1 // SPDX-License-Identifier: GPL-2.0-or-later
10  * Implementation inspired by existing x86 platform drivers.
33 #define DRIVER_NAME "samsung-galaxybook"
36 	struct platform_device *platform;  member
81 #define GB_ATTR_LANGUAGE_CODE "en_US.UTF-8"
173 /* guid 8246028d-8bca-4a55-ba0f-6f1e6b921b8f */
236 	status = acpi_evaluate_object_typed(galaxybook->acpi->handle, method, &input, &output,  in galaxybook_acpi_method()
240 		dev_err(&galaxybook->acpi->dev, "failed to execute method %s; got %s\n",  in galaxybook_acpi_method()
242 		return -EIO;  in galaxybook_acpi_method()
247 	if (out_obj->buffer.length != len || out_obj->buffer.length < GB_SAWB_GB_GUNM_POS + 1) {  in galaxybook_acpi_method()
248 		dev_err(&galaxybook->acpi->dev,  in galaxybook_acpi_method()
251 		err = -EPROTO;  in galaxybook_acpi_method()
254 	if (out_obj->buffer.pointer[GB_SAWB_RFLG_POS] != GB_RFLG_SUCCESS) {  in galaxybook_acpi_method()
255 		dev_err(&galaxybook->acpi->dev,  in galaxybook_acpi_method()
258 		err = -ENXIO;  in galaxybook_acpi_method()
261 	if (out_obj->buffer.pointer[GB_SAWB_GB_GUNM_POS] == GB_GUNM_FAIL) {  in galaxybook_acpi_method()
262 		dev_err(&galaxybook->acpi->dev,  in galaxybook_acpi_method()
265 		err = -ENXIO;  in galaxybook_acpi_method()
269 	memcpy(buf, out_obj->buffer.pointer, len);  in galaxybook_acpi_method()
294 		return -ENODEV;  in galaxybook_enable_acpi_feature()
367 	err = devm_mutex_init(&galaxybook->platform->dev, &galaxybook->kbd_backlight_lock);  in galaxybook_kbd_backlight_init()
373 		dev_dbg(&galaxybook->platform->dev,  in galaxybook_kbd_backlight_init()
380 		dev_dbg(&galaxybook->platform->dev,  in galaxybook_kbd_backlight_init()
389 	galaxybook->kbd_backlight.brightness_get = kbd_backlight_show;  in galaxybook_kbd_backlight_init()
390 	galaxybook->kbd_backlight.brightness_set_blocking = kbd_backlight_store;  in galaxybook_kbd_backlight_init()
391 	galaxybook->kbd_backlight.flags = LED_BRIGHT_HW_CHANGED;  in galaxybook_kbd_backlight_init()
392 	galaxybook->kbd_backlight.max_brightness = GB_KBD_BACKLIGHT_MAX_BRIGHTNESS;  in galaxybook_kbd_backlight_init()
394 	return devm_led_classdev_register_ext(&galaxybook->platform->dev,  in galaxybook_kbd_backlight_init()
395 					      &galaxybook->kbd_backlight, &init_data);  in galaxybook_kbd_backlight_init()
448 		return -EINVAL;  in galaxybook_battery_ext_property_get()
450 	err = charge_control_end_threshold_acpi_get(galaxybook, (u8 *)&val->intval);  in galaxybook_battery_ext_property_get()
458 	if (val->intval == 0)  in galaxybook_battery_ext_property_get()
459 		val->intval = 100;  in galaxybook_battery_ext_property_get()
474 		return -EINVAL;  in galaxybook_battery_ext_property_set()
476 	value = val->intval;  in galaxybook_battery_ext_property_set()
479 		return -EINVAL;  in galaxybook_battery_ext_property_set()
521 					       &battery->dev, galaxybook);  in galaxybook_battery_add()
537 		dev_dbg(&galaxybook->platform->dev,  in galaxybook_battery_threshold_init()
542 	galaxybook->battery_hook.add_battery = galaxybook_battery_add;  in galaxybook_battery_threshold_init()
543 	galaxybook->battery_hook.remove_battery = galaxybook_battery_remove;  in galaxybook_battery_threshold_init()
