drivers/hid/hid-asus.c - linux - Git at Google

 /*
  *  HID driver for Asus notebook built-in keyboard.
  *  Fixes small logical maximum to match usage maximum.
  *
  *  Currently supported devices are:
  *    EeeBook X205TA
  *    VivoBook E200HA
  *
  *  Copyright (c) 2016 Yusuke Fujimaki <usk.fujimaki@gmail.com>
  *
  *  This module based on hid-ortek by
  *  Copyright (c) 2010 Johnathon Harris <jmharris@gmail.com>
  *  Copyright (c) 2011 Jiri Kosina
  *
  *  This module has been updated to add support for Asus i2c touchpad.
  *
  *  Copyright (c) 2016 Brendan McGrath <redmcg@redmandi.dyndns.org>
  *  Copyright (c) 2016 Victor Vlasenko <victor.vlasenko@sysgears.com>
  *  Copyright (c) 2016 Frederik Wenigwieser <frederik.wenigwieser@gmail.com>
  */

 /*
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the Free
  * Software Foundation; either version 2 of the License, or (at your option)
  * any later version.
  */

 #include <linux/hid.h>
 #include <linux/module.h>
 #include <linux/input/mt.h>

 #include "hid-ids.h"

 MODULE_AUTHOR("Yusuke Fujimaki <usk.fujimaki@gmail.com>");
 MODULE_AUTHOR("Brendan McGrath <redmcg@redmandi.dyndns.org>");
 MODULE_AUTHOR("Victor Vlasenko <victor.vlasenko@sysgears.com>");
 MODULE_AUTHOR("Frederik Wenigwieser <frederik.wenigwieser@gmail.com>");
 MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad");

 #define FEATURE_REPORT_ID 0x0d
 #define INPUT_REPORT_ID 0x5d

 #define INPUT_REPORT_SIZE 28

 #define MAX_CONTACTS 5

 #define MAX_X 2794
 #define MAX_Y 1758
 #define MAX_TOUCH_MAJOR 8
 #define MAX_PRESSURE 128

 #define CONTACT_DATA_SIZE 5

 #define BTN_LEFT_MASK 0x01
 #define CONTACT_TOOL_TYPE_MASK 0x80
 #define CONTACT_X_MSB_MASK 0xf0
 #define CONTACT_Y_MSB_MASK 0x0f
 #define CONTACT_TOUCH_MAJOR_MASK 0x07
 #define CONTACT_PRESSURE_MASK 0x7f

 #define QUIRK_FIX_NOTEBOOK_REPORT	BIT(0)
 #define QUIRK_NO_INIT_REPORTS		BIT(1)
 #define QUIRK_SKIP_INPUT_MAPPING	BIT(2)
 #define QUIRK_IS_MULTITOUCH		BIT(3)

 #define NOTEBOOK_QUIRKS			QUIRK_FIX_NOTEBOOK_REPORT
 #define TOUCHPAD_QUIRKS			(QUIRK_NO_INIT_REPORTS | \
 						 QUIRK_SKIP_INPUT_MAPPING | \
 						 QUIRK_IS_MULTITOUCH)

 #define TRKID_SGN       ((TRKID_MAX + 1) >> 1)

 struct asus_drvdata {
 	unsigned long quirks;
 	struct input_dev *input;
 };

 static void asus_report_contact_down(struct input_dev *input,
 		int toolType, u8 *data)
 {
 	int touch_major, pressure;
 	int x = (data[0] & CONTACT_X_MSB_MASK) << 4 | data[1];
 	int y = MAX_Y - ((data[0] & CONTACT_Y_MSB_MASK) << 8 | data[2]);

 	if (toolType == MT_TOOL_PALM) {
 		touch_major = MAX_TOUCH_MAJOR;
 		pressure = MAX_PRESSURE;
 	} else {
 		touch_major = (data[3] >> 4) & CONTACT_TOUCH_MAJOR_MASK;
 		pressure = data[4] & CONTACT_PRESSURE_MASK;
 	}

 	input_report_abs(input, ABS_MT_POSITION_X, x);
 	input_report_abs(input, ABS_MT_POSITION_Y, y);
 	input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major);
 	input_report_abs(input, ABS_MT_PRESSURE, pressure);
 }

