Input: add support for Hanwang tablets (bba5394a) · Commits · e / devices / android_kernel_teracube_emerald

drivers/hid/hid-core.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -1766,6 +1766,11 @@ static bool hid_ignore(struct hid_device *hdev)
		hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
		return true;
		break;
		case USB_VENDOR_ID_HANWANG:
		if (hdev->product >= USB_DEVICE_ID_HANWANG_TABLET_FIRST &&
		hdev->product <= USB_DEVICE_ID_HANWANG_TABLET_LAST)
		return true;
		break;
		}

		if (hdev->type == HID_TYPE_USBMOUSE &&

drivers/hid/hid-ids.h

+4 −0

Original line number	Diff line number	Diff line
		@@ -291,6 +291,10 @@
		#define USB_DEVICE_ID_GYRATION_REMOTE_2 0x0003
		#define USB_DEVICE_ID_GYRATION_REMOTE_3 0x0008

		#define USB_VENDOR_ID_HANWANG 0x0b57
		#define USB_DEVICE_ID_HANWANG_TABLET_FIRST 0x5000
		#define USB_DEVICE_ID_HANWANG_TABLET_LAST 0x8fff

		#define USB_VENDOR_ID_HAPP 0x078b
		#define USB_DEVICE_ID_UGCI_DRIVING 0x0010
		#define USB_DEVICE_ID_UGCI_FLYING 0x0020

drivers/input/tablet/Kconfig

+11 −0

Original line number	Diff line number	Diff line
		@@ -49,6 +49,17 @@ config TABLET_USB_GTCO
		To compile this driver as a module, choose M here: the
		module will be called gtco.

		config TABLET_USB_HANWANG
		tristate "Hanwang Art Master III tablet support (USB)"
		depends on USB_ARCH_HAS_HCD
		select USB
		help
		Say Y here if you want to use the USB version of the Hanwang Art
		Master III tablet.

		To compile this driver as a module, choose M here: the
		module will be called hanwang.

		config TABLET_USB_KBTAB
		tristate "KB Gear JamStudio tablet support (USB)"
		depends on USB_ARCH_HAS_HCD

drivers/input/tablet/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -8,5 +8,6 @@ wacom-objs := wacom_wac.o wacom_sys.o
		obj-$(CONFIG_TABLET_USB_ACECAD) += acecad.o
		obj-$(CONFIG_TABLET_USB_AIPTEK) += aiptek.o
		obj-$(CONFIG_TABLET_USB_GTCO) += gtco.o
		obj-$(CONFIG_TABLET_USB_HANWANG) += hanwang.o
		obj-$(CONFIG_TABLET_USB_KBTAB) += kbtab.o
		obj-$(CONFIG_TABLET_USB_WACOM) += wacom.o

drivers/input/tablet/hanwang.c

0 → 100644

+365 −0

Original line number	Diff line number	Diff line
		/*
		* USB Hanwang tablet support
		*
		* Copyright (c) 2010 Xing Wei <weixing@hanwang.com.cn>
		*
		*/

		/*
		* 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.
		*
		* This program is distributed in the hope that it will be useful,
		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		* GNU General Public License for more details.
		*
		* You should have received a copy of the GNU General Public License
		* along with this program; if not, write to the Free Software
		* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
		*
		*/

		#include <linux/types.h>
		#include <linux/kernel.h>
		#include <linux/slab.h>
		#include <linux/module.h>
		#include <linux/init.h>
		#include <linux/usb/input.h>

		#define DRIVER_AUTHOR "Xing Wei <weixing@hanwang.com.cn>"
		#define DRIVER_DESC "USB Hanwang tablet driver"
		#define DRIVER_LICENSE "GPL"

		MODULE_AUTHOR(DRIVER_AUTHOR);
		MODULE_DESCRIPTION(DRIVER_DESC);
		MODULE_LICENSE(DRIVER_LICENSE);

		#define USB_VENDOR_ID_HANWANG 0x0b57
		#define HANWANG_TABLET_INT_CLASS 0x0003
		#define HANWANG_TABLET_INT_SUB_CLASS 0x0001
		#define HANWANG_TABLET_INT_PROTOCOL 0x0002

		#define ART_MASTERIII_PKGLEN_MAX 10

		/* match vendor and interface info */
		#define HANWANG_TABLET_DEVICE(vend, cl, sc, pr) \
		.match_flags = USB_DEVICE_ID_MATCH_VENDOR \
		\| USB_DEVICE_ID_MATCH_INT_INFO, \
		.idVendor = (vend), \
		.bInterfaceClass = (cl), \
		.bInterfaceSubClass = (sc), \
		.bInterfaceProtocol = (pr)

		struct hanwang {
		unsigned char *data;
		dma_addr_t data_dma;
		struct input_dev *dev;
		struct usb_device *usbdev;
		struct urb *irq;
		const struct hanwang_features *features;
		unsigned int current_tool;
		char name[64];
		char phys[32];
		};

		struct hanwang_features {
		unsigned short pid;
		char *name;
		int pkg_len;
		int max_x;
		int max_y;
		int max_tilt_x;
		int max_tilt_y;
		int max_pressure;
		};

