Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 61 insertions, 0 deletions

diff --git a/drivers/net/ipa/ipa_clock.h b/drivers/net/ipa/ipa_clock.h
new file mode 100644
index 000000000..1d70f1de3
--- /dev/null
+++ b/drivers/net/ipa/ipa_clock.h
@@ -0,0 +1,61 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
+ * Copyright (C) 2018-2020 Linaro Ltd.
+ */
+#ifndef _IPA_CLOCK_H_
+#define _IPA_CLOCK_H_
+
+struct device;
+
+struct ipa;
+
+/**
+ * ipa_clock_rate() - Return the current IPA core clock rate
+ * @ipa:	IPA structure
+ *
+ * Return: The current clock rate (in Hz), or 0.
+ */
+u32 ipa_clock_rate(struct ipa *ipa);
+
+/**
+ * ipa_clock_init() - Initialize IPA clocking
+ * @dev:	IPA device
+ *
+ * Return:	A pointer to an ipa_clock structure, or a pointer-coded error
+ */
+struct ipa_clock *ipa_clock_init(struct device *dev);
+
+/**
+ * ipa_clock_exit() - Inverse of ipa_clock_init()
+ * @clock:	IPA clock pointer
+ */
+void ipa_clock_exit(struct ipa_clock *clock);
+
+/**
+ * ipa_clock_get() - Get an IPA clock reference
+ * @ipa:	IPA pointer
+ *
+ * This call blocks if this is the first reference.
+ */
+void ipa_clock_get(struct ipa *ipa);
+
+/**
+ * ipa_clock_get_additional() - Get an IPA clock reference if not first
+ * @ipa:	IPA pointer
+ *
+ * This returns immediately, and only takes a reference if not the first
+ */
+bool ipa_clock_get_additional(struct ipa *ipa);
+
+/**
+ * ipa_clock_put() - Drop an IPA clock reference
+ * @ipa:	IPA pointer
+ *
+ * This drops a clock reference.  If the last reference is being dropped,
+ * the clock is stopped and RX endpoints are suspended.  This call will
+ * not block unless the last reference is dropped.
+ */
+void ipa_clock_put(struct ipa *ipa);
+
+#endif /* _IPA_CLOCK_H_ */