1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*-*-linux-c-*-*/
10     Adrian Yee <brewt-[email protected]>
12   Templated from msi-laptop.c and thinkpad_acpi.c which is copyright
18  * fujitsu-laptop.c - Fujitsu laptop support, providing access to additional
22  * This driver implements a vendor-specific backlight control interface for
27  * P8010.  It should work on most P-series and S-series Lifebooks, but
31  * brightness controls which are used by different Fujitsu laptops.  In most
47 #include <linux/input/sparse-keymap.h>
61 #define ACPI_FUJITSU_BL_DRIVER_NAME	"Fujitsu laptop FUJ02B1 ACPI brightness driver"
69 /* FUNC interface - command values */
75 /* FUNC interface - responses */
78 /* FUNC interface - status flags */
86 /* FUNC interface - LED control */
96 /* FUNC interface - backlight power control */
101 /* FUNC interface - battery control interface */
117 static int use_alt_lcd_levels = -1;
160 	status = acpi_evaluate_integer(device->handle, "FUNC", &arg_list,  in call_fext_func()
163 		acpi_handle_err(device->handle, "Failed to evaluate FUNC\n");  in call_fext_func()
164 		return -ENODEV;  in call_fext_func()
167 	acpi_handle_debug(device->handle,  in call_fext_func()
186 		return -EINVAL;  in charge_control_end_threshold_store()
198 		return -EINVAL;  in charge_control_end_threshold_store()
223 	return device_create_file(&battery->dev,  in fujitsu_battery_add_hook()
230 	device_remove_file(&battery->dev,  in fujitsu_battery_remove_hook()
251 	priv->charge_control_supported = false;  in fujitsu_battery_charge_control_add()
261 		return -ENODEV;  in fujitsu_battery_charge_control_add()
263 	priv->charge_control_supported = true;  in fujitsu_battery_charge_control_add()
273 	if (priv->charge_control_supported)  in fujitsu_battery_charge_control_remove()
277 /* Hardware access for LCD brightness control */
279 static int set_lcd_level(struct acpi_device *device, int level)  in set_lcd_level()  argument
286 	case -1:  in set_lcd_level()
287 		if (acpi_has_method(device->handle, "SBL2"))  in set_lcd_level()
300 	acpi_handle_debug(device->handle, "set lcd level via %s [%d]\n", method,  in set_lcd_level()
301 			  level);  in set_lcd_level()
303 	if (level < 0 || level >= priv->max_brightness)  in set_lcd_level()
304 		return -EINVAL;  in set_lcd_level()
306 	status = acpi_execute_simple_method(device->handle, method, level);  in set_lcd_level()
308 		acpi_handle_err(device->handle, "Failed to evaluate %s\n",  in set_lcd_level()
310 		return -ENODEV;  in set_lcd_level()
313 	priv->brightness_level = level;  in set_lcd_level()
324 	acpi_handle_debug(device->handle, "get lcd level via GBLL\n");  in get_lcd_level()
326 	status = acpi_evaluate_integer(device->handle, "GBLL", NULL, &state);  in get_lcd_level()
330 	priv->brightness_level = state & 0x0fffffff;  in get_lcd_level()
332 	return priv->brightness_level;  in get_lcd_level()
341 	acpi_handle_debug(device->handle, "get max lcd level via RBLL\n");  in get_max_brightness()
343 	status = acpi_evaluate_integer(device->handle, "RBLL", NULL, &state);  in get_max_brightness()
345 		return -1;  in get_max_brightness()
347 	priv->max_brightness = state;  in get_max_brightness()
349 	return priv->max_brightness;  in get_max_brightness()
358 	return b->props.power == BACKLIGHT_POWER_OFF ? 0 : get_lcd_level(device);  in bl_get_brightness()
366 		if (b->props.power == BACKLIGHT_POWER_OFF)  in bl_update_status()
374 	return set_lcd_level(device, b->props.brightness);  in bl_update_status()
387 	if (!(priv->flags_supported & FLAG_LID))  in lid_show()
389 	if (priv->flags_state & FLAG_LID)  in lid_show()
400 	if (!(priv->flags_supported & FLAG_DOCK))  in dock_show()
402 	if (priv->flags_state & FLAG_DOCK)  in dock_show()