		static const struct hanwang_features features_array[] = {
		{ 0x8528, "Hanwang Art Master III 0906",
		ART_MASTERIII_PKGLEN_MAX, 0x5757, 0x3692, 0x3f, 0x7f, 2048 },
		{ 0x8529, "Hanwang Art Master III 0604",
		ART_MASTERIII_PKGLEN_MAX, 0x3d84, 0x2672, 0x3f, 0x7f, 2048 },
		{ 0x852a, "Hanwang Art Master III 1308",
		ART_MASTERIII_PKGLEN_MAX, 0x7f00, 0x4f60, 0x3f, 0x7f, 2048 },
		};

		static const int hw_eventtypes[] = {
		EV_KEY, EV_ABS,
		};

		static const int hw_absevents[] = {
		ABS_X, ABS_Y, ABS_TILT_X, ABS_TILT_Y, ABS_WHEEL, ABS_PRESSURE,
		};

		static const int hw_btnevents[] = {
		BTN_STYLUS, BTN_STYLUS2, BTN_TOOL_PEN, BTN_TOOL_RUBBER, BTN_TOOL_MOUSE,
		BTN_0, BTN_1, BTN_2, BTN_3, BTN_4, BTN_5, BTN_6, BTN_7, BTN_8
		};

		static void hanwang_parse_packet(struct hanwang *hanwang)
		{
		unsigned char *data = hanwang->data;
		struct input_dev *input_dev = hanwang->dev;
		struct usb_device *dev = hanwang->usbdev;
		int i;

		switch (data[0]) {
		case 0x02: /* data packet */
		switch (data[1]) {
		case 0x80: /* tool prox out */
		input_report_key(input_dev, hanwang->current_tool, 0);
		break;

		case 0xc2: /* first time tool prox in */
		switch (data[3] & 0xf0) {
		case 0x20:
		hanwang->current_tool = BTN_TOOL_PEN;
		input_report_key(input_dev, BTN_TOOL_PEN, 1);
		break;
		case 0xa0:
		hanwang->current_tool = BTN_TOOL_RUBBER;
		input_report_key(input_dev, BTN_TOOL_RUBBER, 1);
		break;
		default:
		dev_dbg(&dev->dev,
		"unknown tablet tool %02x ", data[0]);
		break;
		}
		break;

		default: /* tool data packet */
		input_report_abs(input_dev, ABS_X,
		(data[2] << 8) \| data[3]);
		input_report_abs(input_dev, ABS_Y,
		(data[4] << 8) \| data[5]);
		input_report_abs(input_dev, ABS_PRESSURE,
		(data[6] << 3) \|
		((data[7] & 0xc0) >> 5) \|
		(data[1] & 0x01));
		input_report_abs(input_dev, ABS_TILT_X, data[7] & 0x3f);
		input_report_abs(input_dev, ABS_TILT_Y, data[8] & 0x7f);
		input_report_key(input_dev, BTN_STYLUS, data[1] & 0x02);
		input_report_key(input_dev, BTN_STYLUS2, data[1] & 0x04);
		break;
		}
		break;

		case 0x0c:
		/* roll wheel */
		input_report_abs(input_dev, ABS_WHEEL, data[1]);
		input_report_key(input_dev, BTN_0, data[2]);
		for (i = 0; i < 8; i++)
		input_report_key(input_dev,
		BTN_1 + i, data[3] & (1 << i));
		break;

		default:
		dev_dbg(&dev->dev, "error packet %02x ", data[0]);
		break;
		}

		input_sync(input_dev);
		}

		static void hanwang_irq(struct urb *urb)
		{
		struct hanwang *hanwang = urb->context;
		struct usb_device *dev = hanwang->usbdev;
		int retval;

		switch (urb->status) {
		case 0:
		/* success */;
		hanwang_parse_packet(hanwang);
		break;
		case -ECONNRESET:
		case -ENOENT:
		case -ESHUTDOWN:
		/* this urb is terminated, clean up */
		dev_err(&dev->dev, "%s - urb shutting down with status: %d",
		__func__, urb->status);
		return;
		default:
		dev_err(&dev->dev, "%s - nonzero urb status received: %d",
		__func__, urb->status);
		break;
		}

		retval = usb_submit_urb(urb, GFP_ATOMIC);
		if (retval)
		dev_err(&dev->dev, "%s - usb_submit_urb failed with result %d",
		__func__, retval);
		}

		static int hanwang_open(struct input_dev *dev)
		{
		struct hanwang *hanwang = input_get_drvdata(dev);

		hanwang->irq->dev = hanwang->usbdev;
		if (usb_submit_urb(hanwang->irq, GFP_KERNEL))
		return -EIO;

		return 0;
		}

		static void hanwang_close(struct input_dev *dev)
		{
		struct hanwang *hanwang = input_get_drvdata(dev);

		usb_kill_urb(hanwang->irq);
		}

		static bool get_features(struct usb_device dev, struct hanwang hanwang)
		{
		int i;

		for (i = 0; i < ARRAY_SIZE(features_array); i++) {
		if (le16_to_cpu(dev->descriptor.idProduct) ==
		features_array[i].pid) {
		hanwang->features = &features_array[i];
		return true;
		}
		}

