iwlwifi: mvm: BT Coex - allow to force the antenna allocation

This can be used for testing.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

4 files changed, 94 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/mvm/coex.c b/drivers/net/wireless/iwlwifi/mvm/coex.c
index c8c3b38228f0..b2003d82260a 100644
--- a/drivers/net/wireless/iwlwifi/mvm/coex.c
+++ b/drivers/net/wireless/iwlwifi/mvm/coex.c
@@ -106,6 +106,9 @@ static const u8 iwl_bt_prio_tbl[BT_COEX_PRIO_TBL_EVT_MAX] = {
 
 static int iwl_send_bt_prio_tbl(struct iwl_mvm *mvm)
 {
+        if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
+                return 0;
+
         return iwl_mvm_send_cmd_pdu(mvm, BT_COEX_PRIO_TABLE, 0,
                                     sizeof(struct iwl_bt_coex_prio_tbl_cmd),
                                     &iwl_bt_prio_tbl);
@@ -578,6 +581,29 @@ int iwl_send_bt_init_conf(struct iwl_mvm *mvm)
                 return -ENOMEM;
         cmd.data[0] = bt_cmd;
 
+        lockdep_assert_held(&mvm->mutex);
+
+        if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS)) {
+                switch (mvm->bt_force_ant_mode) {
+                case BT_FORCE_ANT_AUTO:
+                        flags = BT_COEX_AUTO;
+                        break;
+                case BT_FORCE_ANT_BT:
+                        flags = BT_COEX_BT;
+                        break;
+                case BT_FORCE_ANT_WIFI:
+                        flags = BT_COEX_WIFI;
+                        break;
+                default:
+                        WARN_ON(1);
+                        flags = 0;
+                }
+
+                bt_cmd->flags = cpu_to_le32(flags);
+                bt_cmd->valid_bit_msk = cpu_to_le32(BT_VALID_ENABLE);
+                goto send_cmd;
+        }
+
         bt_cmd->max_kill = 5;
         bt_cmd->bt4_antenna_isolation_thr = BT_ANTENNA_COUPLING_THRESHOLD;
         bt_cmd->bt4_antenna_isolation = iwlwifi_mod_params.ant_coupling;
@@ -642,6 +668,7 @@ int iwl_send_bt_init_conf(struct iwl_mvm *mvm)
         bt_cmd->kill_cts_msk =
                 cpu_to_le32(iwl_bt_cts_kill_msk[BT_KILL_MSK_DEFAULT]);
 
+send_cmd:
         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
 
@@ -955,6 +982,10 @@ static void iwl_mvm_bt_coex_notif_handle(struct iwl_mvm *mvm)
         struct iwl_bt_coex_ci_cmd cmd = {};
         u8 ci_bw_idx;
 
+        /* Ignore updates if we are in force mode */
+        if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
+                return;
+
         rcu_read_lock();
         ieee80211_iterate_active_interfaces_atomic(
                                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
@@ -1121,6 +1152,10 @@ void iwl_mvm_bt_rssi_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 
         lockdep_assert_held(&mvm->mutex);
 
+        /* Ignore updates if we are in force mode */
+        if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
+                return;
+
         /*
          * Rssi update while not associated - can happen since the statistics
          * are handled asynchronously
@@ -1274,6 +1309,10 @@ int iwl_mvm_rx_ant_coupling_notif(struct iwl_mvm *mvm,
 
         lockdep_assert_held(&mvm->mutex);
 
+        /* Ignore updates if we are in force mode */
+        if (unlikely(mvm->bt_force_ant_mode != BT_FORCE_ANT_DIS))
+                return 0;
+
         if (ant_isolation ==  mvm->last_ant_isol)
                 return 0;
 
diff --git a/drivers/net/wireless/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/iwlwifi/mvm/debugfs.c
index 29ca72695eaa..602bbd29ec5a 100644
--- a/drivers/net/wireless/iwlwifi/mvm/debugfs.c
+++ b/drivers/net/wireless/iwlwifi/mvm/debugfs.c
@@ -455,6 +455,43 @@ iwl_dbgfs_bt_tx_prio_write(struct iwl_mvm *mvm, char *buf,
         return count;
 }
 