 /* Required for Synaptics Palm Detection */
 static void asus_report_tool_width(struct input_dev *input)
 {
 	struct input_mt *mt = input->mt;
 	struct input_mt_slot *oldest;
 	int oldid, count, i;

 	oldest = NULL;
 	oldid = mt->trkid;
 	count = 0;

 	for (i = 0; i < mt->num_slots; ++i) {
 		struct input_mt_slot *ps = &mt->slots[i];
 		int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID);

 		if (id < 0)
 			continue;
 		if ((id - oldid) & TRKID_SGN) {
 			oldest = ps;
 			oldid = id;
 		}
 		count++;
 	}

 	if (oldest) {
 		input_report_abs(input, ABS_TOOL_WIDTH,
 			input_mt_get_value(oldest, ABS_MT_TOUCH_MAJOR));
 	}
 }

 static void asus_report_input(struct input_dev *input, u8 *data)
 {
 	int i;
 	u8 *contactData = data + 2;

 	for (i = 0; i < MAX_CONTACTS; i++) {
 		bool down = !!(data[1] & BIT(i+3));
 		int toolType = contactData[3] & CONTACT_TOOL_TYPE_MASK ?
 						MT_TOOL_PALM : MT_TOOL_FINGER;

 		input_mt_slot(input, i);
 		input_mt_report_slot_state(input, toolType, down);

 		if (down) {
 			asus_report_contact_down(input, toolType, contactData);
 			contactData += CONTACT_DATA_SIZE;
 		}
 	}

 	input_report_key(input, BTN_LEFT, data[1] & BTN_LEFT_MASK);
 	asus_report_tool_width(input);

 	input_mt_sync_frame(input);
 	input_sync(input);
 }

 static int asus_raw_event(struct hid_device *hdev,
 		struct hid_report *report, u8 *data, int size)
 {
 	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);

 	if (drvdata->quirks & QUIRK_IS_MULTITOUCH &&
 					 data[0] == INPUT_REPORT_ID &&
 						size == INPUT_REPORT_SIZE) {
 		asus_report_input(drvdata->input, data);
 		return 1;
 	}

 	return 0;
 }

 static int asus_input_configured(struct hid_device *hdev, struct hid_input *hi)
 {
 	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);

 	if (drvdata->quirks & QUIRK_IS_MULTITOUCH) {
 		int ret;
 		struct input_dev *input = hi->input;

 		input_set_abs_params(input, ABS_MT_POSITION_X, 0, MAX_X, 0, 0);
 		input_set_abs_params(input, ABS_MT_POSITION_Y, 0, MAX_Y, 0, 0);
 		input_set_abs_params(input, ABS_TOOL_WIDTH, 0, MAX_TOUCH_MAJOR, 0, 0);
 		input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, MAX_TOUCH_MAJOR, 0, 0);
 		input_set_abs_params(input, ABS_MT_PRESSURE, 0, MAX_PRESSURE, 0, 0);

 		__set_bit(BTN_LEFT, input->keybit);
 		__set_bit(INPUT_PROP_BUTTONPAD, input->propbit);

 		ret = input_mt_init_slots(input, MAX_CONTACTS, INPUT_MT_POINTER);

 		if (ret) {
 			hid_err(hdev, "Asus input mt init slots failed: %d\n", ret);
 			return ret;
 		}

 		drvdata->input = input;
 	}

 	return 0;
 }

 static int asus_input_mapping(struct hid_device *hdev,
 		struct hid_input *hi, struct hid_field *field,
 		struct hid_usage *usage, unsigned long **bit,
 		int *max)
 {
 	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);

