blackfin: bf60x: twi: work around temporary anomaly 0501001
Disable IRQ when reading MMR rcv_data8 and rcv_data16. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
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@ -83,8 +83,35 @@ DEFINE_TWI_REG(FIFO_CTL, fifo_ctl)
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DEFINE_TWI_REG(FIFO_STAT, fifo_stat)
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DEFINE_TWI_REG(XMT_DATA8, xmt_data8)
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DEFINE_TWI_REG(XMT_DATA16, xmt_data16)
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#if !ANOMALY_05001001
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DEFINE_TWI_REG(RCV_DATA8, rcv_data8)
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DEFINE_TWI_REG(RCV_DATA16, rcv_data16)
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#else
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static inline u16 read_RCV_DATA8(struct bfin_twi_iface *iface)
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{
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u16 ret;
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unsigned long flags;
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flags = hard_local_irq_save();
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ret = iface->regs_base->rcv_data8;
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hard_local_irq_restore(flags);
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return ret;
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}
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static inline u16 read_RCV_DATA16(struct bfin_twi_iface *iface)
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{
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u16 ret;
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unsigned long flags;
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flags = hard_local_irq_save();
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ret = iface->regs_base->rcv_data16;
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hard_local_irq_restore(flags);
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return ret;
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}
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#endif
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/* ******************** TWO-WIRE INTERFACE (TWI) MASKS ***********************/
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/* TWI_CLKDIV Macros (Use: *pTWI_CLKDIV = CLKLOW(x)|CLKHI(y); ) */
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