92 static int pca9541_reg_write(struct i2c_client *client, u8 command, u8 val)  in pca9541_reg_write()  argument
94 	struct i2c_adapter *adap = client->adapter;  in pca9541_reg_write()
101 		msg.addr = client->addr;  in pca9541_reg_write()
112 		ret = adap->algo->smbus_xfer(adap, client->addr,  in pca9541_reg_write()
113 					     client->flags,  in pca9541_reg_write()
126 static int pca9541_reg_read(struct i2c_client *client, u8 command)  in pca9541_reg_read()  argument
128 	struct i2c_adapter *adap = client->adapter;  in pca9541_reg_read()
135 				.addr = client->addr,  in pca9541_reg_read()
141 				.addr = client->addr,  in pca9541_reg_read()
155 		ret = adap->algo->smbus_xfer(adap, client->addr,  in pca9541_reg_read()
156 					     client->flags,  in pca9541_reg_read()
171 static void pca9541_release_bus(struct i2c_client *client)  in pca9541_release_bus()  argument
175 	reg = pca9541_reg_read(client, PCA9541_CONTROL);  in pca9541_release_bus()
177 		pca9541_reg_write(client, PCA9541_CONTROL,  in pca9541_release_bus()
218 static int pca9541_arbitrate(struct i2c_client *client)  in pca9541_arbitrate()  argument
220 	struct pca9541 *data = i2c_get_clientdata(client);  in pca9541_arbitrate()
223 	reg = pca9541_reg_read(client, PCA9541_CONTROL);  in pca9541_arbitrate()
233 		istat = pca9541_reg_read(client, PCA9541_ISTAT);  in pca9541_arbitrate()
240 			pca9541_reg_write(client,  in pca9541_arbitrate()
258 			pca9541_reg_write(client,  in pca9541_arbitrate()
272 			pca9541_reg_write(client,  in pca9541_arbitrate()
280 				pca9541_reg_write(client,  in pca9541_arbitrate()
288 static int pca9541_select_chan(struct i2c_adapter *adap, void *client, u32 chan)  in pca9541_select_chan()  argument
290 	struct pca9541 *data = i2c_get_clientdata(client);  in pca9541_select_chan()
299 		ret = pca9541_arbitrate(client);  in pca9541_select_chan()
313 				void *client, u32 chan)  in pca9541_release_chan()  argument
315 	pca9541_release_bus(client);  in pca9541_release_chan()
322 static int pca9541_probe(struct i2c_client *client,  in pca9541_probe()  argument
325 	struct i2c_adapter *adap = client->adapter;  in pca9541_probe()
326 	struct pca954x_platform_data *pdata = dev_get_platdata(&client->dev);  in pca9541_probe()
340 	i2c_set_clientdata(client, data);  in pca9541_probe()
347 	pca9541_release_bus(client);  in pca9541_probe()
355 	data->mux_adap = i2c_add_mux_adapter(adap, &client->dev, client,  in pca9541_probe()
361 		dev_err(&client->dev, "failed to register master selector\n");  in pca9541_probe()
365 	dev_info(&client->dev, "registered master selector for I2C %s\n",  in pca9541_probe()
366 		 client->name);  in pca9541_probe()
376 static int pca9541_remove(struct i2c_client *client)  in pca9541_remove()  argument
378 	struct pca9541 *data = i2c_get_clientdata(client);  in pca9541_remove()