/*
* write command and read single byte in transaction.
*/
int
ig4iic_smb_readb(device_t dev, u_char slave, char cmd, char *byte)
{
ig4iic_softc_t *sc = device_get_softc(dev);
int error;
mtx_lock(&sc->mtx);
set_slave_addr(sc, slave, 0);
error = smb_transaction(sc, cmd, SMB_TRANS_NOCNT,
NULL, 0, byte, 1, NULL);
mtx_unlock(&sc->mtx);
return error;
}
int
ig4iic_smb_bwrite(device_t dev, u_char slave, char cmd,
u_char wcount, char *buf)
{
ig4iic_softc_t *sc = device_get_softc(dev);
int error;
mtx_lock(&sc->mtx);
set_slave_addr(sc, slave, 0);
error = smb_transaction(sc, cmd, 0,
buf, wcount, NULL, 0, NULL);
mtx_unlock(&sc->mtx);
return error;
}
/*
* Write command and single byte in transaction.
*/
int
ig4iic_smb_writeb(device_t dev, u_char slave, char cmd, char byte)
{
ig4iic_softc_t *sc = device_get_softc(dev);
int error;
sx_xlock(&sc->call_lock);
mtx_lock(&sc->io_lock);
set_slave_addr(sc, slave, 0);
error = smb_transaction(sc, cmd, SMB_TRANS_NOCNT,
&byte, 1, NULL, 0, NULL);
mtx_unlock(&sc->io_lock);
sx_xunlock(&sc->call_lock);
return (error);
}
int
ig4iic_smb_trans(device_t dev, u_char slave, char cmd, int op,
char *wbuf, int wcount, char *rbuf, int rcount,
int *actualp)
{
ig4iic_softc_t *sc = device_get_softc(dev);
int error;
mtx_lock(&sc->mtx);
set_slave_addr(sc, slave, op);
error = smb_transaction(sc, cmd, op,
wbuf, wcount, rbuf, rcount, actualp);
mtx_unlock(&sc->mtx);
return error;
}
int
ig4iic_smb_bread(device_t dev, u_char slave, char cmd,
u_char *countp_char, char *buf)
{
ig4iic_softc_t *sc = device_get_softc(dev);
int rcount = *countp_char;
int error;
mtx_lock(&sc->mtx);
set_slave_addr(sc, slave, 0);
error = smb_transaction(sc, cmd, 0,
NULL, 0, buf, rcount, &rcount);
*countp_char = rcount;
mtx_unlock(&sc->mtx);
return error;
}
/*
* write command and read word in transaction.
*/
int
ig4iic_smb_readw(device_t dev, u_char slave, char cmd, short *word)
{
ig4iic_softc_t *sc = device_get_softc(dev);
char buf[2];
int error;
mtx_lock(&sc->mtx);
set_slave_addr(sc, slave, 0);
if ((error = smb_transaction(sc, cmd, SMB_TRANS_NOCNT,
NULL, 0, buf, 2, NULL)) == 0) {
*word = (u_char)buf[0] | ((u_char)buf[1] << 8);
}
mtx_unlock(&sc->mtx);
return error;
}
/*
* Write command and single word in transaction.
*/
int
ig4iic_smb_writew(device_t dev, u_char slave, char cmd, short word)
{
ig4iic_softc_t *sc = device_get_softc(dev);
char buf[2];
int error;
mtx_lock(&sc->mtx);
set_slave_addr(sc, slave, 0);
buf[0] = word & 0xFF;
buf[1] = word >> 8;
error = smb_transaction(sc, cmd, SMB_TRANS_NOCNT,
buf, 2, NULL, 0, NULL);
mtx_unlock(&sc->mtx);
return error;
}
/*
* write command and word and read word in transaction
*/
int
ig4iic_smb_pcall(device_t dev, u_char slave, char cmd,
short sdata, short *rdata)
{
ig4iic_softc_t *sc = device_get_softc(dev);
char rbuf[2];
char wbuf[2];
int error;
mtx_lock(&sc->mtx);
set_slave_addr(sc, slave, 0);
wbuf[0] = sdata & 0xFF;
wbuf[1] = sdata >> 8;
if ((error = smb_transaction(sc, cmd, SMB_TRANS_NOCNT,
wbuf, 2, rbuf, 2, NULL)) == 0) {
*rdata = (u_char)rbuf[0] | ((u_char)rbuf[1] << 8);
}
mtx_unlock(&sc->mtx);
return error;
}
