1 // SPDX-License-Identifier: GPL-2.0
3  * Platform driver for Lenovo Yoga Book YB1-X90F/L tablets (Android model)
4  * WMI driver for Lenovo Yoga Book YB1-X91F/L tablets (Windows model)
26 #define YB_MBTN_EVENT_GUID	"243FEC1D-1963-41C1-8100-06A9D82A94B4"
32 #define YB_PDEV_NAME		"yogabook-touch-kbd-digitizer-switch"
69 	if (test_bit(YB_SUSPENDED, &data->flags))  in yogabook_work()
72 	if (test_bit(YB_TABLET_MODE, &data->flags)) {  in yogabook_work()
75 	} else if (test_bit(YB_DIGITIZER_MODE, &data->flags)) {  in yogabook_work()
83 	if (!kbd_on && test_bit(YB_KBD_IS_ON, &data->flags)) {  in yogabook_work()
88 		data->set_kbd_backlight(data, 0);  in yogabook_work()
89 		device_release_driver(data->kbd_dev);  in yogabook_work()
90 		clear_bit(YB_KBD_IS_ON, &data->flags);  in yogabook_work()
93 	if (!digitizer_on && test_bit(YB_DIGITIZER_IS_ON, &data->flags)) {  in yogabook_work()
94 		led_set_brightness(data->pen_led, LED_OFF);  in yogabook_work()
95 		device_release_driver(data->dig_dev);  in yogabook_work()
96 		clear_bit(YB_DIGITIZER_IS_ON, &data->flags);  in yogabook_work()
99 	if (kbd_on && !test_bit(YB_KBD_IS_ON, &data->flags)) {  in yogabook_work()
100 		r = device_reprobe(data->kbd_dev);  in yogabook_work()
102 			dev_warn(data->dev, "Reprobe of keyboard touchscreen failed: %d\n", r);  in yogabook_work()
104 		data->set_kbd_backlight(data, data->brightness);  in yogabook_work()
105 		set_bit(YB_KBD_IS_ON, &data->flags);  in yogabook_work()
108 	if (digitizer_on && !test_bit(YB_DIGITIZER_IS_ON, &data->flags)) {  in yogabook_work()
109 		r = device_reprobe(data->dig_dev);  in yogabook_work()
111 			dev_warn(data->dev, "Reprobe of digitizer failed: %d\n", r);  in yogabook_work()
113 		led_set_brightness(data->pen_led, LED_FULL);  in yogabook_work()
114 		set_bit(YB_DIGITIZER_IS_ON, &data->flags);  in yogabook_work()
120 	if (test_bit(YB_SUSPENDED, &data->flags))  in yogabook_toggle_digitizer_mode()
123 	if (test_bit(YB_DIGITIZER_MODE, &data->flags))  in yogabook_toggle_digitizer_mode()
124 		clear_bit(YB_DIGITIZER_MODE, &data->flags);  in yogabook_toggle_digitizer_mode()
126 		set_bit(YB_DIGITIZER_MODE, &data->flags);  in yogabook_toggle_digitizer_mode()
132 	schedule_work(&data->work);  in yogabook_toggle_digitizer_mode()
139 	if (gpiod_get_value(data->backside_hall_gpio))  in yogabook_backside_hall_irq()
140 		set_bit(YB_TABLET_MODE, &data->flags);  in yogabook_backside_hall_irq()
142 		clear_bit(YB_TABLET_MODE, &data->flags);  in yogabook_backside_hall_irq()
144 	schedule_work(&data->work);  in yogabook_backside_hall_irq()
155 	return data->brightness;  in kbd_brightness_get()
164 		return -EINVAL;  in kbd_brightness_set()
166 	data->brightness = value;  in kbd_brightness_set()
168 	if (!test_bit(YB_KBD_IS_ON, &data->flags))  in kbd_brightness_set()
171 	return data->set_kbd_backlight(data, data->brightness);  in kbd_brightness_set()
183 	.con_id = "pen-icon-led",
191 	data->dev = dev;  in yogabook_probe()
192 	data->brightness = YB_KBD_BL_DEFAULT;  in yogabook_probe()
193 	set_bit(YB_KBD_IS_ON, &data->flags);  in yogabook_probe()
194 	set_bit(YB_DIGITIZER_IS_ON, &data->flags);  in yogabook_probe()
195 	INIT_WORK(&data->work, yogabook_work);  in yogabook_probe()
199 	data->pen_led = devm_led_get(dev, "pen-icon-led");  in yogabook_probe()
202 	if (IS_ERR(data->pen_led))  in yogabook_probe()
203 		return dev_err_probe(dev, PTR_ERR(data->pen_led), "Getting pen icon LED\n");  in yogabook_probe()
207 	data->backside_hall_gpio = devm_gpiod_get(dev, "backside_hall_sw", GPIOD_IN);  in yogabook_probe()
