arch/arm/include/asm/hardware/icst.h

   1 /*
   2  *  arch/arm/include/asm/hardware/icst.h
   3  *
   4  *  Copyright (C) 2003 Deep Blue Solutions, Ltd, All Rights Reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  *  Support functions for calculating clocks/divisors for the ICST
  11  *  clock generators.  See http://www.idt.com/ for more information
  12  *  on these devices.
  13  */
  14 #ifndef ASMARM_HARDWARE_ICST_H
  15 #define ASMARM_HARDWARE_ICST_H
  16
  17 struct icst_params {
  18         unsigned long   ref;
  19         unsigned long   vco_max;        /* inclusive */
  20         unsigned long   vco_min;        /* exclusive */
  21         unsigned short  vd_min;         /* inclusive */
  22         unsigned short  vd_max;         /* inclusive */
  23         unsigned char   rd_min;         /* inclusive */
  24         unsigned char   rd_max;         /* inclusive */
  25         const unsigned char *s2div;     /* chip specific s2div array */
  26         const unsigned char *idx2s;     /* chip specific idx2s array */
  27 };
  28
  29 struct icst_vco {
  30         unsigned short  v;
  31         unsigned char   r;
  32         unsigned char   s;
  33 };
  34
  35 unsigned long icst_hz(const struct icst_params *p, struct icst_vco vco);
  36 struct icst_vco icst_hz_to_vco(const struct icst_params *p, unsigned long freq);
  37
  38 /*
  39  * ICST307 VCO frequency must be between 6MHz and 200MHz (3.3 or 5V).
  40  * This frequency is pre-output divider.
  41  */
  42 #define ICST307_VCO_MIN 6000000
  43 #define ICST307_VCO_MAX 200000000
  44
  45 extern const unsigned char icst307_s2div[];
  46 extern const unsigned char icst307_idx2s[];
  47
  48 /*
  49  * ICST525 VCO frequency must be between 10MHz and 200MHz (3V) or 320MHz (5V).
  50  * This frequency is pre-output divider.
  51  */
  52 #define ICST525_VCO_MIN         10000000
  53 #define ICST525_VCO_MAX_3V      200000000
  54 #define ICST525_VCO_MAX_5V      320000000
  55
  56 extern const unsigned char icst525_s2div[];
  57 extern const unsigned char icst525_idx2s[];
  58
  59 #endif