iic.c File Reference

#include <sys/param.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/fcntl.h>
#include <sys/lock.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/sx.h>
#include <sys/systm.h>
#include <sys/uio.h>
#include <sys/errno.h>
#include <dev/iicbus/iiconf.h>
#include <dev/iicbus/iicbus.h>
#include <dev/iicbus/iic.h>
#include "iicbus_if.h"

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Data Structures
struct	iic_softc
struct	iic_cdevpriv

Macros
#define	IIC_LOCK(cdp)   sx_xlock(&(cdp)->lock)
#define	IIC_UNLOCK(cdp)   sx_xunlock(&(cdp)->lock)

Functions
static	MALLOC_DEFINE (M_IIC, "iic", "I2C device data")
static int	iic_probe (device_t)
static int	iic_attach (device_t)
static int	iic_detach (device_t)
static void	iic_identify (driver_t *driver, device_t parent)
static void	iicdtor (void *data)
static int	iicuio_move (struct iic_cdevpriv *priv, struct uio *uio, int last)
static int	iicuio (struct cdev *dev, struct uio *uio, int ioflag)
static int	iicrdwr (struct iic_cdevpriv *priv, struct iic_rdwr_data *d, int flags)
static int	iicopen (struct cdev *dev, int flags, int fmt, struct thread *td)
static int	iicioctl (struct cdev *dev, u_long cmd, caddr_t data, int flags, struct thread *td)
	DRIVER_MODULE (iic, iicbus, iic_driver, iic_devclass, 0, 0)
	MODULE_DEPEND (iic, iicbus, IICBUS_MINVER, IICBUS_PREFVER, IICBUS_MAXVER)
	MODULE_VERSION (iic, 1)

Variables
static devclass_t	iic_devclass
static device_method_t	iic_methods []
static driver_t	iic_driver
static d_open_t	iicopen
static d_ioctl_t	iicioctl
static struct cdevsw	iic_cdevsw

Macro Definition Documentation

IIC_LOCK

#define IIC_LOCK

(

cdp

)

sx_xlock(&(cdp)->lock)

Definition at line 63 of file iic.c.

IIC_UNLOCK

#define IIC_UNLOCK

(

cdp

)

sx_xunlock(&(cdp)->lock)

Definition at line 64 of file iic.c.

Function Documentation

DRIVER_MODULE()

DRIVER_MODULE	(	iic	,
		iicbus	,
		iic_driver	,
		iic_devclass	,
		0	,
		0
	)

iic_attach()

static int iic_attach ( device_t  dev )

static

Definition at line 130 of file iic.c.

References dev, iic_cdevsw, iic_softc::sc_dev, and iic_softc::sc_devnode.

iic_detach()

static int iic_detach ( device_t  dev )

static

Definition at line 149 of file iic.c.

References dev, and iic_softc::sc_devnode.

iic_identify()

static void iic_identify ( driver_t *  driver, device_t  parent  )

static

Definition at line 111 of file iic.c.

iic_probe()

static int iic_probe ( device_t  dev )

static

Definition at line 119 of file iic.c.

References dev.

iicdtor()

static void iicdtor ( void *  data )

static

Definition at line 180 of file iic.c.

References data, IIC_UNKNOWN, iicbus_release_bus(), iicbus_reset, iicbus_stop(), iic_cdevpriv::lock, iic_cdevpriv::sc, iic_softc::sc_dev, and iic_cdevpriv::started.

Referenced by iicopen().

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iicioctl()

static int iicioctl ( struct cdev *  dev, u_long  cmd, caddr_t  data, int  flags, struct thread *  td  )

static

Definition at line 360 of file iic.c.