210 	if (IS_ERR(data->backside_hall_gpio))  in yogabook_probe()
211 		return dev_err_probe(dev, PTR_ERR(data->backside_hall_gpio),  in yogabook_probe()
214 	r = gpiod_to_irq(data->backside_hall_gpio);  in yogabook_probe()
218 	data->backside_hall_irq = r;  in yogabook_probe()
221 	data->set_kbd_backlight(data, YB_KBD_BL_DEFAULT);  in yogabook_probe()
223 	r = request_irq(data->backside_hall_irq, yogabook_backside_hall_irq,  in yogabook_probe()
229 	schedule_work(&data->work);  in yogabook_probe()
231 	data->kbd_bl_led.name = kbd_bl_led_name;  in yogabook_probe()
232 	data->kbd_bl_led.brightness_set_blocking = kbd_brightness_set;  in yogabook_probe()
233 	data->kbd_bl_led.brightness_get = kbd_brightness_get;  in yogabook_probe()
234 	data->kbd_bl_led.max_brightness = YB_KBD_BL_MAX;  in yogabook_probe()
236 	r = devm_led_classdev_register(dev, &data->kbd_bl_led);  in yogabook_probe()
238 		dev_err_probe(dev, r, "Registering backlight LED device\n");  in yogabook_probe()
246 	free_irq(data->backside_hall_irq, data);  in yogabook_probe()
247 	cancel_work_sync(&data->work);  in yogabook_probe()
255 	free_irq(data->backside_hall_irq, data);  in yogabook_remove()
256 	cancel_work_sync(&data->work);  in yogabook_remove()
258 	if (!test_bit(YB_KBD_IS_ON, &data->flags))  in yogabook_remove()
259 		r |= device_reprobe(data->kbd_dev);  in yogabook_remove()
261 	if (!test_bit(YB_DIGITIZER_IS_ON, &data->flags))  in yogabook_remove()
262 		r |= device_reprobe(data->dig_dev);  in yogabook_remove()
265 		dev_warn(data->dev, "Reprobe of devices failed\n");  in yogabook_remove()
272 	set_bit(YB_SUSPENDED, &data->flags);  in yogabook_suspend()
273 	flush_work(&data->work);  in yogabook_suspend()
275 	if (test_bit(YB_KBD_IS_ON, &data->flags))  in yogabook_suspend()
276 		data->set_kbd_backlight(data, 0);  in yogabook_suspend()
285 	if (test_bit(YB_KBD_IS_ON, &data->flags))  in yogabook_resume()
286 		data->set_kbd_backlight(data, data->brightness);  in yogabook_resume()
288 	clear_bit(YB_SUSPENDED, &data->flags);  in yogabook_resume()
291 	schedule_work(&data->work);  in yogabook_resume()
301  * To control keyboard backlight, call the method KBLC() of the TCS1 ACPI
312 	dev_dbg(data->dev, "Set KBLC level to %u\n", level);  in yogabook_wmi_set_kbd_backlight()
315 	acpi_device_set_power(data->kbd_adev, ACPI_STATE_D0);  in yogabook_wmi_set_kbd_backlight()
321 	param.integer.value = YB_KBD_BL_MAX - level;  in yogabook_wmi_set_kbd_backlight()
323 	status = acpi_evaluate_object(acpi_device_handle(data->kbd_adev), "KBLC",  in yogabook_wmi_set_kbd_backlight()
326 		dev_err(data->dev, "Failed to call KBLC method: 0x%x\n", status);  in yogabook_wmi_set_kbd_backlight()
336 	struct device *dev = &wdev->dev;  in yogabook_wmi_probe()
342 		return -ENOMEM;  in yogabook_wmi_probe()
344 	data->kbd_adev = acpi_dev_get_first_match_dev("GDIX1001", NULL, -1);  in yogabook_wmi_probe()
345 	if (!data->kbd_adev)  in yogabook_wmi_probe()
346 		return dev_err_probe(dev, -ENODEV, "Cannot find the touchpad device in ACPI tables\n");  in yogabook_wmi_probe()
348 	data->dig_adev = acpi_dev_get_first_match_dev("WCOM0019", NULL, -1);  in yogabook_wmi_probe()
349 	if (!data->dig_adev) {  in yogabook_wmi_probe()
350 		r = dev_err_probe(dev, -ENODEV, "Cannot find the digitizer device in ACPI tables\n");  in yogabook_wmi_probe()
354 	data->kbd_dev = get_device(acpi_get_first_physical_node(data->kbd_adev));  in yogabook_wmi_probe()
355 	if (!data->kbd_dev || !data->kbd_dev->driver) {  in yogabook_wmi_probe()
