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-rw-r--r--include/linux/interconnect.h52
1 files changed, 52 insertions, 0 deletions
diff --git a/include/linux/interconnect.h b/include/linux/interconnect.h
new file mode 100644
index 000000000000..c331afb3a2c8
--- /dev/null
+++ b/include/linux/interconnect.h
@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2018-2019, Linaro Ltd.
+ * Author: Georgi Djakov <georgi.djakov@linaro.org>
+ */
+
+#ifndef __LINUX_INTERCONNECT_H
+#define __LINUX_INTERCONNECT_H
+
+#include <linux/mutex.h>
+#include <linux/types.h>
+
+/* macros for converting to icc units */
+#define Bps_to_icc(x) ((x) / 1000)
+#define kBps_to_icc(x) (x)
+#define MBps_to_icc(x) ((x) * 1000)
+#define GBps_to_icc(x) ((x) * 1000 * 1000)
+#define bps_to_icc(x) (1)
+#define kbps_to_icc(x) ((x) / 8 + ((x) % 8 ? 1 : 0))
+#define Mbps_to_icc(x) ((x) * 1000 / 8)
+#define Gbps_to_icc(x) ((x) * 1000 * 1000 / 8)
+
+struct icc_path;
+struct device;
+
+#if IS_ENABLED(CONFIG_INTERCONNECT)
+
+struct icc_path *icc_get(struct device *dev, const int src_id,
+ const int dst_id);
+void icc_put(struct icc_path *path);
+int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw);
+
+#else
+
+static inline struct icc_path *icc_get(struct device *dev, const int src_id,
+ const int dst_id)
+{
+ return NULL;
+}
+
+static inline void icc_put(struct icc_path *path)
+{
+}
+
+static inline int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw)
+{
+ return 0;
+}
+
+#endif /* CONFIG_INTERCONNECT */
+
+#endif /* __LINUX_INTERCONNECT_H */