413 	if (!(priv->flags_supported & FLAG_RFKILL))  in radios_show()
415 	if (priv->flags_state & FLAG_RFKILL)  in radios_show()
438 		   .name = "fujitsu-laptop",
442 /* ACPI device for LCD brightness control */
455 	priv->input = devm_input_allocate_device(&device->dev);  in acpi_fujitsu_bl_input_setup()
456 	if (!priv->input)  in acpi_fujitsu_bl_input_setup()
457 		return -ENOMEM;  in acpi_fujitsu_bl_input_setup()
459 	snprintf(priv->phys, sizeof(priv->phys), "%s/video/input0",  in acpi_fujitsu_bl_input_setup()
462 	priv->input->name = acpi_device_name(device);  in acpi_fujitsu_bl_input_setup()
463 	priv->input->phys = priv->phys;  in acpi_fujitsu_bl_input_setup()
464 	priv->input->id.bustype = BUS_HOST;  in acpi_fujitsu_bl_input_setup()
465 	priv->input->id.product = 0x06;  in acpi_fujitsu_bl_input_setup()
467 	ret = sparse_keymap_setup(priv->input, keymap_backlight, NULL);  in acpi_fujitsu_bl_input_setup()
471 	return input_register_device(priv->input);  in acpi_fujitsu_bl_input_setup()
478 		.brightness = priv->brightness_level,  in fujitsu_backlight_register()
479 		.max_brightness = priv->max_brightness - 1,  in fujitsu_backlight_register()
484 	bd = devm_backlight_device_register(&device->dev, "fujitsu-laptop",  in fujitsu_backlight_register()
485 					    &device->dev, device,  in fujitsu_backlight_register()
490 	priv->bl_device = bd;  in fujitsu_backlight_register()
501 		return -ENODEV;  in acpi_fujitsu_bl_add()
503 	priv = devm_kzalloc(&device->dev, sizeof(*priv), GFP_KERNEL);  in acpi_fujitsu_bl_add()
505 		return -ENOMEM;  in acpi_fujitsu_bl_add()
510 	device->driver_data = priv;  in acpi_fujitsu_bl_add()
516 		priv->max_brightness = FUJITSU_LCD_N_LEVELS;  in acpi_fujitsu_bl_add()
526 /* Brightness notify */
534 		acpi_handle_info(device->handle, "unsupported event [0x%x]\n",  in acpi_fujitsu_bl_notify()
536 		sparse_keymap_report_event(priv->input, -1, 1, true);  in acpi_fujitsu_bl_notify()
540 	oldb = priv->brightness_level;  in acpi_fujitsu_bl_notify()
542 	newb = priv->brightness_level;  in acpi_fujitsu_bl_notify()
544 	acpi_handle_debug(device->handle,  in acpi_fujitsu_bl_notify()
545 			  "brightness button event [%i -> %i]\n", oldb, newb);  in acpi_fujitsu_bl_notify()
553 	sparse_keymap_report_event(priv->input, oldb < newb, 1, true);  in acpi_fujitsu_bl_notify()
591 	pr_info("Identified laptop model '%s'\n", id->ident);  in fujitsu_laptop_dmi_keymap_override()
592 	keymap = id->driver_data;  in fujitsu_laptop_dmi_keymap_override()
632 	priv->input = devm_input_allocate_device(&device->dev);  in acpi_fujitsu_laptop_input_setup()
633 	if (!priv->input)  in acpi_fujitsu_laptop_input_setup()
634 		return -ENOMEM;  in acpi_fujitsu_laptop_input_setup()
636 	snprintf(priv->phys, sizeof(priv->phys), "%s/input0",  in acpi_fujitsu_laptop_input_setup()
639 	priv->input->name = acpi_device_name(device);  in acpi_fujitsu_laptop_input_setup()
640 	priv->input->phys = priv->phys;  in acpi_fujitsu_laptop_input_setup()
641 	priv->input->id.bustype = BUS_HOST;  in acpi_fujitsu_laptop_input_setup()
644 	ret = sparse_keymap_setup(priv->input, keymap, NULL);  in acpi_fujitsu_laptop_input_setup()
648 	return input_register_device(priv->input);  in acpi_fujitsu_laptop_input_setup()
656 	priv->pf_device = platform_device_alloc("fujitsu-laptop", PLATFORM_DEVID_NONE);  in fujitsu_laptop_platform_add()
657 	if (!priv->pf_device)  in fujitsu_laptop_platform_add()
658 		return -ENOMEM;  in fujitsu_laptop_platform_add()
660 	platform_set_drvdata(priv->pf_device, priv);  in fujitsu_laptop_platform_add()
662 	ret = platform_device_add(priv->pf_device);  in fujitsu_laptop_platform_add()
666 	ret = sysfs_create_group(&priv->pf_device->dev.kobj,  in fujitsu_laptop_platform_add()
