ipc: common: make Zephyr the default build config

Zephyr is now mandatory so we can remove ifdefs.

Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>

Author: lrgirdwo

src/ipc/ipc-common.c

@@ -175,21 +175,13 @@ void ipc_send_queued_msg(void)
 	k_spin_unlock(&ipc->lock, key);
 }
 
-#ifdef __ZEPHYR__
 static K_THREAD_STACK_DEFINE(ipc_send_wq_stack, CONFIG_STACK_SIZE_IPC_TX);
-#endif
 
 static void schedule_ipc_worker(void)
 {
-	/*
-	 * note: in XTOS builds, this is handled in
-	 * task_main_primary_core()
-	 */
-#ifdef __ZEPHYR__
 	struct ipc *ipc = ipc_get();
 
 	k_work_schedule_for_queue(&ipc->ipc_send_wq, &ipc->z_delayed_work, K_USEC(IPC_PERIOD_USEC));
-#endif
 }
 
 __cold void ipc_msg_send_direct(struct ipc_msg *msg, void *data)
@@ -229,23 +221,6 @@ void ipc_msg_send(struct ipc_msg *msg, void *data, bool high_priority)
 		assert(!ret);
 	}
 
-	/*
-	 * note: This function can be executed in LL or EDF context, from any core.
-	 * In Zephyr builds, there is IPC queue that is always handled by the primary core,
-	 * whereas submitting to the queue is allowed from any core. Therefore disable option
-	 * of sending IPC immediately by any context/core to secure IPC registers/mailbox
-	 * access.
-	 */
-#ifndef __ZEPHYR__
-	/* try to send critical notifications right away */
-	if (high_priority) {
-		ret = ipc_platform_send_msg(msg);
-		if (!ret) {
-			k_spin_unlock(&ipc->lock, key);
-			return;
-		}
-	}
-#endif
 	/* add to queue unless already there */
 	if (list_is_empty(&msg->list)) {
 		if (high_priority)
@@ -260,7 +235,6 @@ void ipc_msg_send(struct ipc_msg *msg, void *data, bool high_priority)
 }
 EXPORT_SYMBOL(ipc_msg_send);
 
-#ifdef __ZEPHYR__
 static void ipc_work_handler(struct k_work *work)
 {
 	struct ipc *ipc = ipc_get();
@@ -275,7 +249,6 @@ static void ipc_work_handler(struct k_work *work)
 
 	k_spin_unlock(&ipc->lock, key);
 }
-#endif
 
 void ipc_schedule_process(struct ipc *ipc)
 {
@@ -322,7 +295,6 @@ __cold int ipc_init(struct sof *sof)
 	io_perf_monitor_init_data(&sof->ipc->io_perf_out_msg_count, &init_data);
 #endif
 
-#ifdef __ZEPHYR__
 	struct k_thread *thread = &sof->ipc->ipc_send_wq.thread;
 
 	k_work_queue_start(&sof->ipc->ipc_send_wq, ipc_send_wq_stack,
@@ -336,7 +308,6 @@ __cold int ipc_init(struct sof *sof)
 	k_thread_resume(thread);
 
 	k_work_init_delayable(&sof->ipc->z_delayed_work, ipc_work_handler);
-#endif
 
 	return platform_ipc_init(sof->ipc);
 }