drivers: wifi: Remove the RPU awake assumption in IRQ

It was assumed that RPU would stay awake while servicing an interrupt,
but in few scenarios we had seen RPU entering sleep with a pending
interrupt, so, independent of the state (IRQ or not), wakeup RPU if its
asleep.

Signed-off-by: Chaitanya Tata <Chaitanya.Tata@nordicsemi.no>

drivers/wifi/nrf700x/osal/hw_if/hal/inc/hal_structs.h

@@ -233,7 +233,6 @@ struct nrf_wifi_hal_dev_ctx {
 	void *rpu_ps_timer;
 	void *rpu_ps_lock;
 	bool dbg_enable;
-	bool irq_ctx;
 	bool rpu_fw_booted;
 #endif /* CONFIG_NRF_WIFI_LOW_POWER */
 	char *event_data;

drivers/wifi/nrf700x/osal/hw_if/hal/src/hal_api.c

@@ -423,11 +423,9 @@ enum nrf_wifi_status hal_rpu_ps_wake(struct nrf_wifi_hal_dev_ctx *hal_dev_ctx)
 #endif /* CONFIG_NRF_WIFI_RPU_RECOVERY_PS_STATE_DEBUG */
 
 out:
-	if (!hal_dev_ctx->irq_ctx) {
-		nrf_wifi_osal_timer_schedule(hal_dev_ctx->hpriv->opriv,
-					     hal_dev_ctx->rpu_ps_timer,
-					     CONFIG_NRF700X_RPU_PS_IDLE_TIMEOUT_MS);
-	}
+	nrf_wifi_osal_timer_schedule(hal_dev_ctx->hpriv->opriv,
+						hal_dev_ctx->rpu_ps_timer,
+						CONFIG_NRF700X_RPU_PS_IDLE_TIMEOUT_MS);
 	return status;
 }
 
@@ -515,13 +513,6 @@ static void hal_rpu_ps_deinit(struct nrf_wifi_hal_dev_ctx *hal_dev_ctx)
 				    hal_dev_ctx->rpu_ps_lock);
 }
 
-
-static void hal_rpu_ps_set_state(struct nrf_wifi_hal_dev_ctx *hal_dev_ctx,
-				 enum RPU_PS_STATE ps_state)
-{
-	hal_dev_ctx->rpu_ps_state = ps_state;
-}
-
 enum nrf_wifi_status nrf_wifi_hal_get_rpu_ps_state(
 				struct nrf_wifi_hal_dev_ctx *hal_dev_ctx,
 				int *rpu_ps_ctrl_state)
@@ -1556,9 +1547,6 @@ enum nrf_wifi_status nrf_wifi_hal_irq_handler(void *data)
 	struct nrf_wifi_hal_dev_ctx *hal_dev_ctx = NULL;
 	enum nrf_wifi_status status = NRF_WIFI_STATUS_FAIL;
 	unsigned long flags = 0;
-#ifdef CONFIG_NRF_WIFI_LOW_POWER
-	enum RPU_PS_STATE ps_state = RPU_PS_STATE_ASLEEP;
-#endif /* CONFIG_NRF_WIFI_LOW_POWER */
 	bool do_rpu_recovery = false;
 
 	hal_dev_ctx = (struct nrf_wifi_hal_dev_ctx *)data;
@@ -1578,25 +1566,8 @@ enum nrf_wifi_status nrf_wifi_hal_irq_handler(void *data)
 		goto unlock;
 	}
 
-#ifdef CONFIG_NRF_WIFI_LOW_POWER
-	ps_state = hal_dev_ctx->rpu_ps_state;
-	hal_rpu_ps_set_state(hal_dev_ctx,
-			     RPU_PS_STATE_AWAKE);
-#ifdef CONFIG_NRF_WIFI_LOW_POWER_DBG
-	hal_dev_ctx->irq_ctx = true;
-#endif /* CONFIG_NRF_WIFI_LOW_POWER_DBG */
-#endif /* CONFIG_NRF_WIFI_LOW_POWER */
-
 	status = hal_rpu_irq_process(hal_dev_ctx, &do_rpu_recovery);
 
-#ifdef CONFIG_NRF_WIFI_LOW_POWER
-	hal_rpu_ps_set_state(hal_dev_ctx,
-			     ps_state);
-#ifdef CONFIG_NRF_WIFI_LOW_POWER_DBG
-	hal_dev_ctx->irq_ctx = false;
-#endif /* CONFIG_NRF_WIFI_LOW_POWER_DBG */
-#endif /* CONFIG_NRF_WIFI_LOW_POWER */
-
 	if (status != NRF_WIFI_STATUS_SUCCESS) {
 		goto unlock;
 	}