struct ath_common *common = ath9k_hw_common(ah);
while (time_out) {
- if (REG_READ(ah, address) & bit_position) {
- REG_WRITE(ah, address, bit_position);
-
- if (address == AR_MCI_INTERRUPT_RX_MSG_RAW) {
- if (bit_position &
- AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE)
- ar9003_mci_reset_req_wakeup(ah);
-
- if (bit_position &
- (AR_MCI_INTERRUPT_RX_MSG_SYS_SLEEPING |
- AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING))
- REG_WRITE(ah, AR_MCI_INTERRUPT_RAW,
- AR_MCI_INTERRUPT_REMOTE_SLEEP_UPDATE);
-
- REG_WRITE(ah, AR_MCI_INTERRUPT_RAW,
- AR_MCI_INTERRUPT_RX_MSG);
- }
- break;
- }
+ if (!(REG_READ(ah, address) & bit_position)) {
+ udelay(10);
+ time_out -= 10;
- udelay(10);
- time_out -= 10;
+ if (time_out < 0)
+ break;
+ else
+ continue;
+ }
+ REG_WRITE(ah, address, bit_position);
- if (time_out < 0)
+ if (address != AR_MCI_INTERRUPT_RX_MSG_RAW)
break;
+
+ if (bit_position & AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE)
+ ar9003_mci_reset_req_wakeup(ah);
+
+ if (bit_position & (AR_MCI_INTERRUPT_RX_MSG_SYS_SLEEPING |
+ AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING))
+ REG_WRITE(ah, AR_MCI_INTERRUPT_RAW,
+ AR_MCI_INTERRUPT_REMOTE_SLEEP_UPDATE);
+
+ REG_WRITE(ah, AR_MCI_INTERRUPT_RAW, AR_MCI_INTERRUPT_RX_MSG);
+ break;
}
if (time_out <= 0) {
struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
u32 payload[4] = {0, 0, 0, 0};
- if (!mci->bt_version_known &&
- (mci->bt_state != MCI_BT_SLEEP)) {
- MCI_GPM_SET_TYPE_OPCODE(payload,
- MCI_GPM_COEX_AGENT,
- MCI_GPM_COEX_VERSION_QUERY);
- ar9003_mci_send_message(ah, MCI_GPM, 0, payload, 16,
- wait_done, true);
- }
+ if (mci->bt_version_known ||
+ (mci->bt_state == MCI_BT_SLEEP))
+ return;
+
+ MCI_GPM_SET_TYPE_OPCODE(payload, MCI_GPM_COEX_AGENT,
+ MCI_GPM_COEX_VERSION_QUERY);
+ ar9003_mci_send_message(ah, MCI_GPM, 0, payload, 16, wait_done, true);
}
static void ar9003_mci_send_coex_version_response(struct ath_hw *ah,
struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
u32 *payload = &mci->wlan_channels[0];
- if ((mci->wlan_channels_update == true) &&
- (mci->bt_state != MCI_BT_SLEEP)) {
- MCI_GPM_SET_TYPE_OPCODE(payload,
- MCI_GPM_COEX_AGENT,
- MCI_GPM_COEX_WLAN_CHANNELS);
- ar9003_mci_send_message(ah, MCI_GPM, 0, payload, 16,
- wait_done, true);
- MCI_GPM_SET_TYPE_OPCODE(payload, 0xff, 0xff);
- }
+ if (!mci->wlan_channels_update ||
+ (mci->bt_state == MCI_BT_SLEEP))
+ return;
+
+ MCI_GPM_SET_TYPE_OPCODE(payload, MCI_GPM_COEX_AGENT,
+ MCI_GPM_COEX_WLAN_CHANNELS);
+ ar9003_mci_send_message(ah, MCI_GPM, 0, payload, 16, wait_done, true);
+ MCI_GPM_SET_TYPE_OPCODE(payload, 0xff, 0xff);
}
static void ar9003_mci_send_coex_bt_status_query(struct ath_hw *ah,
{
struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
u32 payload[4] = {0, 0, 0, 0};
- bool query_btinfo = !!(query_type & (MCI_GPM_COEX_QUERY_BT_ALL_INFO |
- MCI_GPM_COEX_QUERY_BT_TOPOLOGY));
+ bool query_btinfo;
- if (mci->bt_state != MCI_BT_SLEEP) {
-
- MCI_GPM_SET_TYPE_OPCODE(payload, MCI_GPM_COEX_AGENT,
- MCI_GPM_COEX_STATUS_QUERY);
+ if (mci->bt_state == MCI_BT_SLEEP)
+ return;
- *(((u8 *)payload) + MCI_GPM_COEX_B_BT_BITMAP) = query_type;
+ query_btinfo = !!(query_type & (MCI_GPM_COEX_QUERY_BT_ALL_INFO |
+ MCI_GPM_COEX_QUERY_BT_TOPOLOGY));
+ MCI_GPM_SET_TYPE_OPCODE(payload, MCI_GPM_COEX_AGENT,
+ MCI_GPM_COEX_STATUS_QUERY);
- /*
- * If bt_status_query message is not sent successfully,
- * then need_flush_btinfo should be set again.