+static ssize_t
+iwl_dbgfs_bt_force_ant_write(struct iwl_mvm *mvm, char *buf,
+                             size_t count, loff_t *ppos)
+{
+        static const char * const modes_str[BT_FORCE_ANT_MAX] = {
+                [BT_FORCE_ANT_DIS] = "dis",
+                [BT_FORCE_ANT_AUTO] = "auto",
+                [BT_FORCE_ANT_BT] = "bt",
+                [BT_FORCE_ANT_WIFI] = "wifi",
+        };
+        int ret, bt_force_ant_mode;
+
+        for (bt_force_ant_mode = 0;
+             bt_force_ant_mode < ARRAY_SIZE(modes_str);
+             bt_force_ant_mode++) {
+                if (!strcmp(buf, modes_str[bt_force_ant_mode]))
+                        break;
+        }
+
+        if (bt_force_ant_mode >= ARRAY_SIZE(modes_str))
+                return -EINVAL;
+
+        ret = 0;
+        mutex_lock(&mvm->mutex);
+        if (mvm->bt_force_ant_mode == bt_force_ant_mode)
+                goto out;
+
+        mvm->bt_force_ant_mode = bt_force_ant_mode;
+        IWL_DEBUG_COEX(mvm, "Force mode: %s\n",
+                       modes_str[mvm->bt_force_ant_mode]);
+        ret = iwl_send_bt_init_conf(mvm);
+
+out:
+        mutex_unlock(&mvm->mutex);
+        return ret ?: count;
+}
+
 #define PRINT_STATS_LE32(_str, _val)                                    \
                          pos += scnprintf(buf + pos, bufsz - pos,       \
                                           fmt_table, _str,              \
@@ -1101,6 +1138,7 @@ MVM_DEBUGFS_READ_FILE_OPS(drv_rx_stats);
 MVM_DEBUGFS_WRITE_FILE_OPS(fw_restart, 10);
 MVM_DEBUGFS_WRITE_FILE_OPS(fw_nmi, 10);
 MVM_DEBUGFS_WRITE_FILE_OPS(bt_tx_prio, 10);
+MVM_DEBUGFS_WRITE_FILE_OPS(bt_force_ant, 10);
 MVM_DEBUGFS_READ_WRITE_FILE_OPS(scan_ant_rxchain, 8);
 MVM_DEBUGFS_READ_WRITE_FILE_OPS(d0i3_refs, 8);
 
@@ -1142,6 +1180,7 @@ int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir)
         MVM_DEBUGFS_ADD_FILE(fw_restart, mvm->debugfs_dir, S_IWUSR);
         MVM_DEBUGFS_ADD_FILE(fw_nmi, mvm->debugfs_dir, S_IWUSR);
         MVM_DEBUGFS_ADD_FILE(bt_tx_prio, mvm->debugfs_dir, S_IWUSR);
+        MVM_DEBUGFS_ADD_FILE(bt_force_ant, mvm->debugfs_dir, S_IWUSR);
         MVM_DEBUGFS_ADD_FILE(scan_ant_rxchain, mvm->debugfs_dir,
                              S_IWUSR | S_IRUSR);
         MVM_DEBUGFS_ADD_FILE(prph_reg, mvm->debugfs_dir, S_IWUSR | S_IRUSR);
diff --git a/drivers/net/wireless/iwlwifi/mvm/fw-api-coex.h b/drivers/net/wireless/iwlwifi/mvm/fw-api-coex.h
index 5fe82c29c8ad..98175ca05e9d 100644
--- a/drivers/net/wireless/iwlwifi/mvm/fw-api-coex.h
+++ b/drivers/net/wireless/iwlwifi/mvm/fw-api-coex.h
@@ -76,6 +76,9 @@
  * @BT_COEX_2W:
  * @BT_COEX_3W:
  * @BT_COEX_NW:
+ * @BT_COEX_AUTO:
+ * @BT_COEX_BT: Antenna is for BT (manufacuring tests)
+ * @BT_COEX_WIFI: Antenna is for BT (manufacuring tests)
  * @BT_COEX_SYNC2SCO:
  * @BT_COEX_CORUNNING:
  * @BT_COEX_MPLUT:
@@ -89,6 +92,9 @@ enum iwl_bt_coex_flags {
         BT_COEX_2W                      = 0x1 << BT_COEX_MODE_POS,
         BT_COEX_3W                      = 0x2 << BT_COEX_MODE_POS,
         BT_COEX_NW                      = 0x3 << BT_COEX_MODE_POS,
+        BT_COEX_AUTO                    = 0x5 << BT_COEX_MODE_POS,
+        BT_COEX_BT                      = 0x6 << BT_COEX_MODE_POS,
+        BT_COEX_WIFI                    = 0x7 << BT_COEX_MODE_POS,
         BT_COEX_SYNC2SCO                = BIT(7),
         BT_COEX_CORUNNING               = BIT(8),
         BT_COEX_MPLUT                   = BIT(9),
diff --git a/drivers/net/wireless/iwlwifi/mvm/mvm.h b/drivers/net/wireless/iwlwifi/mvm/mvm.h
index fcc6c29482d0..472ef09c1f5f 100644
--- a/drivers/net/wireless/iwlwifi/mvm/mvm.h
+++ b/drivers/net/wireless/iwlwifi/mvm/mvm.h
@@ -235,6 +235,15 @@ enum iwl_mvm_ref_type {
         IWL_MVM_REF_COUNT,
 };
 
+enum iwl_bt_force_ant_mode {
+        BT_FORCE_ANT_DIS = 0,
+        BT_FORCE_ANT_AUTO,
+        BT_FORCE_ANT_BT,
+        BT_FORCE_ANT_WIFI,
+
+        BT_FORCE_ANT_MAX,
+};
+
 /**
 * struct iwl_mvm_vif_bf_data - beacon filtering related data
 * @bf_enabled: indicates if beacon filtering is enabled
@@ -629,6 +638,7 @@ struct iwl_mvm {
         u32 last_ant_isol;
         u8 last_corun_lut;
         u8 bt_tx_prio;
+        enum iwl_bt_force_ant_mode bt_force_ant_mode;
 
         /* Thermal Throttling and CTkill */
         struct iwl_mvm_tt_mgmt thermal_throttle;