123 static int tca8418_write_byte(struct tca8418_keypad *keypad_data,  in tca8418_write_byte()  argument
128 	error = i2c_smbus_write_byte_data(keypad_data->client, reg, val);  in tca8418_write_byte()
130 		dev_err(&keypad_data->client->dev,  in tca8418_write_byte()
142 static int tca8418_read_byte(struct tca8418_keypad *keypad_data,  in tca8418_read_byte()  argument
147 	error = i2c_smbus_read_byte_data(keypad_data->client, reg);  in tca8418_read_byte()
149 		dev_err(&keypad_data->client->dev,  in tca8418_read_byte()
160 static void tca8418_read_keypad(struct tca8418_keypad *keypad_data)  in tca8418_read_keypad()  argument
162 	struct input_dev *input = keypad_data->input;  in tca8418_read_keypad()
168 	error = tca8418_read_byte(keypad_data, REG_KEY_EVENT_A, &reg);  in tca8418_read_keypad()
181 		code = MATRIX_SCAN_CODE(row, col, keypad_data->row_shift);  in tca8418_read_keypad()
186 		error = tca8418_read_byte(keypad_data, REG_KEY_EVENT_A, &reg);  in tca8418_read_keypad()
190 		dev_err(&keypad_data->client->dev,  in tca8418_read_keypad()
201 	struct tca8418_keypad *keypad_data = dev_id;  in tca8418_irq_handler()  local
205 	error = tca8418_read_byte(keypad_data, REG_INT_STAT, &reg);  in tca8418_irq_handler()
207 		dev_err(&keypad_data->client->dev,  in tca8418_irq_handler()
216 		dev_warn(&keypad_data->client->dev, "overflow occurred\n");  in tca8418_irq_handler()
219 		tca8418_read_keypad(keypad_data);  in tca8418_irq_handler()
223 	error = tca8418_write_byte(keypad_data, REG_INT_STAT, reg);  in tca8418_irq_handler()
225 		dev_err(&keypad_data->client->dev,  in tca8418_irq_handler()
234 static int tca8418_configure(struct tca8418_keypad *keypad_data,  in tca8418_configure()  argument
240 	error = tca8418_write_byte(keypad_data, REG_CFG,  in tca8418_configure()
251 	error |= tca8418_write_byte(keypad_data, REG_KP_GPIO1, reg);  in tca8418_configure()
252 	error |= tca8418_write_byte(keypad_data, REG_KP_GPIO2, reg >> 8);  in tca8418_configure()
253 	error |= tca8418_write_byte(keypad_data, REG_KP_GPIO3, reg >> 16);  in tca8418_configure()
256 	error |= tca8418_write_byte(keypad_data, REG_DEBOUNCE_DIS1, reg);  in tca8418_configure()
257 	error |= tca8418_write_byte(keypad_data, REG_DEBOUNCE_DIS2, reg >> 8);  in tca8418_configure()
258 	error |= tca8418_write_byte(keypad_data, REG_DEBOUNCE_DIS3, reg >> 16);  in tca8418_configure()
269 	struct tca8418_keypad *keypad_data;  in tca8418_keypad_probe()  local
320 	keypad_data = devm_kzalloc(dev, sizeof(*keypad_data), GFP_KERNEL);  in tca8418_keypad_probe()
321 	if (!keypad_data)  in tca8418_keypad_probe()
324 	keypad_data->client = client;  in tca8418_keypad_probe()
325 	keypad_data->row_shift = row_shift;  in tca8418_keypad_probe()
328 	error = tca8418_configure(keypad_data, rows, cols);  in tca8418_keypad_probe()
337 	keypad_data->input = input;  in tca8418_keypad_probe()
356 	input_set_drvdata(input, keypad_data);  in tca8418_keypad_probe()
366 					  client->name, keypad_data);  in tca8418_keypad_probe()