		return false;
		}


		static int hanwang_probe(struct usb_interface intf, const struct usb_device_id id)
		{
		struct usb_device *dev = interface_to_usbdev(intf);
		struct usb_endpoint_descriptor *endpoint;
		struct hanwang *hanwang;
		struct input_dev *input_dev;
		int error;
		int i;

		hanwang = kzalloc(sizeof(struct hanwang), GFP_KERNEL);
		input_dev = input_allocate_device();
		if (!hanwang \|\| !input_dev) {
		error = -ENOMEM;
		goto fail1;
		}

		if (!get_features(dev, hanwang)) {
		error = -ENXIO;
		goto fail1;
		}

		hanwang->data = usb_alloc_coherent(dev, hanwang->features->pkg_len,
		GFP_KERNEL, &hanwang->data_dma);
		if (!hanwang->data) {
		error = -ENOMEM;
		goto fail1;
		}

		hanwang->irq = usb_alloc_urb(0, GFP_KERNEL);
		if (!hanwang->irq) {
		error = -ENOMEM;
		goto fail2;
		}

		hanwang->usbdev = dev;
		hanwang->dev = input_dev;

		usb_make_path(dev, hanwang->phys, sizeof(hanwang->phys));
		strlcat(hanwang->phys, "/input0", sizeof(hanwang->phys));

		strlcpy(hanwang->name, hanwang->features->name, sizeof(hanwang->name));
		input_dev->name = hanwang->name;
		input_dev->phys = hanwang->phys;
		usb_to_input_id(dev, &input_dev->id);
		input_dev->dev.parent = &intf->dev;

		input_set_drvdata(input_dev, hanwang);

		input_dev->open = hanwang_open;
		input_dev->close = hanwang_close;

		for (i = 0; i < ARRAY_SIZE(hw_eventtypes); ++i)
		__set_bit(hw_eventtypes[i], input_dev->evbit);

		for (i = 0; i < ARRAY_SIZE(hw_absevents); ++i)
		__set_bit(hw_absevents[i], input_dev->absbit);

		for (i = 0; i < ARRAY_SIZE(hw_btnevents); ++i)
		__set_bit(hw_btnevents[i], input_dev->keybit);

		input_set_abs_params(input_dev, ABS_X,
		0, hanwang->features->max_x, 4, 0);
		input_set_abs_params(input_dev, ABS_Y,
		0, hanwang->features->max_y, 4, 0);
		input_set_abs_params(input_dev, ABS_TILT_X,
		0, hanwang->features->max_tilt_x, 0, 0);
		input_set_abs_params(input_dev, ABS_TILT_Y,
		0, hanwang->features->max_tilt_y, 0, 0);
		input_set_abs_params(input_dev, ABS_PRESSURE,
		0, hanwang->features->max_pressure, 0, 0);

		endpoint = &intf->cur_altsetting->endpoint[0].desc;
		usb_fill_int_urb(hanwang->irq, dev,
		usb_rcvintpipe(dev, endpoint->bEndpointAddress),
		hanwang->data, hanwang->features->pkg_len,
		hanwang_irq, hanwang, endpoint->bInterval);
		hanwang->irq->transfer_dma = hanwang->data_dma;
		hanwang->irq->transfer_flags \|= URB_NO_TRANSFER_DMA_MAP;

		error = input_register_device(hanwang->dev);
		if (error)
		goto fail3;

		usb_set_intfdata(intf, hanwang);

		return 0;

		fail3: usb_free_urb(hanwang->irq);
		fail2: usb_free_coherent(dev, hanwang->features->pkg_len,
		hanwang->data, hanwang->data_dma);
		fail1: input_free_device(input_dev);
		kfree(hanwang);
		return error;

		}

		static void hanwang_disconnect(struct usb_interface *intf)
		{
		struct hanwang *hanwang = usb_get_intfdata(intf);

		input_unregister_device(hanwang->dev);
		usb_free_urb(hanwang->irq);
		usb_free_coherent(interface_to_usbdev(intf),
		hanwang->features->pkg_len, hanwang->data,
		hanwang->data_dma);
		kfree(hanwang);
		usb_set_intfdata(intf, NULL);
		}

		static const struct usb_device_id hanwang_ids[] = {
		{ HANWANG_TABLET_DEVICE(USB_VENDOR_ID_HANWANG, HANWANG_TABLET_INT_CLASS,
		HANWANG_TABLET_INT_SUB_CLASS, HANWANG_TABLET_INT_PROTOCOL) },
		{}
		};

		MODULE_DEVICE_TABLE(usb, hanwang_ids);

		static struct usb_driver hanwang_driver = {
		.name = "hanwang",
		.probe = hanwang_probe,
		.disconnect = hanwang_disconnect,
		.id_table = hanwang_ids,
		};

		static int __init hanwang_init(void)
		{
		return usb_register(&hanwang_driver);
		}

		static void __exit hanwang_exit(void)
		{
		usb_deregister(&hanwang_driver);
		}

		module_init(hanwang_init);
		module_exit(hanwang_exit);