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Data Structures
struct	iicoc_softc

Macros
#define	OC_I2C_PRESCALE_LO_REG 0x00

#define	OC_I2C_PRESCALE_HI_REG 0x01

#define	OC_I2C_CTRL_REG 0x02

#define	OC_I2C_TRANSMIT_REG 0x03 /* tx and rx - same reg */

#define	OC_I2C_RECV_REG 0x03 /* tx and rx - same reg */

#define	OC_I2C_DATA_REG 0x03 /* tx and rx - same reg */

#define	OC_I2C_CMD_REG 0x04 /* cmd and status - same reg */

#define	OC_I2C_STATUS_REG 0x04 /* cmd and status - same reg */

#define	XLP_I2C_CLKFREQ 133333333 /* XLP 133 MHz IO clock */

#define	XLP_I2C_FREQ 100000 /* default 100kHz */

#define	I2C_TIMEOUT 500000

#define	OC_PRESCALER_LO 0

#define	OC_PRESCALER_HI 1

#define	OC_CONTROL 2

#define	OC_CONTROL_EN 0x80

#define	OC_CONTROL_IEN 0x40

#define	OC_DATA 3 /* Data TX & RX Reg */

#define	OC_COMMAND 4

#define	OC_COMMAND_START 0x90

#define	OC_COMMAND_STOP 0x40

#define	OC_COMMAND_READ 0x20

#define	OC_COMMAND_WRITE 0x10

#define	OC_COMMAND_RDACK 0x20

#define	OC_COMMAND_RDNACK 0x28

#define	OC_COMMAND_IACK 0x01 /* Not used */

#define	OC_STATUS 4 /* Same as 'command' */

#define	OC_STATUS_NACK 0x80 /* Did not get an ACK */

#define	OC_STATUS_BUSY 0x40

#define	OC_STATUS_AL 0x20 /* Arbitration Lost */

#define	OC_STATUS_TIP 0x02 /* Transfer in Progress */

#define	OC_STATUS_IF 0x01 /* Intr. Pending Flag */

Functions
int	iicoc_iicbus_start (device_t dev, u_char slave, int timeout)

int	iicoc_iicbus_stop (device_t dev)

int	iicoc_iicbus_read (device_t dev, char buf, int len, int read, int last, int delay)

int	iicoc_iicbus_write (device_t dev, const char buf, int len, int sent, int timeout)

int	iicoc_iicbus_repeated_start (device_t dev, u_char slave, int timeout)

int	iicoc_iicbus_reset (device_t dev, u_char speed, u_char addr, u_char *oldadr)

int	iicoc_init (device_t dev)

Variables
devclass_t	iicoc_devclass

Macro Definition Documentation

◆ I2C_TIMEOUT

#define I2C_TIMEOUT 500000

Definition at line 48 of file iicoc.h.

◆ OC_COMMAND

#define OC_COMMAND 4

Definition at line 64 of file iicoc.h.

◆ OC_COMMAND_IACK

#define OC_COMMAND_IACK 0x01 /* Not used */

Definition at line 71 of file iicoc.h.

◆ OC_COMMAND_RDACK

#define OC_COMMAND_RDACK 0x20

Definition at line 69 of file iicoc.h.

◆ OC_COMMAND_RDNACK

#define OC_COMMAND_RDNACK 0x28

Definition at line 70 of file iicoc.h.

◆ OC_COMMAND_READ

#define OC_COMMAND_READ 0x20

Definition at line 67 of file iicoc.h.

◆ OC_COMMAND_START

#define OC_COMMAND_START 0x90

Definition at line 65 of file iicoc.h.

◆ OC_COMMAND_STOP

#define OC_COMMAND_STOP 0x40

Definition at line 66 of file iicoc.h.

◆ OC_COMMAND_WRITE

#define OC_COMMAND_WRITE 0x10

Definition at line 68 of file iicoc.h.

