--- /dev/null
+/*
+ * Copyright (c) 2009-2011 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 <linux/export.h>
+#include "hw.h"
+
+enum ath_bt_mode {
+ ATH_BT_COEX_MODE_LEGACY, /* legacy rx_clear mode */
+ ATH_BT_COEX_MODE_UNSLOTTED, /* untimed/unslotted mode */
+ ATH_BT_COEX_MODE_SLOTTED, /* slotted mode */
+ ATH_BT_COEX_MODE_DISABLED, /* coexistence disabled */
+};
+
+struct ath_btcoex_config {
+ u8 bt_time_extend;
+ bool bt_txstate_extend;
+ bool bt_txframe_extend;
+ enum ath_bt_mode bt_mode; /* coexistence mode */
+ bool bt_quiet_collision;
+ bool bt_rxclear_polarity; /* invert rx_clear as WLAN_ACTIVE*/
+ u8 bt_priority_time;
+ u8 bt_first_slot_time;
+ bool bt_hold_rx_clear;
+};
+
+static const u32 ar9003_wlan_weights[ATH_BTCOEX_STOMP_MAX]
+ [AR9300_NUM_WLAN_WEIGHTS] = {
+ { 0xfffffff0, 0xfffffff0, 0xfffffff0, 0xfffffff0 }, /* STOMP_ALL */
+ { 0x88888880, 0x88888880, 0x88888880, 0x88888880 }, /* STOMP_LOW */
+ { 0x00000000, 0x00000000, 0x00000000, 0x00000000 }, /* STOMP_NONE */
+};
+
+static const u32 mci_wlan_weights[ATH_BTCOEX_STOMP_MAX]
+ [AR9300_NUM_WLAN_WEIGHTS] = {
+ { 0x01017d01, 0x41414101, 0x41414101, 0x41414141 }, /* STOMP_ALL */
+ { 0x01017d01, 0x3b3b3b01, 0x3b3b3b01, 0x3b3b3b3b }, /* STOMP_LOW */
+ { 0x01017d01, 0x01010101, 0x01010101, 0x01010101 }, /* STOMP_NONE */
+ { 0x01017d01, 0x013b0101, 0x3b3b0101, 0x3b3b013b }, /* STOMP_LOW_FTP */
+ { 0xffffff01, 0xffffffff, 0xffffff01, 0xffffffff }, /* STOMP_AUDIO */
+};
+
+void ath9k_hw_init_btcoex_hw(struct ath_hw *ah, int qnum)
+{
+ struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
+ const struct ath_btcoex_config ath_bt_config = {
+ .bt_time_extend = 0,
+ .bt_txstate_extend = true,
+ .bt_txframe_extend = true,
+ .bt_mode = ATH_BT_COEX_MODE_SLOTTED,
+ .bt_quiet_collision = true,
+ .bt_rxclear_polarity = true,
+ .bt_priority_time = 2,
+ .bt_first_slot_time = 5,
+ .bt_hold_rx_clear = true,
+ };
+ bool rxclear_polarity = ath_bt_config.bt_rxclear_polarity;
+
+ if (AR_SREV_9300_20_OR_LATER(ah))
+ rxclear_polarity = !ath_bt_config.bt_rxclear_polarity;
+
+ btcoex_hw->bt_coex_mode =
+ (btcoex_hw->bt_coex_mode & AR_BT_QCU_THRESH) |
+ SM(ath_bt_config.bt_time_extend, AR_BT_TIME_EXTEND) |
+ SM(ath_bt_config.bt_txstate_extend, AR_BT_TXSTATE_EXTEND) |
+ SM(ath_bt_config.bt_txframe_extend, AR_BT_TX_FRAME_EXTEND) |
+ SM(ath_bt_config.bt_mode, AR_BT_MODE) |
+ SM(ath_bt_config.bt_quiet_collision, AR_BT_QUIET) |
+ SM(rxclear_polarity, AR_BT_RX_CLEAR_POLARITY) |
+ SM(ath_bt_config.bt_priority_time, AR_BT_PRIORITY_TIME) |
+ SM(ath_bt_config.bt_first_slot_time, AR_BT_FIRST_SLOT_TIME) |
+ SM(qnum, AR_BT_QCU_THRESH);
+
+ btcoex_hw->bt_coex_mode2 =
+ SM(ath_bt_config.bt_hold_rx_clear, AR_BT_HOLD_RX_CLEAR) |
+ SM(ATH_BTCOEX_BMISS_THRESH, AR_BT_BCN_MISS_THRESH) |
+ AR_BT_DISABLE_BT_ANT;
+}
+EXPORT_SYMBOL(ath9k_hw_init_btcoex_hw);
+
+void ath9k_hw_btcoex_init_scheme(struct ath_hw *ah)
+{
+ struct ath_common *common = ath9k_hw_common(ah);
+ struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
+
+ /*
+ * Check if BTCOEX is globally disabled.
