Merge "msm: camera: ife: calculate accurate boot timestamp at CSID SOF" into camera-kernel.lnx.1.0

drivers/cam_isp/isp_hw_mgr/cam_ife_hw_mgr.c

@@ -5888,41 +5888,42 @@ static int cam_ife_mgr_cmd_get_sof_timestamp(
 	struct cam_hw_intf                   *hw_intf;
 	struct cam_csid_get_time_stamp_args   csid_get_time;
 
-	list_for_each_entry(hw_mgr_res, &ife_ctx->res_list_ife_csid, list) {
-		for (i = 0; i < CAM_ISP_HW_SPLIT_MAX; i++) {
-			if (!hw_mgr_res->hw_res[i])
-				continue;
+	hw_mgr_res = list_first_entry(&ife_ctx->res_list_ife_csid,
+		struct cam_ife_hw_mgr_res, list);
 
+	for (i = 0; i < CAM_ISP_HW_SPLIT_MAX; i++) {
+		if (!hw_mgr_res->hw_res[i])
+			continue;
+
+		/*
+		 * Get the SOF time stamp from left resource only.
+		 * Left resource is master for dual vfe case and
+		 * Rdi only context case left resource only hold
+		 * the RDI resource
+		 */
+
+		hw_intf = hw_mgr_res->hw_res[i]->hw_intf;
+		if (hw_intf->hw_ops.process_cmd) {
 			/*
-			 * Get the SOF time stamp from left resource only.
-			 * Left resource is master for dual vfe case and
-			 * Rdi only context case left resource only hold
-			 * the RDI resource
+			 * Single VFE case, Get the time stamp from
+			 * available one csid hw in the context
+			 * Dual VFE case, get the time stamp from
+			 * master(left) would be sufficient
 			 */
 
-			hw_intf = hw_mgr_res->hw_res[i]->hw_intf;
-			if (hw_intf->hw_ops.process_cmd) {
-				/*
-				 * Single VFE case, Get the time stamp from
-				 * available one csid hw in the context
-				 * Dual VFE case, get the time stamp from
-				 * master(left) would be sufficient
-				 */
-
-				csid_get_time.node_res =
-					hw_mgr_res->hw_res[i];
-				rc = hw_intf->hw_ops.process_cmd(
-					hw_intf->hw_priv,
-					CAM_IFE_CSID_CMD_GET_TIME_STAMP,
-					&csid_get_time,
-					sizeof(
-					struct cam_csid_get_time_stamp_args));
-				if (!rc && (i == CAM_ISP_HW_SPLIT_LEFT)) {
-					*time_stamp =
-						csid_get_time.time_stamp_val;
-					*boot_time_stamp =
-						csid_get_time.boot_timestamp;
-				}
+			csid_get_time.node_res =
+				hw_mgr_res->hw_res[i];
+			rc = hw_intf->hw_ops.process_cmd(
+				hw_intf->hw_priv,
+				CAM_IFE_CSID_CMD_GET_TIME_STAMP,
+				&csid_get_time,
+				sizeof(
+				struct cam_csid_get_time_stamp_args));
+			if (!rc && (i == CAM_ISP_HW_SPLIT_LEFT)) {
+				*time_stamp =
+					csid_get_time.time_stamp_val;
+				*boot_time_stamp =
+					csid_get_time.boot_timestamp;
 			}
 		}
 	}

drivers/cam_isp/isp_hw_mgr/isp_hw/ife_csid_hw/cam_ife_csid_core.c

@@ -534,6 +534,7 @@ static int cam_ife_csid_global_reset(struct cam_ife_csid_hw *csid_hw)
 		CAM_ERR(CAM_ISP, "CSID:%d IRQ value after reset rc = %d",
 			csid_hw->hw_intf->hw_idx, val);
 	csid_hw->error_irq_count = 0;
+	csid_hw->prev_boot_timestamp = 0;
 
 	return rc;
 }
@@ -1329,6 +1330,7 @@ static int cam_ife_csid_disable_hw(struct cam_ife_csid_hw *csid_hw)
 	spin_unlock_irqrestore(&csid_hw->lock_state, flags);
 	csid_hw->hw_info->hw_state = CAM_HW_STATE_POWER_DOWN;
 	csid_hw->error_irq_count = 0;
+	csid_hw->prev_boot_timestamp = 0;
 
 	return rc;
 }
@@ -2928,6 +2930,7 @@ static int cam_ife_csid_get_time_stamp(
 	const struct cam_ife_csid_udi_reg_offset   *udi_reg;
 	struct timespec64 ts;
 	uint32_t  time_32, id;
+	uint64_t  time_delta;
 
 	time_stamp = (struct cam_csid_get_time_stamp_args  *)cmd_args;
 	res = time_stamp->node_res;
@@ -2999,9 +3002,22 @@ static int cam_ife_csid_get_time_stamp(
 		CAM_IFE_CSID_QTIMER_MUL_FACTOR,
 		CAM_IFE_CSID_QTIMER_DIV_FACTOR);
 
-	get_monotonic_boottime64(&ts);
-	time_stamp->boot_timestamp = (uint64_t)((ts.tv_sec * 1000000000) +
-		ts.tv_nsec);
+	if (!csid_hw->prev_boot_timestamp) {
+		get_monotonic_boottime64(&ts);
+		time_stamp->boot_timestamp =
+			(uint64_t)((ts.tv_sec * 1000000000) +
+			ts.tv_nsec);
+		csid_hw->prev_qtimer_ts = 0;
+		CAM_DBG(CAM_ISP, "timestamp:%lld",
+			time_stamp->boot_timestamp);
+	} else {
+		time_delta = time_stamp->time_stamp_val -
+			csid_hw->prev_qtimer_ts;
+		time_stamp->boot_timestamp =
+			csid_hw->prev_boot_timestamp + time_delta;
+	}
+	csid_hw->prev_qtimer_ts = time_stamp->time_stamp_val;
+	csid_hw->prev_boot_timestamp = time_stamp->boot_timestamp;
 
 	return 0;
 }

drivers/cam_isp/isp_hw_mgr/isp_hw/ife_csid_hw/cam_ife_csid_core.h

@@ -550,6 +550,8 @@ struct cam_ife_csid_path_cfg {
  * @binning_enable            Flag is set if hardware supports QCFA binning
  * @binning_supported         Flag is set if sensor supports QCFA binning
  *
+ * @first_sof_ts              first bootime stamp at the start
+ * @prev_qtimer_ts            stores csid timestamp
  */
 struct cam_ife_csid_hw {
 	struct cam_hw_intf              *hw_intf;
@@ -581,6 +583,8 @@ struct cam_ife_csid_hw {
 	spinlock_t                       lock_state;
 	uint32_t                         binning_enable;
 	uint32_t                         binning_supported;
+	uint64_t                         prev_boot_timestamp;
+	uint64_t                         prev_qtimer_ts;
 };
 
 int cam_ife_csid_hw_probe_init(struct cam_hw_intf  *csid_hw_intf,