nrf_wifi: Add support to get current temperature

Add command/event to retrieve current temperature.

Signed-off-by: Ajay Parida <[email protected]>

Author: ajayparida

nrf_wifi/fw_if/umac_if/inc/fmac_api_common.h

@@ -362,6 +362,19 @@ enum nrf_wifi_status nrf_wifi_fmac_set_packet_filter(void *dev_ctx, unsigned cha
 						     unsigned short buffer_size);
 #endif /* CONFIG_NRF700X_RAW_DATA_RX || CONFIG_NRF700X_PROMISC_DATA_RX */
 
+/**
+ * @brief Issue a request to get current temperature from the RPU.
+ * @param fmac_dev_ctx Pointer to the UMAC IF context for a RPU WLAN device.
+ * @param current_temp Pointer to memory where the current temp is to be copied.
+ *
+ * This function is used to send a command to
+ *	    instruct the firmware to return the current temperature. The RPU will
+ *	    send the event with the current temperature.
+ *
+ * @return Command execution status
+ */
+enum nrf_wifi_status nrf_wifi_fmac_temp_get(struct nrf_wifi_fmac_dev_ctx *fmac_dev_ctx,
+					    int *current_temp);
 /**
  * @}
  */

nrf_wifi/fw_if/umac_if/inc/fmac_cmd.h

@@ -73,4 +73,6 @@ enum nrf_wifi_status umac_cmd_prog_stats_get(struct nrf_wifi_fmac_dev_ctx *fmac_
 #endif /* CONFIG_NRF700X_RADIO_TEST */
 					     int stat_type);
 
+enum nrf_wifi_status umac_cmd_prog_temp_get(struct nrf_wifi_fmac_dev_ctx *fmac_dev_ctx);
+
 #endif /* __FMAC_CMD_H__ */

nrf_wifi/fw_if/umac_if/inc/fmac_structs_common.h

@@ -176,6 +176,10 @@ struct nrf_wifi_fmac_dev_ctx {
 	struct nrf_wifi_event_regulatory_change *reg_change;
 	/** TX power ceiling parameters */
 	struct nrf_wifi_tx_pwr_ceil_params *tx_pwr_ceil_params;
+	/** current temp request status */
+	int temp_get_status;
+	/** current temperature */
+	int current_temp;
 	/** Data pointer to mode specific parameters */
 	char priv[];
 };

nrf_wifi/fw_if/umac_if/inc/fw/host_rpu_sys_if.h

@@ -161,6 +161,8 @@ enum nrf_wifi_sys_commands {
 	NRF_WIFI_CMD_RAW_CONFIG_FILTER,
 	/** Command to configure packet injector mode or Raw Tx mode */
 	NRF_WIFI_CMD_RAW_TX_PKT,
+	/** Command to get RPU temperature */
+	NRF_WIFI_CMD_GET_TEMP,
 };
 
 /**
@@ -192,6 +194,8 @@ enum nrf_wifi_sys_events {
 	NRF_WIFI_EVENT_FILTER_SET_DONE,
 	/** Tx done event for the Raw Tx */
 	NRF_WIFI_EVENT_RAW_TX_DONE,
+	/** Response to NRF_WIFI_CMD_GET_TEMP */
+	NRF_WIFI_EVENT_CURRENT_TEMP,
 };
 
 /**
@@ -1597,4 +1601,24 @@ struct nrf_wifi_event_deinit_done {
 	struct nrf_wifi_sys_head sys_head;
 } __NRF_WIFI_PKD;
 
+/**
+ * @brief This structure represents the command used to get the RPU temperature.
+ */
+struct nrf_wifi_cmd_get_temperature {
+	/** UMAC header, @ref nrf_wifi_sys_head */
+	struct nrf_wifi_sys_head sys_head;
+} __NRF_WIFI_PKD;
+
+/**
+ * @brief This structure represents an event that provides the current RPU temperature
+ * in degree celsius.
+ *
+ */
+struct nrf_wifi_event_current_temperature {
+	/** UMAC header, @ref nrf_wifi_sys_head */
+	struct nrf_wifi_sys_head sys_head;
+	/** Current temperature value in degree celsius */
+	int current_temperature;
+} __NRF_WIFI_PKD;
+
 #endif /* __HOST_RPU_SYS_IF_H__ */

