Commit 57573c54 authored by Hans de Goede's avatar Hans de Goede Committed by Jiri Kosina
Browse files

HID: asus: Add support for T100 touchpad 



Add support for the Asus T100 touchpad in multi-touch mode (rather
then mouse emulation mode). It turns out that the Asus T100 touchpad
is identical to the already supported i2c-hid Asus touchpads, so
adding support for it was easy.

The only significant difference is that the reported x-coordinates
range on the T100 touchpad is somewhat lower then the range on the
already supported touchpads.

Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Reviewed-by: default avatarBenjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent a91ab911

drivers/hid/hid-asus.c

+18 −3
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ 
#include <linux/hid.h>

#include <linux/module.h>

#include <linux/input/mt.h>

#include <linux/usb.h> /* For to_usb_interface for T100 touchpad intf check */



#include "hid-ids.h"
@@ -38,6 +39,8 @@ MODULE_AUTHOR("Victor Vlasenko <victor.vlasenko@sysgears.com>"); 
MODULE_AUTHOR("Frederik Wenigwieser <frederik.wenigwieser@gmail.com>");

MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad");



#define T100_TPAD_INTF 2



#define FEATURE_REPORT_ID 0x0d

#define INPUT_REPORT_ID 0x5d

#define FEATURE_KBD_REPORT_ID 0x5a
@@ -50,6 +53,7 @@ MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad"); 
#define MAX_CONTACTS 5



#define MAX_X 2794

#define MAX_X_T100 2240

#define MAX_Y 1758

#define MAX_TOUCH_MAJOR 8

#define MAX_PRESSURE 128
@@ -70,11 +74,12 @@ MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad"); 
#define QUIRK_NO_CONSUMER_USAGES	BIT(4)

#define QUIRK_USE_KBD_BACKLIGHT		BIT(5)

#define QUIRK_T100_KEYBOARD		BIT(6)

#define QUIRK_T100_TOUCHPAD		BIT(7)



#define I2C_KEYBOARD_QUIRKS			(QUIRK_FIX_NOTEBOOK_REPORT | \

						 QUIRK_NO_INIT_REPORTS | \

						 QUIRK_NO_CONSUMER_USAGES)

#define I2C_TOUCHPAD_QUIRKS			(QUIRK_NO_INIT_REPORTS | \

#define TOUCHPAD_QUIRKS				(QUIRK_NO_INIT_REPORTS | \

						 QUIRK_SKIP_INPUT_MAPPING | \

						 QUIRK_IS_MULTITOUCH)
@@ -337,6 +342,9 @@ static int asus_input_configured(struct hid_device *hdev, struct hid_input *hi) 
	if (drvdata->quirks & QUIRK_IS_MULTITOUCH) {

		int ret;



		if (drvdata->quirks & QUIRK_T100_TOUCHPAD)

			input_set_abs_params(input, ABS_MT_POSITION_X, 0, MAX_X_T100, 0, 0);

		else

			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);
@@ -517,6 +525,13 @@ static int asus_probe(struct hid_device *hdev, const struct hid_device_id *id) 


	drvdata->quirks = id->driver_data;



	if (drvdata->quirks & QUIRK_T100_KEYBOARD) {

		struct usb_interface *intf = to_usb_interface(hdev->dev.parent);



		if (intf->altsetting->desc.bInterfaceNumber == T100_TPAD_INTF)

			drvdata->quirks = TOUCHPAD_QUIRKS | QUIRK_T100_TOUCHPAD;

	}



	if (drvdata->quirks & QUIRK_NO_INIT_REPORTS)

		hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
@@ -591,7 +606,7 @@ static const struct hid_device_id asus_devices[] = { 
	{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,

		USB_DEVICE_ID_ASUSTEK_I2C_KEYBOARD), I2C_KEYBOARD_QUIRKS},

	{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,

		USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD), I2C_TOUCHPAD_QUIRKS },

		USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD), TOUCHPAD_QUIRKS },

	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,

		USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1) },

	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,

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