1 // SPDX-License-Identifier: GPL-2.0
54 /* multi touch related event masks */
61 /* key related event masks */
116 	if (value != sdata->led_status && sdata->ledvdd) {  in stmfts_brightness_set()
118 			regulator_disable(sdata->ledvdd);  in stmfts_brightness_set()
120 			err = regulator_enable(sdata->ledvdd);  in stmfts_brightness_set()
122 				dev_warn(&sdata->client->dev,  in stmfts_brightness_set()
128 		sdata->led_status = value;  in stmfts_brightness_set()
139 	return !!regulator_is_enabled(sdata->ledvdd);  in stmfts_brightness_get()
151 			.addr	= sdata->client->addr,  in stmfts_read_events()
156 			.addr	= sdata->client->addr,  in stmfts_read_events()
159 			.buf	= sdata->data,  in stmfts_read_events()
164 	ret = i2c_transfer(sdata->client->adapter, msgs, ARRAY_SIZE(msgs));  in stmfts_read_events()
168 	return ret == ARRAY_SIZE(msgs) ? 0 : -EIO;  in stmfts_read_events()
172 					const u8 event[])  in stmfts_report_contact_event()  argument
174 	u8 slot_id = (event[0] & STMFTS_MASK_TOUCH_ID) >> 4;  in stmfts_report_contact_event()
175 	u16 x = event[1] | ((event[2] & STMFTS_MASK_X_MSB) << 8);  in stmfts_report_contact_event()
176 	u16 y = (event[2] >> 4) | (event[3] << 4);  in stmfts_report_contact_event()
177 	u8 maj = event[4];  in stmfts_report_contact_event()
178 	u8 min = event[5];  in stmfts_report_contact_event()
179 	u8 orientation = event[6];  in stmfts_report_contact_event()
180 	u8 area = event[7];  in stmfts_report_contact_event()
182 	input_mt_slot(sdata->input, slot_id);  in stmfts_report_contact_event()
184 	input_mt_report_slot_state(sdata->input, MT_TOOL_FINGER, true);  in stmfts_report_contact_event()
185 	input_report_abs(sdata->input, ABS_MT_POSITION_X, x);  in stmfts_report_contact_event()
186 	input_report_abs(sdata->input, ABS_MT_POSITION_Y, y);  in stmfts_report_contact_event()
187 	input_report_abs(sdata->input, ABS_MT_TOUCH_MAJOR, maj);  in stmfts_report_contact_event()
188 	input_report_abs(sdata->input, ABS_MT_TOUCH_MINOR, min);  in stmfts_report_contact_event()
189 	input_report_abs(sdata->input, ABS_MT_PRESSURE, area);  in stmfts_report_contact_event()
190 	input_report_abs(sdata->input, ABS_MT_ORIENTATION, orientation);  in stmfts_report_contact_event()
192 	input_sync(sdata->input);  in stmfts_report_contact_event()
196 					  const u8 event[])  in stmfts_report_contact_release()  argument
198 	u8 slot_id = (event[0] & STMFTS_MASK_TOUCH_ID) >> 4;  in stmfts_report_contact_release()
200 	input_mt_slot(sdata->input, slot_id);  in stmfts_report_contact_release()
201 	input_mt_report_slot_inactive(sdata->input);  in stmfts_report_contact_release()
203 	input_sync(sdata->input);  in stmfts_report_contact_release()
207 				      const u8 event[])  in stmfts_report_hover_event()  argument
209 	u16 x = (event[2] << 4) | (event[4] >> 4);  in stmfts_report_hover_event()
210 	u16 y = (event[3] << 4) | (event[4] & STMFTS_MASK_Y_LSB);  in stmfts_report_hover_event()
211 	u8 z = event[5];  in stmfts_report_hover_event()
213 	input_report_abs(sdata->input, ABS_X, x);  in stmfts_report_hover_event()
214 	input_report_abs(sdata->input, ABS_Y, y);  in stmfts_report_hover_event()
215 	input_report_abs(sdata->input, ABS_DISTANCE, z);  in stmfts_report_hover_event()
217 	input_sync(sdata->input);  in stmfts_report_hover_event()
