3  * TM2 touchkey device driver
26 #define TM2_TOUCHKEY_DEV_NAME		"tm2-touchkey"
89 	struct tm2_touchkey_data *touchkey =  in tm2_touchkey_led_brightness_set()  local
96 		data = touchkey->variant->cmd_led_off;  in tm2_touchkey_led_brightness_set()
99 		data = touchkey->variant->cmd_led_on;  in tm2_touchkey_led_brightness_set()
102 	if (!touchkey->variant->fixed_regulator)  in tm2_touchkey_led_brightness_set()
103 		regulator_set_voltage(touchkey->vdd, volt, volt);  in tm2_touchkey_led_brightness_set()
105 	return touchkey->variant->no_reg ?  in tm2_touchkey_led_brightness_set()
106 		i2c_smbus_write_byte(touchkey->client, data) :  in tm2_touchkey_led_brightness_set()
107 		i2c_smbus_write_byte_data(touchkey->client,  in tm2_touchkey_led_brightness_set()
108 					  touchkey->variant->base_reg, data);  in tm2_touchkey_led_brightness_set()
111 static int tm2_touchkey_power_enable(struct tm2_touchkey_data *touchkey)  in tm2_touchkey_power_enable()  argument
115 	error = regulator_bulk_enable(ARRAY_SIZE(touchkey->regulators),  in tm2_touchkey_power_enable()
116 				      touchkey->regulators);  in tm2_touchkey_power_enable()
128 	struct tm2_touchkey_data *touchkey = data;  in tm2_touchkey_power_disable()  local
130 	regulator_bulk_disable(ARRAY_SIZE(touchkey->regulators),  in tm2_touchkey_power_disable()
131 			       touchkey->regulators);  in tm2_touchkey_power_disable()
136 	struct tm2_touchkey_data *touchkey = devid;  in tm2_touchkey_irq_handler()  local
141 	if (touchkey->variant->no_reg)  in tm2_touchkey_irq_handler()
142 		data = i2c_smbus_read_byte(touchkey->client);  in tm2_touchkey_irq_handler()
144 		data = i2c_smbus_read_byte_data(touchkey->client,  in tm2_touchkey_irq_handler()
145 						touchkey->variant->keycode_reg);  in tm2_touchkey_irq_handler()
147 		dev_err(&touchkey->client->dev,  in tm2_touchkey_irq_handler()
153 	if (index < 0 || index >= touchkey->num_keycodes) {  in tm2_touchkey_irq_handler()
154 		dev_warn(&touchkey->client->dev,  in tm2_touchkey_irq_handler()
159 	input_event(touchkey->input_dev, EV_MSC, MSC_SCAN, index);  in tm2_touchkey_irq_handler()
162 		for (i = 0; i < touchkey->num_keycodes; i++)  in tm2_touchkey_irq_handler()
163 			input_report_key(touchkey->input_dev,  in tm2_touchkey_irq_handler()
164 					 touchkey->keycodes[i], 0);  in tm2_touchkey_irq_handler()
166 		input_report_key(touchkey->input_dev,  in tm2_touchkey_irq_handler()
167 				 touchkey->keycodes[index], 1);  in tm2_touchkey_irq_handler()
170 	input_sync(touchkey->input_dev);  in tm2_touchkey_irq_handler()
173 	if (touchkey->variant->fixed_regulator &&  in tm2_touchkey_irq_handler()
176 		if (touchkey->led_dev.brightness == LED_OFF)  in tm2_touchkey_irq_handler()
177 			tm2_touchkey_led_brightness_set(&touchkey->led_dev,  in tm2_touchkey_irq_handler()
188 	struct tm2_touchkey_data *touchkey;  in tm2_touchkey_probe()  local
198 	touchkey = devm_kzalloc(&client->dev, sizeof(*touchkey), GFP_KERNEL);  in tm2_touchkey_probe()
199 	if (!touchkey)  in tm2_touchkey_probe()
202 	touchkey->client = client;  in tm2_touchkey_probe()
203 	i2c_set_clientdata(client, touchkey);  in tm2_touchkey_probe()
205 	touchkey->variant = of_device_get_match_data(&client->dev);  in tm2_touchkey_probe()
207 	touchkey->regulators[0].supply = "vcc";  in tm2_touchkey_probe()
