |
| 360 | void ath9k_stop_btcoex(struct ath_softc *sc) |
| 361 | { |
| 362 | struct ath_hw *ah = sc->sc_ah; |
| 363 | |
| 364 | if (ah->btcoex_hw.enabled && |
| 365 | ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) { |
| 366 | ath9k_hw_btcoex_disable(ah); |
| 367 | if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE) |
| 368 | ath9k_btcoex_timer_pause(sc); |
Rajkumar Manoharan | 0466e25 | 2012-04-19 19:13:52 +0530 | [diff] [blame] | 369 | if (AR_SREV_9462(ah)) |
Sujith Manoharan | bff2ec2 | 2012-03-12 07:51:07 +0530 | [diff] [blame] | 370 | ath_mci_flush_profile(&sc->btcoex.mci); |
Sujith Manoharan | df198b1 | 2012-02-22 12:40:27 +0530 | [diff] [blame] | 371 | } |
| 372 | } |
| 373 | |
Sujith Manoharan | 5908120 | 2012-02-22 12:40:21 +0530 | [diff] [blame] | 374 | void ath9k_deinit_btcoex(struct ath_softc *sc) |
| 375 | { |
| 376 | if ((sc->btcoex.no_stomp_timer) && |
| 377 | ath9k_hw_get_btcoex_scheme(sc->sc_ah) == ATH_BTCOEX_CFG_3WIRE) |
| 378 | ath_gen_timer_free(sc->sc_ah, sc->btcoex.no_stomp_timer); |
| 379 | |
Rajkumar Manoharan | 0466e25 | 2012-04-19 19:13:52 +0530 | [diff] [blame] | 380 | if (AR_SREV_9462(sc->sc_ah)) |
Sujith Manoharan | 5908120 | 2012-02-22 12:40:21 +0530 | [diff] [blame] | 381 | ath_mci_cleanup(sc); |
| 382 | } |
| 383 | |
| 384 | int ath9k_init_btcoex(struct ath_softc *sc) |
| 385 | { |
| 386 | struct ath_txq *txq; |
| 387 | struct ath_hw *ah = sc->sc_ah; |
| 388 | int r; |
| 389 | |
Sujith Manoharan | d68475d | 2012-02-22 12:40:49 +0530 | [diff] [blame] | 390 | ath9k_hw_btcoex_init_scheme(ah); |
| 391 | |
Sujith Manoharan | 5908120 | 2012-02-22 12:40:21 +0530 | [diff] [blame] | 392 | switch (ath9k_hw_get_btcoex_scheme(sc->sc_ah)) { |
| 393 | case ATH_BTCOEX_CFG_NONE: |
| 394 | break; |
| 395 | case ATH_BTCOEX_CFG_2WIRE: |
| 396 | ath9k_hw_btcoex_init_2wire(sc->sc_ah); |
| 397 | break; |
| 398 | case ATH_BTCOEX_CFG_3WIRE: |
| 399 | ath9k_hw_btcoex_init_3wire(sc->sc_ah); |
| 400 | r = ath_init_btcoex_timer(sc); |
| 401 | if (r) |
| 402 | return -1; |
| 403 | txq = sc->tx.txq_map[WME_AC_BE]; |
| 404 | ath9k_hw_init_btcoex_hw(sc->sc_ah, txq->axq_qnum); |
| 405 | sc->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW; |
Rajkumar Manoharan | 0466e25 | 2012-04-19 19:13:52 +0530 | [diff] [blame] | 406 | if (AR_SREV_9462(ah)) { |
| 407 | sc->btcoex.duty_cycle = ATH_BTCOEX_DEF_DUTY_CYCLE; |
| 408 | INIT_LIST_HEAD(&sc->btcoex.mci.info); |
Sujith Manoharan | 5908120 | 2012-02-22 12:40:21 +0530 | [diff] [blame] | 409 | |
Rajkumar Manoharan | 0466e25 | 2012-04-19 19:13:52 +0530 | [diff] [blame] | 410 | r = ath_mci_setup(sc); |
| 411 | if (r) |
| 412 | return r; |
Sujith Manoharan | 5908120 | 2012-02-22 12:40:21 +0530 | [diff] [blame] | 413 | |
Rajkumar Manoharan | 0466e25 | 2012-04-19 19:13:52 +0530 | [diff] [blame] | 414 | ath9k_hw_btcoex_init_mci(ah); |
| 415 | } |
Sujith Manoharan | 5908120 | 2012-02-22 12:40:21 +0530 | [diff] [blame] | 416 | |
| 417 | break; |
| 418 | default: |
| 419 | WARN_ON(1); |
| 420 | break; |
| 421 | } |
| 422 | |
| 423 | return 0; |
| 424 | } |
Sujith Manoharan | 4daa776 | 2012-02-22 12:40:44 +0530 | [diff] [blame] | 425 | |
| 426 | #endif /* CONFIG_ATH9K_BTCOEX_SUPPORT */ |