86 lines
3.6 KiB
C
86 lines
3.6 KiB
C
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/************************************************************************
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File : Low Level clock API
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Common LLA functions (SOC independant)
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Author: F. Charpentier <fabrice.charpentier@st.com>
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Copyright (C) 2008 STMicroelectronics
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************************************************************************/
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#ifndef __CLKLLA_COMMON_H
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#define __CLKLLA_COMMON_H
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/* ========================================================================
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Name: clk_pll800_get_rate()
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Description: Convert input/mdiv/ndiv/pvid values to frequency for PLL800
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Params: 'input' freq (Hz), mdiv/ndiv/pvid values
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Output: '*rate' updated
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Return: Error code.
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======================================================================== */
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int clk_pll800_get_rate(unsigned long input, unsigned long mdiv,
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unsigned long ndiv, unsigned long pdiv, unsigned long *rate);
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/* ========================================================================
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Name: clk_pll1600_get_rate()
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Description: Convert input/mdiv/ndiv values to frequency for PLL1600
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Params: 'input' freq (Hz), mdiv/ndiv values
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Info: mdiv also called rdiv, ndiv also called ddiv
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Output: '*rate' updated with value of HS output
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Return: Error code.
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======================================================================== */
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int clk_pll1600_get_rate(unsigned long input, unsigned long mdiv,
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unsigned long ndiv, unsigned long *rate);
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/* ========================================================================
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Name: clk_pll800_get_params()
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Description: Freq to parameters computation for PLL800
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Input: input,output=input/output freqs (Hz)
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Output: updated *mdiv, *ndiv & *pdiv
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Return: 'clk_err_t' error code
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======================================================================== */
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int clk_pll800_get_params(unsigned long input, unsigned long output,
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unsigned long *mdiv, unsigned long *ndiv, unsigned long *pdiv);
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/* ========================================================================
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Name: clk_pll1600_get_params()
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Description: Freq to parameters computation for PLL1600
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Input: input,output=input/output freqs (Hz)
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Output: updated *mdiv & *ndiv
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Return: 'clk_err_t' error code
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======================================================================== */
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int clk_pll1600_get_params(unsigned long input, unsigned long output,
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unsigned long *mdiv, unsigned long *ndiv);
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/* ========================================================================
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Name: clk_fsyn_get_rate()
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Description: Parameters to freq computation for frequency synthesizers.
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WARNING: parameters are HARDWARE CODED values, not the one
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used in formula.
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======================================================================== */
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/* This has to be enhanced to support several Fsyn types */
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int clk_fsyn_get_rate(unsigned long input, unsigned long pe, unsigned long md,
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unsigned long sd, unsigned long *rate);
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/* ========================================================================
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Name: clk_fsyn_get_params()
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Description: Freq to parameters computation for frequency synthesizers
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Input: input=input freq (Hz), output=output freq (Hz)
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Output: updated *md, *pe & *sdiv
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WARNING: parameters are HARDWARE CODED values, not the one
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used in formula.
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Return: 'clk_err_t' error code
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======================================================================== */
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/* This has to be enhanced to support several Fsyn types */
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int clk_fsyn_get_params(unsigned long input, unsigned long output,
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unsigned long *md, unsigned long *pe, unsigned long *sdiv);
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#endif /* #ifndef __CLKLLA_COMMON_H */
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