+ */
+ if (!common->btcoex_enabled) {
+ btcoex_hw->scheme = ATH_BTCOEX_CFG_NONE;
+ return;
+ }
+
+ if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI) {
+ btcoex_hw->scheme = ATH_BTCOEX_CFG_MCI;
+ } else if (AR_SREV_9300_20_OR_LATER(ah)) {
+ btcoex_hw->scheme = ATH_BTCOEX_CFG_3WIRE;
+ btcoex_hw->btactive_gpio = ATH_BTACTIVE_GPIO_9300;
+ btcoex_hw->wlanactive_gpio = ATH_WLANACTIVE_GPIO_9300;
+ btcoex_hw->btpriority_gpio = ATH_BTPRIORITY_GPIO_9300;
+ } else if (AR_SREV_9280_20_OR_LATER(ah)) {
+ btcoex_hw->btactive_gpio = ATH_BTACTIVE_GPIO_9280;
+ btcoex_hw->wlanactive_gpio = ATH_WLANACTIVE_GPIO_9280;
+
+ if (AR_SREV_9285(ah)) {
+ btcoex_hw->scheme = ATH_BTCOEX_CFG_3WIRE;
+ btcoex_hw->btpriority_gpio = ATH_BTPRIORITY_GPIO_9285;
+ } else {
+ btcoex_hw->scheme = ATH_BTCOEX_CFG_2WIRE;
+ }
+ }
+}
+EXPORT_SYMBOL(ath9k_hw_btcoex_init_scheme);
+
+void ath9k_hw_btcoex_init_2wire(struct ath_hw *ah)
+{
+ struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
+
+ /* connect bt_active to baseband */
+ REG_CLR_BIT(ah, AR_GPIO_INPUT_EN_VAL,
+ (AR_GPIO_INPUT_EN_VAL_BT_PRIORITY_DEF |
+ AR_GPIO_INPUT_EN_VAL_BT_FREQUENCY_DEF));
+
+ REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL,
+ AR_GPIO_INPUT_EN_VAL_BT_ACTIVE_BB);
+
+ /* Set input mux for bt_active to gpio pin */
+ REG_RMW_FIELD(ah, AR_GPIO_INPUT_MUX1,
+ AR_GPIO_INPUT_MUX1_BT_ACTIVE,
+ btcoex_hw->btactive_gpio);
+
+ /* Configure the desired gpio port for input */
+ ath9k_hw_cfg_gpio_input(ah, btcoex_hw->btactive_gpio);
+}
+EXPORT_SYMBOL(ath9k_hw_btcoex_init_2wire);
+
+void ath9k_hw_btcoex_init_3wire(struct ath_hw *ah)
+{
+ struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
+
+ /* btcoex 3-wire */
+ REG_SET_BIT(ah, AR_GPIO_INPUT_EN_VAL,
+ (AR_GPIO_INPUT_EN_VAL_BT_PRIORITY_BB |
+ AR_GPIO_INPUT_EN_VAL_BT_ACTIVE_BB));
+
+ /* Set input mux for bt_prority_async and
+ * bt_active_async to GPIO pins */
+ REG_RMW_FIELD(ah, AR_GPIO_INPUT_MUX1,
+ AR_GPIO_INPUT_MUX1_BT_ACTIVE,
+ btcoex_hw->btactive_gpio);
+
+ REG_RMW_FIELD(ah, AR_GPIO_INPUT_MUX1,
+ AR_GPIO_INPUT_MUX1_BT_PRIORITY,
+ btcoex_hw->btpriority_gpio);
+
+ /* Configure the desired GPIO ports for input */
+
+ ath9k_hw_cfg_gpio_input(ah, btcoex_hw->btactive_gpio);
