/*
 * drivers/clk/at91/pmc.h
 *
 *  Copyright (C) 2013 Boris BREZILLON <b.brezillon@overkiz.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#ifndef __PMC_H_
#define __PMC_H_

#include <io.h>
#include <linux/spinlock.h>
#include <printk.h>

struct pmc_data {
	unsigned int ncore;
	struct clk **chws;
	unsigned int nsystem;
	struct clk **shws;
	unsigned int nperiph;
	struct clk **phws;
	unsigned int ngck;
	struct clk **ghws;
};

struct clk_range {
	unsigned long min;
	unsigned long max;
};

#define CLK_RANGE(MIN, MAX) {.min = MIN, .max = MAX,}

struct clk_master_layout {
	u32 mask;
	u8 pres_shift;
};

extern const struct clk_master_layout at91rm9200_master_layout;
extern const struct clk_master_layout at91sam9x5_master_layout;

struct clk_master_characteristics {
	struct clk_range output;
	u32 divisors[4];
	u8 have_div3_pres;
};

struct clk_pll_layout {
	u32 pllr_mask;
	u16 mul_mask;
	u8 mul_shift;
};

extern const struct clk_pll_layout at91rm9200_pll_layout;
extern const struct clk_pll_layout at91sam9g45_pll_layout;
extern const struct clk_pll_layout at91sam9g20_pllb_layout;
extern const struct clk_pll_layout sama5d3_pll_layout;

struct clk_pll_characteristics {
	struct clk_range input;
	int num_output;
	struct clk_range *output;
	u16 *icpll;
	u8 *out;
};

struct clk_programmable_layout {
	u8 pres_shift;
	u8 css_mask;
	u8 have_slck_mck;
};

extern const struct clk_programmable_layout at91rm9200_programmable_layout;
extern const struct clk_programmable_layout at91sam9g45_programmable_layout;
extern const struct clk_programmable_layout at91sam9x5_programmable_layout;

#define ndck(a, s) (a[s - 1].id + 1)
#define nck(a) (a[ARRAY_SIZE(a) - 1].id + 1)
struct pmc_data *pmc_data_allocate(unsigned int ncore, unsigned int nsystem,
				   unsigned int nperiph, unsigned int ngck);
void pmc_data_free(struct pmc_data *pmc_data);

int of_at91_get_clk_range(struct device_node *np, const char *propname,
			  struct clk_range *range);

struct clk *of_clk_hw_pmc_get(struct of_phandle_args *clkspec, void *data);

struct clk *
at91_clk_register_generated(struct regmap *regmap,
			    const char *name, const char **parent_names,
			    u8 num_parents, u8 id, bool pll_audio,
			    const struct clk_range *range);

struct clk *
at91_clk_register_h32mx(struct regmap *regmap, const char *name,
			const char *parent_name);

struct clk *
at91_clk_register_main_rc_osc(struct regmap *regmap, const char *name,
			      u32 frequency, u32 accuracy);
struct clk *
at91_clk_register_main_osc(struct regmap *regmap, const char *name,
			   const char *parent_name, bool bypass);
struct clk *
at91_clk_register_rm9200_main(struct regmap *regmap,
			      const char *name,
			      const char *parent_name);
struct clk *
at91_clk_register_sam9x5_main(struct regmap *regmap, const char *name,
			      const char **parent_names, int num_parents);

struct clk *
at91_clk_register_master(struct regmap *regmap, const char *name,
			 int num_parents, const char **parent_names,
			 const struct clk_master_layout *layout,
			 const struct clk_master_characteristics *characteristics);

struct clk *
at91_clk_register_peripheral(struct regmap *regmap, const char *name,
			     const char *parent_name, u32 id);
struct clk *
at91_clk_register_sam9x5_peripheral(struct regmap *regmap,
				    const char *name, const char *parent_name,
				    u32 id, const struct clk_range *range);

struct clk *
at91_clk_register_pll(struct regmap *regmap, const char *name,
		      const char *parent_name, u8 id,
		      const struct clk_pll_layout *layout,
		      const struct clk_pll_characteristics *characteristics);
struct clk *
at91_clk_register_plldiv(struct regmap *regmap, const char *name,
			 const char *parent_name);

struct clk *
at91_clk_register_programmable(struct regmap *regmap, const char *name,
			       const char **parent_names, u8 num_parents, u8 id,
			       const struct clk_programmable_layout *layout);

struct clk *
at91_clk_register_sam9260_slow(struct regmap *regmap,
			       const char *name,
			       const char **parent_names,
			       int num_parents);

struct clk *
at91sam9x5_clk_register_smd(struct regmap *regmap, const char *name,
			    const char **parent_names, u8 num_parents);

struct clk *
at91_clk_register_system(struct regmap *regmap, const char *name,
			 const char *parent_name, u8 id);

struct clk *
at91sam9x5_clk_register_usb(struct regmap *regmap, const char *name,
			    const char **parent_names, u8 num_parents);
struct clk *
at91sam9n12_clk_register_usb(struct regmap *regmap, const char *name,
			     const char *parent_name);
struct clk *
at91rm9200_clk_register_usb(struct regmap *regmap, const char *name,
			    const char *parent_name, const u32 *divisors);

struct clk *
at91_clk_register_utmi(struct regmap *regmap_pmc, struct regmap *regmap_sfr,
		       const char *name, const char *parent_name);

#ifdef CONFIG_PM
void pmc_register_id(u8 id);
void pmc_register_pck(u8 pck);
#else
static inline void pmc_register_id(u8 id) {}
static inline void pmc_register_pck(u8 pck) {}
#endif

#endif /* __PMC_H_ */