Release 4.7 drivers/clk/pistachio/clk.h

/*
 * Copyright (C) 2014 Google, Inc.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 */

#ifndef __PISTACHIO_CLK_H

#define __PISTACHIO_CLK_H

#include <linux/clk-provider.h>


struct pistachio_gate {
	
unsigned int id;
	
unsigned long reg;
	
unsigned int shift;
	
const char *name;
	
const char *parent;
};


#define GATE(_id, _name, _pname, _reg, _shift)	\
	{                                       \
                .id     = _id,                  \
                .reg    = _reg,                 \
                .shift  = _shift,               \
                .name   = _name,                \
                .parent = _pname,               \
        }


struct pistachio_mux {
	
unsigned int id;
	
unsigned long reg;
	
unsigned int shift;
	
unsigned int num_parents;
	
const char *name;
	
const char **parents;
};


#define PNAME(x) static const char *x[] __initconst


#define MUX(_id, _name, _pnames, _reg, _shift)			\
	{                                                       \
                .id             = _id,                          \
                .reg            = _reg,                         \
                .shift          = _shift,                       \
                .name           = _name,                        \
                .parents        = _pnames,                      \
                .num_parents    = ARRAY_SIZE(_pnames)           \
        }



struct pistachio_div {
	
unsigned int id;
	
unsigned long reg;
	
unsigned int width;
	
unsigned int div_flags;
	
const char *name;
	
const char *parent;
};


#define DIV(_id, _name, _pname, _reg, _width)			\
	{                                                       \
                .id             = _id,                          \
                .reg            = _reg,                         \
                .width          = _width,                       \
                .div_flags      = 0,                            \
                .name           = _name,                        \
                .parent         = _pname,                       \
        }


#define DIV_F(_id, _name, _pname, _reg, _width, _div_flags)	\
	{                                                       \
                .id             = _id,                          \
                .reg            = _reg,                         \
                .width          = _width,                       \
                .div_flags      = _div_flags,                   \
                .name           = _name,                        \
                .parent         = _pname,                       \
        }


struct pistachio_fixed_factor {
	
unsigned int id;
	
unsigned int div;
	
const char *name;
	
const char *parent;
};


#define FIXED_FACTOR(_id, _name, _pname, _div)			\
	{                                                       \
                .id             = _id,                          \
                .div            = _div,                         \
                .name           = _name,                        \
                .parent         = _pname,                       \
        }


struct pistachio_pll_rate_table {
	
unsigned long long fref;
	
unsigned long long fout;
	
unsigned long long refdiv;
	
unsigned long long fbdiv;
	
unsigned long long postdiv1;
	
unsigned long long postdiv2;
	
unsigned long long frac;
};


enum pistachio_pll_type {
	
PLL_GF40LP_LAINT,
	
PLL_GF40LP_FRAC,
};


struct pistachio_pll {
	
unsigned int id;
	
unsigned long reg_base;
	
enum pistachio_pll_type type;
	
struct pistachio_pll_rate_table *rates;
	
unsigned int nr_rates;
	
const char *name;
	
const char *parent;
};


#define PLL(_id, _name, _pname, _type, _reg, _rates)		\
	{                                                       \
                .id             = _id,                          \
                .reg_base       = _reg,                         \
                .type           = _type,                        \
                .rates          = _rates,                       \
                .nr_rates       = ARRAY_SIZE(_rates),           \
                .name           = _name,                        \
                .parent         = _pname,                       \
        }


#define PLL_FIXED(_id, _name, _pname, _type, _reg)		\
	{                                                       \
                .id             = _id,                          \
                .reg_base       = _reg,                         \
                .type           = _type,                        \
                .rates          = NULL,                         \
                .nr_rates       = 0,                            \
                .name           = _name,                        \
                .parent         = _pname,                       \
        }


struct pistachio_clk_provider {
	
struct device_node *node;
	
void __iomem *base;
	
struct clk_onecell_data clk_data;
};

extern struct pistachio_clk_provider *
pistachio_clk_alloc_provider(struct device_node *node, unsigned int num_clks);
extern void pistachio_clk_register_provider(struct pistachio_clk_provider *p);

extern void pistachio_clk_register_gate(struct pistachio_clk_provider *p,
					struct pistachio_gate *gate,
					unsigned int num);
extern void pistachio_clk_register_mux(struct pistachio_clk_provider *p,
				       struct pistachio_mux *mux,
				       unsigned int num);
extern void pistachio_clk_register_div(struct pistachio_clk_provider *p,
				       struct pistachio_div *div,
				       unsigned int num);
extern void
pistachio_clk_register_fixed_factor(struct pistachio_clk_provider *p,
				    struct pistachio_fixed_factor *ff,
				    unsigned int num);
extern void pistachio_clk_register_pll(struct pistachio_clk_provider *p,
				       struct pistachio_pll *pll,
				       unsigned int num);

extern void pistachio_clk_force_enable(struct pistachio_clk_provider *p,
				       unsigned int *clk_ids, unsigned int num);

#endif
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Directory: drivers/clk/pistachio

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