nrf_wifi/fw_if/umac_if/src/cmd.c

@@ -541,3 +541,35 @@ enum nrf_wifi_status umac_cmd_prog_stats_get(struct nrf_wifi_fmac_dev_ctx *fmac_
 out:
 	return status;
 }
+
+enum nrf_wifi_status umac_cmd_prog_temp_get(struct nrf_wifi_fmac_dev_ctx *fmac_dev_ctx)
+{
+	enum nrf_wifi_status status = NRF_WIFI_STATUS_FAIL;
+	struct host_rpu_msg *umac_cmd = NULL;
+	struct nrf_wifi_cmd_get_temperature *umac_cmd_data = NULL;
+	int len = 0;
+
+	len = sizeof(*umac_cmd_data);
+
+	umac_cmd = umac_cmd_alloc(fmac_dev_ctx,
+				  NRF_WIFI_HOST_RPU_MSG_TYPE_SYSTEM,
+				  len);
+
+	if (!umac_cmd) {
+		nrf_wifi_osal_log_err(fmac_dev_ctx->fpriv->opriv,
+				      "%s: umac_cmd_alloc failed",
+				      __func__);
+		goto out;
+	}
+
+	umac_cmd_data = (struct nrf_wifi_cmd_get_temperature *)(umac_cmd->msg);
+
+	umac_cmd_data->sys_head.cmd_event = NRF_WIFI_CMD_GET_TEMP;
+	umac_cmd_data->sys_head.len = len;
+
+	status = nrf_wifi_hal_ctrl_cmd_send(fmac_dev_ctx->hal_dev_ctx,
+					    umac_cmd,
+					    (sizeof(*umac_cmd) + len));
+out:
+	return status;
+}

nrf_wifi/fw_if/umac_if/src/event.c

@@ -1008,6 +1008,38 @@ nrf_wifi_fmac_if_mode_set_event_proc(struct nrf_wifi_fmac_dev_ctx *fmac_dev_ctx,
 }
 #endif /* CONFIG_NRF700X_SYSTEM_WITH_RAW_MODES */
 
+static enum nrf_wifi_status umac_event_current_temp_proc(struct nrf_wifi_fmac_dev_ctx *fmac_dev_ctx,
+							 void *event)
+{
+	enum nrf_wifi_status status = NRF_WIFI_STATUS_FAIL;
+	struct nrf_wifi_event_current_temperature *event_current_temp = NULL;
+
+	if (!event) {
+		nrf_wifi_osal_log_err(fmac_dev_ctx->fpriv->opriv,
+				      "%s: Invalid parameters",
+				      __func__);
+		goto out;
+	}
+
+	if (!fmac_dev_ctx->temp_get_status) {
+		nrf_wifi_osal_log_err(fmac_dev_ctx->fpriv->opriv,
+				      "%s: Temperature recevied when req was not sent!",
+				      __func__);
+		goto out;
+	}
+
+	event_current_temp = ((struct nrf_wifi_event_current_temperature *)event);
+
+	fmac_dev_ctx->current_temp = event_current_temp->current_temperature;
+
+	fmac_dev_ctx->temp_get_status = false;
+
+	status = NRF_WIFI_STATUS_SUCCESS;
+
+out:
+	return status;
+}
+
 static enum nrf_wifi_status umac_process_sys_events(struct nrf_wifi_fmac_dev_ctx *fmac_dev_ctx,
 						    struct host_rpu_msg *rpu_msg)
 {
@@ -1092,6 +1124,10 @@ static enum nrf_wifi_status umac_process_sys_events(struct nrf_wifi_fmac_dev_ctx
 		status = NRF_WIFI_STATUS_SUCCESS;
 		break;
 #endif /* CONFIG_NRF700X_RAW_DATA_RX || CONFIG_NRF700X_PROMISC_DATA_RX */
+	case NRF_WIFI_EVENT_CURRENT_TEMP:
+		status = umac_event_current_temp_proc(fmac_dev_ctx,
+						      sys_head);
+		break;
 	default:
 		nrf_wifi_osal_log_err(fmac_dev_ctx->fpriv->opriv,
 				      "%s: Unknown event recd: %d",

nrf_wifi/fw_if/umac_if/src/fmac_api_common.c

@@ -1301,3 +1301,36 @@ enum nrf_wifi_status nrf_wifi_fmac_set_packet_filter(void *dev_ctx, unsigned cha
 	return status;
 }
 #endif /* CONFIG_NRF700X_RAW_DATA_RX || CONFIG_NRF700X_PROMISC_DATA_RX */
+
+enum nrf_wifi_status nrf_wifi_fmac_temp_get(struct nrf_wifi_fmac_dev_ctx *fmac_dev_ctx,
+					    int *current_temp)
+{
+	enum nrf_wifi_status status = NRF_WIFI_STATUS_FAIL;
+	unsigned char count = 0;
+
+	fmac_dev_ctx->temp_get_status = true;
+
+	status = umac_cmd_prog_temp_get(fmac_dev_ctx);
+
+	if (status != NRF_WIFI_STATUS_SUCCESS) {
+		goto out;
+	}
+
+	do {
+		nrf_wifi_osal_sleep_ms(fmac_dev_ctx->fpriv->opriv,
+				       1);
+		count++;
+	} while ((fmac_dev_ctx->temp_get_status == true) &&
+		 (count < NRF_WIFI_FMAC_STATS_RECV_TIMEOUT));
+
+	if (count == NRF_WIFI_FMAC_STATS_RECV_TIMEOUT) {
+		nrf_wifi_osal_log_err(fmac_dev_ctx->fpriv->opriv,
+			              "%s: Timed out",
+				      __func__);
+		goto out;
+	}
+
+	*current_temp = fmac_dev_ctx->current_temp;
+out:
+	return status;
+}