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-rw-r--r--include/clk.h80
1 files changed, 80 insertions, 0 deletions
diff --git a/include/clk.h b/include/clk.h
index df4570c..254ad2b 100644
--- a/include/clk.h
+++ b/include/clk.h
@@ -1,6 +1,86 @@
+/*
+ * Copyright (c) 2015 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
#ifndef _CLK_H_
#define _CLK_H_
int soc_clk_dump(void);
+struct clk_ops {
+ /**
+ * get_rate() - Get current clock rate
+ *
+ * @dev: Device to check (UCLASS_CLK)
+ * @return clock rate in Hz, or -ve error code
+ */
+ ulong (*get_rate)(struct udevice *dev);
+
+ /**
+ * set_rate() - Set current clock rate
+ *
+ * @dev: Device to adjust
+ * @rate: New clock rate in Hz
+ * @return new rate, or -ve error code
+ */
+ ulong (*set_rate)(struct udevice *dev, ulong rate);
+
+ /**
+ * clk_set_periph_rate() - Set clock rate for a peripheral
+ *
+ * @dev: Device to adjust (UCLASS_CLK)
+ * @rate: New clock rate in Hz
+ * @return new clock rate in Hz, or -ve error code
+ */
+ ulong (*get_periph_rate)(struct udevice *dev, int periph);
+
+ /**
+ * clk_set_periph_rate() - Set current clock rate for a peripheral
+ *
+ * @dev: Device to update (UCLASS_CLK)
+ * @periph: Peripheral ID to cupdate
+ * @return new clock rate in Hz, or -ve error code
+ */
+ ulong (*set_periph_rate)(struct udevice *dev, int periph, ulong rate);
+};
+
+#define clk_get_ops(dev) ((struct clk_ops *)(dev)->driver->ops)
+
+/**
+ * clk_get_rate() - Get current clock rate
+ *
+ * @dev: Device to check (UCLASS_CLK)
+ * @return clock rate in Hz, or -ve error code
+ */
+ulong clk_get_rate(struct udevice *dev);
+
+/**
+ * set_rate() - Set current clock rate
+ *
+ * @dev: Device to adjust
+ * @rate: New clock rate in Hz
+ * @return new rate, or -ve error code
+ */
+ulong clk_set_rate(struct udevice *dev, ulong rate);
+
+/**
+ * clk_get_periph_rate() - Get current clock rate for a peripheral
+ *
+ * @dev: Device to check (UCLASS_CLK)
+ * @return clock rate in Hz, -ve error code
+ */
+ulong clk_get_periph_rate(struct udevice *dev, int periph);
+
+/**
+ * clk_set_periph_rate() - Set current clock rate for a peripheral
+ *
+ * @dev: Device to update (UCLASS_CLK)
+ * @periph: Peripheral ID to cupdate
+ * @return new clock rate in Hz, or -ve error code
+ */
+ulong clk_set_periph_rate(struct udevice *dev, int periph, ulong rate);
+
#endif /* _CLK_H_ */