- 根目录:
- arch
- arm
- plat-samsung
- include
- plat
- pll.h
/* linux/arch/arm/plat-samsung/include/plat/pll.h
*
* Copyright (c) 2009-2011 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* Copyright 2008 Openmoko, Inc.
* Copyright 2008 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
* http://armlinux.simtec.co.uk/
*
* Samsung PLL codes
*
* 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.
*/
#include <asm/div64.h>
#define S3C24XX_PLL_MDIV_MASK (0xFF)
#define S3C24XX_PLL_PDIV_MASK (0x1F)
#define S3C24XX_PLL_SDIV_MASK (0x3)
#define S3C24XX_PLL_MDIV_SHIFT (12)
#define S3C24XX_PLL_PDIV_SHIFT (4)
#define S3C24XX_PLL_SDIV_SHIFT (0)
static inline unsigned int s3c24xx_get_pll(unsigned int pllval,
unsigned int baseclk)
{
unsigned int mdiv, pdiv, sdiv;
uint64_t fvco;
mdiv = (pllval >> S3C24XX_PLL_MDIV_SHIFT) & S3C24XX_PLL_MDIV_MASK;
pdiv = (pllval >> S3C24XX_PLL_PDIV_SHIFT) & S3C24XX_PLL_PDIV_MASK;
sdiv = (pllval >> S3C24XX_PLL_SDIV_SHIFT) & S3C24XX_PLL_SDIV_MASK;
fvco = (uint64_t)baseclk * (mdiv + 8);
do_div(fvco, (pdiv + 2) << sdiv);
return (unsigned int)fvco;
}
#define S3C2416_PLL_MDIV_MASK (0x3FF)
#define S3C2416_PLL_PDIV_MASK (0x3F)
#define S3C2416_PLL_SDIV_MASK (0x7)
#define S3C2416_PLL_MDIV_SHIFT (14)
#define S3C2416_PLL_PDIV_SHIFT (5)
#define S3C2416_PLL_SDIV_SHIFT (0)
static inline unsigned int s3c2416_get_pll(unsigned int pllval,
unsigned int baseclk)
{
unsigned int mdiv, pdiv, sdiv;
uint64_t fvco;
mdiv = (pllval >> S3C2416_PLL_MDIV_SHIFT) & S3C2416_PLL_MDIV_MASK;
pdiv = (pllval >> S3C2416_PLL_PDIV_SHIFT) & S3C2416_PLL_PDIV_MASK;
sdiv = (pllval >> S3C2416_PLL_SDIV_SHIFT) & S3C2416_PLL_SDIV_MASK;
fvco = (uint64_t)baseclk * mdiv;
do_div(fvco, (pdiv << sdiv));
return (unsigned int)fvco;
}
#define S3C6400_PLL_MDIV_MASK (0x3FF)
#define S3C6400_PLL_PDIV_MASK (0x3F)
#define S3C6400_PLL_SDIV_MASK (0x7)
#define S3C6400_PLL_MDIV_SHIFT (16)
#define S3C6400_PLL_PDIV_SHIFT (8)
#define S3C6400_PLL_SDIV_SHIFT (0)
static inline unsigned long s3c6400_get_pll(unsigned long baseclk,
u32 pllcon)
{
u32 mdiv, pdiv, sdiv;
u64 fvco = baseclk;
mdiv = (pllcon >> S3C6400_PLL_MDIV_SHIFT) & S3C6400_PLL_MDIV_MASK;
pdiv = (pllcon >> S3C6400_PLL_PDIV_SHIFT) & S3C6400_PLL_PDIV_MASK;
sdiv = (pllcon >> S3C6400_PLL_SDIV_SHIFT) & S3C6400_PLL_SDIV_MASK;
fvco *= mdiv;
do_div(fvco, (pdiv << sdiv));
return (unsigned long)fvco;
}
#define PLL6553X_MDIV_MASK (0x7F)
#define PLL6553X_PDIV_MASK (0x1F)
#define PLL6553X_SDIV_MASK (0x3)
#define PLL6553X_KDIV_MASK (0xFFFF)
#define PLL6553X_MDIV_SHIFT (16)
#define PLL6553X_PDIV_SHIFT (8)
#define PLL6553X_SDIV_SHIFT (0)
static inline unsigned long s3c_get_pll6553x(unsigned long baseclk,
u32 pll_con0, u32 pll_con1)
{
unsigned long result;
u32 mdiv, pdiv, sdiv, kdiv;
u64 tmp;
mdiv = (pll_con0 >> PLL6553X_MDIV_SHIFT) & PLL6553X_MDIV_MASK;
pdiv = (pll_con0 >> PLL6553X_PDIV_SHIFT) & PLL6553X_PDIV_MASK;
sdiv = (pll_con0 >> PLL6553X_SDIV_SHIFT) & PLL6553X_SDIV_MASK;
kdiv = pll_con1 & PLL6553X_KDIV_MASK;
/*
* We need to multiple baseclk by mdiv (the integer part) and kdiv
* which is in 2^16ths, so shift mdiv up (does not overflow) and
* add kdiv before multiplying. The use of tmp is to avoid any
* overflows before shifting bac down into result when multipling
* by the mdiv and kdiv pair.
