ath9k_hw: MCI related changes in chip management

send halt BT GPM if the chip is in network sleep and BT state
is awake

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>

diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 662ab7e..ba5734a 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1933,6 +1933,7 @@ static bool ath9k_hw_set_power_awake(struct ath_hw *ah, int setChip)
 bool ath9k_hw_setpower(struct ath_hw *ah, enum ath9k_power_mode mode)
 {
        struct ath_common *common = ath9k_hw_common(ah);
+       struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
        int status = true, setChip = true;
        static const char *modes[] = {
                "AWAKE",
@@ -1950,12 +1951,35 @@ bool ath9k_hw_setpower(struct ath_hw *ah, enum ath9k_power_mode mode)
        switch (mode) {
        case ATH9K_PM_AWAKE:
                status = ath9k_hw_set_power_awake(ah, setChip);
+
+               if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI)
+                       REG_WRITE(ah, AR_RTC_KEEP_AWAKE, 0x2);
+
                break;
        case ATH9K_PM_FULL_SLEEP:
+
+               if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI) {
+                       if (ar9003_mci_state(ah, MCI_STATE_ENABLE, NULL) &&
+                               (mci->bt_state != MCI_BT_SLEEP) &&
+                               !mci->halted_bt_gpm) {
+                               ath_dbg(common, ATH_DBG_MCI, "MCI halt BT GPM"
+                                               "(full_sleep)");
+                               ar9003_mci_send_coex_halt_bt_gpm(ah,
+                                                                true, true);
+                       }
+
+                       mci->ready = false;
+                       REG_WRITE(ah, AR_RTC_KEEP_AWAKE, 0x2);
+               }
+
                ath9k_set_power_sleep(ah, setChip);
                ah->chip_fullsleep = true;
                break;
        case ATH9K_PM_NETWORK_SLEEP:
+
+               if (ah->caps.hw_caps & ATH9K_HW_CAP_MCI)
+                       REG_WRITE(ah, AR_RTC_KEEP_AWAKE, 0x2);
+
                ath9k_set_power_network_sleep(ah, setChip);
                break;
        default:

diff --git a/drivers/net/wireless/ath/ath9k/reg.h b/drivers/net/wireless/ath/ath9k/reg.h
index ba3672f..6e2f188 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/reg.h
+++ b/drivers/net/wireless/ath/ath9k/reg.h
@@ -1279,6 +1279,8 @@ enum {
 #define AR_RTC_INTR_MASK \
        ((AR_SREV_9100(ah)) ? (AR_RTC_BASE + 0x0058) : 0x7058)
 
+#define AR_RTC_KEEP_AWAKE      0x7034
+
 /* RTC_DERIVED_* - only for AR9100 */
 
 #define AR_RTC_DERIVED_CLK \