summaryrefslogtreecommitdiff
path: root/arch/blackfin/include/asm/bfin_twi.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/blackfin/include/asm/bfin_twi.h')
-rw-r--r--arch/blackfin/include/asm/bfin_twi.h214
1 files changed, 0 insertions, 214 deletions
diff --git a/arch/blackfin/include/asm/bfin_twi.h b/arch/blackfin/include/asm/bfin_twi.h
deleted file mode 100644
index 211e9c78f6fb..000000000000
--- a/arch/blackfin/include/asm/bfin_twi.h
+++ /dev/null
@@ -1,214 +0,0 @@
-/*
- * bfin_twi.h - interface to Blackfin TWIs
- *
- * Copyright 2005-2014 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later.
- */
-
-#ifndef __ASM_BFIN_TWI_H__
-#define __ASM_BFIN_TWI_H__
-
-#include <asm/blackfin.h>
-#include <linux/types.h>
-#include <linux/i2c.h>
-
-/*
- * ADI twi registers layout
- */
-struct bfin_twi_regs {
- u16 clkdiv;
- u16 dummy1;
- u16 control;
- u16 dummy2;
- u16 slave_ctl;
- u16 dummy3;
- u16 slave_stat;
- u16 dummy4;
- u16 slave_addr;
- u16 dummy5;
- u16 master_ctl;
- u16 dummy6;
- u16 master_stat;
- u16 dummy7;
- u16 master_addr;
- u16 dummy8;
- u16 int_stat;
- u16 dummy9;
- u16 int_mask;
- u16 dummy10;
- u16 fifo_ctl;
- u16 dummy11;
- u16 fifo_stat;
- u16 dummy12;
- u32 __pad[20];
- u16 xmt_data8;
- u16 dummy13;
- u16 xmt_data16;
- u16 dummy14;
- u16 rcv_data8;
- u16 dummy15;
- u16 rcv_data16;
- u16 dummy16;
-};
-
-struct bfin_twi_iface {
- int irq;
- spinlock_t lock;
- char read_write;
- u8 command;
- u8 *transPtr;
- int readNum;
- int writeNum;
- int cur_mode;
- int manual_stop;
- int result;
- struct i2c_adapter adap;
- struct completion complete;
- struct i2c_msg *pmsg;
- int msg_num;
- int cur_msg;
- u16 saved_clkdiv;
- u16 saved_control;
- struct bfin_twi_regs __iomem *regs_base;
-};
-
-/* ******************** TWO-WIRE INTERFACE (TWI) MASKS ********************/
-/* TWI_CLKDIV Macros (Use: *pTWI_CLKDIV = CLKLOW(x)|CLKHI(y); ) */
-#define CLKLOW(x) ((x) & 0xFF) /* Periods Clock Is Held Low */
-#define CLKHI(y) (((y)&0xFF)<<0x8) /* Periods Before New Clock Low */
-
-/* TWI_PRESCALE Masks */
-#define PRESCALE 0x007F /* SCLKs Per Internal Time Reference (10MHz) */
-#define TWI_ENA 0x0080 /* TWI Enable */
-#define SCCB 0x0200 /* SCCB Compatibility Enable */
-
-/* TWI_SLAVE_CTL Masks */
-#define SEN 0x0001 /* Slave Enable */
-#define SADD_LEN 0x0002 /* Slave Address Length */
-#define STDVAL 0x0004 /* Slave Transmit Data Valid */
-#define NAK 0x0008 /* NAK Generated At Conclusion Of Transfer */
-#define GEN 0x0010 /* General Call Address Matching Enabled */
-
-/* TWI_SLAVE_STAT Masks */
-#define SDIR 0x0001 /* Slave Transfer Direction (RX/TX*) */
-#define GCALL 0x0002 /* General Call Indicator */
-
-/* TWI_MASTER_CTL Masks */
-#define MEN 0x0001 /* Master Mode Enable */
-#define MADD_LEN 0x0002 /* Master Address Length */
-#define MDIR 0x0004 /* Master Transmit Direction (RX/TX*) */
-#define FAST 0x0008 /* Use Fast Mode Timing Specs */
-#define STOP 0x0010 /* Issue Stop Condition */
-#define RSTART 0x0020 /* Repeat Start or Stop* At End Of Transfer */
-#define DCNT 0x3FC0 /* Data Bytes To Transfer */
-#define SDAOVR 0x4000 /* Serial Data Override */
-#define SCLOVR 0x8000 /* Serial Clock Override */
-
-/* TWI_MASTER_STAT Masks */
-#define MPROG 0x0001 /* Master Transfer In Progress */
-#define LOSTARB 0x0002 /* Lost Arbitration Indicator (Xfer Aborted) */
-#define ANAK 0x0004 /* Address Not Acknowledged */
-#define DNAK 0x0008 /* Data Not Acknowledged */
-#define BUFRDERR 0x0010 /* Buffer Read Error */
-#define BUFWRERR 0x0020 /* Buffer Write Error */
-#define SDASEN 0x0040 /* Serial Data Sense */
-#define SCLSEN 0x0080 /* Serial Clock Sense */
-#define BUSBUSY 0x0100 /* Bus Busy Indicator */
-
-/* TWI_INT_SRC and TWI_INT_ENABLE Masks */
-#define SINIT 0x0001 /* Slave Transfer Initiated */
-#define SCOMP 0x0002 /* Slave Transfer Complete */
-#define SERR 0x0004 /* Slave Transfer Error */
-#define SOVF 0x0008 /* Slave Overflow */
-#define MCOMP 0x0010 /* Master Transfer Complete */
-#define MERR 0x0020 /* Master Transfer Error */
-#define XMTSERV 0x0040 /* Transmit FIFO Service */
-#define RCVSERV 0x0080 /* Receive FIFO Service */
-
-/* TWI_FIFO_CTRL Masks */
-#define XMTFLUSH 0x0001 /* Transmit Buffer Flush */
-#define RCVFLUSH 0x0002 /* Receive Buffer Flush */
-#define XMTINTLEN 0x0004 /* Transmit Buffer Interrupt Length */
-#define RCVINTLEN 0x0008 /* Receive Buffer Interrupt Length */
-
-/* TWI_FIFO_STAT Masks */
-#define XMTSTAT 0x0003 /* Transmit FIFO Status */
-#define XMT_EMPTY 0x0000 /* Transmit FIFO Empty */
-#define XMT_HALF 0x0001 /* Transmit FIFO Has 1 Byte To Write */
-#define XMT_FULL 0x0003 /* Transmit FIFO Full (2 Bytes To Write) */
-
-#define RCVSTAT 0x000C /* Receive FIFO Status */
-#define RCV_EMPTY 0x0000 /* Receive FIFO Empty */
-#define RCV_HALF 0x0004 /* Receive FIFO Has 1 Byte To Read */
-#define RCV_FULL 0x000C /* Receive FIFO Full (2 Bytes To Read) */
-
-#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
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-21 17:39:51 +0300