356 		r = -EPROBE_DEFER;  in yogabook_wmi_probe()
360 	data->dig_dev = get_device(acpi_get_first_physical_node(data->dig_adev));  in yogabook_wmi_probe()
361 	if (!data->dig_dev || !data->dig_dev->driver) {  in yogabook_wmi_probe()
362 		r = -EPROBE_DEFER;  in yogabook_wmi_probe()
366 	data->set_kbd_backlight = yogabook_wmi_set_kbd_backlight;  in yogabook_wmi_probe()
375 	put_device(data->dig_dev);  in yogabook_wmi_probe()
376 	put_device(data->kbd_dev);  in yogabook_wmi_probe()
377 	acpi_dev_put(data->dig_adev);  in yogabook_wmi_probe()
378 	acpi_dev_put(data->kbd_adev);  in yogabook_wmi_probe()
384 	struct yogabook_data *data = dev_get_drvdata(&wdev->dev);  in yogabook_wmi_remove()
388 	put_device(data->dig_dev);  in yogabook_wmi_remove()
389 	put_device(data->kbd_dev);  in yogabook_wmi_remove()
390 	acpi_dev_put(data->dig_adev);  in yogabook_wmi_remove()
391 	acpi_dev_put(data->kbd_adev);  in yogabook_wmi_remove()
396 	yogabook_toggle_digitizer_mode(dev_get_drvdata(&wdev->dev));  in yogabook_wmi_notify()
409 		.name = "yogabook-wmi",
438 	pwm_apply_might_sleep(data->kbd_bl_pwm, &state);  in yogabook_pdev_set_kbd_backlight()
439 	gpiod_set_value(data->kbd_bl_led_enable, level ? 1 : 0);  in yogabook_pdev_set_kbd_backlight()
451 	struct device *dev = &pdev->dev;  in yogabook_pdev_probe()
457 		return -ENOMEM;  in yogabook_pdev_probe()
459 	data->kbd_dev = bus_find_device_by_name(&i2c_bus_type, NULL, "i2c-goodix_ts");  in yogabook_pdev_probe()
460 	if (!data->kbd_dev || !data->kbd_dev->driver) {  in yogabook_pdev_probe()
461 		r = -EPROBE_DEFER;  in yogabook_pdev_probe()
465 	data->dig_dev = bus_find_device_by_name(&i2c_bus_type, NULL, "i2c-wacom");  in yogabook_pdev_probe()
466 	if (!data->dig_dev || !data->dig_dev->driver) {  in yogabook_pdev_probe()
467 		r = -EPROBE_DEFER;  in yogabook_pdev_probe()
472 	data->pen_touch_event = devm_gpiod_get(dev, "pen_touch_event", GPIOD_IN);  in yogabook_pdev_probe()
473 	data->kbd_bl_led_enable = devm_gpiod_get(dev, "enable_keyboard_led", GPIOD_OUT_HIGH);  in yogabook_pdev_probe()
476 	if (IS_ERR(data->pen_touch_event)) {  in yogabook_pdev_probe()
477 		r = dev_err_probe(dev, PTR_ERR(data->pen_touch_event),  in yogabook_pdev_probe()
482 	if (IS_ERR(data->kbd_bl_led_enable)) {  in yogabook_pdev_probe()
483 		r = dev_err_probe(dev, PTR_ERR(data->kbd_bl_led_enable),  in yogabook_pdev_probe()
488 	data->kbd_bl_pwm = devm_pwm_get(dev, "pwm_soc_lpss_2");  in yogabook_pdev_probe()
489 	if (IS_ERR(data->kbd_bl_pwm)) {  in yogabook_pdev_probe()
490 		r = dev_err_probe(dev, PTR_ERR(data->kbd_bl_pwm),  in yogabook_pdev_probe()
491 				  "Getting keyboard backlight PWM\n");  in yogabook_pdev_probe()
495 	r = gpiod_to_irq(data->pen_touch_event);  in yogabook_pdev_probe()
500 	data->pen_touch_irq = r;  in yogabook_pdev_probe()
502 	r = request_irq(data->pen_touch_irq, yogabook_pen_touch_irq, IRQF_TRIGGER_FALLING,  in yogabook_pdev_probe()
509 	data->set_kbd_backlight = yogabook_pdev_set_kbd_backlight;  in yogabook_pdev_probe()
518 	free_irq(data->pen_touch_irq, data);  in yogabook_pdev_probe()
519 	cancel_work_sync(&data->work);  in yogabook_pdev_probe()
521 	put_device(data->dig_dev);  in yogabook_pdev_probe()
522 	put_device(data->kbd_dev);  in yogabook_pdev_probe()
531 	free_irq(data->pen_touch_irq, data);  in yogabook_pdev_remove()
532 	cancel_work_sync(&data->work);  in yogabook_pdev_remove()
533 	put_device(data->dig_dev);  in yogabook_pdev_remove()
534 	put_device(data->kbd_dev);  in yogabook_pdev_remove()