+ ath9k_hw_cfg_gpio_input(ah, btcoex_hw->btpriority_gpio);
+}
+EXPORT_SYMBOL(ath9k_hw_btcoex_init_3wire);
+
+void ath9k_hw_btcoex_init_mci(struct ath_hw *ah)
+{
+ ah->btcoex_hw.mci.ready = false;
+ ah->btcoex_hw.mci.bt_state = 0;
+ ah->btcoex_hw.mci.bt_ver_major = 3;
+ ah->btcoex_hw.mci.bt_ver_minor = 0;
+ ah->btcoex_hw.mci.bt_version_known = false;
+ ah->btcoex_hw.mci.update_2g5g = true;
+ ah->btcoex_hw.mci.is_2g = true;
+ ah->btcoex_hw.mci.wlan_channels_update = false;
+ ah->btcoex_hw.mci.wlan_channels[0] = 0x00000000;
+ ah->btcoex_hw.mci.wlan_channels[1] = 0xffffffff;
+ ah->btcoex_hw.mci.wlan_channels[2] = 0xffffffff;
+ ah->btcoex_hw.mci.wlan_channels[3] = 0x7fffffff;
+ ah->btcoex_hw.mci.query_bt = true;
+ ah->btcoex_hw.mci.unhalt_bt_gpm = true;
+ ah->btcoex_hw.mci.halted_bt_gpm = false;
+ ah->btcoex_hw.mci.need_flush_btinfo = false;
+ ah->btcoex_hw.mci.wlan_cal_seq = 0;
+ ah->btcoex_hw.mci.wlan_cal_done = 0;
+ ah->btcoex_hw.mci.config = (AR_SREV_9462(ah)) ? 0x2201 : 0xa4c1;
+}
+EXPORT_SYMBOL(ath9k_hw_btcoex_init_mci);
+
+static void ath9k_hw_btcoex_enable_2wire(struct ath_hw *ah)
+{
+ struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
+
+ /* Configure the desired GPIO port for TX_FRAME output */
+ ath9k_hw_cfg_output(ah, btcoex_hw->wlanactive_gpio,
+ AR_GPIO_OUTPUT_MUX_AS_TX_FRAME);
+}
+
+/*
+ * For AR9002, bt_weight/wlan_weight are used.
+ * For AR9003 and above, stomp_type is used.
+ */
+void ath9k_hw_btcoex_set_weight(struct ath_hw *ah,
+ u32 bt_weight,
+ u32 wlan_weight,
+ enum ath_stomp_type stomp_type)
+{
+ struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
+ struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;
+ u8 txprio_shift[] = { 24, 16, 16, 0 }; /* tx priority weight */
+ bool concur_tx = (mci_hw->concur_tx && btcoex_hw->tx_prio[stomp_type]);
+ const u32 *weight = ar9003_wlan_weights[stomp_type];
+ int i;
+
+ if (!AR_SREV_9300_20_OR_LATER(ah)) {
+ btcoex_hw->bt_coex_weights =
+ SM(bt_weight, AR_BTCOEX_BT_WGHT) |
+ SM(wlan_weight, AR_BTCOEX_WL_WGHT);
+ return;
+ }
+
+ if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) {
+ enum ath_stomp_type stype =
+ ((stomp_type == ATH_BTCOEX_STOMP_LOW) &&
+ btcoex_hw->mci.stomp_ftp) ?