674 	platform_device_del(priv->pf_device);  in fujitsu_laptop_platform_add()
676 	platform_device_put(priv->pf_device);  in fujitsu_laptop_platform_add()
685 	sysfs_remove_group(&priv->pf_device->dev.kobj,  in fujitsu_laptop_platform_remove()
687 	platform_device_unregister(priv->pf_device);  in fujitsu_laptop_platform_remove()
691 			enum led_brightness brightness)  in logolamp_set()  argument
693 	struct acpi_device *device = to_acpi_device(cdev->dev->parent);  in logolamp_set()
697 	if (brightness < LED_HALF)  in logolamp_set()
700 	if (brightness < LED_FULL)  in logolamp_set()
712 	struct acpi_device *device = to_acpi_device(cdev->dev->parent);  in logolamp_get()
727 		       enum led_brightness brightness)  in kblamps_set()  argument
729 	struct acpi_device *device = to_acpi_device(cdev->dev->parent);  in kblamps_set()
731 	if (brightness >= LED_FULL)  in kblamps_set()
741 	struct acpi_device *device = to_acpi_device(cdev->dev->parent);  in kblamps_get()
742 	enum led_brightness brightness = LED_OFF;  in kblamps_get()  local
746 		brightness = LED_FULL;  in kblamps_get()
748 	return brightness;  in kblamps_get()
752 			 enum led_brightness brightness)  in radio_led_set()  argument
754 	struct acpi_device *device = to_acpi_device(cdev->dev->parent);  in radio_led_set()
756 	if (brightness >= LED_FULL)  in radio_led_set()
766 	struct acpi_device *device = to_acpi_device(cdev->dev->parent);  in radio_led_get()
767 	enum led_brightness brightness = LED_OFF;  in radio_led_get()  local
770 		brightness = LED_FULL;  in radio_led_get()
772 	return brightness;  in radio_led_get()
776 		       enum led_brightness brightness)  in eco_led_set()  argument
778 	struct acpi_device *device = to_acpi_device(cdev->dev->parent);  in eco_led_set()
782 	if (brightness >= LED_FULL)  in eco_led_set()
792 	struct acpi_device *device = to_acpi_device(cdev->dev->parent);  in eco_led_get()
793 	enum led_brightness brightness = LED_OFF;  in eco_led_get()  local
796 		brightness = LED_FULL;  in eco_led_get()
798 	return brightness;  in eco_led_get()
809 		led = devm_kzalloc(&device->dev, sizeof(*led), GFP_KERNEL);  in acpi_fujitsu_laptop_leds_register()
811 			return -ENOMEM;  in acpi_fujitsu_laptop_leds_register()
813 		led->name = "fujitsu::logolamp";  in acpi_fujitsu_laptop_leds_register()
814 		led->brightness_set_blocking = logolamp_set;  in acpi_fujitsu_laptop_leds_register()
815 		led->brightness_get = logolamp_get;  in acpi_fujitsu_laptop_leds_register()
816 		ret = devm_led_classdev_register(&device->dev, led);  in acpi_fujitsu_laptop_leds_register()
824 		led = devm_kzalloc(&device->dev, sizeof(*led), GFP_KERNEL);  in acpi_fujitsu_laptop_leds_register()
826 			return -ENOMEM;  in acpi_fujitsu_laptop_leds_register()
828 		led->name = "fujitsu::kblamps";  in acpi_fujitsu_laptop_leds_register()
829 		led->brightness_set_blocking = kblamps_set;  in acpi_fujitsu_laptop_leds_register()
830 		led->brightness_get = kblamps_get;  in acpi_fujitsu_laptop_leds_register()
831 		ret = devm_led_classdev_register(&device->dev, led);  in acpi_fujitsu_laptop_leds_register()
845 	if (priv->flags_supported & BIT(17)) {  in acpi_fujitsu_laptop_leds_register()
846 		led = devm_kzalloc(&device->dev, sizeof(*led), GFP_KERNEL);  in acpi_fujitsu_laptop_leds_register()
848 			return -ENOMEM;  in acpi_fujitsu_laptop_leds_register()
850 		led->name = "fujitsu::radio_led";  in acpi_fujitsu_laptop_leds_register()
851 		led->brightness_set_blocking = radio_led_set;  in acpi_fujitsu_laptop_leds_register()
852 		led->brightness_get = radio_led_get;  in acpi_fujitsu_laptop_leds_register()
853 		led->default_trigger = "rfkill-any";  in acpi_fujitsu_laptop_leds_register()
854 		ret = devm_led_classdev_register(&device->dev, led);  in acpi_fujitsu_laptop_leds_register()