544 	galaxybook->battery_hook.name = "Samsung Galaxy Book Battery Extension";  in galaxybook_battery_threshold_init()
546 	return devm_battery_hook_register(&galaxybook->platform->dev, &galaxybook->battery_hook);  in galaxybook_battery_threshold_init()
550  * Platform Profile / Performance mode
612 		return -EOPNOTSUPP;  in get_performance_mode_profile()
614 		dev_warn(&galaxybook->platform->dev,  in get_performance_mode_profile()
616 		return -EOPNOTSUPP;  in get_performance_mode_profile()
642 					 galaxybook->profile_performance_modes[profile]);  in galaxybook_platform_profile_set()
648 	u8 *perfmodes = galaxybook->profile_performance_modes;  in galaxybook_platform_profile_probe()
663 		dev_dbg(&galaxybook->platform->dev,  in galaxybook_platform_profile_probe()
677 	 * list after this (iob1-iobX). Loop through the supported values and  in galaxybook_platform_profile_probe()
679 	 * values along the way if a non-legacy value exists.  in galaxybook_platform_profile_probe()
684 			dev_dbg(&galaxybook->platform->dev,  in galaxybook_platform_profile_probe()
704 		dev_dbg(&galaxybook->platform->dev,  in galaxybook_platform_profile_probe()
705 			"setting platform profile %d to use performance mode 0x%x\n",  in galaxybook_platform_profile_probe()
730 		dev_dbg(&galaxybook->platform->dev,  in galaxybook_platform_profile_init()
735 	platform_profile_dev = devm_platform_profile_register(&galaxybook->platform->dev,  in galaxybook_platform_profile_init()
773 	lockdep_assert_held(&galaxybook->fw_attr_lock);  in power_on_lid_open_acpi_set()
811 	lockdep_assert_held(&galaxybook->fw_attr_lock);  in usb_charging_acpi_set()
847 	lockdep_assert_held(&galaxybook->fw_attr_lock);  in block_recording_acpi_set()
859 	input_report_switch(galaxybook->camera_lens_cover_switch,  in block_recording_acpi_set()
861 	input_sync(galaxybook->camera_lens_cover_switch);  in block_recording_acpi_set()
873 		dev_dbg(&galaxybook->platform->dev,  in galaxybook_block_recording_init()
878 	guard(mutex)(&galaxybook->fw_attr_lock);  in galaxybook_block_recording_init()
882 		dev_dbg(&galaxybook->platform->dev,  in galaxybook_block_recording_init()
887 	galaxybook->camera_lens_cover_switch =  in galaxybook_block_recording_init()
888 		devm_input_allocate_device(&galaxybook->platform->dev);  in galaxybook_block_recording_init()
889 	if (!galaxybook->camera_lens_cover_switch)  in galaxybook_block_recording_init()
890 		return -ENOMEM;  in galaxybook_block_recording_init()
892 	galaxybook->camera_lens_cover_switch->name = "Samsung Galaxy Book Camera Lens Cover";  in galaxybook_block_recording_init()
893 	galaxybook->camera_lens_cover_switch->phys = DRIVER_NAME "/input0";  in galaxybook_block_recording_init()
894 	galaxybook->camera_lens_cover_switch->id.bustype = BUS_HOST;  in galaxybook_block_recording_init()
896 	input_set_capability(galaxybook->camera_lens_cover_switch, EV_SW, SW_CAMERA_LENS_COVER);  in galaxybook_block_recording_init()
898 	err = input_register_device(galaxybook->camera_lens_cover_switch);  in galaxybook_block_recording_init()
902 	input_report_switch(galaxybook->camera_lens_cover_switch,  in galaxybook_block_recording_init()
