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Commit 043b403a authored by Benjamin Tissoires's avatar Benjamin Tissoires Committed by Jiri Kosina
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HID: hid-multitouch: migrate support for Stantum panels to the unified driver. 



This patch merges hid-stantum to the generic multitouch driver.

Signed-off-by: default avatarBenjamin Tissoires <benjamin.tissoires@enac.fr>
Reviewed-by: default avatarStéphane Chatty <chatty@enac.fr>
Reviewed-by: default avatarHenrik Rydberg <rydberg@euromail.se>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent 9498f954

drivers/hid/Kconfig

+1 −6
Original line number Diff line number Diff line
@@ -327,6 +327,7 @@ config HID_MULTITOUCH 
	  - 'Sensing Win7-TwoFinger' panel by GeneralTouch

          - eGalax dual-touch panels, including the

	    Joojoo and Wetab tablets

	  - Stantum multitouch panels



	  If unsure, say N.
@@ -493,12 +494,6 @@ config HID_SONY 
	---help---

	Support for Sony PS3 controller.



config HID_STANTUM

	tristate "Stantum multitouch panel"

	depends on USB_HID

	---help---

	Support for Stantum multitouch panel.



config HID_SUNPLUS

	tristate "Sunplus wireless desktop"

	depends on USB_HID

drivers/hid/Makefile

+0 −1
Original line number Diff line number Diff line
@@ -66,7 +66,6 @@ obj-$(CONFIG_HID_ROCCAT_PYRA) += hid-roccat-pyra.o 
obj-$(CONFIG_HID_SAMSUNG)	+= hid-samsung.o

obj-$(CONFIG_HID_SMARTJOYPLUS)	+= hid-sjoy.o

obj-$(CONFIG_HID_SONY)		+= hid-sony.o

obj-$(CONFIG_HID_STANTUM)	+= hid-stantum.o

obj-$(CONFIG_HID_SUNPLUS)	+= hid-sunplus.o

obj-$(CONFIG_HID_GREENASIA)	+= hid-gaff.o

obj-$(CONFIG_HID_THRUSTMASTER)	+= hid-tmff.o

drivers/hid/hid-multitouch.c

+15 −0
Original line number Diff line number Diff line
@@ -79,6 +79,7 @@ struct mt_class { 
#define MT_CLS_DUAL_INRANGE_CONTACTNUMBER	3

#define MT_CLS_CYPRESS				4

#define MT_CLS_EGALAX				5

#define MT_CLS_STANTUM				6



#define MT_DEFAULT_MAXCONTACT	10
@@ -138,6 +139,9 @@ struct mt_class mt_classes[] = { 
		.sn_move = 4096,

		.sn_pressure = 32,

	},

	{ .name = MT_CLS_STANTUM,

		.quirks = MT_QUIRK_VALID_IS_CONFIDENCE },



	{ }

};
@@ -552,6 +556,17 @@ static const struct hid_device_id mt_devices[] = { 
		HID_USB_DEVICE(USB_VENDOR_ID_DWAV,

			USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH4) },



	/* Stantum panels */

	{ .driver_data = MT_CLS_STANTUM,

		HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,

			USB_DEVICE_ID_MTP)},

	{ .driver_data = MT_CLS_STANTUM,

		HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,

			USB_DEVICE_ID_MTP_STM)},

	{ .driver_data = MT_CLS_STANTUM,

		HID_USB_DEVICE(USB_VENDOR_ID_STANTUM,

			USB_DEVICE_ID_MTP_SITRONIX)},



	{ }

};

MODULE_DEVICE_TABLE(hid, mt_devices);

drivers/hid/hid-stantum.c

deleted100644 → 0
+0 −286
Original line number Diff line number Diff line 
/*

 *  HID driver for Stantum multitouch panels

 *

 *  Copyright (c) 2009 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>

#include <linux/slab.h>



MODULE_AUTHOR("Stephane Chatty <chatty@enac.fr>");

MODULE_DESCRIPTION("Stantum HID multitouch panels");

MODULE_LICENSE("GPL");



#include "hid-ids.h"



struct stantum_data {

	__s32 x, y, z, w, h;	/* x, y, pressure, width, height */

	__u16 id;		/* touch id */

	bool valid;		/* valid finger data, or just placeholder? */

	bool first;		/* first finger in the HID packet? */

	bool activity;		/* at least one active finger so far? */

};



static int stantum_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_INRANGE:

		case HID_DG_CONFIDENCE:

		case HID_DG_INPUTMODE:

		case HID_DG_DEVICEINDEX:

		case HID_DG_CONTACTCOUNT:

		case HID_DG_CONTACTMAX:

			return -1;



		case HID_DG_TIPSWITCH:

