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/*
* Clock control driver for Freescale STMP37XX/STMP378X - internal header file
*
* Author: Vitaly Wool <vital@embeddedalley.com>
*
* Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved.
* Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved.
*/
/*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
#ifndef __ARCH_ARM_STMX3XXX_CLOCK_H__
#define __ARCH_ARM_STMX3XXX_CLOCK_H__
#ifndef __ASSEMBLER__
#include <linux/list.h>
struct clk {
struct list_head node;
struct module *owner;
const char *name;
struct clk *parent;
u32 rate;
s8 usage;
u32 flags;
u32 scale_reg;
u8 scale_shift;
u8 enable_shift;
u32 enable_reg;
int enable_wait;
int enable_negate;
u8 bypass_shift;
u32 bypass_reg;
u8 busy_bit;
u32 busy_reg;
u32 saved_div;
int (*enable) (struct clk *);
int (*disable) (struct clk *);
long (*get_rate) (struct clk *);
long (*round_rate) (struct clk *, u32);
int (*set_rate) (struct clk *, u32);
int (*set_parent) (struct clk *, struct clk *);
int (*propagate_rate) (struct clk *);
};
struct stmp3xxx_emi_scaling_data {
u32 emi_div;
u32 frac_div;
u32 cur_freq;
u32 new_freq;
};
#ifdef CONFIG_STMP378X_RAM_FREQ_SCALING
extern void stmp3xxx_ram_freq_scale(struct stmp3xxx_emi_scaling_data *);
extern u32 stmp3xxx_ram_funcs_sz;
#else
static inline void stmp3xxx_ram_freq_scale(struct stmp3xxx_emi_scaling_data *p)
{
}
static u32 stmp3xxx_ram_funcs_sz;
#endif
#endif /* __ASSEMBLER__ */
/* Flags */
#define RATE_PROPAGATES (1<<0)
#define NEEDS_INITIALIZATION (1<<1)
#define PARENT_SET_RATE (1<<2)
#define FIXED_RATE (1<<3)
#define ENABLED (1<<4)
#define NEEDS_SET_PARENT (1<<5)
#define PRESENT_ON_STMP37XX (1<<8)
#define PRESENT_ON_STMP378X (1<<9)
#define SCALING_DATA_EMI_DIV_OFFSET 0
#define SCALING_DATA_FRAC_DIV_OFFSET 4
#define SCALING_DATA_CUR_FREQ_OFFSET 8
#define SCALING_DATA_NEW_FREQ_OFFSET 12
#endif
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