Release 4.11 arch/blackfin/include/asm/bfin_twi.h
/*
* bfin_twi.h - interface to Blackfin TWIs
*
* Copyright 2005-2010 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#ifndef __ASM_BFIN_TWI_H__
#define __ASM_BFIN_TWI_H__
#include <asm/blackfin.h>
#define DEFINE_TWI_REG(reg_name, reg) \
static inline u16 read_##reg_name(struct bfin_twi_iface *iface) \
{ return bfin_read16(&iface->regs_base->reg); } \
static inline void write_##reg_name(struct bfin_twi_iface *iface, u16 v) \
{ bfin_write16(&iface->regs_base->reg, v); }
DEFINE_TWI_REG(CLKDIV, clkdiv)
DEFINE_TWI_REG(SLAVE_CTL, slave_ctl)
DEFINE_TWI_REG(SLAVE_STAT, slave_stat)
DEFINE_TWI_REG(SLAVE_ADDR, slave_addr)
DEFINE_TWI_REG(MASTER_CTL, master_ctl)
DEFINE_TWI_REG(MASTER_STAT, master_stat)
DEFINE_TWI_REG(MASTER_ADDR, master_addr)
DEFINE_TWI_REG(INT_STAT, int_stat)
DEFINE_TWI_REG(INT_MASK, int_mask)
DEFINE_TWI_REG(FIFO_STAT, fifo_stat)
DEFINE_TWI_REG(XMT_DATA8, xmt_data8)
DEFINE_TWI_REG(XMT_DATA16, xmt_data16)
#if !ANOMALY_16000030
DEFINE_TWI_REG(RCV_DATA8, rcv_data8)
DEFINE_TWI_REG(RCV_DATA16, rcv_data16)
#else
static inline u16 read_RCV_DATA8(struct bfin_twi_iface *iface)
{
u16 ret;
unsigned long flags;
flags = hard_local_irq_save();
ret = bfin_read16(&iface->regs_base->rcv_data8);
hard_local_irq_restore(flags);
return ret;
}
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static inline u16 read_RCV_DATA16(struct bfin_twi_iface *iface)
{
u16 ret;
unsigned long flags;
flags = hard_local_irq_save();
ret = bfin_read16(&iface->regs_base->rcv_data16);
hard_local_irq_restore(flags);
return ret;
}
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#endif
static inline u16 read_FIFO_CTL(struct bfin_twi_iface *iface)
{
return bfin_read16(&iface->regs_base->fifo_ctl);
}
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static inline void write_FIFO_CTL(struct bfin_twi_iface *iface, u16 v)
{
bfin_write16(&iface->regs_base->fifo_ctl, v);
SSYNC();
}
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static inline u16 read_CONTROL(struct bfin_twi_iface *iface)
{
return bfin_read16(&iface->regs_base->control);
}
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static inline void write_CONTROL(struct bfin_twi_iface *iface, u16 v)
{
SSYNC();
bfin_write16(&iface->regs_base->control, v);
}
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#endif
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