867 		led = devm_kzalloc(&device->dev, sizeof(*led), GFP_KERNEL);  in acpi_fujitsu_laptop_leds_register()
869 			return -ENOMEM;  in acpi_fujitsu_laptop_leds_register()
871 		led->name = "fujitsu::eco_led";  in acpi_fujitsu_laptop_leds_register()
872 		led->brightness_set_blocking = eco_led_set;  in acpi_fujitsu_laptop_leds_register()
873 		led->brightness_get = eco_led_get;  in acpi_fujitsu_laptop_leds_register()
874 		ret = devm_led_classdev_register(&device->dev, led);  in acpi_fujitsu_laptop_leds_register()
887 	priv = devm_kzalloc(&device->dev, sizeof(*priv), GFP_KERNEL);  in acpi_fujitsu_laptop_add()
889 		return -ENOMEM;  in acpi_fujitsu_laptop_add()
896 	device->driver_data = priv;  in acpi_fujitsu_laptop_add()
899 	spin_lock_init(&priv->fifo_lock);  in acpi_fujitsu_laptop_add()
900 	ret = kfifo_alloc(&priv->fifo, RINGBUFFERSIZE * sizeof(int),  in acpi_fujitsu_laptop_add()
911 	acpi_handle_debug(device->handle, "Discarded %i ringbuffer entries\n",  in acpi_fujitsu_laptop_add()
914 	priv->flags_supported = call_fext_func(device, FUNC_FLAGS, 0x0, 0x0,  in acpi_fujitsu_laptop_add()
919 	if (priv->flags_supported == UNSUPPORTED_CMD)  in acpi_fujitsu_laptop_add()
920 		priv->flags_supported = 0;  in acpi_fujitsu_laptop_add()
922 	if (priv->flags_supported)  in acpi_fujitsu_laptop_add()
923 		priv->flags_state = call_fext_func(device, FUNC_FLAGS, 0x4, 0x0,  in acpi_fujitsu_laptop_add()
927 	acpi_handle_info(device->handle, "BTNI: [0x%x]\n",  in acpi_fujitsu_laptop_add()
931 	if (fujitsu_bl && fujitsu_bl->bl_device &&  in acpi_fujitsu_laptop_add()
935 			fujitsu_bl->bl_device->props.power = BACKLIGHT_POWER_OFF;  in acpi_fujitsu_laptop_add()
937 			fujitsu_bl->bl_device->props.power = BACKLIGHT_POWER_ON;  in acpi_fujitsu_laptop_add()
959 	kfifo_free(&priv->fifo);  in acpi_fujitsu_laptop_add()
972 	kfifo_free(&priv->fifo);  in acpi_fujitsu_laptop_remove()
980 	ret = kfifo_in_locked(&priv->fifo, (unsigned char *)&scancode,  in acpi_fujitsu_laptop_press()
981 			      sizeof(scancode), &priv->fifo_lock);  in acpi_fujitsu_laptop_press()
983 		dev_info(&priv->input->dev, "Could not push scancode [0x%x]\n",  in acpi_fujitsu_laptop_press()
987 	sparse_keymap_report_event(priv->input, scancode, 1, false);  in acpi_fujitsu_laptop_press()
988 	dev_dbg(&priv->input->dev, "Push scancode into ringbuffer [0x%x]\n",  in acpi_fujitsu_laptop_press()
998 		ret = kfifo_out_locked(&priv->fifo, (unsigned char *)&scancode,  in acpi_fujitsu_laptop_release()
999 				       sizeof(scancode), &priv->fifo_lock);  in acpi_fujitsu_laptop_release()
1002 		sparse_keymap_report_event(priv->input, scancode, 0, false);  in acpi_fujitsu_laptop_release()
1003 		dev_dbg(&priv->input->dev,  in acpi_fujitsu_laptop_release()
1016 		acpi_handle_info(device->handle, "Unsupported event [0x%x]\n",  in acpi_fujitsu_laptop_notify()
1018 		sparse_keymap_report_event(priv->input, -1, 1, true);  in acpi_fujitsu_laptop_notify()
1022 	if (priv->flags_supported)  in acpi_fujitsu_laptop_notify()
1023 		priv->flags_state = call_fext_func(device, FUNC_FLAGS, 0x4, 0x0,  in acpi_fujitsu_laptop_notify()
1030 		if (sparse_keymap_entry_from_scancode(priv->input, scancode))  in acpi_fujitsu_laptop_notify()
1035 			acpi_handle_info(device->handle,  in acpi_fujitsu_laptop_notify()
1040 	 * First seen on the Skylake-based Lifebook E736/E746/E756), the  in acpi_fujitsu_laptop_notify()
1045 	if (priv->flags_supported & (FLAG_SOFTKEYS)) {  in acpi_fujitsu_laptop_notify()
1049 			sparse_keymap_report_event(priv->input, BIT(i), 1, true);  in acpi_fujitsu_laptop_notify()
1140 MODULE_PARM_DESC(use_alt_lcd_levels, "Interface used for setting LCD brightness level (-1 = auto, 0…
1142 MODULE_PARM_DESC(disable_brightness_adjust, "Disable LCD brightness adjustment");