diff options
Diffstat (limited to 'include/asm-arm/arch-s3c2410/regs-clock.h')
| -rw-r--r-- | include/asm-arm/arch-s3c2410/regs-clock.h | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/include/asm-arm/arch-s3c2410/regs-clock.h b/include/asm-arm/arch-s3c2410/regs-clock.h index 16f4c3cc1388..66794b13e185 100644 --- a/include/asm-arm/arch-s3c2410/regs-clock.h +++ b/include/asm-arm/arch-s3c2410/regs-clock.h @@ -18,7 +18,8 @@ * 10-Feb-2005 Ben Dooks Fixed CAMDIVN address (Guillaume Gourat) * 10-Mar-2005 Lucas Villa Real Changed S3C2410_VA to S3C24XX_VA * 27-Aug-2005 Ben Dooks Add clock-slow info - */ + * 20-Oct-2005 Ben Dooks Fixed overflow in PLL (Guillaume Gourat) +*/ #ifndef __ASM_ARM_REGS_CLOCK #define __ASM_ARM_REGS_CLOCK "$Id: clock.h,v 1.4 2003/04/30 14:50:51 ben Exp $" @@ -83,10 +84,13 @@ #ifndef __ASSEMBLY__ +#include <asm/div64.h> + static inline unsigned int -s3c2410_get_pll(int pllval, int baseclk) +s3c2410_get_pll(unsigned int pllval, unsigned int baseclk) { - int mdiv, pdiv, sdiv; + unsigned int mdiv, pdiv, sdiv; + uint64_t fvco; mdiv = pllval >> S3C2410_PLLCON_MDIVSHIFT; pdiv = pllval >> S3C2410_PLLCON_PDIVSHIFT; @@ -96,7 +100,10 @@ s3c2410_get_pll(int pllval, int baseclk) pdiv &= S3C2410_PLLCON_PDIVMASK; sdiv &= S3C2410_PLLCON_SDIVMASK; - return (baseclk * (mdiv + 8)) / ((pdiv + 2) << sdiv); + fvco = (uint64_t)baseclk * (mdiv + 8); + do_div(fvco, (pdiv + 2) << sdiv); + + return (unsigned int)fvco; } #endif /* __ASSEMBLY__ */ |