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ath9k_hw: Add support for MCI WLAN calibration

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WLAN communicates with BT for its calibration by sending WLAN_CAL_REQ,
waits for BT_CAL_GRANT. This is done with the help of GPM messages.
also WLAN_CAL_DONE messages is sent once WLAN calibration is done.

Cc: Wilson Tsao <wtsao@qca.qualcomm.com>
Cc: Senthil Balasubramanian <senthilb@qca.qualcomm.com>
Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Mohammed Shafi Shajakhan 2011-11-30 10:41:26 +05:30 committed by John W. Linville
parent 7a9233ff6d
commit 3ebfcdc43a
1 changed files with 43 additions and 0 deletions
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43
drivers/net/wireless/ath/ath9k/ar9003_calib.c
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@ -18,6 +18,7 @@
#include "hw-ops.h"
#include "ar9003_phy.h"
#include "ar9003_rtt.h"
#include "ar9003_mci.h"
#define MAX_MEASUREMENT MAX_IQCAL_MEASUREMENT
#define MAX_MAG_DELTA 11
@ -934,10 +935,12 @@ static bool ar9003_hw_init_cal(struct ath_hw *ah,
{
struct ath_common *common = ath9k_hw_common(ah);
struct ath9k_hw_cal_data *caldata = ah->caldata;
struct ath9k_hw_mci *mci_hw = &ah->btcoex_hw.mci;
bool txiqcal_done = false, txclcal_done = false;
bool is_reusable = true, status = true;
bool run_rtt_cal = false, run_agc_cal;
bool rtt = !!(ah->caps.hw_caps & ATH9K_HW_CAP_RTT);
bool mci = !!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI);
u32 agc_ctrl = 0, agc_supp_cals = AR_PHY_AGC_CONTROL_OFFSET_CAL |
AR_PHY_AGC_CONTROL_FLTR_CAL |
AR_PHY_AGC_CONTROL_PKDET_CAL;
@ -1005,6 +1008,31 @@ static bool ar9003_hw_init_cal(struct ath_hw *ah,
} else if (caldata && !caldata->done_txiqcal_once)
run_agc_cal = true;
if (mci && IS_CHAN_2GHZ(chan) &&
(mci_hw->bt_state == MCI_BT_AWAKE) &&
run_agc_cal &&
!(mci_hw->config & ATH_MCI_CONFIG_DISABLE_MCI_CAL)) {
u32 pld[4] = {0, 0, 0, 0};
/* send CAL_REQ only when BT is AWAKE. */
ath_dbg(common, ATH_DBG_MCI, "MCI send WLAN_CAL_REQ 0x%x\n",
mci_hw->wlan_cal_seq);
MCI_GPM_SET_CAL_TYPE(pld, MCI_GPM_WLAN_CAL_REQ);
pld[MCI_GPM_WLAN_CAL_W_SEQUENCE] = mci_hw->wlan_cal_seq++;
ar9003_mci_send_message(ah, MCI_GPM, 0, pld, 16, true, false);
/* Wait BT_CAL_GRANT for 50ms */
ath_dbg(common, ATH_DBG_MCI, "MCI wait for BT_CAL_GRANT");
if (ar9003_mci_wait_for_gpm(ah, MCI_GPM_BT_CAL_GRANT, 0, 50000))
ath_dbg(common, ATH_DBG_MCI, "MCI got BT_CAL_GRANT");
else {
is_reusable = false;
ath_dbg(common, ATH_DBG_MCI, "\nMCI BT is not responding");
}
}
txiqcal_done = ar9003_hw_tx_iq_cal_run(ah);
REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_DIS);
udelay(5);
@ -1022,6 +1050,21 @@ skip_tx_iqcal:
AR_PHY_AGC_CONTROL_CAL,
0, AH_WAIT_TIMEOUT);
}
if (mci && IS_CHAN_2GHZ(chan) &&
(mci_hw->bt_state == MCI_BT_AWAKE) &&
run_agc_cal &&
!(mci_hw->config & ATH_MCI_CONFIG_DISABLE_MCI_CAL)) {
u32 pld[4] = {0, 0, 0, 0};
ath_dbg(common, ATH_DBG_MCI, "MCI Send WLAN_CAL_DONE 0x%x\n",
mci_hw->wlan_cal_done);
MCI_GPM_SET_CAL_TYPE(pld, MCI_GPM_WLAN_CAL_DONE);
pld[MCI_GPM_WLAN_CAL_W_SEQUENCE] = mci_hw->wlan_cal_done++;
ar9003_mci_send_message(ah, MCI_GPM, 0, pld, 16, true, false);
}
if (rtt && !run_rtt_cal) {
agc_ctrl |= agc_supp_cals;
REG_WRITE(ah, AR_PHY_AGC_CONTROL, agc_ctrl);