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Commit a1cc5a57 authored by Wolfram Sang's avatar Wolfram Sang
Browse files

blackfin: merge the two TWI header files 



There seems to be no need for separate ones since all users include both
files anyhow. Merge them because include/linux/i2c is to be deprecated.

Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
parent cc209ac8

arch/blackfin/include/asm/bfin_twi.h

+133 −1
Original line number Diff line number Diff line 
/*

 * bfin_twi.h - interface to Blackfin TWIs

 *

 * Copyright 2005-2010 Analog Devices Inc.

 * Copyright 2005-2014 Analog Devices Inc.

 *

 * Licensed under the GPL-2 or later.

 */
@@ -10,6 +10,138 @@ 
#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) \

arch/blackfin/kernel/debug-mmrs.c

+0 −1
Original line number Diff line number Diff line
@@ -10,7 +10,6 @@ 
#include <linux/fs.h>

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/i2c/bfin_twi.h>

#include <linux/gpio.h>



#include <asm/blackfin.h>

drivers/i2c/busses/i2c-bfin-twi.c

+0 −1
Original line number Diff line number Diff line
@@ -21,7 +21,6 @@ 
#include <linux/interrupt.h>

#include <linux/platform_device.h>

#include <linux/delay.h>

#include <linux/i2c/bfin_twi.h>



#include <asm/irq.h>

#include <asm/portmux.h>

include/linux/i2c/bfin_twi.h

deleted100644 → 0
+0 −145
Original line number Diff line number Diff line 
/*

 * i2c-bfin-twi.h - interface to ADI TWI controller

 *

 * Copyright 2005-2014 Analog Devices Inc.

 *

 * Licensed under the GPL-2 or later.

 */



#ifndef __I2C_BFIN_TWI_H__

#define __I2C_BFIN_TWI_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)   */



#endif