208 	touchkey->regulators[1].supply = "vdd";  in tm2_touchkey_probe()
209 	touchkey->regulators[2].supply = "vddio";  in tm2_touchkey_probe()
211 					ARRAY_SIZE(touchkey->regulators),  in tm2_touchkey_probe()
212 					touchkey->regulators);  in tm2_touchkey_probe()
219 	touchkey->vdd = touchkey->regulators[1].consumer;  in tm2_touchkey_probe()
221 	touchkey->num_keycodes = of_property_read_variable_u32_array(np,  in tm2_touchkey_probe()
222 					"linux,keycodes", touchkey->keycodes, 0,  in tm2_touchkey_probe()
223 					ARRAY_SIZE(touchkey->keycodes));  in tm2_touchkey_probe()
224 	if (touchkey->num_keycodes <= 0) {  in tm2_touchkey_probe()
226 		touchkey->keycodes[0] = KEY_PHONE;  in tm2_touchkey_probe()
227 		touchkey->keycodes[1] = KEY_BACK;  in tm2_touchkey_probe()
228 		touchkey->num_keycodes = 2;  in tm2_touchkey_probe()
231 	error = tm2_touchkey_power_enable(touchkey);  in tm2_touchkey_probe()
238 					 tm2_touchkey_power_disable, touchkey);  in tm2_touchkey_probe()
246 	touchkey->input_dev = devm_input_allocate_device(&client->dev);  in tm2_touchkey_probe()
247 	if (!touchkey->input_dev) {  in tm2_touchkey_probe()
252 	touchkey->input_dev->name = TM2_TOUCHKEY_DEV_NAME;  in tm2_touchkey_probe()
253 	touchkey->input_dev->id.bustype = BUS_I2C;  in tm2_touchkey_probe()
255 	touchkey->input_dev->keycode = touchkey->keycodes;  in tm2_touchkey_probe()
256 	touchkey->input_dev->keycodemax = touchkey->num_keycodes;  in tm2_touchkey_probe()
257 	touchkey->input_dev->keycodesize = sizeof(touchkey->keycodes[0]);  in tm2_touchkey_probe()
259 	input_set_capability(touchkey->input_dev, EV_MSC, MSC_SCAN);  in tm2_touchkey_probe()
260 	for (i = 0; i < touchkey->num_keycodes; i++)  in tm2_touchkey_probe()
261 		input_set_capability(touchkey->input_dev, EV_KEY,  in tm2_touchkey_probe()
262 				     touchkey->keycodes[i]);  in tm2_touchkey_probe()
264 	error = input_register_device(touchkey->input_dev);  in tm2_touchkey_probe()
274 					  TM2_TOUCHKEY_DEV_NAME, touchkey);  in tm2_touchkey_probe()
282 	touchkey->led_dev.name = TM2_TOUCHKEY_DEV_NAME;  in tm2_touchkey_probe()
283 	touchkey->led_dev.brightness = LED_ON;  in tm2_touchkey_probe()
284 	touchkey->led_dev.max_brightness = LED_ON;  in tm2_touchkey_probe()
285 	touchkey->led_dev.brightness_set_blocking =  in tm2_touchkey_probe()
288 	error = devm_led_classdev_register(&client->dev, &touchkey->led_dev);  in tm2_touchkey_probe()
291 			"failed to register touchkey led: %d\n", error);  in tm2_touchkey_probe()
295 	if (touchkey->variant->fixed_regulator)  in tm2_touchkey_probe()
296 		tm2_touchkey_led_brightness_set(&touchkey->led_dev, LED_ON);  in tm2_touchkey_probe()
304 	struct tm2_touchkey_data *touchkey = i2c_get_clientdata(client);  in tm2_touchkey_suspend()  local
307 	tm2_touchkey_power_disable(touchkey);  in tm2_touchkey_suspend()
315 	struct tm2_touchkey_data *touchkey = i2c_get_clientdata(client);  in tm2_touchkey_resume()  local
320 	ret = tm2_touchkey_power_enable(touchkey);  in tm2_touchkey_resume()
338 		.compatible = "cypress,tm2-touchkey",
341 		.compatible = "cypress,midas-touchkey",
344 		.compatible = "cypress,aries-touchkey",
347 		.compatible = "coreriver,tc360-touchkey",
367 MODULE_DESCRIPTION("Samsung touchkey driver");