- */
- if (!ar9003_mci_send_message(ah, MCI_GPM, 0, payload, 16,
- wait_done, true)) {
- if (query_btinfo)
- mci->need_flush_btinfo = true;
- }
+ *(((u8 *)payload) + MCI_GPM_COEX_B_BT_BITMAP) = query_type;
+ /*
+ * If bt_status_query message is not sent successfully,
+ * then need_flush_btinfo should be set again.
+ */
+ if (!ar9003_mci_send_message(ah, MCI_GPM, 0, payload, 16,
+ wait_done, true)) {
if (query_btinfo)
- mci->query_bt = false;
+ mci->need_flush_btinfo = true;
}
+
+ if (query_btinfo)
+ mci->query_bt = false;
}
static void ar9003_mci_send_coex_halt_bt_gpm(struct ath_hw *ah, bool halt,
ar9003_mci_remote_reset(ah, true);
ar9003_mci_send_req_wake(ah, true);
- if (ar9003_mci_wait_for_interrupt(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
- AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING, 500)) {
+ if (!ar9003_mci_wait_for_interrupt(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
+ AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING, 500))
+ goto clear_redunt;
- mci->bt_state = MCI_BT_AWAKE;
+ mci->bt_state = MCI_BT_AWAKE;
- /*
- * we don't need to send more remote_reset at this moment.
- * If BT receive first remote_reset, then BT HW will
- * be cleaned up and will be able to receive req_wake
- * and BT HW will respond sys_waking.
- * In this case, WLAN will receive BT's HW sys_waking.
- * Otherwise, if BT SW missed initial remote_reset,
- * that remote_reset will still clean up BT MCI RX,
- * and the req_wake will wake BT up,
- * and BT SW will respond this req_wake with a remote_reset and
- * sys_waking. In this case, WLAN will receive BT's SW
- * sys_waking. In either case, BT's RX is cleaned up. So we
- * don't need to reply BT's remote_reset now, if any.
- * Similarly, if in any case, WLAN can receive BT's sys_waking,
- * that means WLAN's RX is also fine.
- */
- ar9003_mci_send_sys_waking(ah, true);
- udelay(10);
+ /*
+ * we don't need to send more remote_reset at this moment.
+ * If BT receive first remote_reset, then BT HW will
+ * be cleaned up and will be able to receive req_wake
+ * and BT HW will respond sys_waking.
+ * In this case, WLAN will receive BT's HW sys_waking.
+ * Otherwise, if BT SW missed initial remote_reset,
+ * that remote_reset will still clean up BT MCI RX,
+ * and the req_wake will wake BT up,
+ * and BT SW will respond this req_wake with a remote_reset and
+ * sys_waking. In this case, WLAN will receive BT's SW
+ * sys_waking. In either case, BT's RX is cleaned up. So we
+ * don't need to reply BT's remote_reset now, if any.
+ * Similarly, if in any case, WLAN can receive BT's sys_waking,
+ * that means WLAN's RX is also fine.
+ */
+ ar9003_mci_send_sys_waking(ah, true);
+ udelay(10);
- /*
- * Set BT priority interrupt value to be 0xff to
- * avoid having too many BT PRIORITY interrupts.
