87 lines
2.0 KiB
C
87 lines
2.0 KiB
C
/*
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* Copyright (c) 2015 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _CLK_H_
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#define _CLK_H_
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int soc_clk_dump(void);
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struct clk_ops {
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/**
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* get_rate() - Get current clock rate
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*
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* @dev: Device to check (UCLASS_CLK)
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* @return clock rate in Hz, or -ve error code
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*/
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ulong (*get_rate)(struct udevice *dev);
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/**
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* set_rate() - Set current clock rate
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*
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* @dev: Device to adjust
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* @rate: New clock rate in Hz
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* @return new rate, or -ve error code
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*/
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ulong (*set_rate)(struct udevice *dev, ulong rate);
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/**
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* clk_set_periph_rate() - Set clock rate for a peripheral
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*
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* @dev: Device to adjust (UCLASS_CLK)
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* @rate: New clock rate in Hz
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* @return new clock rate in Hz, or -ve error code
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*/
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ulong (*get_periph_rate)(struct udevice *dev, int periph);
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/**
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* clk_set_periph_rate() - Set current clock rate for a peripheral
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*
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* @dev: Device to update (UCLASS_CLK)
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* @periph: Peripheral ID to cupdate
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* @return new clock rate in Hz, or -ve error code
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*/
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ulong (*set_periph_rate)(struct udevice *dev, int periph, ulong rate);
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};
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#define clk_get_ops(dev) ((struct clk_ops *)(dev)->driver->ops)
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/**
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* clk_get_rate() - Get current clock rate
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*
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* @dev: Device to check (UCLASS_CLK)
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* @return clock rate in Hz, or -ve error code
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*/
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ulong clk_get_rate(struct udevice *dev);
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/**
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* set_rate() - Set current clock rate
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*
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* @dev: Device to adjust
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* @rate: New clock rate in Hz
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* @return new rate, or -ve error code
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*/
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ulong clk_set_rate(struct udevice *dev, ulong rate);
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/**
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* clk_get_periph_rate() - Get current clock rate for a peripheral
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*
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* @dev: Device to check (UCLASS_CLK)
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* @return clock rate in Hz, -ve error code
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*/
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ulong clk_get_periph_rate(struct udevice *dev, int periph);
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/**
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* clk_set_periph_rate() - Set current clock rate for a peripheral
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*
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* @dev: Device to update (UCLASS_CLK)
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* @periph: Peripheral ID to cupdate
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* @return new clock rate in Hz, or -ve error code
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*/
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ulong clk_set_periph_rate(struct udevice *dev, int periph, ulong rate);
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#endif /* _CLK_H_ */
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