/*
 *  linux/arch/arm/mach-omap2/clock.h
 *
 *  Copyright (C) 2005-2009 Texas Instruments, Inc.
 *  Copyright (C) 2004-2011 Nokia Corporation
 *
 *  Contacts:
 *  Richard Woodruff <r-woodruff2@ti.com>
 *  Paul Walmsley
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef __ARCH_ARM_MACH_OMAP2_CLOCK_H
#define __ARCH_ARM_MACH_OMAP2_CLOCK_H

#include <linux/kernel.h>
#include <linux/list.h>

#include <linux/clkdev.h>
#include <linux/clk-provider.h>

struct omap_clk {
	u16				cpu;
	struct clk_lookup		lk;
};

#define CLK(dev, con, ck, cp)		\
	{				\
		 .cpu = cp,		\
		.lk = {			\
			.dev_id = dev,	\
			.con_id = con,	\
			.clk = ck,	\
		},			\
	}

/* Platform flags for the clkdev-OMAP integration code */
#define CK_242X		(1 << 0)
#define CK_243X		(1 << 1)	/* 243x, 253x */
#define CK_3430ES1	(1 << 2)	/* 34xxES1 only */
#define CK_3430ES2PLUS	(1 << 3)	/* 34xxES2, ES3, non-Sitara 35xx only */
#define CK_AM35XX	(1 << 4)	/* Sitara AM35xx */
#define CK_36XX		(1 << 5)	/* 36xx/37xx-specific clocks */
#define CK_443X		(1 << 6)
#define CK_TI816X	(1 << 7)
#define CK_446X		(1 << 8)
#define CK_AM33XX	(1 << 9)	/* AM33xx specific clocks */


#define CK_34XX		(CK_3430ES1 | CK_3430ES2PLUS)
#define CK_3XXX		(CK_34XX | CK_AM35XX | CK_36XX)

struct clockdomain;
#define to_clk_hw_omap(_hw) container_of(_hw, struct clk_hw_omap, hw)

#define DEFINE_STRUCT_CLK(_name, _parent_array_name, _clkops_name)	\
	static struct clk _name = {				\
		.name = #_name,					\
		.hw = &_name##_hw.hw,				\
		.parent_names = _parent_array_name,		\
		.num_parents = ARRAY_SIZE(_parent_array_name),	\
		.ops = &_clkops_name,				\
	};

#define DEFINE_STRUCT_CLK_HW_OMAP(_name, _clkdm_name)		\
	static struct clk_hw_omap _name##_hw = {		\
		.hw = {						\
			.clk = &_name,				\
		},						\
		.clkdm_name = _clkdm_name,			\
	};

#define DEFINE_CLK_OMAP_MUX(_name, _clkdm_name, _clksel,	\
			    _clksel_reg, _clksel_mask,		\
			    _parent_names, _ops)		\
	static struct clk _name;				\
	static struct clk_hw_omap _name##_hw = {		\
		.hw = {						\
			.clk = &_name,				\
		},						\
		.clksel		= _clksel,			\
		.clksel_reg	= _clksel_reg,			\
		.clksel_mask	= _clksel_mask,			\
		.clkdm_name	= _clkdm_name,			\
	};							\
	DEFINE_STRUCT_CLK(_name, _parent_names, _ops);

#define DEFINE_CLK_OMAP_MUX_GATE(_name, _clkdm_name, _clksel,	\
				 _clksel_reg, _clksel_mask,	\
				 _enable_reg, _enable_bit,	\
				 _hwops, _parent_names, _ops)	\
	static struct clk _name;				\
	static struct clk_hw_omap _name##_hw = {		\
		.hw = {						\
			.clk = &_name,				\
		},						\
		.ops		= _hwops,			\
		.enable_reg	= _enable_reg,			\
		.enable_bit	= _enable_bit,			\
		.clksel		= _clksel,			\
		.clksel_reg	= _clksel_reg,			\
		.clksel_mask	= _clksel_mask,			\
		.clkdm_name	= _clkdm_name,			\
	};							\
	DEFINE_STRUCT_CLK(_name, _parent_names, _ops);

#define DEFINE_CLK_OMAP_HSDIVIDER(_name, _parent_name,		\
				_parent_ptr, _flags,		\
				_clksel_reg, _clksel_mask)	\
	static const struct clksel _name##_div[] = {		\
		{						\
			.parent = _parent_ptr,			\
			.rates = div31_1to31_rates		\
		},						\
		{ .parent = NULL },				\
	};							\
	static struct clk _name;				\
	static const char *_name##_parent_names[] = {		\
		_parent_name,					\
	};							\
	static struct clk_hw_omap _name##_hw = {		\
		.hw = {						\
			.clk = &_name,				\
		},						\
		.clksel		= _name##_div,			\
		.clksel_reg	= _clksel_reg,			\
		.clksel_mask	= _clksel_mask,			\
		.ops		= &clkhwops_omap4_dpllmx,	\
	};							\
	DEFINE_STRUCT_CLK(_name, _name##_parent_names, omap_hsdivider_ops);

/* struct clksel_rate.flags possibilities */
#define RATE_IN_242X		(1 << 0)
#define RATE_IN_243X		(1 << 1)
#define RATE_IN_3430ES1		(1 << 2)	/* 3430ES1 rates only */
#define RATE_IN_3430ES2PLUS	(1 << 3)	/* 3430 ES >= 2 rates only */
#define RATE_IN_36XX		(1 << 4)
#define RATE_IN_4430		(1 << 5)
#define RATE_IN_TI816X		(1 << 6)
#define RATE_IN_4460		(1 << 7)
#define RATE_IN_AM33XX		(1 << 8)
#define RATE_IN_TI814X		(1 << 9)

#define RATE_IN_24XX		(RATE_IN_242X | RATE_IN_243X)
#define RATE_IN_34XX		(RATE_IN_3430ES1 | RATE_IN_3430ES2PLUS)
#define RATE_IN_3XXX		(RATE_IN_34XX | RATE_IN_36XX)
#define RATE_IN_44XX		(RATE_IN_4430 | RATE_IN_4460)

/* RATE_IN_3430ES2PLUS_36XX includes 34xx/35xx with ES >=2, and all 36xx/37xx */
#define RATE_IN_3430ES2PLUS_36XX	(RATE_IN_3430ES2PLUS | RATE_IN_36XX)


/**
 * struct clksel_rate - register bitfield values corresponding to clk divisors
 * @val: register bitfield value (shifted to bit 0)
 * @div: clock divisor corresponding to @val
 * @flags: (see "struct clksel_rate.flags possibilities" above)
 *
 * @val should match the value of a read from struct clk.clksel_reg
 * AND'ed with struct clk.clksel_mask, shifted right to bit 0.
 *
 * @div is the divisor that should be applied to the parent clock's rate
 * to produce the current clock's rate.
 */
struct clksel_rate {
	u32			val;
	u8			div;
	u16			flags;
};

/**
 * struct clksel - available parent clocks, and a pointer to their divisors
 * @parent: struct clk * to a possible parent clock
 * @rates: available divisors for this parent clock
 *
 * A struct clksel is always associated with one or more struct clks
 * and one or more struct clksel_rates.
 */
struct clksel {