qcacld-3.0: Measure TSF latency between host TSF sync enabled devices

The feature raises a pulses at specified interval in TSF time domain.
The pulses can be used to determine driver level latency between hosts
as they are operating in same TSF time domain.
Add ini "g_tsf_accuracy_configs" to configure parameters for TSF accuracy
feature to customize GPIO pins and interval.

Change-Id: I49609d5beba8043ac2ecc086e97b01d1e0b2d3f6
CRs-Fixed: 3277992

core/hdd/inc/wlan_hdd_main.h

@@ -121,6 +121,10 @@
 #include "wlan_osif_features.h"
 #include "wlan_dp_public_struct.h"
 
+#ifdef WLAN_FEATURE_TSF_ACCURACY
+#include "qdf_hrtimer.h"
+#endif
+
 /*
  * Preprocessor definitions and constants
  */
@@ -1005,6 +1009,8 @@ struct wlm_multi_client_info_table {
  * @gpio_tsf_sync_work: work to sync send TSF CAP WMI command
  * @cache_sta_count: number of currently cached stations
  * @acs_complete_event: acs complete event
+ * @host_trigger_gpio_timer: A hrtimer used for TSF Accuracy Feature to
+ *                           indicate TSF cycle complete
  * @latency_level: 0 - normal, 1 - xr, 2 - low, 3 - ultralow
  * @multi_client_ll_support: to check multi client ll support in driver
  * @client_info: To store multi client id information
@@ -1172,6 +1178,9 @@ struct hdd_adapter {
 	/* spin lock for read/write timestamps */
 	qdf_spinlock_t host_target_sync_lock;
 	qdf_mc_timer_t host_target_sync_timer;
+#ifdef WLAN_FEATURE_TSF_ACCURACY
+	qdf_hrtimer_data_t host_trigger_gpio_timer;
+#endif
 	bool enable_dynamic_tsf_sync;
 	bool host_target_sync_force;
 	uint32_t dynamic_tsf_sync_interval;
@@ -1696,6 +1705,7 @@ enum wlan_state_ctrl_str_id {
  * @bus_bw_work: work for periodically computing DDR bus bandwidth requirements
  * @g_event_flags: a bitmap of hdd_driver_flags
  * @psoc_idle_timeout_work: delayed work for psoc idle shutdown
+ * @tsf_accuracy_context: Holds TSF Accuracy feature activated vdev adapter.
  * @dynamic_nss_chains_support: Per vdev dynamic nss chains update capability
  * @sar_cmd_params: SAR command params to be configured to the FW
  * @country_change_work: work for updating vdev when country changes
@@ -1928,6 +1938,9 @@ struct hdd_context {
 	qdf_atomic_t cap_tsf_flag;
 	/* the context that is capturing tsf */
 	struct hdd_adapter *cap_tsf_context;
+#ifdef WLAN_FEATURE_TSF_ACCURACY
+	struct hdd_adapter *tsf_accuracy_context;
+#endif
 #endif
 #ifdef WLAN_FEATURE_TSF_PTP
 	struct ptp_clock_info ptp_cinfo;