- */
- REG_WRITE(ah, AR_MCI_BT_PRI0, 0xFFFFFFFF);
- REG_WRITE(ah, AR_MCI_BT_PRI1, 0xFFFFFFFF);
- REG_WRITE(ah, AR_MCI_BT_PRI2, 0xFFFFFFFF);
- REG_WRITE(ah, AR_MCI_BT_PRI3, 0xFFFFFFFF);
- REG_WRITE(ah, AR_MCI_BT_PRI, 0X000000FF);
+ /*
+ * Set BT priority interrupt value to be 0xff to
+ * avoid having too many BT PRIORITY interrupts.
+ */
+ REG_WRITE(ah, AR_MCI_BT_PRI0, 0xFFFFFFFF);
+ REG_WRITE(ah, AR_MCI_BT_PRI1, 0xFFFFFFFF);
+ REG_WRITE(ah, AR_MCI_BT_PRI2, 0xFFFFFFFF);
+ REG_WRITE(ah, AR_MCI_BT_PRI3, 0xFFFFFFFF);
+ REG_WRITE(ah, AR_MCI_BT_PRI, 0X000000FF);
- /*
- * A contention reset will be received after send out
- * sys_waking. Also BT priority interrupt bits will be set.
- * Clear those bits before the next step.
- */
+ /*
+ * A contention reset will be received after send out
+ * sys_waking. Also BT priority interrupt bits will be set.
+ * Clear those bits before the next step.
+ */
- REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
- AR_MCI_INTERRUPT_RX_MSG_CONT_RST);
- REG_WRITE(ah, AR_MCI_INTERRUPT_RAW,
- AR_MCI_INTERRUPT_BT_PRI);
+ REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
+ AR_MCI_INTERRUPT_RX_MSG_CONT_RST);
+ REG_WRITE(ah, AR_MCI_INTERRUPT_RAW, AR_MCI_INTERRUPT_BT_PRI);
- if (mci->is_2g) {
- ar9003_mci_send_lna_transfer(ah, true);
- udelay(5);
- }
+ if (mci->is_2g) {
+ ar9003_mci_send_lna_transfer(ah, true);
+ udelay(5);
+ }
- if ((mci->is_2g && !mci->update_2g5g)) {
- if (ar9003_mci_wait_for_interrupt(ah,
- AR_MCI_INTERRUPT_RX_MSG_RAW,
- AR_MCI_INTERRUPT_RX_MSG_LNA_INFO,
- mci_timeout))
- ath_dbg(common, MCI,
- "MCI WLAN has control over the LNA & BT obeys it\n");
- else
- ath_dbg(common, MCI,
- "MCI BT didn't respond to LNA_TRANS\n");
- }
+ if ((mci->is_2g && !mci->update_2g5g)) {
+ if (ar9003_mci_wait_for_interrupt(ah,
+ AR_MCI_INTERRUPT_RX_MSG_RAW,
+ AR_MCI_INTERRUPT_RX_MSG_LNA_INFO,
+ mci_timeout))
+ ath_dbg(common, MCI,
+ "MCI WLAN has control over the LNA & BT obeys it\n");
+ else
+ ath_dbg(common, MCI,
+ "MCI BT didn't respond to LNA_TRANS\n");
}
+clear_redunt:
/* Clear the extra redundant SYS_WAKING from BT */
if ((mci->bt_state == MCI_BT_AWAKE) &&
- (REG_READ_FIELD(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
- AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING)) &&
+ (REG_READ_FIELD(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
+ AR_MCI_INTERRUPT_RX_MSG_SYS_WAKING)) &&
(REG_READ_FIELD(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
AR_MCI_INTERRUPT_RX_MSG_SYS_SLEEPING) == 0)) {
REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
}
break;
}
- } else if ((recv_type == gpm_type) && (recv_opcode == gpm_opcode)) {
+ } else if ((recv_type == gpm_type) &&
+ (recv_opcode == gpm_opcode))
break;
- }
/*
* check if it's cal_grant
if (!IS_CHAN_2GHZ(chan) || (mci_hw->bt_state != MCI_BT_SLEEP))
goto exit;
- if (ar9003_mci_check_int(ah, AR_MCI_INTERRUPT_RX_MSG_REMOTE_RESET) ||
- ar9003_mci_check_int(ah, AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE)) {
+ if (!ar9003_mci_check_int(ah, AR_MCI_INTERRUPT_RX_MSG_REMOTE_RESET) &&
+ !ar9003_mci_check_int(ah, AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE))
+ goto exit;
- /*
- * BT is sleeping. Check if BT wakes up during
- * WLAN calibration. If BT wakes up during
- * WLAN calibration, need to go through all
- * message exchanges again and recal.