◆ OC_CONTROL

#define OC_CONTROL 2

Definition at line 58 of file iicoc.h.

◆ OC_CONTROL_EN

#define OC_CONTROL_EN 0x80

Definition at line 59 of file iicoc.h.

◆ OC_CONTROL_IEN

#define OC_CONTROL_IEN 0x40

Definition at line 60 of file iicoc.h.

◆ OC_DATA

#define OC_DATA 3 /* Data TX & RX Reg */

Definition at line 62 of file iicoc.h.

◆ OC_I2C_CMD_REG

#define OC_I2C_CMD_REG 0x04 /* cmd and status - same reg */

Definition at line 43 of file iicoc.h.

◆ OC_I2C_CTRL_REG

#define OC_I2C_CTRL_REG 0x02

Definition at line 39 of file iicoc.h.

◆ OC_I2C_DATA_REG

#define OC_I2C_DATA_REG 0x03 /* tx and rx - same reg */

Definition at line 42 of file iicoc.h.

◆ OC_I2C_PRESCALE_HI_REG

#define OC_I2C_PRESCALE_HI_REG 0x01

Definition at line 38 of file iicoc.h.

◆ OC_I2C_PRESCALE_LO_REG

#define OC_I2C_PRESCALE_LO_REG 0x00

Definition at line 37 of file iicoc.h.

◆ OC_I2C_RECV_REG

#define OC_I2C_RECV_REG 0x03 /* tx and rx - same reg */

Definition at line 41 of file iicoc.h.

◆ OC_I2C_STATUS_REG

#define OC_I2C_STATUS_REG 0x04 /* cmd and status - same reg */

Definition at line 44 of file iicoc.h.

◆ OC_I2C_TRANSMIT_REG

#define OC_I2C_TRANSMIT_REG 0x03 /* tx and rx - same reg */

Definition at line 40 of file iicoc.h.

◆ OC_PRESCALER_HI

#define OC_PRESCALER_HI 1

Definition at line 56 of file iicoc.h.

◆ OC_PRESCALER_LO

#define OC_PRESCALER_LO 0

Definition at line 55 of file iicoc.h.

◆ OC_STATUS

#define OC_STATUS 4 /* Same as 'command' */

Definition at line 73 of file iicoc.h.

◆ OC_STATUS_AL

#define OC_STATUS_AL 0x20 /* Arbitration Lost */

Definition at line 76 of file iicoc.h.

◆ OC_STATUS_BUSY

#define OC_STATUS_BUSY 0x40

Definition at line 75 of file iicoc.h.

◆ OC_STATUS_IF

#define OC_STATUS_IF 0x01 /* Intr. Pending Flag */

Definition at line 78 of file iicoc.h.

◆ OC_STATUS_NACK

#define OC_STATUS_NACK 0x80 /* Did not get an ACK */

Definition at line 74 of file iicoc.h.

◆ OC_STATUS_TIP

#define OC_STATUS_TIP 0x02 /* Transfer in Progress */

Definition at line 77 of file iicoc.h.

◆ XLP_I2C_CLKFREQ

#define XLP_I2C_CLKFREQ 133333333 /* XLP 133 MHz IO clock */

Definition at line 46 of file iicoc.h.

◆ XLP_I2C_FREQ

#define XLP_I2C_FREQ 100000 /* default 100kHz */

Definition at line 47 of file iicoc.h.

Function Documentation

◆ iicoc_iicbus_read()

int iicoc_iicbus_read	(	device_t	dev,
		char *	buf,
		int	len,
		int *	read,
		int	last,
		int	delay
	)

Definition at line 248 of file iicoc.c.

References buf, data, dev, IIC_EBUSERR, IIC_NOERR, iicoc_rd_cmd(), len, OC_COMMAND_RDNACK, OC_COMMAND_READ, and read.

