123 static int pca954x_reg_write(struct i2c_adapter *adap,  in pca954x_reg_write()  argument
128 	if (adap->algo->master_xfer) {  in pca954x_reg_write()
137 		ret = __i2c_transfer(adap, &msg, 1);  in pca954x_reg_write()
140 		ret = adap->algo->smbus_xfer(adap, client->addr,  in pca954x_reg_write()
149 static int pca954x_select_chan(struct i2c_adapter *adap,  in pca954x_select_chan()  argument
165 		ret = pca954x_reg_write(adap, client, regval);  in pca954x_select_chan()
172 static int pca954x_deselect_mux(struct i2c_adapter *adap,  in pca954x_deselect_mux()  argument
179 	return pca954x_reg_write(adap, client, data->last_chan);  in pca954x_deselect_mux()
188 	struct i2c_adapter *adap = to_i2c_adapter(client->dev.parent);  in pca954x_probe()  local
197 	if (!i2c_check_functionality(adap, I2C_FUNC_SMBUS_BYTE))  in pca954x_probe()
244 			i2c_add_mux_adapter(adap, &client->dev, client,  in pca954x_probe()