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Release 4.14 arch/blackfin/include/mach-common/pll.h

/*
 * Copyright 2005-2010 Analog Devices Inc.
 *
 * Licensed under the GPL-2 or later.
 */

#ifndef _MACH_COMMON_PLL_H

#define _MACH_COMMON_PLL_H

#ifndef __ASSEMBLY__

#include <asm/blackfin.h>
#include <asm/irqflags.h>

#ifndef bfin_iwr_restore

static inline void bfin_iwr_restore(unsigned long iwr0, unsigned long iwr1, unsigned long iwr2) { #ifdef SIC_IWR bfin_write_SIC_IWR(iwr0); #else bfin_write_SIC_IWR0(iwr0); # ifdef SIC_IWR1 bfin_write_SIC_IWR1(iwr1); # endif # ifdef SIC_IWR2 bfin_write_SIC_IWR2(iwr2); # endif #endif }

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#endif #ifndef bfin_iwr_save
static inline void bfin_iwr_save(unsigned long niwr0, unsigned long niwr1, unsigned long niwr2, unsigned long *iwr0, unsigned long *iwr1, unsigned long *iwr2) { #ifdef SIC_IWR *iwr0 = bfin_read_SIC_IWR(); #else *iwr0 = bfin_read_SIC_IWR0(); # ifdef SIC_IWR1 *iwr1 = bfin_read_SIC_IWR1(); # endif # ifdef SIC_IWR2 *iwr2 = bfin_read_SIC_IWR2(); # endif #endif bfin_iwr_restore(niwr0, niwr1, niwr2); }

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#endif
static inline void _bfin_write_pll_relock(u32 addr, unsigned int val) { unsigned long flags, iwr0, iwr1, iwr2; if (val == bfin_read_PLL_CTL()) return; flags = hard_local_irq_save(); /* Enable the PLL Wakeup bit in SIC IWR */ bfin_iwr_save(IWR_ENABLE(0), 0, 0, &iwr0, &iwr1, &iwr2); bfin_write16(addr, val); SSYNC(); asm("IDLE;"); bfin_iwr_restore(iwr0, iwr1, iwr2); hard_local_irq_restore(flags); }

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/* Writing to PLL_CTL initiates a PLL relock sequence */
static inline void bfin_write_PLL_CTL(unsigned int val) { _bfin_write_pll_relock(PLL_CTL, val); }

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/* Writing to VR_CTL initiates a PLL relock sequence */
static inline void bfin_write_VR_CTL(unsigned int val) { _bfin_write_pll_relock(VR_CTL, val); }

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#endif #endif

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