+ ATH_BTCOEX_STOMP_LOW_FTP : stomp_type;
+ weight = mci_wlan_weights[stype];
+ }
+
+ for (i = 0; i < AR9300_NUM_WLAN_WEIGHTS; i++) {
+ btcoex_hw->bt_weight[i] = AR9300_BT_WGHT;
+ btcoex_hw->wlan_weight[i] = weight[i];
+ if (concur_tx && i) {
+ btcoex_hw->wlan_weight[i] &=
+ ~(0xff << txprio_shift[i-1]);
+ btcoex_hw->wlan_weight[i] |=
+ (btcoex_hw->tx_prio[stomp_type] <<
+ txprio_shift[i-1]);
+ }
+ }
+ /* Last WLAN weight has to be adjusted wrt tx priority */
+ if (concur_tx) {
+ btcoex_hw->wlan_weight[i-1] &= ~(0xff << txprio_shift[i-1]);
+ btcoex_hw->wlan_weight[i-1] |= (btcoex_hw->tx_prio[stomp_type]
+ << txprio_shift[i-1]);
+ }
+
+}
+EXPORT_SYMBOL(ath9k_hw_btcoex_set_weight);
+
+
+static void ath9k_hw_btcoex_enable_3wire(struct ath_hw *ah)
+{
+ struct ath_btcoex_hw *btcoex = &ah->btcoex_hw;
+ u32 val;
+ int i;
+
+ /*
+ * Program coex mode and weight registers to
+ * enable coex 3-wire
+ */
+ REG_WRITE(ah, AR_BT_COEX_MODE, btcoex->bt_coex_mode);
+ REG_WRITE(ah, AR_BT_COEX_MODE2, btcoex->bt_coex_mode2);
+
+
+ if (AR_SREV_9300_20_OR_LATER(ah)) {
+ REG_WRITE(ah, AR_BT_COEX_WL_WEIGHTS0, btcoex->wlan_weight[0]);
+ REG_WRITE(ah, AR_BT_COEX_WL_WEIGHTS1, btcoex->wlan_weight[1]);
+ for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++)
+ REG_WRITE(ah, AR_BT_COEX_BT_WEIGHTS(i),
+ btcoex->bt_weight[i]);
+ } else
+ REG_WRITE(ah, AR_BT_COEX_WEIGHT, btcoex->bt_coex_weights);
+
+
+
+ if (AR_SREV_9271(ah)) {
+ val = REG_READ(ah, 0x50040);
+ val &= 0xFFFFFEFF;
+ REG_WRITE(ah, 0x50040, val);
+ }
+
+ REG_RMW_FIELD(ah, AR_QUIET1, AR_QUIET1_QUIET_ACK_CTS_ENABLE, 1);
+ REG_RMW_FIELD(ah, AR_PCU_MISC, AR_PCU_BT_ANT_PREVENT_RX, 0);
+
+ ath9k_hw_cfg_output(ah, btcoex->wlanactive_gpio,
+ AR_GPIO_OUTPUT_MUX_AS_RX_CLEAR_EXTERNAL);
+}
+
+static void ath9k_hw_btcoex_enable_mci(struct ath_hw *ah)
+{
+ struct ath_btcoex_hw *btcoex = &ah->btcoex_hw;
+ int i;
+
+ for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++)
+ REG_WRITE(ah, AR_MCI_COEX_WL_WEIGHTS(i),
+ btcoex->wlan_weight[i]);
+
+ REG_RMW_FIELD(ah, AR_QUIET1, AR_QUIET1_QUIET_ACK_CTS_ENABLE, 1);
+ btcoex->enabled = true;
+}
+
+static void ath9k_hw_btcoex_disable_mci(struct ath_hw *ah)
+{
+ struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
+ int i;
+
+ ath9k_hw_btcoex_bt_stomp(ah, ATH_BTCOEX_STOMP_NONE);
+
+ for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++)
+ REG_WRITE(ah, AR_MCI_COEX_WL_WEIGHTS(i),
+ btcoex_hw->wlan_weight[i]);
+}
+
+void ath9k_hw_btcoex_enable(struct ath_hw *ah)
+{
+ struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
+
+ switch (ath9k_hw_get_btcoex_scheme(ah)) {
