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>

2 files changed, 26 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 662ab7e9a0f0..ba5734aa46c4 100644
--- 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 ba3672f45a20..6e2f18861f5d 100644
--- 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 \