64 	struct i2c_client *client;  member
67 static int max7359_write_reg(struct i2c_client *client, u8 reg, u8 val)  in max7359_write_reg()  argument
69 	int ret = i2c_smbus_write_byte_data(client, reg, val);  in max7359_write_reg()
72 		dev_err(&client->dev, "%s: reg 0x%x, val 0x%x, err %d\n",  in max7359_write_reg()
77 static int max7359_read_reg(struct i2c_client *client, int reg)  in max7359_read_reg()  argument
79 	int ret = i2c_smbus_read_byte_data(client, reg);  in max7359_read_reg()
82 		dev_err(&client->dev, "%s: reg 0x%x, err %d\n",  in max7359_read_reg()
114 	val = max7359_read_reg(keypad->client, MAX7359_REG_KEYFIFO);  in max7359_interrupt()
121 	dev_dbg(&keypad->client->dev,  in max7359_interrupt()
136 static inline void max7359_fall_deepsleep(struct i2c_client *client)  in max7359_fall_deepsleep()  argument
138 	max7359_write_reg(client, MAX7359_REG_SLEEP, MAX7359_AUTOSLEEP_8192);  in max7359_fall_deepsleep()
145 static inline void max7359_take_catnap(struct i2c_client *client)  in max7359_take_catnap()  argument
147 	max7359_write_reg(client, MAX7359_REG_SLEEP, MAX7359_AUTOSLEEP_256);  in max7359_take_catnap()
154 	max7359_take_catnap(keypad->client);  in max7359_open()
163 	max7359_fall_deepsleep(keypad->client);  in max7359_close()
166 static void max7359_initialize(struct i2c_client *client)  in max7359_initialize()  argument
168 	max7359_write_reg(client, MAX7359_REG_CONFIG,  in max7359_initialize()
174 	max7359_write_reg(client, MAX7359_REG_DEBOUNCE, 0x1F);  in max7359_initialize()
177 	max7359_write_reg(client, MAX7359_REG_INTERRUPT, 0x01);  in max7359_initialize()
179 	max7359_fall_deepsleep(client);  in max7359_initialize()
182 static int max7359_probe(struct i2c_client *client,  in max7359_probe()  argument
186 			dev_get_platdata(&client->dev);  in max7359_probe()
192 	if (!client->irq) {  in max7359_probe()
193 		dev_err(&client->dev, "The irq number should not be zero\n");  in max7359_probe()
198 	ret = max7359_read_reg(client, MAX7359_REG_KEYFIFO);  in max7359_probe()
200 		dev_err(&client->dev, "failed to detect device\n");  in max7359_probe()
204 	dev_dbg(&client->dev, "keys FIFO is 0x%02x\n", ret);  in max7359_probe()
206 	keypad = devm_kzalloc(&client->dev, sizeof(struct max7359_keypad),  in max7359_probe()
209 		dev_err(&client->dev, "failed to allocate memory\n");  in max7359_probe()
213 	input_dev = devm_input_allocate_device(&client->dev);  in max7359_probe()
215 		dev_err(&client->dev, "failed to allocate input device\n");  in max7359_probe()
219 	keypad->client = client;  in max7359_probe()
222 	input_dev->name = client->name;  in max7359_probe()
226 	input_dev->dev.parent = &client->dev;  in max7359_probe()
238 	error = devm_request_threaded_irq(&client->dev, client->irq, NULL,  in max7359_probe()
241 					  client->name, keypad);  in max7359_probe()
243 		dev_err(&client->dev, "failed to register interrupt\n");  in max7359_probe()
250 		dev_err(&client->dev, "failed to register input device\n");  in max7359_probe()
255 	max7359_initialize(client);  in max7359_probe()
257 	i2c_set_clientdata(client, keypad);  in max7359_probe()
258 	device_init_wakeup(&client->dev, 1);  in max7359_probe()
266 	struct i2c_client *client = to_i2c_client(dev);  in max7359_suspend()  local
268 	max7359_fall_deepsleep(client);  in max7359_suspend()
270 	if (device_may_wakeup(&client->dev))  in max7359_suspend()
271 		enable_irq_wake(client->irq);  in max7359_suspend()
278 	struct i2c_client *client = to_i2c_client(dev);  in max7359_resume()  local
280 	if (device_may_wakeup(&client->dev))  in max7359_resume()
281 		disable_irq_wake(client->irq);  in max7359_resume()
284 	max7359_take_catnap(client);  in max7359_resume()