220 static void stmfts_report_key_event(struct stmfts_data *sdata, const u8 event[])  in stmfts_report_key_event()  argument
222 	switch (event[2]) {  in stmfts_report_key_event()
224 		input_report_key(sdata->input, KEY_BACK, 0);  in stmfts_report_key_event()
225 		input_report_key(sdata->input, KEY_MENU, 0);  in stmfts_report_key_event()
229 		input_report_key(sdata->input, KEY_BACK, 1);  in stmfts_report_key_event()
233 		input_report_key(sdata->input, KEY_MENU, 1);  in stmfts_report_key_event()
237 		dev_warn(&sdata->client->dev,  in stmfts_report_key_event()
238 			 "unknown key event: %#02x\n", event[2]);  in stmfts_report_key_event()
242 	input_sync(sdata->input);  in stmfts_report_key_event()
250 		u8 *event = &sdata->data[i * STMFTS_EVENT_SIZE];  in stmfts_parse_events()  local
252 		switch (event[0]) {  in stmfts_parse_events()
257 			complete(&sdata->cmd_done);  in stmfts_parse_events()
265 		switch (event[0] & STMFTS_MASK_EVENT_ID) {  in stmfts_parse_events()
269 			stmfts_report_contact_event(sdata, event);  in stmfts_parse_events()
273 			stmfts_report_contact_release(sdata, event);  in stmfts_parse_events()
279 			stmfts_report_hover_event(sdata, event);  in stmfts_parse_events()
283 			stmfts_report_key_event(sdata, event);  in stmfts_parse_events()
287 			dev_warn(&sdata->client->dev,  in stmfts_parse_events()
289 					event[6], event[5], event[4],  in stmfts_parse_events()
290 					event[3], event[2], event[1]);  in stmfts_parse_events()
294 			dev_err(&sdata->client->dev,  in stmfts_parse_events()
295 				"unknown event %#02x\n", event[0]);  in stmfts_parse_events()
305 	mutex_lock(&sdata->mutex);  in stmfts_irq_handler()
309 		dev_err(&sdata->client->dev,  in stmfts_irq_handler()
314 	mutex_unlock(&sdata->mutex);  in stmfts_irq_handler()
322 	reinit_completion(&sdata->cmd_done);  in stmfts_command()
324 	err = i2c_smbus_write_byte(sdata->client, cmd);  in stmfts_command()
328 	if (!wait_for_completion_timeout(&sdata->cmd_done,  in stmfts_command()
330 		return -ETIMEDOUT;  in stmfts_command()
340 	err = pm_runtime_resume_and_get(&sdata->client->dev);  in stmfts_input_open()
344 	err = i2c_smbus_write_byte(sdata->client, STMFTS_MS_MT_SENSE_ON);  in stmfts_input_open()
346 		pm_runtime_put_sync(&sdata->client->dev);  in stmfts_input_open()
350 	mutex_lock(&sdata->mutex);  in stmfts_input_open()
351 	sdata->running = true;  in stmfts_input_open()
353 	if (sdata->hover_enabled) {  in stmfts_input_open()
354 		err = i2c_smbus_write_byte(sdata->client,  in stmfts_input_open()
357 			dev_warn(&sdata->client->dev,  in stmfts_input_open()
360 	mutex_unlock(&sdata->mutex);  in stmfts_input_open()
362 	if (sdata->use_key) {  in stmfts_input_open()
363 		err = i2c_smbus_write_byte(sdata->client,  in stmfts_input_open()
366 			/* I can still use only the touch screen */  in stmfts_input_open()
367 			dev_warn(&sdata->client->dev,  in stmfts_input_open()
379 	err = i2c_smbus_write_byte(sdata->client, STMFTS_MS_MT_SENSE_OFF);  in stmfts_input_close()
381 		dev_warn(&sdata->client->dev,  in stmfts_input_close()
384 	mutex_lock(&sdata->mutex);  in stmfts_input_close()
386 	sdata->running = false;  in stmfts_input_close()
388 	if (sdata->hover_enabled) {  in stmfts_input_close()
389 		err = i2c_smbus_write_byte(sdata->client,  in stmfts_input_close()
392 			dev_warn(&sdata->client->dev,  in stmfts_input_close()