- */
- REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
- AR_MCI_INTERRUPT_RX_MSG_REMOTE_RESET |
- AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE);
+ /*
+ * BT is sleeping. Check if BT wakes up during
+ * WLAN calibration. If BT wakes up during
+ * WLAN calibration, need to go through all
+ * message exchanges again and recal.
+ */
+ REG_WRITE(ah, AR_MCI_INTERRUPT_RX_MSG_RAW,
+ (AR_MCI_INTERRUPT_RX_MSG_REMOTE_RESET |
+ AR_MCI_INTERRUPT_RX_MSG_REQ_WAKE));
- ar9003_mci_remote_reset(ah, true);
- ar9003_mci_send_sys_waking(ah, true);
- udelay(1);
+ ar9003_mci_remote_reset(ah, true);
+ ar9003_mci_send_sys_waking(ah, true);
+ udelay(1);
- if (IS_CHAN_2GHZ(chan))
- ar9003_mci_send_lna_transfer(ah, true);
+ if (IS_CHAN_2GHZ(chan))
+ ar9003_mci_send_lna_transfer(ah, true);
- mci_hw->bt_state = MCI_BT_AWAKE;
+ mci_hw->bt_state = MCI_BT_AWAKE;
- if (caldata) {
- caldata->done_txiqcal_once = false;
- caldata->done_txclcal_once = false;
- caldata->rtt_done = false;
- }
+ if (caldata) {
+ caldata->done_txiqcal_once = false;
+ caldata->done_txclcal_once = false;
+ caldata->rtt_done = false;
+ }
- if (!ath9k_hw_init_cal(ah, chan))
- return -EIO;
+ if (!ath9k_hw_init_cal(ah, chan))
+ return -EIO;
- }
exit:
ar9003_mci_enable_interrupt(ah);
return 0;
struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
u32 thresh;
- if (enable) {
- REG_RMW_FIELD(ah, AR_MCI_SCHD_TABLE_2,
- AR_MCI_SCHD_TABLE_2_HW_BASED, 1);
- REG_RMW_FIELD(ah, AR_MCI_SCHD_TABLE_2,
- AR_MCI_SCHD_TABLE_2_MEM_BASED, 1);
-
- if (!(mci->config & ATH_MCI_CONFIG_DISABLE_AGGR_THRESH)) {
- thresh = MS(mci->config, ATH_MCI_CONFIG_AGGR_THRESH);
- REG_RMW_FIELD(ah, AR_BTCOEX_CTRL,
- AR_BTCOEX_CTRL_AGGR_THRESH, thresh);
- REG_RMW_FIELD(ah, AR_BTCOEX_CTRL,
- AR_BTCOEX_CTRL_TIME_TO_NEXT_BT_THRESH_EN, 1);
- } else {
- REG_RMW_FIELD(ah, AR_BTCOEX_CTRL,
- AR_BTCOEX_CTRL_TIME_TO_NEXT_BT_THRESH_EN, 0);
- }
-
- REG_RMW_FIELD(ah, AR_BTCOEX_CTRL,
- AR_BTCOEX_CTRL_ONE_STEP_LOOK_AHEAD_EN, 1);
- } else {
+ if (!enable) {
REG_CLR_BIT(ah, AR_BTCOEX_CTRL,
AR_BTCOEX_CTRL_ONE_STEP_LOOK_AHEAD_EN);
+ return;
}
+ REG_RMW_FIELD(ah, AR_MCI_SCHD_TABLE_2, AR_MCI_SCHD_TABLE_2_HW_BASED, 1);
+ REG_RMW_FIELD(ah, AR_MCI_SCHD_TABLE_2,
+ AR_MCI_SCHD_TABLE_2_MEM_BASED, 1);
+
+ if (!(mci->config & ATH_MCI_CONFIG_DISABLE_AGGR_THRESH)) {
+ thresh = MS(mci->config, ATH_MCI_CONFIG_AGGR_THRESH);