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◆ iicoc_iicbus_repeated_start()

int iicoc_iicbus_repeated_start	(	device_t	dev,
		u_char	slave,
		int	timeout
	)

Definition at line 197 of file iicoc.c.

References dev, iicoc_iicbus_start_common(), slave, and timeout.

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◆ iicoc_iicbus_reset()

int iicoc_iicbus_reset	(	device_t	dev,
		u_char	speed,
		u_char	addr,
		u_char *	oldadr
	)

Definition at line 274 of file iicoc.c.

References dev, iicoc_init(), and iicoc_softc::sc_mtx.

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◆ iicoc_iicbus_start()

int iicoc_iicbus_start	(	device_t	dev,
		u_char	slave,
		int	timeout
	)

Definition at line 190 of file iicoc.c.

References dev, iicoc_iicbus_start_common(), slave, and timeout.

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◆ iicoc_iicbus_stop()

int iicoc_iicbus_stop ( device_t dev )

Definition at line 204 of file iicoc.c.

References dev, iicoc_dev_write(), iicoc_wait_on_status(), OC_COMMAND_STOP, OC_I2C_CMD_REG, OC_STATUS_BUSY, and iicoc_softc::sc_mtx.

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◆ iicoc_iicbus_write()

int iicoc_iicbus_write	(	device_t	dev,
		const char *	buf,
		int	len,
		int *	sent,
		int	timeout
	)

Definition at line 218 of file iicoc.c.

References buf, dev, IIC_EBUSERR, IIC_NOERR, iicoc_wr_ack_cmd(), iicoc_wr_cmd(), len, and OC_COMMAND_WRITE.

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◆ iicoc_init()

int iicoc_init ( device_t dev )

Definition at line 130 of file iicoc.c.

References iicoc_softc::clockfreq, dev, iicoc_softc::i2cfreq, iicoc_dev_read(), iicoc_dev_write(), OC_CONTROL_EN, OC_CONTROL_IEN, OC_I2C_CTRL_REG, OC_I2C_PRESCALE_HI_REG, and OC_I2C_PRESCALE_LO_REG.

Referenced by iicoc_attach(), and iicoc_iicbus_reset().

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Variable Documentation

◆ iicoc_devclass

devclass_t iicoc_devclass

extern

Definition at line 51 of file iicoc.c.

Data Structures

Macros

Functions

Variables

Macro Definition Documentation

◆ I2C_TIMEOUT

◆ OC_COMMAND

◆ OC_COMMAND_IACK

◆ OC_COMMAND_RDACK

◆ OC_COMMAND_RDNACK

◆ OC_COMMAND_READ

◆ OC_COMMAND_START

◆ OC_COMMAND_STOP

◆ OC_COMMAND_WRITE

◆ OC_CONTROL

◆ OC_CONTROL_EN

◆ OC_CONTROL_IEN

◆ OC_DATA

◆ OC_I2C_CMD_REG

◆ OC_I2C_CTRL_REG

◆ OC_I2C_DATA_REG

◆ OC_I2C_PRESCALE_HI_REG

◆ OC_I2C_PRESCALE_LO_REG

◆ OC_I2C_RECV_REG

◆ OC_I2C_STATUS_REG

◆ OC_I2C_TRANSMIT_REG

◆ OC_PRESCALER_HI

◆ OC_PRESCALER_LO

◆ OC_STATUS

◆ OC_STATUS_AL

◆ OC_STATUS_BUSY

◆ OC_STATUS_IF

◆ OC_STATUS_NACK

◆ OC_STATUS_TIP

◆ XLP_I2C_CLKFREQ

◆ XLP_I2C_FREQ

Function Documentation

◆ iicoc_iicbus_read()

◆ iicoc_iicbus_repeated_start()

◆ iicoc_iicbus_reset()

◆ iicoc_iicbus_start()

◆ iicoc_iicbus_stop()

◆ iicoc_iicbus_write()

◆ iicoc_init()

Variable Documentation

◆ iicoc_devclass