89 	struct i2c_client	*client;  member
95 	int (*write)(struct i2c_client *client, unsigned data);
96 	int (*read)(struct i2c_client *client);
103 static int i2c_write_le8(struct i2c_client *client, unsigned data)  in i2c_write_le8()  argument
105 	return i2c_smbus_write_byte(client, data);  in i2c_write_le8()
108 static int i2c_read_le8(struct i2c_client *client)  in i2c_read_le8()  argument
110 	return (int)i2c_smbus_read_byte(client);  in i2c_read_le8()
115 static int i2c_write_le16(struct i2c_client *client, unsigned word)  in i2c_write_le16()  argument
120 	status = i2c_master_send(client, buf, 2);  in i2c_write_le16()
124 static int i2c_read_le16(struct i2c_client *client)  in i2c_read_le16()  argument
129 	status = i2c_master_recv(client, buf, 2);  in i2c_read_le16()
144 	status = gpio->write(gpio->client, gpio->out);  in pcf857x_input()
155 	value = gpio->read(gpio->client);  in pcf857x_get()
170 	status = gpio->write(gpio->client, gpio->out);  in pcf857x_output()
188 	status = gpio->read(gpio->client);  in pcf857x_irq()
221 	irq_set_irq_wake(gpio->client->irq, on);  in pcf857x_irq_set_wake()
239 static int pcf857x_probe(struct i2c_client *client,  in pcf857x_probe()  argument
242 	struct pcf857x_platform_data	*pdata = dev_get_platdata(&client->dev);  in pcf857x_probe()
243 	struct device_node		*np = client->dev.of_node;  in pcf857x_probe()
253 		dev_dbg(&client->dev, "no platform data\n");  in pcf857x_probe()
256 	gpio = devm_kzalloc(&client->dev, sizeof(*gpio), GFP_KERNEL);  in pcf857x_probe()
265 	gpio->chip.dev			= &client->dev;  in pcf857x_probe()
288 		if (!i2c_check_functionality(client->adapter,  in pcf857x_probe()
294 			status = i2c_smbus_read_byte(client);  in pcf857x_probe()
306 		if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))  in pcf857x_probe()
311 			status = i2c_read_le16(client);  in pcf857x_probe()
314 		dev_dbg(&client->dev, "unsupported number of gpios\n");  in pcf857x_probe()
321 	gpio->chip.label = client->name;  in pcf857x_probe()
323 	gpio->client = client;  in pcf857x_probe()
324 	i2c_set_clientdata(client, gpio);  in pcf857x_probe()
349 	if (client->irq) {  in pcf857x_probe()
354 			dev_err(&client->dev, "cannot add irqchip\n");  in pcf857x_probe()
358 		status = devm_request_threaded_irq(&client->dev, client->irq,  in pcf857x_probe()
361 					dev_name(&client->dev), gpio);  in pcf857x_probe()
366 					     client->irq, NULL);  in pcf857x_probe()
373 		status = pdata->setup(client,  in pcf857x_probe()
377 			dev_warn(&client->dev, "setup --> %d\n", status);  in pcf857x_probe()
380 	dev_info(&client->dev, "probed\n");  in pcf857x_probe()
388 	dev_dbg(&client->dev, "probe error %d for '%s'\n", status,  in pcf857x_probe()
389 		client->name);  in pcf857x_probe()
394 static int pcf857x_remove(struct i2c_client *client)  in pcf857x_remove()  argument
396 	struct pcf857x_platform_data	*pdata = dev_get_platdata(&client->dev);  in pcf857x_remove()
397 	struct pcf857x			*gpio = i2c_get_clientdata(client);  in pcf857x_remove()
401 		status = pdata->teardown(client,  in pcf857x_remove()
405 			dev_err(&client->dev, "%s --> %d\n",  in pcf857x_remove()