ath9k: Handle 2-ANT AR9565 in MCI reset

The value programmed in the BTCOEX control register
is different for each chip. This patch adds support
for 2-ANT, 1-ANT solutions based on AR9565.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mci.c b/drivers/net/wireless/ath/ath9k/ar9003_mci.c
index 4aed985..1a48528 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/ar9003_mci.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_mci.c
@@ -821,6 +821,61 @@ static void ar9003_mci_osla_setup(struct ath_hw *ah, bool enable)
                      AR_BTCOEX_CTRL_ONE_STEP_LOOK_AHEAD_EN, 1);
 }
 
+static void ar9003_mci_set_btcoex_ctrl_9565_1ANT(struct ath_hw *ah)
+{
+       u32 regval;
+
+       regval = SM(1, AR_BTCOEX_CTRL_AR9462_MODE) |
+                SM(1, AR_BTCOEX_CTRL_WBTIMER_EN) |
+                SM(1, AR_BTCOEX_CTRL_PA_SHARED) |
+                SM(1, AR_BTCOEX_CTRL_LNA_SHARED) |
+                SM(1, AR_BTCOEX_CTRL_NUM_ANTENNAS) |
+                SM(1, AR_BTCOEX_CTRL_RX_CHAIN_MASK) |
+                SM(0, AR_BTCOEX_CTRL_1_CHAIN_ACK) |
+                SM(0, AR_BTCOEX_CTRL_1_CHAIN_BCN) |
+                SM(0, AR_BTCOEX_CTRL_ONE_STEP_LOOK_AHEAD_EN);
+
+       REG_RMW_FIELD(ah, AR_BTCOEX_CTRL2,
+                     AR_BTCOEX_CTRL2_TX_CHAIN_MASK, 0x1);
+       REG_WRITE(ah, AR_BTCOEX_CTRL, regval);
+}
+
+static void ar9003_mci_set_btcoex_ctrl_9565_2ANT(struct ath_hw *ah)
+{
+       u32 regval;
+
+       regval = SM(1, AR_BTCOEX_CTRL_AR9462_MODE) |
+                SM(1, AR_BTCOEX_CTRL_WBTIMER_EN) |
+                SM(0, AR_BTCOEX_CTRL_PA_SHARED) |
+                SM(0, AR_BTCOEX_CTRL_LNA_SHARED) |
+                SM(2, AR_BTCOEX_CTRL_NUM_ANTENNAS) |
+                SM(1, AR_BTCOEX_CTRL_RX_CHAIN_MASK) |
+                SM(0, AR_BTCOEX_CTRL_1_CHAIN_ACK) |
+                SM(0, AR_BTCOEX_CTRL_1_CHAIN_BCN) |
+                SM(0, AR_BTCOEX_CTRL_ONE_STEP_LOOK_AHEAD_EN);
+
+       REG_RMW_FIELD(ah, AR_BTCOEX_CTRL2,
+                     AR_BTCOEX_CTRL2_TX_CHAIN_MASK, 0x0);
+       REG_WRITE(ah, AR_BTCOEX_CTRL, regval);
+}
+
+static void ar9003_mci_set_btcoex_ctrl_9462(struct ath_hw *ah)
+{
+       u32 regval;
+
+        regval = SM(1, AR_BTCOEX_CTRL_AR9462_MODE) |
+                SM(1, AR_BTCOEX_CTRL_WBTIMER_EN) |
+                SM(1, AR_BTCOEX_CTRL_PA_SHARED) |
+                SM(1, AR_BTCOEX_CTRL_LNA_SHARED) |
+                SM(2, AR_BTCOEX_CTRL_NUM_ANTENNAS) |
+                SM(3, AR_BTCOEX_CTRL_RX_CHAIN_MASK) |
+                SM(0, AR_BTCOEX_CTRL_1_CHAIN_ACK) |
+                SM(0, AR_BTCOEX_CTRL_1_CHAIN_BCN) |
+                SM(0, AR_BTCOEX_CTRL_ONE_STEP_LOOK_AHEAD_EN);
+
+       REG_WRITE(ah, AR_BTCOEX_CTRL, regval);
+}
+
 int ar9003_mci_reset(struct ath_hw *ah, bool en_int, bool is_2g,
                     bool is_full_sleep)
 {
@@ -845,26 +900,17 @@ int ar9003_mci_reset(struct ath_hw *ah, bool en_int, bool is_2g,
        * To avoid MCI state machine be affected by incoming remote MCI msgs,
        * MCI mode will be enabled later, right before reset the MCI TX and RX.
        */
-
-       regval = SM(1, AR_BTCOEX_CTRL_AR9462_MODE) |
-                SM(1, AR_BTCOEX_CTRL_WBTIMER_EN) |
-                SM(1, AR_BTCOEX_CTRL_PA_SHARED) |
-                SM(1, AR_BTCOEX_CTRL_LNA_SHARED) |
-                SM(0, AR_BTCOEX_CTRL_1_CHAIN_ACK) |
-                SM(0, AR_BTCOEX_CTRL_1_CHAIN_BCN) |
-                SM(0, AR_BTCOEX_CTRL_ONE_STEP_LOOK_AHEAD_EN);
        if (AR_SREV_9565(ah)) {
-               regval |= SM(1, AR_BTCOEX_CTRL_NUM_ANTENNAS) |
-                         SM(1, AR_BTCOEX_CTRL_RX_CHAIN_MASK);
-               REG_RMW_FIELD(ah, AR_BTCOEX_CTRL2,
-                             AR_BTCOEX_CTRL2_TX_CHAIN_MASK, 0x1);
+               u8 ant = MS(mci->config, ATH_MCI_CONFIG_ANT_ARCH);
+
+               if (ant == ATH_MCI_ANT_ARCH_1_ANT_PA_LNA_SHARED)
+                       ar9003_mci_set_btcoex_ctrl_9565_1ANT(ah);
+               else
+                       ar9003_mci_set_btcoex_ctrl_9565_2ANT(ah);
        } else {
-               regval |= SM(2, AR_BTCOEX_CTRL_NUM_ANTENNAS) |
-                         SM(3, AR_BTCOEX_CTRL_RX_CHAIN_MASK);
+               ar9003_mci_set_btcoex_ctrl_9462(ah);
        }
 