*/
tmp = baseclk;
tmp *= (mdiv << 16) + kdiv;
do_div(tmp, (pdiv << sdiv));
result = tmp >> 16;
return result;
}
#define PLL35XX_MDIV_MASK (0x3FF)
#define PLL35XX_PDIV_MASK (0x3F)
#define PLL35XX_SDIV_MASK (0x7)
#define PLL35XX_MDIV_SHIFT (16)
#define PLL35XX_PDIV_SHIFT (8)
#define PLL35XX_SDIV_SHIFT (0)
static inline unsigned long s5p_get_pll35xx(unsigned long baseclk, u32 pll_con)
{
u32 mdiv, pdiv, sdiv;
u64 fvco = baseclk;
mdiv = (pll_con >> PLL35XX_MDIV_SHIFT) & PLL35XX_MDIV_MASK;
pdiv = (pll_con >> PLL35XX_PDIV_SHIFT) & PLL35XX_PDIV_MASK;
sdiv = (pll_con >> PLL35XX_SDIV_SHIFT) & PLL35XX_SDIV_MASK;
fvco *= mdiv;
do_div(fvco, (pdiv << sdiv));
return (unsigned long)fvco;
}
#define PLL36XX_KDIV_MASK (0xFFFF)
#define PLL36XX_MDIV_MASK (0x1FF)
#define PLL36XX_PDIV_MASK (0x3F)
#define PLL36XX_SDIV_MASK (0x7)
#define PLL36XX_MDIV_SHIFT (16)
#define PLL36XX_PDIV_SHIFT (8)
#define PLL36XX_SDIV_SHIFT (0)
static inline unsigned long s5p_get_pll36xx(unsigned long baseclk,
u32 pll_con0, u32 pll_con1)
{
unsigned long result;
u32 mdiv, pdiv, sdiv, kdiv;
u64 tmp;
mdiv = (pll_con0 >> PLL36XX_MDIV_SHIFT) & PLL36XX_MDIV_MASK;
pdiv = (pll_con0 >> PLL36XX_PDIV_SHIFT) & PLL36XX_PDIV_MASK;
sdiv = (pll_con0 >> PLL36XX_SDIV_SHIFT) & PLL36XX_SDIV_MASK;
kdiv = pll_con1 & PLL36XX_KDIV_MASK;
tmp = baseclk;
tmp *= (mdiv << 16) + kdiv;
do_div(tmp, (pdiv << sdiv));
result = tmp >> 16;
return result;
}
#define PLL45XX_MDIV_MASK (0x3FF)
#define PLL45XX_PDIV_MASK (0x3F)
#define PLL45XX_SDIV_MASK (0x7)
#define PLL45XX_MDIV_SHIFT (16)
#define PLL45XX_PDIV_SHIFT (8)
#define PLL45XX_SDIV_SHIFT (0)
enum pll45xx_type_t {
pll_4500,
pll_4502,
pll_4508
};
static inline unsigned long s5p_get_pll45xx(unsigned long baseclk, u32 pll_con,
enum pll45xx_type_t pll_type)
{
u32 mdiv, pdiv, sdiv;
u64 fvco = baseclk;
mdiv = (pll_con >> PLL45XX_MDIV_SHIFT) & PLL45XX_MDIV_MASK;
pdiv = (pll_con >> PLL45XX_PDIV_SHIFT) & PLL45XX_PDIV_MASK;
sdiv = (pll_con >> PLL45XX_SDIV_SHIFT) & PLL45XX_SDIV_MASK;
if (pll_type == pll_4508)
sdiv = sdiv - 1;
fvco *= mdiv;
do_div(fvco, (pdiv << sdiv));
return (unsigned long)fvco;
}
/* CON0 bit-fields */
#define PLL46XX_MDIV_MASK (0x1FF)
#define PLL46XX_PDIV_MASK (0x3F)
#define PLL46XX_SDIV_MASK (0x7)
#define PLL46XX_LOCKED_SHIFT (29)
#define PLL46XX_MDIV_SHIFT (16)
#define PLL46XX_PDIV_SHIFT (8)
#define PLL46XX_SDIV_SHIFT (0)
/* CON1 bit-fields */
#define PLL46XX_MRR_MASK (0x1F)
#define PLL46XX_MFR_MASK (0x3F)
#define PLL46XX_KDIV_MASK (0xFFFF)
#define PLL4650C_KDIV_MASK (0xFFF)