 	if (drvdata->quirks & QUIRK_SKIP_INPUT_MAPPING) {
 		/* Don't map anything from the HID report.
 		 * We do it all manually in asus_input_configured
 		 */
 		return -1;
 	}

 	return 0;
 }

 static int asus_start_multitouch(struct hid_device *hdev)
 {
 	int ret;
 	const unsigned char buf[] = { FEATURE_REPORT_ID, 0x00, 0x03, 0x01, 0x00 };
 	unsigned char *dmabuf = kmemdup(buf, sizeof(buf), GFP_KERNEL);

 	if (!dmabuf) {
 		ret = -ENOMEM;
 		hid_err(hdev, "Asus failed to alloc dma buf: %d\n", ret);
 		return ret;
 	}

 	ret = hid_hw_raw_request(hdev, dmabuf[0], dmabuf, sizeof(buf),
 					HID_FEATURE_REPORT, HID_REQ_SET_REPORT);

 	kfree(dmabuf);

 	if (ret != sizeof(buf)) {
 		hid_err(hdev, "Asus failed to start multitouch: %d\n", ret);
 		return ret;
 	}

 	return 0;
 }

 static int __maybe_unused asus_reset_resume(struct hid_device *hdev)
 {
 	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);

 	if (drvdata->quirks & QUIRK_IS_MULTITOUCH)
 		return asus_start_multitouch(hdev);

 	return 0;
 }

 static int asus_probe(struct hid_device *hdev, const struct hid_device_id *id)
 {
 	int ret;
 	struct asus_drvdata *drvdata;

 	drvdata = devm_kzalloc(&hdev->dev, sizeof(*drvdata), GFP_KERNEL);
 	if (drvdata == NULL) {
 		hid_err(hdev, "Can't alloc Asus descriptor\n");
 		return -ENOMEM;
 	}

 	hid_set_drvdata(hdev, drvdata);

 	drvdata->quirks = id->driver_data;

 	if (drvdata->quirks & QUIRK_NO_INIT_REPORTS)
 		hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;

 	ret = hid_parse(hdev);
 	if (ret) {
 		hid_err(hdev, "Asus hid parse failed: %d\n", ret);
 		return ret;
 	}

 	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 	if (ret) {
 		hid_err(hdev, "Asus hw start failed: %d\n", ret);
 		return ret;
 	}

 	if (!drvdata->input) {
 		hid_err(hdev, "Asus input not registered\n");
 		ret = -ENOMEM;
 		goto err_stop_hw;
 	}

 	drvdata->input->name = "Asus TouchPad";

 	if (drvdata->quirks & QUIRK_IS_MULTITOUCH) {
 		ret = asus_start_multitouch(hdev);
 		if (ret)
 			goto err_stop_hw;
 	}

 	return 0;
 err_stop_hw:
 	hid_hw_stop(hdev);
 	return ret;
 }

 static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 		unsigned int *rsize)
 {
 	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);

 	if (drvdata->quirks & QUIRK_FIX_NOTEBOOK_REPORT &&
 			*rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x65) {
 		hid_info(hdev, "Fixing up Asus notebook report descriptor\n");
 		rdesc[55] = 0xdd;
 	}
 	return rdesc;
 }

 static const struct hid_device_id asus_devices[] = {
 	{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
 		 USB_DEVICE_ID_ASUSTEK_NOTEBOOK_KEYBOARD), NOTEBOOK_QUIRKS},
 	{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
 			 USB_DEVICE_ID_ASUSTEK_TOUCHPAD), TOUCHPAD_QUIRKS },
 	{ }
 };
 MODULE_DEVICE_TABLE(hid, asus_devices);

 static struct hid_driver asus_driver = {
 	.name			= "asus",
 	.id_table		= asus_devices,
 	.report_fixup		= asus_report_fixup,
 	.probe                  = asus_probe,
 	.input_mapping          = asus_input_mapping,
 	.input_configured       = asus_input_configured,
 #ifdef CONFIG_PM
 	.reset_resume           = asus_reset_resume,
 #endif
 	.raw_event		= asus_raw_event
 };
 module_hid_driver(asus_driver);

