57 static int tca6416_write_reg(struct tca6416_keypad_chip *chip, int reg, u16 val)  in tca6416_write_reg()  argument
61 	error = chip->io_size > 8 ?  in tca6416_write_reg()
62 		i2c_smbus_write_word_data(chip->client, reg << 1, val) :  in tca6416_write_reg()
63 		i2c_smbus_write_byte_data(chip->client, reg, val);  in tca6416_write_reg()
65 		dev_err(&chip->client->dev,  in tca6416_write_reg()
74 static int tca6416_read_reg(struct tca6416_keypad_chip *chip, int reg, u16 *val)  in tca6416_read_reg()  argument
78 	retval = chip->io_size > 8 ?  in tca6416_read_reg()
79 		 i2c_smbus_read_word_data(chip->client, reg << 1) :  in tca6416_read_reg()
80 		 i2c_smbus_read_byte_data(chip->client, reg);  in tca6416_read_reg()
82 		dev_err(&chip->client->dev, "%s failed, reg: %d, error: %d\n",  in tca6416_read_reg()
91 static void tca6416_keys_scan(struct tca6416_keypad_chip *chip)  in tca6416_keys_scan()  argument
93 	struct input_dev *input = chip->input;  in tca6416_keys_scan()
97 	error = tca6416_read_reg(chip, TCA6416_INPUT, &reg_val);  in tca6416_keys_scan()
101 	reg_val &= chip->pinmask;  in tca6416_keys_scan()
104 	val = reg_val ^ chip->reg_input;  in tca6416_keys_scan()
105 	chip->reg_input = reg_val;  in tca6416_keys_scan()
109 			struct tca6416_button *button = &chip->buttons[pin_index];  in tca6416_keys_scan()
118 		if (chip->pinmask & (1 << i))  in tca6416_keys_scan()
128 	struct tca6416_keypad_chip *chip = dev_id;  in tca6416_keys_isr()  local
130 	tca6416_keys_scan(chip);  in tca6416_keys_isr()
137 	struct tca6416_keypad_chip *chip =  in tca6416_keys_work_func()  local
140 	tca6416_keys_scan(chip);  in tca6416_keys_work_func()
141 	schedule_delayed_work(&chip->dwork, msecs_to_jiffies(100));  in tca6416_keys_work_func()
146 	struct tca6416_keypad_chip *chip = input_get_drvdata(dev);  in tca6416_keys_open()  local
149 	tca6416_keys_scan(chip);  in tca6416_keys_open()
151 	if (chip->use_polling)  in tca6416_keys_open()
152 		schedule_delayed_work(&chip->dwork, msecs_to_jiffies(100));  in tca6416_keys_open()
154 		enable_irq(chip->irqnum);  in tca6416_keys_open()
161 	struct tca6416_keypad_chip *chip = input_get_drvdata(dev);  in tca6416_keys_close()  local
163 	if (chip->use_polling)  in tca6416_keys_close()
164 		cancel_delayed_work_sync(&chip->dwork);  in tca6416_keys_close()
166 		disable_irq(chip->irqnum);  in tca6416_keys_close()
169 static int tca6416_setup_registers(struct tca6416_keypad_chip *chip)  in tca6416_setup_registers()  argument
173 	error = tca6416_read_reg(chip, TCA6416_OUTPUT, &chip->reg_output);  in tca6416_setup_registers()
177 	error = tca6416_read_reg(chip, TCA6416_DIRECTION, &chip->reg_direction);  in tca6416_setup_registers()
182 	error = tca6416_write_reg(chip, TCA6416_DIRECTION,  in tca6416_setup_registers()
183 				  chip->reg_direction | chip->pinmask);  in tca6416_setup_registers()
187 	error = tca6416_read_reg(chip, TCA6416_DIRECTION, &chip->reg_direction);  in tca6416_setup_registers()
191 	error = tca6416_read_reg(chip, TCA6416_INPUT, &chip->reg_input);  in tca6416_setup_registers()
195 	chip->reg_input &= chip->pinmask;  in tca6416_setup_registers()
204 	struct tca6416_keypad_chip *chip;  in tca6416_keypad_probe()  local
222 	chip = kzalloc(sizeof(struct tca6416_keypad_chip) +  in tca6416_keypad_probe()
226 	if (!chip || !input) {  in tca6416_keypad_probe()
231 	chip->client = client;  in tca6416_keypad_probe()
232 	chip->input = input;  in tca6416_keypad_probe()
233 	chip->io_size = id->driver_data;  in tca6416_keypad_probe()
234 	chip->pinmask = pdata->pinmask;  in tca6416_keypad_probe()
235 	chip->use_polling = pdata->use_polling;  in tca6416_keypad_probe()
237 	INIT_DELAYED_WORK(&chip->dwork, tca6416_keys_work_func);  in tca6416_keypad_probe()
258 		chip->buttons[i] = pdata->buttons[i];  in tca6416_keypad_probe()
263 	input_set_drvdata(input, chip);  in tca6416_keypad_probe()
269 	error = tca6416_setup_registers(chip);  in tca6416_keypad_probe()
273 	if (!chip->use_polling) {  in tca6416_keypad_probe()
275 			chip->irqnum = gpio_to_irq(client->irq);  in tca6416_keypad_probe()
277 			chip->irqnum = client->irq;  in tca6416_keypad_probe()
279 		error = request_threaded_irq(chip->irqnum, NULL,  in tca6416_keypad_probe()
283 					     "tca6416-keypad", chip);  in tca6416_keypad_probe()
287 				chip->irqnum, error);  in tca6416_keypad_probe()
290 		disable_irq(chip->irqnum);  in tca6416_keypad_probe()
300 	i2c_set_clientdata(client, chip);  in tca6416_keypad_probe()
306 	if (!chip->use_polling) {  in tca6416_keypad_probe()
307 		free_irq(chip->irqnum, chip);  in tca6416_keypad_probe()
308 		enable_irq(chip->irqnum);  in tca6416_keypad_probe()
312 	kfree(chip);  in tca6416_keypad_probe()
318 	struct tca6416_keypad_chip *chip = i2c_get_clientdata(client);  in tca6416_keypad_remove()  local
320 	if (!chip->use_polling) {  in tca6416_keypad_remove()
321 		free_irq(chip->irqnum, chip);  in tca6416_keypad_remove()
322 		enable_irq(chip->irqnum);  in tca6416_keypad_remove()
325 	input_unregister_device(chip->input);  in tca6416_keypad_remove()
326 	kfree(chip);  in tca6416_keypad_remove()
335 	struct tca6416_keypad_chip *chip = i2c_get_clientdata(client);  in tca6416_keypad_suspend()  local
338 		enable_irq_wake(chip->irqnum);  in tca6416_keypad_suspend()
346 	struct tca6416_keypad_chip *chip = i2c_get_clientdata(client);  in tca6416_keypad_resume()  local
349 		disable_irq_wake(chip->irqnum);  in tca6416_keypad_resume()