OCI2C_CONTROL
ctrl = oc_getreg(i2c, OCI2C_CONTROL);
oc_setreg(i2c, OCI2C_CONTROL, ctrl & ~OCI2C_CTRL_IEN);
oc_setreg(i2c, OCI2C_CONTROL, ctrl | OCI2C_CTRL_IEN);
u8 ctrl = oc_getreg(i2c, OCI2C_CONTROL);
oc_setreg(i2c, OCI2C_CONTROL, ctrl);
oc_setreg(i2c, OCI2C_CONTROL, ctrl | OCI2C_CTRL_EN);
u8 ctrl = oc_getreg(i2c, OCI2C_CONTROL);
oc_setreg(i2c, OCI2C_CONTROL, ctrl);
u8 ctrl = oc_getreg(i2c, OCI2C_CONTROL);
oc_setreg(i2c, OCI2C_CONTROL, ctrl);