 MODULE_LICENSE("GPL");
	/*
	* HID driver for Asus notebook built-in keyboard.
	* Fixes small logical maximum to match usage maximum.
	*
	* Currently supported devices are:
	* EeeBook X205TA
	* VivoBook E200HA
	*
	* Copyright (c) 2016 Yusuke Fujimaki <usk.fujimaki@gmail.com>
	*
	* This module based on hid-ortek by
	* Copyright (c) 2010 Johnathon Harris <jmharris@gmail.com>
	* Copyright (c) 2011 Jiri Kosina
	*
	* This module has been updated to add support for Asus i2c touchpad.
	*
	* Copyright (c) 2016 Brendan McGrath <redmcg@redmandi.dyndns.org>
	* Copyright (c) 2016 Victor Vlasenko <victor.vlasenko@sysgears.com>
	* Copyright (c) 2016 Frederik Wenigwieser <frederik.wenigwieser@gmail.com>
	*/

	/*
	* This program is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License as published by the Free
	* Software Foundation; either version 2 of the License, or (at your option)
	* any later version.
	*/

	#include <linux/hid.h>
	#include <linux/module.h>
	#include <linux/input/mt.h>

	#include "hid-ids.h"

	MODULE_AUTHOR("Yusuke Fujimaki <usk.fujimaki@gmail.com>");
	MODULE_AUTHOR("Brendan McGrath <redmcg@redmandi.dyndns.org>");
	MODULE_AUTHOR("Victor Vlasenko <victor.vlasenko@sysgears.com>");
	MODULE_AUTHOR("Frederik Wenigwieser <frederik.wenigwieser@gmail.com>");
	MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad");

	#define FEATURE_REPORT_ID 0x0d
	#define INPUT_REPORT_ID 0x5d

	#define INPUT_REPORT_SIZE 28

	#define MAX_CONTACTS 5

	#define MAX_X 2794
	#define MAX_Y 1758
	#define MAX_TOUCH_MAJOR 8
	#define MAX_PRESSURE 128

	#define CONTACT_DATA_SIZE 5

	#define BTN_LEFT_MASK 0x01
	#define CONTACT_TOOL_TYPE_MASK 0x80
	#define CONTACT_X_MSB_MASK 0xf0
	#define CONTACT_Y_MSB_MASK 0x0f
	#define CONTACT_TOUCH_MAJOR_MASK 0x07
	#define CONTACT_PRESSURE_MASK 0x7f

	#define QUIRK_FIX_NOTEBOOK_REPORT BIT(0)
	#define QUIRK_NO_INIT_REPORTS BIT(1)
	#define QUIRK_SKIP_INPUT_MAPPING BIT(2)
	#define QUIRK_IS_MULTITOUCH BIT(3)

	#define NOTEBOOK_QUIRKS QUIRK_FIX_NOTEBOOK_REPORT
	#define TOUCHPAD_QUIRKS (QUIRK_NO_INIT_REPORTS \| \
	QUIRK_SKIP_INPUT_MAPPING \| \
	QUIRK_IS_MULTITOUCH)

	#define TRKID_SGN ((TRKID_MAX + 1) >> 1)

	struct asus_drvdata {
	unsigned long quirks;
	struct input_dev *input;
	};

	static void asus_report_contact_down(struct input_dev *input,
	int toolType, u8 *data)
	{
	int touch_major, pressure;
	int x = (data[0] & CONTACT_X_MSB_MASK) << 4 \| data[1];
	int y = MAX_Y - ((data[0] & CONTACT_Y_MSB_MASK) << 8 \| data[2]);

	if (toolType == MT_TOOL_PALM) {
	touch_major = MAX_TOUCH_MAJOR;
	pressure = MAX_PRESSURE;
	} else {
	touch_major = (data[3] >> 4) & CONTACT_TOUCH_MAJOR_MASK;
	pressure = data[4] & CONTACT_PRESSURE_MASK;
	}

	input_report_abs(input, ABS_MT_POSITION_X, x);
	input_report_abs(input, ABS_MT_POSITION_Y, y);
	input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major);
	input_report_abs(input, ABS_MT_PRESSURE, pressure);
	}