+ case ATH_BTCOEX_CFG_NONE:
+ return;
+ case ATH_BTCOEX_CFG_2WIRE:
+ ath9k_hw_btcoex_enable_2wire(ah);
+ break;
+ case ATH_BTCOEX_CFG_3WIRE:
+ ath9k_hw_btcoex_enable_3wire(ah);
+ break;
+ case ATH_BTCOEX_CFG_MCI:
+ ath9k_hw_btcoex_enable_mci(ah);
+ break;
+ }
+
+ if (ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_MCI) {
+ REG_RMW(ah, AR_GPIO_PDPU,
+ (0x2 << (btcoex_hw->btactive_gpio * 2)),
+ (0x3 << (btcoex_hw->btactive_gpio * 2)));
+ }
+
+ ah->btcoex_hw.enabled = true;
+}
+EXPORT_SYMBOL(ath9k_hw_btcoex_enable);
+
+void ath9k_hw_btcoex_disable(struct ath_hw *ah)
+{
+ struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw;
+ int i;
+
+ btcoex_hw->enabled = false;
+
+ if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_MCI) {
+ ath9k_hw_btcoex_disable_mci(ah);
+ return;
+ }
+
+ if (!AR_SREV_9300_20_OR_LATER(ah))
+ ath9k_hw_set_gpio(ah, btcoex_hw->wlanactive_gpio, 0);
+
+ ath9k_hw_cfg_output(ah, btcoex_hw->wlanactive_gpio,
+ AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
+
+ if (btcoex_hw->scheme == ATH_BTCOEX_CFG_3WIRE) {
+ REG_WRITE(ah, AR_BT_COEX_MODE, AR_BT_QUIET | AR_BT_MODE);
+ REG_WRITE(ah, AR_BT_COEX_MODE2, 0);
+
+ if (AR_SREV_9300_20_OR_LATER(ah)) {
+ REG_WRITE(ah, AR_BT_COEX_WL_WEIGHTS0, 0);
+ REG_WRITE(ah, AR_BT_COEX_WL_WEIGHTS1, 0);
+ for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++)
+ REG_WRITE(ah, AR_BT_COEX_BT_WEIGHTS(i), 0);
+ } else
+ REG_WRITE(ah, AR_BT_COEX_WEIGHT, 0);
+
+ }
+}
+EXPORT_SYMBOL(ath9k_hw_btcoex_disable);
+
+/*
+ * Configures appropriate weight based on stomp type.
+ */
+void ath9k_hw_btcoex_bt_stomp(struct ath_hw *ah,
+ enum ath_stomp_type stomp_type)
+{
+ if (AR_SREV_9300_20_OR_LATER(ah)) {
+ ath9k_hw_btcoex_set_weight(ah, 0, 0, stomp_type);
+ return;
+ }
+
+ switch (stomp_type) {
+ case ATH_BTCOEX_STOMP_ALL:
+ ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
+ AR_STOMP_ALL_WLAN_WGHT, 0);
+ break;
+ case ATH_BTCOEX_STOMP_LOW:
+ ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
+ AR_STOMP_LOW_WLAN_WGHT, 0);
+ break;
+ case ATH_BTCOEX_STOMP_NONE:
+ ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
+ AR_STOMP_NONE_WLAN_WGHT, 0);
+ break;
+ default:
+ ath_dbg(ath9k_hw_common(ah), BTCOEX, "Invalid Stomptype\n");
+ break;
+ }
+}
+EXPORT_SYMBOL(ath9k_hw_btcoex_bt_stomp);
+
+void ath9k_hw_btcoex_set_concur_txprio(struct ath_hw *ah, u8 *stomp_txprio)
+{
+ struct ath_btcoex_hw *btcoex = &ah->btcoex_hw;
+ int i;
+
+ for (i = 0; i < ATH_BTCOEX_STOMP_MAX; i++)
+ btcoex->tx_prio[i] = stomp_txprio[i];
+}
+EXPORT_SYMBOL(ath9k_hw_btcoex_set_concur_txprio);
Code Review / kvmfornfv.git / blobdiff