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/*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
/************************************************************************
*
* pll.h
*
* (c) Copyright 2003-2004 Analog Devices, Inc. All rights reserved.
*
************************************************************************/
#ifndef __ASSEMBLER__
#pragma once
#pragma system_header
#endif
#ifndef _PLL_H
#define _PLL_H
#ifdef _MISRA_RULES
#pragma diag(push)
#pragma diag(suppress:misra_rule_6_3)
#endif /* _MISRA_RULES */
#define NO_STARTUP_SET 0
#define MAX_IN_STARTUP 1
#ifndef __ASSEMBLER__
enum clkctrl_t {
/* no modification of PLL rates in CRT startup - default */
no_startup_set=NO_STARTUP_SET,
/* CRT startup sets PLL rates to suitable maximum values */
max_in_startup=MAX_IN_STARTUP
};
/*
** Define __clk_ctrl to 1 to cause startup to set PLL rates for maximum
** speed performance rates. The default version defined in the runtime-
** libraries defines __clk_ctrl to 0 which disables the feature.
*/
extern enum clkctrl_t __clk_ctrl;
#ifdef __cplusplus
extern "C" {
#endif
#if defined(__ADSPLPBLACKFIN__)
/* Sets SSEL and CSEL bits in PLL_DIV to passed values.
** Returns -1 on failure.
*/
int pll_set_system_clocks(int _csel, int _ssel);
/*
** Sets MSEL and DF bits in PLL_CTL and LOCKCNT in PLL_LOCKCNT.
** Returns -1 on failure.
*/
int pll_set_system_vco(int _msel, int _df, int _lockcnt);
#endif /* __ADSPLPBLACKFIN__ */
#ifdef __cplusplus
}
#endif
#endif /* __ASSEMBLER__ */
#ifdef _MISRA_RULES
#pragma diag(pop)
#endif /* _MISRA_RULES */
#endif /* _PLL_H */
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