1 files changed, 73 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath11k/wow.c b/drivers/net/wireless/ath/ath11k/wow.c
new file mode 100644
index 000000000000..43c62e99dd0e
--- /dev/null
+++ b/drivers/net/wireless/ath/ath11k/wow.c
@@ -0,0 +1,73 @@
+// SPDX-License-Identifier: BSD-3-Clause-Clear
+/*
+ * Copyright (c) 2020 The Linux Foundation. All rights reserved.
+ */
+
+#include <linux/delay.h>
+
+#include "mac.h"
+#include "core.h"
+#include "hif.h"
+#include "debug.h"
+#include "wmi.h"
+#include "wow.h"
+
+int ath11k_wow_enable(struct ath11k_base *ab)
+{
+	struct ath11k *ar = ath11k_ab_to_ar(ab, 0);
+	int i, ret;
+
+	clear_bit(ATH11K_FLAG_HTC_SUSPEND_COMPLETE, &ab->dev_flags);
+
+	for (i = 0; i < ATH11K_WOW_RETRY_NUM; i++) {
+		reinit_completion(&ab->htc_suspend);
+
+		ret = ath11k_wmi_wow_enable(ar);
+		if (ret) {
+			ath11k_warn(ab, "failed to issue wow enable: %d\n", ret);
+			return ret;
+		}
+
+		ret = wait_for_completion_timeout(&ab->htc_suspend, 3 * HZ);
+		if (ret == 0) {
+			ath11k_warn(ab,
+				    "timed out while waiting for htc suspend completion\n");
+			return -ETIMEDOUT;
+		}
+
+		if (test_bit(ATH11K_FLAG_HTC_SUSPEND_COMPLETE, &ab->dev_flags))
+			/* success, suspend complete received */
+			return 0;
+
+		ath11k_warn(ab, "htc suspend not complete, retrying (try %d)\n",
+			    i);
+		msleep(ATH11K_WOW_RETRY_WAIT_MS);
+	}
+
+	ath11k_warn(ab, "htc suspend not complete, failing after %d tries\n", i);
+
+	return -ETIMEDOUT;
+}
+
+int ath11k_wow_wakeup(struct ath11k_base *ab)
+{
+	struct ath11k *ar = ath11k_ab_to_ar(ab, 0);
+	int ret;
+
+	reinit_completion(&ab->wow.wakeup_completed);
+
+	ret = ath11k_wmi_wow_host_wakeup_ind(ar);
+	if (ret) {
+		ath11k_warn(ab, "failed to send wow wakeup indication: %d\n",
+			    ret);
+		return ret;
+	}
+
+	ret = wait_for_completion_timeout(&ab->wow.wakeup_completed, 3 * HZ);
+	if (ret == 0) {
+		ath11k_warn(ab, "timed out while waiting for wow wakeup completion\n");
+		return -ETIMEDOUT;
+	}
+
+	return 0;
+}