89 	struct i2c_client	*client;  member
96 	int (*write)(struct i2c_client *client, unsigned data);
97 	int (*read)(struct i2c_client *client);
104 static int i2c_write_le8(struct i2c_client *client, unsigned data)  in i2c_write_le8()  argument
106 	return i2c_smbus_write_byte(client, data);  in i2c_write_le8()
109 static int i2c_read_le8(struct i2c_client *client)  in i2c_read_le8()  argument
111 	return (int)i2c_smbus_read_byte(client);  in i2c_read_le8()
116 static int i2c_write_le16(struct i2c_client *client, unsigned word)  in i2c_write_le16()  argument
121 	status = i2c_master_send(client, buf, 2);  in i2c_write_le16()
125 static int i2c_read_le16(struct i2c_client *client)  in i2c_read_le16()  argument
130 	status = i2c_master_recv(client, buf, 2);  in i2c_read_le16()
145 	status = gpio->write(gpio->client, gpio->out);  in pcf857x_input()
156 	value = gpio->read(gpio->client);  in pcf857x_get()
171 	status = gpio->write(gpio->client, gpio->out);  in pcf857x_output()
189 	status = gpio->read(gpio->client);  in pcf857x_irq()
220 			dev_dbg(&gpio->client->dev,  in pcf857x_irq_set_wake()
271 static int pcf857x_probe(struct i2c_client *client,  in pcf857x_probe()  argument
274 	struct pcf857x_platform_data	*pdata = dev_get_platdata(&client->dev);  in pcf857x_probe()
275 	struct device_node		*np = client->dev.of_node;  in pcf857x_probe()
285 		dev_dbg(&client->dev, "no platform data\n");  in pcf857x_probe()
288 	gpio = devm_kzalloc(&client->dev, sizeof(*gpio), GFP_KERNEL);  in pcf857x_probe()
296 	gpio->chip.dev			= &client->dev;  in pcf857x_probe()
319 		if (!i2c_check_functionality(client->adapter,  in pcf857x_probe()
325 			status = i2c_smbus_read_byte(client);  in pcf857x_probe()
337 		if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))  in pcf857x_probe()
342 			status = i2c_read_le16(client);  in pcf857x_probe()
345 		dev_dbg(&client->dev, "unsupported number of gpios\n");  in pcf857x_probe()
352 	gpio->chip.label = client->name;  in pcf857x_probe()
354 	gpio->client = client;  in pcf857x_probe()
355 	i2c_set_clientdata(client, gpio);  in pcf857x_probe()
380 	if (client->irq) {  in pcf857x_probe()
385 			dev_err(&client->dev, "cannot add irqchip\n");  in pcf857x_probe()
389 		status = devm_request_threaded_irq(&client->dev, client->irq,  in pcf857x_probe()
392 					dev_name(&client->dev), gpio);  in pcf857x_probe()
397 					     client->irq, NULL);  in pcf857x_probe()
398 		gpio->irq_parent = client->irq;  in pcf857x_probe()
405 		status = pdata->setup(client,  in pcf857x_probe()
409 			dev_warn(&client->dev, "setup --> %d\n", status);  in pcf857x_probe()
412 	dev_info(&client->dev, "probed\n");  in pcf857x_probe()
420 	dev_dbg(&client->dev, "probe error %d for '%s'\n", status,  in pcf857x_probe()
421 		client->name);  in pcf857x_probe()
426 static int pcf857x_remove(struct i2c_client *client)  in pcf857x_remove()  argument
428 	struct pcf857x_platform_data	*pdata = dev_get_platdata(&client->dev);  in pcf857x_remove()
429 	struct pcf857x			*gpio = i2c_get_clientdata(client);  in pcf857x_remove()
433 		status = pdata->teardown(client,  in pcf857x_remove()
437 			dev_err(&client->dev, "%s --> %d\n",  in pcf857x_remove()