diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
commit | 57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch) | |
tree | 5e910f0e82173f4ef4f51111366a3f1299037a7b /arch/blackfin/include/asm/bfin_twi.h |
Initial import
Diffstat (limited to 'arch/blackfin/include/asm/bfin_twi.h')
-rw-r--r-- | arch/blackfin/include/asm/bfin_twi.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/arch/blackfin/include/asm/bfin_twi.h b/arch/blackfin/include/asm/bfin_twi.h new file mode 100644 index 000000000..aaa0834d3 --- /dev/null +++ b/arch/blackfin/include/asm/bfin_twi.h @@ -0,0 +1,82 @@ +/* + * 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; +} + +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; +} +#endif + +static inline u16 read_FIFO_CTL(struct bfin_twi_iface *iface) +{ + return bfin_read16(&iface->regs_base->fifo_ctl); +} + +static inline void write_FIFO_CTL(struct bfin_twi_iface *iface, u16 v) +{ + bfin_write16(&iface->regs_base->fifo_ctl, v); + SSYNC(); +} + +static inline u16 read_CONTROL(struct bfin_twi_iface *iface) +{ + return bfin_read16(&iface->regs_base->control); +} + +static inline void write_CONTROL(struct bfin_twi_iface *iface, u16 v) +{ + SSYNC(); + bfin_write16(&iface->regs_base->control, v); +} +#endif |