-       REG_WRITE(ah, AR_BTCOEX_CTRL, regval);
-
        if (is_2g && !(mci->config & ATH_MCI_CONFIG_DISABLE_OSLA))
                ar9003_mci_osla_setup(ah, true);
        else

diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mci.h b/drivers/net/wireless/ath/ath9k/ar9003_mci.h
index e8b1914..6f305ab 100644 (file)
--- a/drivers/net/wireless/ath/ath9k/ar9003_mci.h
+++ b/drivers/net/wireless/ath/ath9k/ar9003_mci.h
@@ -109,8 +109,15 @@ enum mci_gpm_coex_bt_update_flags_op {
 #define ATH_MCI_CONFIG_MCI_OBS_MASK     (ATH_MCI_CONFIG_MCI_OBS_MCI  | \
                                         ATH_MCI_CONFIG_MCI_OBS_TXRX | \
                                         ATH_MCI_CONFIG_MCI_OBS_BT)
+
 #define ATH_MCI_CONFIG_MCI_OBS_GPIO     0x0000002F
 
+#define ATH_MCI_ANT_ARCH_1_ANT_PA_LNA_NON_SHARED 0x00
+#define ATH_MCI_ANT_ARCH_1_ANT_PA_LNA_SHARED     0x01
+#define ATH_MCI_ANT_ARCH_2_ANT_PA_LNA_NON_SHARED 0x02
+#define ATH_MCI_ANT_ARCH_2_ANT_PA_LNA_SHARED     0x03
+#define ATH_MCI_ANT_ARCH_3_ANT                   0x04
+
 enum mci_message_header {              /* length of payload */
        MCI_LNA_CTRL     = 0x10,        /* len = 0 */
        MCI_CONT_NACK    = 0x20,        /* len = 0 */