linux-stable/include/linux/sh_clk.h
Paul Mundt 79e7066415 sh: clkfwk: Kill off remaining debugfs cruft.
Now that all of the named string association with clocks has been
migrated to clkdev lookups there's no meaningful named topology that can
be constructed for a debugfs tree view. Get rid of the left over bits,
and shrink struct clk a bit in the process.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-11-11 16:11:41 +09:00

156 lines
4.3 KiB
C

#ifndef __SH_CLOCK_H
#define __SH_CLOCK_H
#include <linux/list.h>
#include <linux/seq_file.h>
#include <linux/cpufreq.h>
#include <linux/types.h>
#include <linux/kref.h>
#include <linux/clk.h>
#include <linux/err.h>
struct clk;
struct clk_mapping {
phys_addr_t phys;
void __iomem *base;
unsigned long len;
struct kref ref;
};
struct clk_ops {
#ifdef CONFIG_SH_CLK_CPG_LEGACY
void (*init)(struct clk *clk);
#endif
int (*enable)(struct clk *clk);
void (*disable)(struct clk *clk);
unsigned long (*recalc)(struct clk *clk);
int (*set_rate)(struct clk *clk, unsigned long rate);
int (*set_parent)(struct clk *clk, struct clk *parent);
long (*round_rate)(struct clk *clk, unsigned long rate);
};
struct clk {
struct list_head node;
struct clk *parent;
struct clk **parent_table; /* list of parents to */
unsigned short parent_num; /* choose between */
unsigned char src_shift; /* source clock field in the */
unsigned char src_width; /* configuration register */
struct clk_ops *ops;
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 clk_mapping *mapping;
struct cpufreq_frequency_table *freq_table;
unsigned int nr_freqs;
};
#define CLK_ENABLE_ON_INIT (1 << 0)
/* drivers/sh/clk.c */
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 *);
void clk_enable_init_clocks(void);
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);
long clk_rate_div_range_round(struct clk *clk, unsigned int div_min,
unsigned int div_max, unsigned long rate);
long clk_rate_mult_range_round(struct clk *clk, unsigned int mult_min,
unsigned int mult_max, unsigned long rate);
long clk_round_parent(struct clk *clk, unsigned long target,
unsigned long *best_freq, unsigned long *parent_freq,
unsigned int div_min, unsigned int div_max);
#define SH_CLK_MSTP32(_parent, _enable_reg, _enable_bit, _flags) \
{ \
.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(_parent, _reg, _shift, _div_bitmap, _flags) \
{ \
.parent = _parent, \
.enable_reg = (void __iomem *)_reg, \
.enable_bit = _shift, \
.arch_flags = _div_bitmap, \
.flags = _flags, \
}
struct clk_div4_table {
struct clk_div_mult_table *div_mult_table;
void (*kick)(struct clk *clk);
};
int sh_clk_div4_register(struct clk *clks, int nr,
struct clk_div4_table *table);
int sh_clk_div4_enable_register(struct clk *clks, int nr,
struct clk_div4_table *table);
int sh_clk_div4_reparent_register(struct clk *clks, int nr,
struct clk_div4_table *table);
#define SH_CLK_DIV6_EXT(_parent, _reg, _flags, _parents, \
_num_parents, _src_shift, _src_width) \
{ \
.parent = _parent, \
.enable_reg = (void __iomem *)_reg, \
.flags = _flags, \
.parent_table = _parents, \
.parent_num = _num_parents, \
.src_shift = _src_shift, \
.src_width = _src_width, \
}
#define SH_CLK_DIV6(_parent, _reg, _flags) \
SH_CLK_DIV6_EXT(_parent, _reg, _flags, NULL, 0, 0, 0)
int sh_clk_div6_register(struct clk *clks, int nr);
int sh_clk_div6_reparent_register(struct clk *clks, int nr);
#define CLKDEV_CON_ID(_id, _clk) { .con_id = _id, .clk = _clk }
#define CLKDEV_DEV_ID(_id, _clk) { .dev_id = _id, .clk = _clk }
#define CLKDEV_ICK_ID(_cid, _did, _clk) { .con_id = _cid, .dev_id = _did, .clk = _clk }
#endif /* __SH_CLOCK_H */