HID: add support for Acer T230H multitouch (49e4739a) · Commits · e / devices / android_kernel_oneplus_sm8150

drivers/hid/Kconfig

+6 −0

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		@@ -241,6 +241,12 @@ config HID_PETALYNX
		---help---
		Support for Petalynx Maxter remote control.

		config HID_QUANTA
		tristate "Quanta Optical Touch"
		depends on USB_HID
		---help---
		Support for Quanta Optical Touch dual-touch panels.

		config HID_SAMSUNG
		tristate "Samsung" if EMBEDDED
		depends on USB_HID

drivers/hid/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -38,6 +38,7 @@ obj-$(CONFIG_HID_LOGITECH) += hid-logitech.o
		obj-$(CONFIG_HID_MICROSOFT) += hid-microsoft.o
		obj-$(CONFIG_HID_MONTEREY) += hid-monterey.o
		obj-$(CONFIG_HID_NTRIG) += hid-ntrig.o
		obj-$(CONFIG_HID_QUANTA) += hid-quanta.o
		obj-$(CONFIG_HID_PANTHERLORD) += hid-pl.o
		obj-$(CONFIG_HID_PETALYNX) += hid-petalynx.o
		obj-$(CONFIG_HID_SAMSUNG) += hid-samsung.o

drivers/hid/hid-core.c

+1 −0

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		@@ -1338,6 +1338,7 @@ static const struct hid_device_id hid_blacklist[] = {
		{ HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
		{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
		{ HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
		{ HID_USB_DEVICE(USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH) },
		{ HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
		{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
		{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },

drivers/hid/hid-ids.h

+3 −0

Original line number	Diff line number	Diff line
		@@ -383,6 +383,9 @@
		#define USB_VENDOR_ID_SAITEK 0x06a3
		#define USB_DEVICE_ID_SAITEK_RUMBLEPAD 0xff17

		#define USB_VENDOR_ID_QUANTA 0x0408
		#define USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH 0x3000

		#define USB_VENDOR_ID_SAMSUNG 0x0419
		#define USB_DEVICE_ID_SAMSUNG_IR_REMOTE 0x0001

drivers/hid/hid-quanta.c

0 → 100644

+259 −0

Original line number	Diff line number	Diff line
		/*
		* HID driver for Quanta Optical Touch dual-touch panels
		*
		* Copyright (c) 2009-2010 Stephane Chatty <chatty@enac.fr>
		*
		*/

		/*
		* 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/device.h>
		#include <linux/hid.h>
		#include <linux/module.h>

		MODULE_VERSION("1.00");
		MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");
		MODULE_DESCRIPTION("Quanta dual-touch panel");
		MODULE_LICENSE("GPL");

		#include "hid-ids.h"

		struct quanta_data {
		__u16 x, y;
		__u8 id;
		bool valid; /* valid finger data, or just placeholder? */
		bool first; /* is this the first finger in this frame? */
		bool activity_now; /* at least one active finger in this frame? */
		bool activity; /* at least one active finger previously? */
		};

		static int quanta_input_mapping(struct hid_device hdev, struct hid_input hi,
		struct hid_field field, struct hid_usage usage,
		unsigned long *bit, int max)
		{
		switch (usage->hid & HID_USAGE_PAGE) {

		case HID_UP_GENDESK:
		switch (usage->hid) {
		case HID_GD_X:
		hid_map_usage(hi, usage, bit, max,
		EV_ABS, ABS_MT_POSITION_X);
		/* touchscreen emulation */
		input_set_abs_params(hi->input, ABS_X,
		field->logical_minimum,
		field->logical_maximum, 0, 0);
		return 1;
		case HID_GD_Y:
		hid_map_usage(hi, usage, bit, max,
		EV_ABS, ABS_MT_POSITION_Y);
		/* touchscreen emulation */
		input_set_abs_params(hi->input, ABS_Y,
		field->logical_minimum,
		field->logical_maximum, 0, 0);
		return 1;
		}
		return 0;

		case HID_UP_DIGITIZER:
		switch (usage->hid) {
		case HID_DG_CONFIDENCE:
		case HID_DG_TIPSWITCH:
		case HID_DG_INPUTMODE:
		case HID_DG_DEVICEINDEX:
		case HID_DG_CONTACTCOUNT:
		case HID_DG_CONTACTMAX:
		case HID_DG_TIPPRESSURE:
		case HID_DG_WIDTH:
		case HID_DG_HEIGHT:
		return -1;
		case HID_DG_INRANGE:
		/* touchscreen emulation */
		hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);
		return 1;
		case HID_DG_CONTACTID:
		hid_map_usage(hi, usage, bit, max,
		EV_ABS, ABS_MT_TRACKING_ID);
		return 1;
		}
		return 0;