	/* Required for Synaptics Palm Detection */
	static void asus_report_tool_width(struct input_dev *input)
	{
	struct input_mt *mt = input->mt;
	struct input_mt_slot *oldest;
	int oldid, count, i;

	oldest = NULL;
	oldid = mt->trkid;
	count = 0;

	for (i = 0; i < mt->num_slots; ++i) {
	struct input_mt_slot *ps = &mt->slots[i];
	int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID);

	if (id < 0)
	continue;
	if ((id - oldid) & TRKID_SGN) {
	oldest = ps;
	oldid = id;
	}
	count++;
	}

	if (oldest) {
	input_report_abs(input, ABS_TOOL_WIDTH,
	input_mt_get_value(oldest, ABS_MT_TOUCH_MAJOR));
	}
	}

	static void asus_report_input(struct input_dev input, u8 data)
	{
	int i;
	u8 *contactData = data + 2;

	for (i = 0; i < MAX_CONTACTS; i++) {
	bool down = !!(data[1] & BIT(i+3));
	int toolType = contactData[3] & CONTACT_TOOL_TYPE_MASK ?
	MT_TOOL_PALM : MT_TOOL_FINGER;

	input_mt_slot(input, i);
	input_mt_report_slot_state(input, toolType, down);

	if (down) {
	asus_report_contact_down(input, toolType, contactData);
	contactData += CONTACT_DATA_SIZE;
	}
	}

	input_report_key(input, BTN_LEFT, data[1] & BTN_LEFT_MASK);
	asus_report_tool_width(input);

	input_mt_sync_frame(input);
	input_sync(input);
	}

	static int asus_raw_event(struct hid_device *hdev,
	struct hid_report report, u8 data, int size)
	{
	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);

	if (drvdata->quirks & QUIRK_IS_MULTITOUCH &&
	data[0] == INPUT_REPORT_ID &&
	size == INPUT_REPORT_SIZE) {
	asus_report_input(drvdata->input, data);
	return 1;
	}

	return 0;
	}

	static int asus_input_configured(struct hid_device hdev, struct hid_input hi)
	{
	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);

	if (drvdata->quirks & QUIRK_IS_MULTITOUCH) {
	int ret;
	struct input_dev *input = hi->input;

	input_set_abs_params(input, ABS_MT_POSITION_X, 0, MAX_X, 0, 0);
	input_set_abs_params(input, ABS_MT_POSITION_Y, 0, MAX_Y, 0, 0);
	input_set_abs_params(input, ABS_TOOL_WIDTH, 0, MAX_TOUCH_MAJOR, 0, 0);
	input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, MAX_TOUCH_MAJOR, 0, 0);
	input_set_abs_params(input, ABS_MT_PRESSURE, 0, MAX_PRESSURE, 0, 0);

	__set_bit(BTN_LEFT, input->keybit);
	__set_bit(INPUT_PROP_BUTTONPAD, input->propbit);

	ret = input_mt_init_slots(input, MAX_CONTACTS, INPUT_MT_POINTER);

	if (ret) {
	hid_err(hdev, "Asus input mt init slots failed: %d\n", ret);
	return ret;
	}

	drvdata->input = input;
	}

	return 0;
	}

	static int asus_input_mapping(struct hid_device *hdev,
	struct hid_input hi, struct hid_field field,
	struct hid_usage usage, unsigned long *bit,
	int *max)
	{
	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);

	if (drvdata->quirks & QUIRK_SKIP_INPUT_MAPPING) {
	/* Don't map anything from the HID report.
	* We do it all manually in asus_input_configured
	*/
	return -1;
	}