904 	input_sync(galaxybook->camera_lens_cover_switch);  in galaxybook_block_recording_init()
946 	return sysfs_emit(buf, "%s\n", galaxybook_fw_attr_desc[fw_attr->fw_attr_id]);  in display_name_show()
956 	err = fw_attr->get_value(fw_attr->galaxybook, &value);  in current_value_show()
968 	struct samsung_galaxybook *galaxybook = fw_attr->galaxybook;  in current_value_store()
973 		return -EINVAL;  in current_value_store()
979 	guard(mutex)(&galaxybook->fw_attr_lock);  in current_value_store()
981 	err = fw_attr->set_value(galaxybook, value);  in current_value_store()
1000 	fw_attr = devm_kzalloc(&galaxybook->platform->dev, sizeof(*fw_attr), GFP_KERNEL);  in galaxybook_fw_attr_init()
1002 		return -ENOMEM;  in galaxybook_fw_attr_init()
1004 	attrs = devm_kcalloc(&galaxybook->platform->dev, NUM_FW_ATTR_ENUM_ATTRS + 1,  in galaxybook_fw_attr_init()
1007 		return -ENOMEM;  in galaxybook_fw_attr_init()
1014 	sysfs_attr_init(&fw_attr->display_name.attr);  in galaxybook_fw_attr_init()
1015 	fw_attr->display_name.attr.name = "display_name";  in galaxybook_fw_attr_init()
1016 	fw_attr->display_name.attr.mode = 0444;  in galaxybook_fw_attr_init()
1017 	fw_attr->display_name.show = display_name_show;  in galaxybook_fw_attr_init()
1018 	attrs[4] = &fw_attr->display_name.attr;  in galaxybook_fw_attr_init()
1020 	sysfs_attr_init(&fw_attr->current_value.attr);  in galaxybook_fw_attr_init()
1021 	fw_attr->current_value.attr.name = "current_value";  in galaxybook_fw_attr_init()
1022 	fw_attr->current_value.attr.mode = 0644;  in galaxybook_fw_attr_init()
1023 	fw_attr->current_value.show = current_value_show;  in galaxybook_fw_attr_init()
1024 	fw_attr->current_value.store = current_value_store;  in galaxybook_fw_attr_init()
1025 	attrs[5] = &fw_attr->current_value.attr;  in galaxybook_fw_attr_init()
1029 	fw_attr->galaxybook = galaxybook;  in galaxybook_fw_attr_init()
1030 	fw_attr->fw_attr_id = fw_attr_id;  in galaxybook_fw_attr_init()
1031 	fw_attr->attr_group.name = galaxybook_fw_attr_name[fw_attr_id];  in galaxybook_fw_attr_init()
1032 	fw_attr->attr_group.attrs = attrs;  in galaxybook_fw_attr_init()
1033 	fw_attr->get_value = get_value;  in galaxybook_fw_attr_init()
1034 	fw_attr->set_value = set_value;  in galaxybook_fw_attr_init()
1036 	return sysfs_create_group(&galaxybook->fw_attrs_kset->kobj, &fw_attr->attr_group);  in galaxybook_fw_attr_init()
1039 static void galaxybook_kset_unregister(void *data)  in galaxybook_kset_unregister()  argument
1041 	struct kset *kset = data;  in galaxybook_kset_unregister()
1046 static void galaxybook_fw_attrs_dev_unregister(void *data)  in galaxybook_fw_attrs_dev_unregister()  argument
1048 	struct device *fw_attrs_dev = data;  in galaxybook_fw_attrs_dev_unregister()
1058 	err = devm_mutex_init(&galaxybook->platform->dev, &galaxybook->fw_attr_lock);  in galaxybook_fw_attrs_init()
1062 	galaxybook->fw_attrs_dev = device_create(&firmware_attributes_class, NULL, MKDEV(0, 0),  in galaxybook_fw_attrs_init()
1064 	if (IS_ERR(galaxybook->fw_attrs_dev))  in galaxybook_fw_attrs_init()
1065 		return PTR_ERR(galaxybook->fw_attrs_dev);  in galaxybook_fw_attrs_init()
