diff options
Diffstat (limited to 'arch/sh/include/asm/clock.h')
| -rw-r--r-- | arch/sh/include/asm/clock.h | 113 | 
1 files changed, 88 insertions, 25 deletions
diff --git a/arch/sh/include/asm/clock.h b/arch/sh/include/asm/clock.h index 2f6c9627bc1..9fe7d7f8af4 100644 --- a/arch/sh/include/asm/clock.h +++ b/arch/sh/include/asm/clock.h @@ -1,9 +1,9 @@  #ifndef __ASM_SH_CLOCK_H  #define __ASM_SH_CLOCK_H -#include <linux/kref.h>  #include <linux/list.h>  #include <linux/seq_file.h> +#include <linux/cpufreq.h>  #include <linux/clk.h>  #include <linux/err.h> @@ -11,9 +11,9 @@ struct clk;  struct clk_ops {  	void (*init)(struct clk *clk); -	void (*enable)(struct clk *clk); +	int (*enable)(struct clk *clk);  	void (*disable)(struct clk *clk); -	void (*recalc)(struct clk *clk); +	unsigned long (*recalc)(struct clk *clk);  	int (*set_rate)(struct clk *clk, unsigned long rate, int algo_id);  	int (*set_parent)(struct clk *clk, struct clk *parent);  	long (*round_rate)(struct clk *clk, unsigned long rate); @@ -28,43 +28,47 @@ struct clk {  	struct clk		*parent;  	struct clk_ops		*ops; -	struct kref		kref; +	struct list_head	children; +	struct list_head	sibling;	/* node for children */ + +	int			usecount;  	unsigned long		rate;  	unsigned long		flags; + +	void __iomem		*enable_reg; +	unsigned int		enable_bit; +  	unsigned long		arch_flags; +	void			*priv; +	struct dentry		*dentry; +	struct cpufreq_frequency_table *freq_table;  }; -#define CLK_ALWAYS_ENABLED	(1 << 0) -#define CLK_RATE_PROPAGATES	(1 << 1) +struct clk_lookup { +	struct list_head	node; +	const char		*dev_id; +	const char		*con_id; +	struct clk		*clk; +}; + +#define CLK_ENABLE_ON_INIT	(1 << 0)  /* Should be defined by processor-specific code */ -void arch_init_clk_ops(struct clk_ops **, int type); +void __deprecated arch_init_clk_ops(struct clk_ops **, int type);  int __init arch_clk_init(void);  /* arch/sh/kernel/cpu/clock.c */  int clk_init(void); - -void clk_recalc_rate(struct clk *); - +unsigned long followparent_recalc(struct clk *); +void recalculate_root_clocks(void); +void propagate_rate(struct clk *); +int clk_reparent(struct clk *child, struct clk *parent);  int clk_register(struct clk *);  void clk_unregister(struct clk *); -static inline int clk_always_enable(const char *id) -{ -	struct clk *clk; -	int ret; - -	clk = clk_get(NULL, id); -	if (IS_ERR(clk)) -		return PTR_ERR(clk); - -	ret = clk_enable(clk); -	if (ret) -		clk_put(clk); - -	return ret; -} +/* arch/sh/kernel/cpu/clock-cpg.c */ +int __init __deprecated cpg_clk_init(void);  /* the exported API, in addition to clk_set_rate */  /** @@ -96,4 +100,63 @@ enum clk_sh_algo_id {  	IP_N1,  }; + +struct clk_div_mult_table { +	unsigned int *divisors; +	unsigned int nr_divisors; +	unsigned int *multipliers; +	unsigned int nr_multipliers; +}; + +struct cpufreq_frequency_table; +void clk_rate_table_build(struct clk *clk, +			  struct cpufreq_frequency_table *freq_table, +			  int nr_freqs, +			  struct clk_div_mult_table *src_table, +			  unsigned long *bitmap); + +long clk_rate_table_round(struct clk *clk, +			  struct cpufreq_frequency_table *freq_table, +			  unsigned long rate); + +int clk_rate_table_find(struct clk *clk, +			struct cpufreq_frequency_table *freq_table, +			unsigned long rate); + +#define SH_CLK_MSTP32(_name, _id, _parent, _enable_reg,	\ +	    _enable_bit, _flags)			\ +{							\ +	.name		= _name,			\ +	.id		= _id,				\ +	.parent		= _parent,			\ +	.enable_reg	= (void __iomem *)_enable_reg,	\ +	.enable_bit	= _enable_bit,			\ +	.flags		= _flags,			\ +} + +int sh_clk_mstp32_register(struct clk *clks, int nr); + +#define SH_CLK_DIV4(_name, _parent, _reg, _shift, _div_bitmap, _flags)	\ +{									\ +	.name = _name,							\ +	.parent = _parent,						\ +	.enable_reg = (void __iomem *)_reg,				\ +	.enable_bit = _shift,						\ +	.arch_flags = _div_bitmap,					\ +	.flags = _flags,						\ +} + +int sh_clk_div4_register(struct clk *clks, int nr, +			 struct clk_div_mult_table *table); + +#define SH_CLK_DIV6(_name, _parent, _reg, _flags)	\ +{							\ +	.name = _name,					\ +	.parent = _parent,				\ +	.enable_reg = (void __iomem *)_reg,		\ +	.flags = _flags,				\ +} + +int sh_clk_div6_register(struct clk *clks, int nr); +  #endif /* __ASM_SH_CLOCK_H */  |