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49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
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/*
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* Low level clock header file for Telechips TCC architecture
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* (C) 2010 Hans J. Koch <hjk@linutronix.de>
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*
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* Licensed under the GPL v2.
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*/
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#ifndef __ASM_ARCH_TCC_CLOCK_H__
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#define __ASM_ARCH_TCC_CLOCK_H__
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#ifndef __ASSEMBLY__
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struct clk {
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struct clk *parent;
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/* id number of a root clock, 0 for normal clocks */
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int root_id;
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/* Reference count of clock enable/disable */
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int refcount;
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/* Address of associated BCLKCTRx register. Must be set. */
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void __iomem *bclkctr;
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/* Bit position for BCLKCTRx. Must be set. */
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int bclk_shift;
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/* Address of ACLKxxx register, if any. */
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void __iomem *aclkreg;
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/* get the current clock rate (always a fresh value) */
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unsigned long (*get_rate) (struct clk *);
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/* Function ptr to set the clock to a new rate. The rate must match a
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supported rate returned from round_rate. Leave blank if clock is not
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programmable */
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int (*set_rate) (struct clk *, unsigned long);
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/* Function ptr to round the requested clock rate to the nearest
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supported rate that is less than or equal to the requested rate. */
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unsigned long (*round_rate) (struct clk *, unsigned long);
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/* Function ptr to enable the clock. Leave blank if clock can not
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be gated. */
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int (*enable) (struct clk *);
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/* Function ptr to disable the clock. Leave blank if clock can not
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be gated. */
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void (*disable) (struct clk *);
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/* Function ptr to set the parent clock of the clock. */
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int (*set_parent) (struct clk *, struct clk *);
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};
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int clk_register(struct clk *clk);
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void clk_unregister(struct clk *clk);
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#endif /* __ASSEMBLY__ */
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#endif /* __ASM_ARCH_MXC_CLOCK_H__ */
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