i2c/busses/i2c-rcar.c

34 #define ICSCR	0x00	/* slave ctrl */
36 #define ICSSR	0x08	/* slave status */
38 #define ICSIER	0x10	/* slave irq enable */
41 #define ICSAR	0x1C	/* slave address */
52 #define SDBS	BIT(3)	/* slave data buffer select */
53 #define SIE	BIT(2)	/* slave interface enable */
69 #define STM	BIT(5)	/* slave transmit mode */
71 #define SDE	BIT(3)	/* slave data empty */
72 #define SDT	BIT(2)	/* slave data transmitted */
73 #define SDR	BIT(1)	/* slave data received */
74 #define SAR	BIT(0)	/* slave addr received */
83 #define MAT	BIT(0)	/* slave addr xfer done */
157 	struct i2c_client *slave;
517 		dev_dbg(dev, "dma prep slave sg failed, using PIO\n");
662 			i2c_slave_event(priv->slave, I2C_SLAVE_READ_REQUESTED, &value);
666 			i2c_slave_event(priv->slave, I2C_SLAVE_WRITE_REQUESTED, &value);
677 		i2c_slave_event(priv->slave, I2C_SLAVE_STOP, &value);
688 		ret = i2c_slave_event(priv->slave, I2C_SLAVE_WRITE_RECEIVED, &value);
696 		i2c_slave_event(priv->slave, I2C_SLAVE_READ_PROCESSED, &value);
1006 static int rcar_reg_slave(struct i2c_client *slave)
1008 	struct rcar_i2c_priv *priv = i2c_get_adapdata(slave->adapter);
1010 	if (priv->slave)
1013 	if (slave->flags & I2C_CLIENT_TEN)
1016 	/* Keep device active for slave address detection logic */
1019 	priv->slave = slave;
1020 	rcar_i2c_write(priv, ICSAR, slave->addr);
1028 static int rcar_unreg_slave(struct i2c_client *slave)
1030 	struct rcar_i2c_priv *priv = i2c_get_adapdata(slave->adapter);
1032 	WARN_ON(!priv->slave);
1040 	rcar_i2c_write(priv, ICSAR, 0); /* Gen2: must be 0 if not using slave */
1042 	priv->slave = NULL;
1155 	rcar_i2c_write(priv, ICSAR, 0); /* Gen2: must be 0 if not using slave */