+ REG_RMW_FIELD(ah, AR_BTCOEX_CTRL,
+ AR_BTCOEX_CTRL_AGGR_THRESH, thresh);
+ REG_RMW_FIELD(ah, AR_BTCOEX_CTRL,
+ AR_BTCOEX_CTRL_TIME_TO_NEXT_BT_THRESH_EN, 1);
+ } else
+ REG_RMW_FIELD(ah, AR_BTCOEX_CTRL,
+ AR_BTCOEX_CTRL_TIME_TO_NEXT_BT_THRESH_EN, 0);
+
+ REG_RMW_FIELD(ah, AR_BTCOEX_CTRL,
+ AR_BTCOEX_CTRL_ONE_STEP_LOOK_AHEAD_EN, 1);
}
void ar9003_mci_reset(struct ath_hw *ah, bool en_int, bool is_2g,
struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
u32 new_flags, to_set, to_clear;
- if (mci->update_2g5g && (mci->bt_state != MCI_BT_SLEEP)) {
- if (mci->is_2g) {
- new_flags = MCI_2G_FLAGS;
- to_clear = MCI_2G_FLAGS_CLEAR_MASK;
- to_set = MCI_2G_FLAGS_SET_MASK;
- } else {
- new_flags = MCI_5G_FLAGS;
- to_clear = MCI_5G_FLAGS_CLEAR_MASK;
- to_set = MCI_5G_FLAGS_SET_MASK;
- }
+ if (!mci->update_2g5g || (mci->bt_state == MCI_BT_SLEEP))
+ return;
- if (to_clear)
- ar9003_mci_send_coex_bt_flags(ah, wait_done,
+ if (mci->is_2g) {
+ new_flags = MCI_2G_FLAGS;
+ to_clear = MCI_2G_FLAGS_CLEAR_MASK;
+ to_set = MCI_2G_FLAGS_SET_MASK;
+ } else {
+ new_flags = MCI_5G_FLAGS;
+ to_clear = MCI_5G_FLAGS_CLEAR_MASK;
+ to_set = MCI_5G_FLAGS_SET_MASK;
+ }
+
+ if (to_clear)
+ ar9003_mci_send_coex_bt_flags(ah, wait_done,
MCI_GPM_COEX_BT_FLAGS_CLEAR,
to_clear);
- if (to_set)
- ar9003_mci_send_coex_bt_flags(ah, wait_done,
+ if (to_set)
+ ar9003_mci_send_coex_bt_flags(ah, wait_done,
MCI_GPM_COEX_BT_FLAGS_SET,
to_set);
- }
}
static void ar9003_mci_queue_unsent_gpm(struct ath_hw *ah, u8 header,
{
struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
- if (mci->update_2g5g) {
- if (mci->is_2g) {
- ar9003_mci_send_2g5g_status(ah, true);
- ar9003_mci_send_lna_transfer(ah, true);
- udelay(5);
+ if (!mci->update_2g5g)
+ return;
- REG_CLR_BIT(ah, AR_MCI_TX_CTRL,
- AR_MCI_TX_CTRL_DISABLE_LNA_UPDATE);
- REG_CLR_BIT(ah, AR_PHY_GLB_CONTROL,
- AR_BTCOEX_CTRL_BT_OWN_SPDT_CTRL);
+ if (mci->is_2g) {
+ ar9003_mci_send_2g5g_status(ah, true);
+ ar9003_mci_send_lna_transfer(ah, true);
+ udelay(5);
- if (!(mci->config & ATH_MCI_CONFIG_DISABLE_OSLA)) {
- REG_SET_BIT(ah, AR_BTCOEX_CTRL,
- AR_BTCOEX_CTRL_ONE_STEP_LOOK_AHEAD_EN);
- }
- } else {
- ar9003_mci_send_lna_take(ah, true);
- udelay(5);
-
- REG_SET_BIT(ah, AR_MCI_TX_CTRL,
- AR_MCI_TX_CTRL_DISABLE_LNA_UPDATE);
- REG_SET_BIT(ah, AR_PHY_GLB_CONTROL,
- AR_BTCOEX_CTRL_BT_OWN_SPDT_CTRL);
- REG_CLR_BIT(ah, AR_BTCOEX_CTRL,