#define PLL46XX_MRR_SHIFT (24)
#define PLL46XX_MFR_SHIFT (16)
#define PLL46XX_KDIV_SHIFT (0)
enum pll46xx_type_t {
pll_4600,
pll_4650,
pll_4650c,
};
static inline unsigned long s5p_get_pll46xx(unsigned long baseclk,
u32 pll_con0, u32 pll_con1,
enum pll46xx_type_t pll_type)
{
unsigned long result;
u32 mdiv, pdiv, sdiv, kdiv;
u64 tmp;
mdiv = (pll_con0 >> PLL46XX_MDIV_SHIFT) & PLL46XX_MDIV_MASK;
pdiv = (pll_con0 >> PLL46XX_PDIV_SHIFT) & PLL46XX_PDIV_MASK;
sdiv = (pll_con0 >> PLL46XX_SDIV_SHIFT) & PLL46XX_SDIV_MASK;
kdiv = pll_con1 & PLL46XX_KDIV_MASK;
if (pll_type == pll_4650c)
kdiv = pll_con1 & PLL4650C_KDIV_MASK;
else
kdiv = pll_con1 & PLL46XX_KDIV_MASK;
tmp = baseclk;
if (pll_type == pll_4600) {
tmp *= (mdiv << 16) + kdiv;
do_div(tmp, (pdiv << sdiv));
result = tmp >> 16;
} else {
tmp *= (mdiv << 10) + kdiv;
do_div(tmp, (pdiv << sdiv));
result = tmp >> 10;
}
return result;
}
#define PLL90XX_MDIV_MASK (0xFF)
#define PLL90XX_PDIV_MASK (0x3F)
#define PLL90XX_SDIV_MASK (0x7)
#define PLL90XX_KDIV_MASK (0xffff)
#define PLL90XX_LOCKED_SHIFT (29)
#define PLL90XX_MDIV_SHIFT (16)
#define PLL90XX_PDIV_SHIFT (8)
#define PLL90XX_SDIV_SHIFT (0)
#define PLL90XX_KDIV_SHIFT (0)
static inline unsigned long s5p_get_pll90xx(unsigned long baseclk,
u32 pll_con, u32 pll_conk)
{
unsigned long result;
u32 mdiv, pdiv, sdiv, kdiv;
u64 tmp;
mdiv = (pll_con >> PLL90XX_MDIV_SHIFT) & PLL90XX_MDIV_MASK;
pdiv = (pll_con >> PLL90XX_PDIV_SHIFT) & PLL90XX_PDIV_MASK;
sdiv = (pll_con >> PLL90XX_SDIV_SHIFT) & PLL90XX_SDIV_MASK;
kdiv = pll_conk & PLL90XX_KDIV_MASK;
/*
* We need to multiple baseclk by mdiv (the integer part) and kdiv
* which is in 2^16ths, so shift mdiv up (does not overflow) and
* add kdiv before multiplying. The use of tmp is to avoid any
* overflows before shifting bac down into result when multipling
* by the mdiv and kdiv pair.
*/
tmp = baseclk;
tmp *= (mdiv << 16) + kdiv;
do_div(tmp, (pdiv << sdiv));
result = tmp >> 16;
return result;
}
#define PLL65XX_MDIV_MASK (0x3FF)
#define PLL65XX_PDIV_MASK (0x3F)
#define PLL65XX_SDIV_MASK (0x7)
#define PLL65XX_MDIV_SHIFT (16)
#define PLL65XX_PDIV_SHIFT (8)
#define PLL65XX_SDIV_SHIFT (0)
static inline unsigned long s5p_get_pll65xx(unsigned long baseclk, u32 pll_con)
{
u32 mdiv, pdiv, sdiv;
u64 fvco = baseclk;
mdiv = (pll_con >> PLL65XX_MDIV_SHIFT) & PLL65XX_MDIV_MASK;
pdiv = (pll_con >> PLL65XX_PDIV_SHIFT) & PLL65XX_PDIV_MASK;
sdiv = (pll_con >> PLL65XX_SDIV_SHIFT) & PLL65XX_SDIV_MASK;
fvco *= mdiv;
do_div(fvco, (pdiv << sdiv));
return (unsigned long)fvco;
}