		case 0xff000000:
		/* ignore vendor-specific features */
		return -1;
		}

		return 0;
		}

		static int quanta_input_mapped(struct hid_device hdev, struct hid_input hi,
		struct hid_field field, struct hid_usage usage,
		unsigned long *bit, int max)
		{
		if (usage->type == EV_KEY \|\| usage->type == EV_ABS)
		clear_bit(usage->code, *bit);

		return 0;
		}

		/*
		* this function is called when a whole finger has been parsed,
		* so that it can decide what to send to the input layer.
		*/
		static void quanta_filter_event(struct quanta_data td, struct input_dev input)
		{

		td->first = !td->first; /* touchscreen emulation */

		if (!td->valid) {
		/*
		* touchscreen emulation: if no finger in this frame is valid
		* and there previously was finger activity, this is a release
		*/
		if (!td->first && !td->activity_now && td->activity) {
		input_event(input, EV_KEY, BTN_TOUCH, 0);
		td->activity = false;
		}
		return;
		}

		input_event(input, EV_ABS, ABS_MT_TRACKING_ID, td->id);
		input_event(input, EV_ABS, ABS_MT_POSITION_X, td->x);
		input_event(input, EV_ABS, ABS_MT_POSITION_Y, td->y);

		input_mt_sync(input);
		td->valid = false;

		/* touchscreen emulation: if first active finger in this frame... */
		if (!td->activity_now) {
		/* if there was no previous activity, emit touch event */
		if (!td->activity) {
		input_event(input, EV_KEY, BTN_TOUCH, 1);
		td->activity = true;
		}
		td->activity_now = true;
		/* and in any case this is our preferred finger */
		input_event(input, EV_ABS, ABS_X, td->x);
		input_event(input, EV_ABS, ABS_Y, td->y);
		}
		}


		static int quanta_event(struct hid_device hid, struct hid_field field,
		struct hid_usage *usage, __s32 value)
		{
		struct quanta_data *td = hid_get_drvdata(hid);

		if (hid->claimed & HID_CLAIMED_INPUT) {
		struct input_dev *input = field->hidinput->input;

		switch (usage->hid) {
		case HID_DG_INRANGE:
		td->valid = !!value;
		break;
		case HID_GD_X:
		td->x = value;
		break;
		case HID_GD_Y:
		td->y = value;
		quanta_filter_event(td, input);
		break;
		case HID_DG_CONTACTID:
		td->id = value;
		break;
		case HID_DG_CONTACTCOUNT:
		/* touch emulation: this is the last field in a frame */
		td->first = false;
		td->activity_now = false;
		break;
		case HID_DG_CONFIDENCE:
		case HID_DG_TIPSWITCH:
		/* avoid interference from generic hidinput handling */
		break;

		default:
		/* fallback to the generic hidinput handling */
		return 0;
		}
		}

		/* we have handled the hidinput part, now remains hiddev */
		if (hid->claimed & HID_CLAIMED_HIDDEV && hid->hiddev_hid_event)
		hid->hiddev_hid_event(hid, field, usage, value);

		return 1;
		}

		static int quanta_probe(struct hid_device hdev, const struct hid_device_id id)
		{
		int ret;
		struct quanta_data *td;

		td = kmalloc(sizeof(struct quanta_data), GFP_KERNEL);
		if (!td) {
		dev_err(&hdev->dev, "cannot allocate Quanta Touch data\n");
		return -ENOMEM;
		}
		td->valid = false;
		td->activity = false;
		td->activity_now = false;
		td->first = false;
		hid_set_drvdata(hdev, td);

		ret = hid_parse(hdev);
		if (!ret)
		ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);

		if (ret)
		kfree(td);

		return ret;
		}

		static void quanta_remove(struct hid_device *hdev)
		{
		hid_hw_stop(hdev);
		kfree(hid_get_drvdata(hdev));
		hid_set_drvdata(hdev, NULL);
		}

		static const struct hid_device_id quanta_devices[] = {
		{ HID_USB_DEVICE(USB_VENDOR_ID_QUANTA,
		USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH) },
		{ }
		};
		MODULE_DEVICE_TABLE(hid, quanta_devices);

		static const struct hid_usage_id quanta_grabbed_usages[] = {
		{ HID_ANY_ID, HID_ANY_ID, HID_ANY_ID },
		{ HID_ANY_ID - 1, HID_ANY_ID - 1, HID_ANY_ID - 1}
		};

		static struct hid_driver quanta_driver = {
		.name = "quanta-touch",
		.id_table = quanta_devices,
		.probe = quanta_probe,
		.remove = quanta_remove,
		.input_mapping = quanta_input_mapping,
		.input_mapped = quanta_input_mapped,
		.usage_table = quanta_grabbed_usages,
		.event = quanta_event,
		};

		static int __init quanta_init(void)
		{
		return hid_register_driver(&quanta_driver);
		}

		static void __exit quanta_exit(void)
		{
		hid_unregister_driver(&quanta_driver);
		}

		module_init(quanta_init);
		module_exit(quanta_exit);