	return 0;
	}

	static int asus_start_multitouch(struct hid_device *hdev)
	{
	int ret;
	const unsigned char buf[] = { FEATURE_REPORT_ID, 0x00, 0x03, 0x01, 0x00 };
	unsigned char *dmabuf = kmemdup(buf, sizeof(buf), GFP_KERNEL);

	if (!dmabuf) {
	ret = -ENOMEM;
	hid_err(hdev, "Asus failed to alloc dma buf: %d\n", ret);
	return ret;
	}

	ret = hid_hw_raw_request(hdev, dmabuf[0], dmabuf, sizeof(buf),
	HID_FEATURE_REPORT, HID_REQ_SET_REPORT);

	kfree(dmabuf);

	if (ret != sizeof(buf)) {
	hid_err(hdev, "Asus failed to start multitouch: %d\n", ret);
	return ret;
	}

	return 0;
	}

	static int __maybe_unused asus_reset_resume(struct hid_device *hdev)
	{
	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);

	if (drvdata->quirks & QUIRK_IS_MULTITOUCH)
	return asus_start_multitouch(hdev);

	return 0;
	}

	static int asus_probe(struct hid_device hdev, const struct hid_device_id id)
	{
	int ret;
	struct asus_drvdata *drvdata;

	drvdata = devm_kzalloc(&hdev->dev, sizeof(*drvdata), GFP_KERNEL);
	if (drvdata == NULL) {
	hid_err(hdev, "Can't alloc Asus descriptor\n");
	return -ENOMEM;
	}

	hid_set_drvdata(hdev, drvdata);

	drvdata->quirks = id->driver_data;

	if (drvdata->quirks & QUIRK_NO_INIT_REPORTS)
	hdev->quirks \|= HID_QUIRK_NO_INIT_REPORTS;

	ret = hid_parse(hdev);
	if (ret) {
	hid_err(hdev, "Asus hid parse failed: %d\n", ret);
	return ret;
	}

	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
	if (ret) {
	hid_err(hdev, "Asus hw start failed: %d\n", ret);
	return ret;
	}

	if (!drvdata->input) {
	hid_err(hdev, "Asus input not registered\n");
	ret = -ENOMEM;
	goto err_stop_hw;
	}

	drvdata->input->name = "Asus TouchPad";

	if (drvdata->quirks & QUIRK_IS_MULTITOUCH) {
	ret = asus_start_multitouch(hdev);
	if (ret)
	goto err_stop_hw;
	}

	return 0;
	err_stop_hw:
	hid_hw_stop(hdev);
	return ret;
	}

	static __u8 asus_report_fixup(struct hid_device hdev, __u8 *rdesc,
	unsigned int *rsize)
	{
	struct asus_drvdata *drvdata = hid_get_drvdata(hdev);

	if (drvdata->quirks & QUIRK_FIX_NOTEBOOK_REPORT &&
	*rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x65) {
	hid_info(hdev, "Fixing up Asus notebook report descriptor\n");
	rdesc[55] = 0xdd;
	}
	return rdesc;
	}

	static const struct hid_device_id asus_devices[] = {
	{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
	USB_DEVICE_ID_ASUSTEK_NOTEBOOK_KEYBOARD), NOTEBOOK_QUIRKS},
	{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
	USB_DEVICE_ID_ASUSTEK_TOUCHPAD), TOUCHPAD_QUIRKS },
	{ }
	};
	MODULE_DEVICE_TABLE(hid, asus_devices);

	static struct hid_driver asus_driver = {
	.name = "asus",
	.id_table = asus_devices,
	.report_fixup = asus_report_fixup,
	.probe = asus_probe,
	.input_mapping = asus_input_mapping,
	.input_configured = asus_input_configured,
	#ifdef CONFIG_PM
	.reset_resume = asus_reset_resume,
	#endif
	.raw_event = asus_raw_event
	};
	module_hid_driver(asus_driver);

	MODULE_LICENSE("GPL");