			/* touchscreen emulation */

			hid_map_usage(hi, usage, bit, max, EV_KEY, BTN_TOUCH);

			return 1;



		case HID_DG_WIDTH:

			hid_map_usage(hi, usage, bit, max,

					EV_ABS, ABS_MT_TOUCH_MAJOR);

			return 1;

		case HID_DG_HEIGHT:

			hid_map_usage(hi, usage, bit, max,

					EV_ABS, ABS_MT_TOUCH_MINOR);

			input_set_abs_params(hi->input, ABS_MT_ORIENTATION,

					1, 1, 0, 0);

			return 1;

		case HID_DG_TIPPRESSURE:

			hid_map_usage(hi, usage, bit, max,

					EV_ABS, ABS_MT_PRESSURE);

			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:

		/* no input-oriented meaning */

		return -1;

	}



	return 0;

}



static int stantum_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 stantum_filter_event(struct stantum_data *sd,

					struct input_dev *input)

{

	bool wide;



	if (!sd->valid) {

		/*

		 * touchscreen emulation: if the first finger is not valid and

		 * there previously was finger activity, this is a release

		 */

		if (sd->first && sd->activity) {

			input_event(input, EV_KEY, BTN_TOUCH, 0);

			sd->activity = false;

		}

		return;

	}



	input_event(input, EV_ABS, ABS_MT_TRACKING_ID, sd->id);

	input_event(input, EV_ABS, ABS_MT_POSITION_X, sd->x);

	input_event(input, EV_ABS, ABS_MT_POSITION_Y, sd->y);



	wide = (sd->w > sd->h);

	input_event(input, EV_ABS, ABS_MT_ORIENTATION, wide);

	input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, wide ? sd->w : sd->h);

	input_event(input, EV_ABS, ABS_MT_TOUCH_MINOR, wide ? sd->h : sd->w);



	input_event(input, EV_ABS, ABS_MT_PRESSURE, sd->z);



	input_mt_sync(input);

	sd->valid = false;



	/* touchscreen emulation */

	if (sd->first) {

		if (!sd->activity) {

			input_event(input, EV_KEY, BTN_TOUCH, 1);

			sd->activity = true;

		}

		input_event(input, EV_ABS, ABS_X, sd->x);

		input_event(input, EV_ABS, ABS_Y, sd->y);

	}

	sd->first = false;

}





static int stantum_event(struct hid_device *hid, struct hid_field *field,

				struct hid_usage *usage, __s32 value)

{

	struct stantum_data *sd = hid_get_drvdata(hid);



	if (hid->claimed & HID_CLAIMED_INPUT) {

		struct input_dev *input = field->hidinput->input;



		switch (usage->hid) {

		case HID_DG_INRANGE:

			/* this is the last field in a finger */

			stantum_filter_event(sd, input);

			break;

		case HID_DG_WIDTH:

			sd->w = value;

			break;

		case HID_DG_HEIGHT:

			sd->h = value;

			break;

		case HID_GD_X:

			sd->x = value;

			break;

		case HID_GD_Y:

			sd->y = value;

			break;

		case HID_DG_TIPPRESSURE:

			sd->z = value;

			break;

		case HID_DG_CONTACTID:

			sd->id = value;

			break;

		case HID_DG_CONFIDENCE:

			sd->valid = !!value;

			break;

		case 0xff000002:

			/* this comes only before the first finger */

			sd->first = true;

			break;



		default:

			/* ignore the others */

			return 1;

		}

	}



	/* 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 stantum_probe(struct hid_device *hdev,

				const struct hid_device_id *id)

{

	int ret;

	struct stantum_data *sd;



	sd = kmalloc(sizeof(struct stantum_data), GFP_KERNEL);

	if (!sd) {

		hid_err(hdev, "cannot allocate Stantum data\n");

		return -ENOMEM;

	}

	sd->valid = false;

	sd->first = false;

	sd->activity = false;

	hid_set_drvdata(hdev, sd);



	ret = hid_parse(hdev);

	if (!ret)

		ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);



	if (ret)

		kfree(sd);



	return ret;

}



static void stantum_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 stantum_devices[] = {

	{ HID_USB_DEVICE(USB_VENDOR_ID_STANTUM, USB_DEVICE_ID_MTP) },

	{ HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM, USB_DEVICE_ID_MTP_STM) },

	{ HID_USB_DEVICE(USB_VENDOR_ID_STANTUM_SITRONIX, USB_DEVICE_ID_MTP_SITRONIX) },

	{ }

};

MODULE_DEVICE_TABLE(hid, stantum_devices);



static const struct hid_usage_id stantum_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 stantum_driver = {

	.name = "stantum",

	.id_table = stantum_devices,

	.probe = stantum_probe,

	.remove = stantum_remove,

	.input_mapping = stantum_input_mapping,

	.input_mapped = stantum_input_mapped,

	.usage_table = stantum_grabbed_usages,

	.event = stantum_event,

};



static int __init stantum_init(void)

{

	return hid_register_driver(&stantum_driver);

}



static void __exit stantum_exit(void)

{

	hid_unregister_driver(&stantum_driver);

}



module_init(stantum_init);

module_exit(stantum_exit);