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/* linux/arch/arm/mach-exynos/include/mach/busfreq_exynos5.h
*
* Copyright (c) 2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* EXYNOS4 - BUSFreq support
*
* 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 __ASM_ARCH_BUSFREQ_H
#define __ASM_ARCH_BUSFREQ_H __FILE__
#include <linux/notifier.h>
#include <linux/earlysuspend.h>
#include <mach/ppmu.h>
#define MAX_LOAD 100
#define LOAD_HISTORY_SIZE 5
#define DIVIDING_FACTOR 10000
#define TIMINGROW_OFFSET 0x34
enum busfreq_level_idx {
LV_0,
LV_1,
LV_2,
LV_3,
LV_INT_END,
LV_MIF_END = LV_3,
};
struct opp;
struct device;
struct busfreq_table;
struct busfreq_data {
bool use;
struct device *dev[PPMU_TYPE_END];
struct delayed_work worker;
unsigned long curr_freq[PPMU_TYPE_END];
unsigned long max_freq[PPMU_TYPE_END];
unsigned long min_freq[PPMU_TYPE_END];
struct regulator *vdd_reg[PPMU_TYPE_END];
unsigned int sampling_rate;
struct kobject *busfreq_kobject;
struct busfreq_table *table[PPMU_TYPE_END];
unsigned long long time_in_state[PPMU_TYPE_END][LV_INT_END];
unsigned long long last_time[PPMU_TYPE_END];
unsigned int load_history[PPMU_END][LOAD_HISTORY_SIZE];
int index;
struct notifier_block exynos_buspm_notifier;
struct notifier_block exynos_reboot_notifier;
struct notifier_block exynos_request_notifier;
struct early_suspend busfreq_early_suspend_handler;
struct attribute_group busfreq_attr_group;
int (*init) (struct device *dev, struct busfreq_data *data);
void (*monitor) (struct busfreq_data *data, struct opp **mif_opp,
struct opp **int_opp);
void (*target) (struct busfreq_data *data, enum ppmu_type type, int index);
unsigned int (*get_int_volt) (unsigned long freq);
int (*get_table_index) (unsigned long freq, enum ppmu_type type);
void (*busfreq_prepare) (int index);
void (*busfreq_post) (int index);
void (*busfreq_suspend) (void);
void (*busfreq_resume) (void);
/* Dividers calculated at boot/probe-time */
unsigned int lex_divtable[LV_INT_END];
unsigned int r0x_divtable[LV_INT_END];
unsigned int r1x_divtable[LV_INT_END];
unsigned int cdrex_divtable[LV_MIF_END];
unsigned int cdrex2_divtable[LV_MIF_END];
};
struct busfreq_table {
unsigned int idx;
unsigned int mem_clk;
unsigned int volt;
unsigned int clk_topdiv;
unsigned int clk_dmc0div;
unsigned int clk_dmc1div;
};
void exynos_request_apply(unsigned long freq);
unsigned long step_down(struct busfreq_data *data, enum ppmu_type type, int step);
int exynos5250_init(struct device *dev, struct busfreq_data *data);
#endif /* __ASM_ARCH_BUSFREQ_H */
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