References iic_cdevpriv::addr, iiccmd::buf, iiccmd::count, data, I2CRDWR, I2CREAD, I2CRPTSTART, I2CRSTCARD, I2CSADDR, I2CSTART, I2CSTOP, I2CWRITE, IIC_DONTWAIT, IIC_ENOADDR, IIC_INTR, IIC_LOCK, IIC_UNKNOWN, IIC_UNLOCK, IIC_WAIT, iicbus_release_bus(), iicbus_repeated_start(), iicbus_request_bus(), iicbus_reset, iicbus_start(), iicbus_stop(), iicrdwr(), iicuio_move(), iiccmd::last, iic_cdevpriv::sc, iic_softc::sc_dev, iiccmd::slave, and iic_cdevpriv::started.

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iicopen()

static int iicopen ( struct cdev *  dev, int  flags, int  fmt, struct thread *  td  )

static

Definition at line 162 of file iic.c.

References dev, iicdtor(), iic_cdevpriv::lock, and iic_cdevpriv::sc.

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iicrdwr()

static int iicrdwr ( struct iic_cdevpriv *  priv, struct iic_rdwr_data *  d, int  flags  )

static

Definition at line 293 of file iic.c.

References iic_msg::buf, buf, iic_msg::flags, IIC_DONTWAIT, IIC_INTR, IIC_M_RD, IIC_RDRW_MAX_MSGS, IIC_WAIT, iicbus_release_bus(), iicbus_request_bus(), iicbus_transfer(), iic_msg::len, iic_rdwr_data::msgs, iic_rdwr_data::nmsgs, iic_cdevpriv::sc, and iic_softc::sc_dev.

Referenced by iicioctl().

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iicuio()

static int iicuio ( struct cdev *  dev, struct uio *  uio, int  ioflag  )

static

Definition at line 243 of file iic.c.

References iic_cdevpriv::addr, addr, IIC_DONTWAIT, IIC_INTR, IIC_LAST_READ, IIC_LOCK, IIC_UNLOCK, IIC_WAIT, iicbus_release_bus(), iicbus_request_bus(), iicbus_start(), iicbus_stop(), iicuio_move(), LSB, iic_cdevpriv::sc, iic_softc::sc_dev, and iic_cdevpriv::started.

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iicuio_move()

static int iicuio_move ( struct iic_cdevpriv *  priv, struct uio *  uio, int  last  )

static

Definition at line 202 of file iic.c.

References iicbus_read(), iicbus_write(), last, iic_cdevpriv::sc, and iic_softc::sc_dev.

Referenced by iicioctl(), and iicuio().

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MALLOC_DEFINE()

static MALLOC_DEFINE ( M_IIC  , "iic"  , "I2C device data"    )

static

MODULE_DEPEND()

MODULE_DEPEND	(	iic	,
		iicbus	,
		IICBUS_MINVER	,
		IICBUS_PREFVER	,
		IICBUS_MAXVER
	)

MODULE_VERSION()

MODULE_VERSION	(	iic	,
		1
	)

Variable Documentation

iic_cdevsw

struct cdevsw iic_cdevsw

static

Initial value:

= {
        .d_version =    D_VERSION,
        .d_open =       iicopen,
        .d_read =       iicuio,
        .d_write =      iicuio,
        .d_ioctl =      iicioctl,
        .d_name =       "iic",
}

Definition at line 101 of file iic.c.

Referenced by iic_attach().

iic_devclass

devclass_t iic_devclass

static

Definition at line 77 of file iic.c.

iic_driver

driver_t iic_driver

static

Initial value:

= {
        "iic",
        iic_methods,
        sizeof(struct iic_softc),
}

Definition at line 92 of file iic.c.

iic_methods

device_method_t iic_methods[]

static

Initial value:

= {
        
        DEVMETHOD(device_identify,      iic_identify),
        DEVMETHOD(device_probe,         iic_probe),
        DEVMETHOD(device_attach,        iic_attach),
        DEVMETHOD(device_detach,        iic_detach),
 
        
        DEVMETHOD(iicbus_intr,          iicbus_generic_intr),
 
        { 0, 0 }
}

Definition at line 79 of file iic.c.

iicioctl

d_ioctl_t iicioctl

static

Definition at line 99 of file iic.c.

iicopen

d_open_t iicopen

static

Definition at line 98 of file iic.c.