icst.h

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/*
 *  arch/arm/include/asm/hardware/icst.h
 *
 *  Copyright (C) 2003 Deep Blue Solutions, Ltd, All Rights Reserved.
 *
 * 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.
 *
 *  Support functions for calculating clocks/divisors for the ICST
 *  clock generators.  See http://www.idt.com/ for more information
 *  on these devices.
 */
#ifndef ASMARM_HARDWARE_ICST_H
#define ASMARM_HARDWARE_ICST_H

struct icst_params {
    unsigned long   ref;
    unsigned long   vco_max;    /* inclusive */
    unsigned long   vco_min;    /* exclusive */
    unsigned short  vd_min;     /* inclusive */
    unsigned short  vd_max;     /* inclusive */
    unsigned char   rd_min;     /* inclusive */
    unsigned char   rd_max;     /* inclusive */
    const unsigned char *s2div; /* chip specific s2div array */
    const unsigned char *idx2s; /* chip specific idx2s array */
};

struct icst_vco {
    unsigned short  v;
    unsigned char   r;
    unsigned char   s;
};

unsigned long icst_hz(const struct icst_params *p, struct icst_vco vco);
struct icst_vco icst_hz_to_vco(const struct icst_params *p, unsigned long freq);

/*
 * ICST307 VCO frequency must be between 6MHz and 200MHz (3.3 or 5V).
 * This frequency is pre-output divider.
 */
#define ICST307_VCO_MIN 6000000
#define ICST307_VCO_MAX 200000000

extern const unsigned char icst307_s2div[];
extern const unsigned char icst307_idx2s[];

/*
 * ICST525 VCO frequency must be between 10MHz and 200MHz (3V) or 320MHz (5V).
 * This frequency is pre-output divider.
 */
#define ICST525_VCO_MIN     10000000
#define ICST525_VCO_MAX_3V  200000000
#define ICST525_VCO_MAX_5V  320000000

extern const unsigned char icst525_s2div[];
extern const unsigned char icst525_idx2s[];

#endif