1067 	err = devm_add_action_or_reset(&galaxybook->platform->dev,  in galaxybook_fw_attrs_init()
1069 				       galaxybook->fw_attrs_dev);  in galaxybook_fw_attrs_init()
1073 	galaxybook->fw_attrs_kset = kset_create_and_add("attributes", NULL,  in galaxybook_fw_attrs_init()
1074 							&galaxybook->fw_attrs_dev->kobj);  in galaxybook_fw_attrs_init()
1075 	if (!galaxybook->fw_attrs_kset)  in galaxybook_fw_attrs_init()
1076 		return -ENOMEM;  in galaxybook_fw_attrs_init()
1077 	err = devm_add_action_or_reset(&galaxybook->platform->dev,  in galaxybook_fw_attrs_init()
1078 				       galaxybook_kset_unregister, galaxybook->fw_attrs_kset);  in galaxybook_fw_attrs_init()
1108 	galaxybook->has_block_recording = true;  in galaxybook_fw_attrs_init()
1127 	guard(mutex)(&galaxybook->kbd_backlight_lock);  in galaxybook_kbd_backlight_hotkey_work()
1129 	brightness = galaxybook->kbd_backlight.brightness;  in galaxybook_kbd_backlight_hotkey_work()
1130 	if (brightness < galaxybook->kbd_backlight.max_brightness)  in galaxybook_kbd_backlight_hotkey_work()
1135 	err = led_set_brightness_sync(&galaxybook->kbd_backlight, brightness);  in galaxybook_kbd_backlight_hotkey_work()
1137 		dev_err(&galaxybook->platform->dev,  in galaxybook_kbd_backlight_hotkey_work()
1142 	led_classdev_notify_brightness_hw_changed(&galaxybook->kbd_backlight, brightness);  in galaxybook_kbd_backlight_hotkey_work()
1152 	guard(mutex)(&galaxybook->fw_attr_lock);  in galaxybook_block_recording_hotkey_work()
1156 		dev_err(&galaxybook->platform->dev,  in galaxybook_block_recording_hotkey_work()
1163 		dev_err(&galaxybook->platform->dev,  in galaxybook_block_recording_hotkey_work()
1167 static bool galaxybook_i8042_filter(unsigned char data, unsigned char str, struct serio *port,  in galaxybook_i8042_filter()  argument
1176 	if (data == 0xe0) {  in galaxybook_i8042_filter()
1181 		switch (data) {  in galaxybook_i8042_filter()
1185 			if (galaxybook->has_kbd_backlight)  in galaxybook_i8042_filter()
1186 				schedule_work(&galaxybook->kbd_backlight_hotkey_work);  in galaxybook_i8042_filter()
1192 			if (galaxybook->has_block_recording)  in galaxybook_i8042_filter()
1193 				schedule_work(&galaxybook->block_recording_hotkey_work);  in galaxybook_i8042_filter()
1204 			 * with the next non-filtered byte.  in galaxybook_i8042_filter()
1214 static void galaxybook_i8042_filter_remove(void *data)  in galaxybook_i8042_filter_remove()  argument
1216 	struct samsung_galaxybook *galaxybook = data;  in galaxybook_i8042_filter_remove()
1219 	cancel_work_sync(&galaxybook->kbd_backlight_hotkey_work);  in galaxybook_i8042_filter_remove()
1220 	cancel_work_sync(&galaxybook->block_recording_hotkey_work);  in galaxybook_i8042_filter_remove()
1227 	if (!galaxybook->has_kbd_backlight && !galaxybook->has_block_recording)  in galaxybook_i8042_filter_install()
1230 	INIT_WORK(&galaxybook->kbd_backlight_hotkey_work,  in galaxybook_i8042_filter_install()
1232 	INIT_WORK(&galaxybook->block_recording_hotkey_work,  in galaxybook_i8042_filter_install()
1239 	return devm_add_action_or_reset(&galaxybook->platform->dev,  in galaxybook_i8042_filter_install()