395 	mutex_unlock(&sdata->mutex);  in stmfts_input_close()
397 	if (sdata->use_key) {  in stmfts_input_close()
398 		err = i2c_smbus_write_byte(sdata->client,  in stmfts_input_close()
401 			dev_warn(&sdata->client->dev,  in stmfts_input_close()
405 	pm_runtime_put_sync(&sdata->client->dev);  in stmfts_input_close()
413 	return sprintf(buf, "%#x\n", sdata->chip_id);  in stmfts_sysfs_chip_id()
421 	return sprintf(buf, "%u\n", sdata->chip_ver);  in stmfts_sysfs_chip_version()
429 	return sprintf(buf, "%u\n", sdata->fw_ver);  in stmfts_sysfs_fw_ver()
437 	return sprintf(buf, "%#x\n", sdata->config_id);  in stmfts_sysfs_config_id()
445 	return sprintf(buf, "%u\n", sdata->config_ver);  in stmfts_sysfs_config_version()
455 	err = i2c_smbus_read_i2c_block_data(sdata->client, STMFTS_READ_STATUS,  in stmfts_sysfs_read_status()
468 	return sprintf(buf, "%u\n", sdata->hover_enabled);  in stmfts_sysfs_hover_enable_read()
480 		return -EINVAL;  in stmfts_sysfs_hover_enable_write()
482 	mutex_lock(&sdata->mutex);  in stmfts_sysfs_hover_enable_write()
484 	if (value && sdata->hover_enabled)  in stmfts_sysfs_hover_enable_write()
487 	if (sdata->running)  in stmfts_sysfs_hover_enable_write()
488 		err = i2c_smbus_write_byte(sdata->client,  in stmfts_sysfs_hover_enable_write()
493 		sdata->hover_enabled = !!value;  in stmfts_sysfs_hover_enable_write()
496 	mutex_unlock(&sdata->mutex);  in stmfts_sysfs_hover_enable_write()
527 	err = regulator_bulk_enable(ARRAY_SIZE(sdata->regulators),  in stmfts_power_on()
528 				    sdata->regulators);  in stmfts_power_on()
538 	err = i2c_smbus_read_i2c_block_data(sdata->client, STMFTS_READ_INFO,  in stmfts_power_on()
543 		return -EIO;  in stmfts_power_on()
545 	sdata->chip_id = be16_to_cpup((__be16 *)&reg[6]);  in stmfts_power_on()
546 	sdata->chip_ver = reg[0];  in stmfts_power_on()
547 	sdata->fw_ver = be16_to_cpup((__be16 *)&reg[2]);  in stmfts_power_on()
548 	sdata->config_id = reg[4];  in stmfts_power_on()
549 	sdata->config_ver = reg[5];  in stmfts_power_on()
551 	enable_irq(sdata->client->irq);  in stmfts_power_on()
566 		dev_warn(&sdata->client->dev,  in stmfts_power_on()
572 		dev_warn(&sdata->client->dev,  in stmfts_power_on()
583 	(void) i2c_smbus_write_byte(sdata->client, STMFTS_SLEEP_IN);  in stmfts_power_on()
592 	disable_irq(sdata->client->irq);  in stmfts_power_off()
593 	regulator_bulk_disable(ARRAY_SIZE(sdata->regulators),  in stmfts_power_off()
594 						sdata->regulators);  in stmfts_power_off()
597 /* This function is void because I don't want to prevent using the touch key
605 	sdata->ledvdd = devm_regulator_get(&sdata->client->dev, "ledvdd");  in stmfts_enable_led()
606 	if (IS_ERR(sdata->ledvdd))  in stmfts_enable_led()
607 		return PTR_ERR(sdata->ledvdd);  in stmfts_enable_led()
609 	sdata->led_cdev.name = STMFTS_DEV_NAME;  in stmfts_enable_led()
610 	sdata->led_cdev.max_brightness = LED_ON;  in stmfts_enable_led()
611 	sdata->led_cdev.brightness = LED_OFF;  in stmfts_enable_led()
612 	sdata->led_cdev.brightness_set_blocking = stmfts_brightness_set;  in stmfts_enable_led()
613 	sdata->led_cdev.brightness_get = stmfts_brightness_get;  in stmfts_enable_led()
615 	err = devm_led_classdev_register(&sdata->client->dev, &sdata->led_cdev);  in stmfts_enable_led()
617 		devm_regulator_put(sdata->ledvdd);  in stmfts_enable_led()
