MIPS: Loongson 2F: Add CPU frequency scaling support

#ifndef __ASM_MIPS_CLOCK_H

#define __ASM_MIPS_CLOCK_H

#include <linux/kref.h>

#include <linux/list.h>

#include <linux/seq_file.h>

#include <linux/clk.h>

extern void (*cpu_wait) (void);

struct clk;

struct clk_ops {

	void (*init) (struct clk *clk);

	void (*enable) (struct clk *clk);

	void (*disable) (struct clk *clk);

	void (*recalc) (struct clk *clk);

	int (*set_rate) (struct clk *clk, unsigned long rate, int algo_id);

	long (*round_rate) (struct clk *clk, unsigned long rate);

};

struct clk {

	struct list_head node;

	const char *name;

	int id;

	struct module *owner;

	struct clk *parent;

	struct clk_ops *ops;

	struct kref kref;

	unsigned long rate;

	unsigned long flags;

};

#define CLK_ALWAYS_ENABLED	(1 << 0)

#define CLK_RATE_PROPAGATES	(1 << 1)

/* Should be defined by processor-specific code */

void arch_init_clk_ops(struct clk_ops **, int type);

int clk_init(void);

int __clk_enable(struct clk *);

void __clk_disable(struct clk *);

void clk_recalc_rate(struct clk *);

int clk_register(struct clk *);

void clk_unregister(struct clk *);

/* the exported API, in addition to clk_set_rate */

/**

 * clk_set_rate_ex - set the clock rate for a clock source, with additional parameter

 * @clk: clock source

 * @rate: desired clock rate in Hz

 * @algo_id: algorithm id to be passed down to ops->set_rate

 *

 * Returns success (0) or negative errno.

 */

int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id);

#endif				/* __ASM_MIPS_CLOCK_H */

#define PRID_REV_VR4181A	0x0070	/* Same as VR4122 */

#define PRID_REV_VR4130		0x0080

#define PRID_REV_34K_V1_0_2	0x0022

#define PRID_REV_LOONGSON2E	0x0002

#define PRID_REV_LOONGSON2F	0x0003

/*

 * Older processors used to encode processor version and revision in two

#define LOONGSON_PCIMAP_WIN(WIN, ADDR)	\

	((((ADDR)>>26) & LOONGSON_PCIMAP_PCIMAP_LO0) << ((WIN)*6))

/* Chip Config */

#ifdef CONFIG_CPU_SUPPORTS_CPUFREQ

#include <linux/cpufreq.h>

extern void loongson2_cpu_wait(void);

extern struct cpufreq_frequency_table loongson2_clockmod_table[];

/* Chip Config */

#define LOONGSON_CHIPCFG0		LOONGSON_REG(LOONGSON_REGBASE + 0x80)

#endif

obj-$(CONFIG_HAVE_STD_PC_SERIAL_PORT)	+= 8250-platform.o

obj-$(CONFIG_MIPS_CPUFREQ)	+= cpufreq/

EXTRA_CFLAGS += -Werror

#include <linux/ptrace.h>

#include <linux/smp.h>

#include <linux/stddef.h>

#include <linux/module.h>

#include <asm/bugs.h>

#include <asm/cpu.h>

 * the CPU very much.

 */

void (*cpu_wait)(void);

EXPORT_SYMBOL(cpu_wait);

static void r3081_wait(void)

{