1247 static void galaxybook_acpi_notify(acpi_handle handle, u32 event, void *data)  in galaxybook_acpi_notify()  argument
1249 	struct samsung_galaxybook *galaxybook = data;  in galaxybook_acpi_notify()
1257 		if (galaxybook->has_performance_mode)  in galaxybook_acpi_notify()
1261 		dev_warn(&galaxybook->platform->dev,  in galaxybook_acpi_notify()
1265 	acpi_bus_generate_netlink_event(DRIVER_NAME, dev_name(&galaxybook->platform->dev),  in galaxybook_acpi_notify()
1287 static void galaxybook_acpi_remove_notify_handler(void *data)  in galaxybook_acpi_remove_notify_handler()  argument
1289 	struct samsung_galaxybook *galaxybook = data;  in galaxybook_acpi_remove_notify_handler()
1291 	acpi_remove_notify_handler(galaxybook->acpi->handle, ACPI_ALL_NOTIFY,  in galaxybook_acpi_remove_notify_handler()
1295 static void galaxybook_acpi_disable(void *data)  in galaxybook_acpi_disable()  argument
1297 	struct samsung_galaxybook *galaxybook = data;  in galaxybook_acpi_disable()
1299 	acpi_execute_simple_method(galaxybook->acpi->handle,  in galaxybook_acpi_disable()
1308 	status = acpi_execute_simple_method(galaxybook->acpi->handle, GB_ACPI_METHOD_ENABLE,  in galaxybook_acpi_init()
1311 		return -EIO;  in galaxybook_acpi_init()
1312 	err = devm_add_action_or_reset(&galaxybook->platform->dev,  in galaxybook_acpi_init()
1317 	status = acpi_install_notify_handler(galaxybook->acpi->handle, ACPI_ALL_NOTIFY,  in galaxybook_acpi_init()
1320 		return -EIO;  in galaxybook_acpi_init()
1321 	err = devm_add_action_or_reset(&galaxybook->platform->dev,  in galaxybook_acpi_init()
1328 		dev_dbg(&galaxybook->platform->dev, "failed to enable ACPI notifications; "  in galaxybook_acpi_init()
1333 		dev_dbg(&galaxybook->platform->dev,  in galaxybook_acpi_init()
1341  * Platform driver
1346 	struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);  in galaxybook_probe()
1351 		return -ENODEV;  in galaxybook_probe()
1353 	galaxybook = devm_kzalloc(&pdev->dev, sizeof(*galaxybook), GFP_KERNEL);  in galaxybook_probe()
1355 		return -ENOMEM;  in galaxybook_probe()
1357 	galaxybook->platform = pdev;  in galaxybook_probe()
1358 	galaxybook->acpi = adev;  in galaxybook_probe()
1363 	 * - GB_SASB_POWER_MANAGEMENT (including performance mode)  in galaxybook_probe()
1364 	 * - GB_SASB_KBD_BACKLIGHT  in galaxybook_probe()
1365 	 * - GB_SASB_BLOCK_RECORDING (as part of fw_attrs init)  in galaxybook_probe()
1370 		return dev_err_probe(&galaxybook->platform->dev, err,  in galaxybook_probe()
1375 		galaxybook->has_performance_mode = true;  in galaxybook_probe()
1377 		return dev_err_probe(&galaxybook->platform->dev, err,  in galaxybook_probe()
1378 				     "failed to initialize platform profile\n");  in galaxybook_probe()
1382 		return dev_err_probe(&galaxybook->platform->dev, err,  in galaxybook_probe()
1387 		galaxybook->has_kbd_backlight = true;  in galaxybook_probe()
1389 		return dev_err_probe(&galaxybook->platform->dev, err,  in galaxybook_probe()
1394 		return dev_err_probe(&galaxybook->platform->dev, err,  in galaxybook_probe()
1395 				     "failed to initialize firmware-attributes\n");  in galaxybook_probe()
1399 		return dev_err_probe(&galaxybook->platform->dev, err,  in galaxybook_probe()