629 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C |  in stmfts_probe()
632 		return -ENODEV;  in stmfts_probe()
634 	sdata = devm_kzalloc(&client->dev, sizeof(*sdata), GFP_KERNEL);  in stmfts_probe()
636 		return -ENOMEM;  in stmfts_probe()
640 	sdata->client = client;  in stmfts_probe()
641 	mutex_init(&sdata->mutex);  in stmfts_probe()
642 	init_completion(&sdata->cmd_done);  in stmfts_probe()
644 	sdata->regulators[STMFTS_REGULATOR_VDD].supply = "vdd";  in stmfts_probe()
645 	sdata->regulators[STMFTS_REGULATOR_AVDD].supply = "avdd";  in stmfts_probe()
646 	err = devm_regulator_bulk_get(&client->dev,  in stmfts_probe()
647 				      ARRAY_SIZE(sdata->regulators),  in stmfts_probe()
648 				      sdata->regulators);  in stmfts_probe()
652 	sdata->input = devm_input_allocate_device(&client->dev);  in stmfts_probe()
653 	if (!sdata->input)  in stmfts_probe()
654 		return -ENOMEM;  in stmfts_probe()
656 	sdata->input->name = STMFTS_DEV_NAME;  in stmfts_probe()
657 	sdata->input->id.bustype = BUS_I2C;  in stmfts_probe()
658 	sdata->input->open = stmfts_input_open;  in stmfts_probe()
659 	sdata->input->close = stmfts_input_close;  in stmfts_probe()
661 	input_set_capability(sdata->input, EV_ABS, ABS_MT_POSITION_X);  in stmfts_probe()
662 	input_set_capability(sdata->input, EV_ABS, ABS_MT_POSITION_Y);  in stmfts_probe()
663 	touchscreen_parse_properties(sdata->input, true, &sdata->prop);  in stmfts_probe()
665 	input_set_abs_params(sdata->input, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);  in stmfts_probe()
666 	input_set_abs_params(sdata->input, ABS_MT_TOUCH_MINOR, 0, 255, 0, 0);  in stmfts_probe()
667 	input_set_abs_params(sdata->input, ABS_MT_ORIENTATION, 0, 255, 0, 0);  in stmfts_probe()
668 	input_set_abs_params(sdata->input, ABS_MT_PRESSURE, 0, 255, 0, 0);  in stmfts_probe()
669 	input_set_abs_params(sdata->input, ABS_DISTANCE, 0, 255, 0, 0);  in stmfts_probe()
671 	sdata->use_key = device_property_read_bool(&client->dev,  in stmfts_probe()
672 						   "touch-key-connected");  in stmfts_probe()
673 	if (sdata->use_key) {  in stmfts_probe()
674 		input_set_capability(sdata->input, EV_KEY, KEY_MENU);  in stmfts_probe()
675 		input_set_capability(sdata->input, EV_KEY, KEY_BACK);  in stmfts_probe()
678 	err = input_mt_init_slots(sdata->input,  in stmfts_probe()
683 	input_set_drvdata(sdata->input, sdata);  in stmfts_probe()
692 	err = devm_request_threaded_irq(&client->dev, client->irq,  in stmfts_probe()
699 	dev_dbg(&client->dev, "initializing ST-Microelectronics FTS...\n");  in stmfts_probe()
705 	err = devm_add_action_or_reset(&client->dev, stmfts_power_off, sdata);  in stmfts_probe()
709 	err = input_register_device(sdata->input);  in stmfts_probe()
713 	if (sdata->use_key) {  in stmfts_probe()
722 			dev_warn(&client->dev, "unable to use touchkey leds\n");  in stmfts_probe()
723 			sdata->ledvdd = NULL;  in stmfts_probe()
727 	pm_runtime_enable(&client->dev);  in stmfts_probe()
728 	device_enable_async_suspend(&client->dev);  in stmfts_probe()
735 	pm_runtime_disable(&client->dev);  in stmfts_remove()
743 	ret = i2c_smbus_write_byte(sdata->client, STMFTS_SLEEP_IN);  in stmfts_runtime_suspend()
755 	ret = i2c_smbus_write_byte(sdata->client, STMFTS_SLEEP_OUT);  in stmfts_runtime_resume()
813 MODULE_DESCRIPTION("STMicroelectronics FTS Touch Screen");