+ REG_CLR_BIT(ah, AR_MCI_TX_CTRL,
+ AR_MCI_TX_CTRL_DISABLE_LNA_UPDATE);
+ REG_CLR_BIT(ah, AR_PHY_GLB_CONTROL,
+ AR_BTCOEX_CTRL_BT_OWN_SPDT_CTRL);
+
+ if (!(mci->config & ATH_MCI_CONFIG_DISABLE_OSLA))
+ REG_SET_BIT(ah, AR_BTCOEX_CTRL,
AR_BTCOEX_CTRL_ONE_STEP_LOOK_AHEAD_EN);
+ } else {
+ ar9003_mci_send_lna_take(ah, true);
+ udelay(5);
- ar9003_mci_send_2g5g_status(ah, true);
- }
+ REG_SET_BIT(ah, AR_MCI_TX_CTRL,
+ AR_MCI_TX_CTRL_DISABLE_LNA_UPDATE);
+ REG_SET_BIT(ah, AR_PHY_GLB_CONTROL,
+ AR_BTCOEX_CTRL_BT_OWN_SPDT_CTRL);
+ REG_CLR_BIT(ah, AR_BTCOEX_CTRL,
+ AR_BTCOEX_CTRL_ONE_STEP_LOOK_AHEAD_EN);
+
+ ar9003_mci_send_2g5g_status(ah, true);
}
}
}
if (p_data)
*p_data = more_gpm;
- }
+ }
- if (value != MCI_GPM_INVALID)
- value <<= 4;
+ if (value != MCI_GPM_INVALID)
+ value <<= 4;
- break;
+ break;
case MCI_STATE_LAST_SCHD_MSG_OFFSET:
value = MS(REG_READ(ah, AR_MCI_RX_STATUS),
AR_MCI_RX_LAST_SCHD_MSG_INDEX);
ar9003_mci_send_coex_bt_status_query(ah, true, query_type);
break;
case MCI_STATE_NEED_FLUSH_BT_INFO:
- /*
- * btcoex_hw.mci.unhalt_bt_gpm means whether it's
- * needed to send UNHALT message. It's set whenever
- * there's a request to send HALT message.
- * mci_halted_bt_gpm means whether HALT message is sent
- * out successfully.
- *
- * Checking (mci_unhalt_bt_gpm == false) instead of
- * checking (ah->mci_halted_bt_gpm == false) will make
- * sure currently is in UNHALT-ed mode and BT can
- * respond to status query.
- */
- value = (!mci->unhalt_bt_gpm &&
- mci->need_flush_btinfo) ? 1 : 0;
- if (p_data)
- mci->need_flush_btinfo =
- (*p_data != 0) ? true : false;
- break;
+ /*
+ * btcoex_hw.mci.unhalt_bt_gpm means whether it's
+ * needed to send UNHALT message. It's set whenever
+ * there's a request to send HALT message.
+ * mci_halted_bt_gpm means whether HALT message is sent
+ * out successfully.
+ *
+ * Checking (mci_unhalt_bt_gpm == false) instead of
+ * checking (ah->mci_halted_bt_gpm == false) will make
+ * sure currently is in UNHALT-ed mode and BT can
+ * respond to status query.
+ */
+ value = (!mci->unhalt_bt_gpm && mci->need_flush_btinfo) ? 1 : 0;
+ if (p_data)
+ mci->need_flush_btinfo = (*p_data != 0) ? true : false;
+ break;
case MCI_STATE_RECOVER_RX:
ar9003_mci_prep_interface(ah);
mci->query_bt = true;
projects / GitHub / exynos8895 / android_kernel_samsung_universal8895.git / commitdiff