52 	struct i2c_adapter adap;  member
73 static int uniphier_i2c_xfer_byte(struct i2c_adapter *adap, u32 txdata,  in uniphier_i2c_xfer_byte()  argument
76 	struct uniphier_i2c_priv *priv = i2c_get_adapdata(adap);  in uniphier_i2c_xfer_byte()
83 	dev_dbg(&adap->dev, "write data: 0x%04x\n", txdata);  in uniphier_i2c_xfer_byte()
86 	time_left = wait_for_completion_timeout(&priv->comp, adap->timeout);  in uniphier_i2c_xfer_byte()
88 		dev_err(&adap->dev, "transaction timeout\n");  in uniphier_i2c_xfer_byte()
93 	dev_dbg(&adap->dev, "read data: 0x%04x\n", rxdata);  in uniphier_i2c_xfer_byte()
101 static int uniphier_i2c_send_byte(struct i2c_adapter *adap, u32 txdata)  in uniphier_i2c_send_byte()  argument
106 	ret = uniphier_i2c_xfer_byte(adap, txdata, &rxdata);  in uniphier_i2c_send_byte()
111 		dev_dbg(&adap->dev, "arbitration lost\n");  in uniphier_i2c_send_byte()
115 		dev_dbg(&adap->dev, "could not get ACK\n");  in uniphier_i2c_send_byte()
122 static int uniphier_i2c_tx(struct i2c_adapter *adap, u16 addr, u16 len,  in uniphier_i2c_tx()  argument
127 	dev_dbg(&adap->dev, "start condition\n");  in uniphier_i2c_tx()
128 	ret = uniphier_i2c_send_byte(adap, addr << 1 |  in uniphier_i2c_tx()
135 		ret = uniphier_i2c_send_byte(adap,  in uniphier_i2c_tx()
144 static int uniphier_i2c_rx(struct i2c_adapter *adap, u16 addr, u16 len,  in uniphier_i2c_rx()  argument
149 	dev_dbg(&adap->dev, "start condition\n");  in uniphier_i2c_rx()
150 	ret = uniphier_i2c_send_byte(adap, addr << 1 |  in uniphier_i2c_rx()
160 		ret = uniphier_i2c_xfer_byte(adap,  in uniphier_i2c_rx()
171 static int uniphier_i2c_stop(struct i2c_adapter *adap)  in uniphier_i2c_stop()  argument
173 	dev_dbg(&adap->dev, "stop condition\n");  in uniphier_i2c_stop()
174 	return uniphier_i2c_send_byte(adap, UNIPHIER_I2C_DTRM_STO |  in uniphier_i2c_stop()
178 static int uniphier_i2c_master_xfer_one(struct i2c_adapter *adap,  in uniphier_i2c_master_xfer_one()  argument
185 	dev_dbg(&adap->dev, "%s: addr=0x%02x, len=%d, stop=%d\n",  in uniphier_i2c_master_xfer_one()
189 		ret = uniphier_i2c_rx(adap, msg->addr, msg->len, msg->buf);  in uniphier_i2c_master_xfer_one()
191 		ret = uniphier_i2c_tx(adap, msg->addr, msg->len, msg->buf);  in uniphier_i2c_master_xfer_one()
203 		int ret2 = uniphier_i2c_stop(adap);  in uniphier_i2c_master_xfer_one()
213 		i2c_recover_bus(adap);  in uniphier_i2c_master_xfer_one()
218 static int uniphier_i2c_check_bus_busy(struct i2c_adapter *adap)  in uniphier_i2c_check_bus_busy()  argument
220 	struct uniphier_i2c_priv *priv = i2c_get_adapdata(adap);  in uniphier_i2c_check_bus_busy()
229 			i2c_recover_bus(adap);  in uniphier_i2c_check_bus_busy()
240 static int uniphier_i2c_master_xfer(struct i2c_adapter *adap,  in uniphier_i2c_master_xfer()  argument
246 	ret = uniphier_i2c_check_bus_busy(adap);  in uniphier_i2c_master_xfer()
254 		ret = uniphier_i2c_master_xfer_one(adap, msg, stop);  in uniphier_i2c_master_xfer()
262 static u32 uniphier_i2c_functionality(struct i2c_adapter *adap)  in uniphier_i2c_functionality()  argument
280 static int uniphier_i2c_get_scl(struct i2c_adapter *adap)  in uniphier_i2c_get_scl()  argument
282 	struct uniphier_i2c_priv *priv = i2c_get_adapdata(adap);  in uniphier_i2c_get_scl()
288 static void uniphier_i2c_set_scl(struct i2c_adapter *adap, int val)  in uniphier_i2c_set_scl()  argument
290 	struct uniphier_i2c_priv *priv = i2c_get_adapdata(adap);  in uniphier_i2c_set_scl()
296 static int uniphier_i2c_get_sda(struct i2c_adapter *adap)  in uniphier_i2c_get_sda()  argument
298 	struct uniphier_i2c_priv *priv = i2c_get_adapdata(adap);  in uniphier_i2c_get_sda()
304 static void uniphier_i2c_unprepare_recovery(struct i2c_adapter *adap)  in uniphier_i2c_unprepare_recovery()  argument
306 	uniphier_i2c_reset(i2c_get_adapdata(adap), false);  in uniphier_i2c_unprepare_recovery()
385 	priv->adap.owner = THIS_MODULE;  in uniphier_i2c_probe()
386 	priv->adap.algo = &uniphier_i2c_algo;  in uniphier_i2c_probe()
387 	priv->adap.dev.parent = dev;  in uniphier_i2c_probe()
388 	priv->adap.dev.of_node = dev->of_node;  in uniphier_i2c_probe()
389 	strlcpy(priv->adap.name, "UniPhier I2C", sizeof(priv->adap.name));  in uniphier_i2c_probe()
390 	priv->adap.bus_recovery_info = &uniphier_i2c_bus_recovery_info;  in uniphier_i2c_probe()
391 	i2c_set_adapdata(&priv->adap, priv);  in uniphier_i2c_probe()
403 	ret = i2c_add_adapter(&priv->adap);  in uniphier_i2c_probe()
415 	i2c_del_adapter(&priv->adap);  in uniphier_i2c_remove()