iwlwifi: mvm: pass the clock type to iwl_mvm_get_sync_time()

Allow the caller to pass the clock type to iwl_mvm_get_sync_time() so
callers with different needs can decide whether to use boottime or
realtime.
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210612142637.093f6660e69b.Ifd2328ac2130269f729c9c1bceec44ba01d79e88@changeidSigned-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c

 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
 /*
- * Copyright (C) 2012-2014, 2018-2020 Intel Corporation
+ * Copyright (C) 2012-2014, 2018-2021 Intel Corporation
  * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
  * Copyright (C) 2016-2017 Intel Deutschland GmbH
  */
@@ -460,7 +460,7 @@ static ssize_t iwl_dbgfs_os_device_timediff_read(struct file *file,
 	int pos = 0;
 
 	mutex_lock(&mvm->mutex);
-	iwl_mvm_get_sync_time(mvm, &curr_gp2, &curr_os);
+	iwl_mvm_get_sync_time(mvm, CLOCK_BOOTTIME, &curr_gp2, &curr_os, NULL);
 	mutex_unlock(&mvm->mutex);
 
 	do_div(curr_os, NSEC_PER_USEC);

drivers/net/wireless/intel/iwlwifi/mvm/ftm-initiator.c

 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
 /*
  * Copyright (C) 2015-2017 Intel Deutschland GmbH
- * Copyright (C) 2018-2020 Intel Corporation
+ * Copyright (C) 2018-2021 Intel Corporation
  */
 #include <linux/etherdevice.h>
 #include <linux/math64.h>
@@ -879,7 +879,8 @@ static u64 iwl_mvm_ftm_get_host_time(struct iwl_mvm *mvm, __le32 fw_gp2_ts)
 	u32 curr_gp2, diff;
 	u64 now_from_boot_ns;
 
-	iwl_mvm_get_sync_time(mvm, &curr_gp2, &now_from_boot_ns);
+	iwl_mvm_get_sync_time(mvm, CLOCK_BOOTTIME, &curr_gp2,
+			      &now_from_boot_ns, NULL);
 
 	if (curr_gp2 >= gp2_ts)
 		diff = curr_gp2 - gp2_ts;

drivers/net/wireless/intel/iwlwifi/mvm/mvm.h

@@ -16,6 +16,8 @@
 #include <linux/thermal.h>
 #endif
 
+#include <linux/ktime.h>
+
 #include "iwl-op-mode.h"
 #include "iwl-trans.h"
 #include "fw/notif-wait.h"
@@ -1450,7 +1452,8 @@ u8 iwl_mvm_mac80211_ac_to_ucode_ac(enum ieee80211_ac_numbers ac);
 void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm);
 u8 first_antenna(u8 mask);
 u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx);
-void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, u32 *gp2, u64 *boottime);
+void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, int clock_type, u32 *gp2,
+			   u64 *boottime, ktime_t *realtime);
 u32 iwl_mvm_get_systime(struct iwl_mvm *mvm);
 
 /* Tx / Host Commands */

drivers/net/wireless/intel/iwlwifi/mvm/utils.c

 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
 /*
- * Copyright (C) 2012-2014, 2018-2020 Intel Corporation
+ * Copyright (C) 2012-2014, 2018-2021 Intel Corporation
  * Copyright (C) 2013-2014 Intel Mobile Communications GmbH
  * Copyright (C) 2015-2017 Intel Deutschland GmbH
  */
@@ -1398,7 +1398,8 @@ u32 iwl_mvm_get_systime(struct iwl_mvm *mvm)
 	return iwl_read_prph(mvm->trans, reg_addr);
 }
 
-void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, u32 *gp2, u64 *boottime)
+void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, int clock_type,
+			   u32 *gp2, u64 *boottime, ktime_t *realtime)
 {
 	bool ps_disabled;
 
@@ -1412,7 +1413,11 @@ void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, u32 *gp2, u64 *boottime)
 	}
 
 	*gp2 = iwl_mvm_get_systime(mvm);
+
+	if (clock_type == CLOCK_BOOTTIME && boottime)
 		*boottime = ktime_get_boottime_ns();
+	else if (clock_type == CLOCK_REALTIME && realtime)
+		*realtime = ktime_get_real();
 
 	if (!ps_disabled) {
 		mvm->ps_disabled = ps_disabled;