1 files changed, 446 insertions, 0 deletions

diff --git a/drivers/input/tablet/hanwang.c b/drivers/input/tablet/hanwang.c
new file mode 100644
index 000000000000..6504b627b234
--- /dev/null
+++ b/drivers/input/tablet/hanwang.c
@@ -0,0 +1,446 @@
+/*
+ *  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_MASTER_PKGLEN_MAX   10
+
+/* device IDs */
+#define STYLUS_DEVICE_ID        0x02
+#define TOUCH_DEVICE_ID         0x03
+#define CURSOR_DEVICE_ID        0x06
+#define ERASER_DEVICE_ID        0x0A
+#define PAD_DEVICE_ID           0x0F
+
+/* 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)
+
+enum hanwang_tablet_type {
+        HANWANG_ART_MASTER_III,
+        HANWANG_ART_MASTER_HD,
+};
+
+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;
+        unsigned int current_id;
+        char name[64];
+        char phys[32];
+};
+
+struct hanwang_features {
+        unsigned short pid;
+        char *name;
+        enum hanwang_tablet_type type;
+        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", HANWANG_ART_MASTER_III,
+          ART_MASTER_PKGLEN_MAX, 0x5757, 0x3692, 0x3f, 0x7f, 2048 },
+        { 0x8529, "Hanwang Art Master III 0604", HANWANG_ART_MASTER_III,
+          ART_MASTER_PKGLEN_MAX, 0x3d84, 0x2672, 0x3f, 0x7f, 2048 },
+        { 0x852a, "Hanwang Art Master III 1308", HANWANG_ART_MASTER_III,
+          ART_MASTER_PKGLEN_MAX, 0x7f00, 0x4f60, 0x3f, 0x7f, 2048 },
+        { 0x8401, "Hanwang Art Master HD 5012", HANWANG_ART_MASTER_HD,
+          ART_MASTER_PKGLEN_MAX, 0x678e, 0x4150, 0x3f, 0x7f, 1024 },
+};
+
+static const int hw_eventtypes[] = {
+        EV_KEY, EV_ABS, EV_MSC,
+};
+
+static const int hw_absevents[] = {
+        ABS_X, ABS_Y, ABS_TILT_X, ABS_TILT_Y, ABS_WHEEL,
+        ABS_RX, ABS_RY, ABS_PRESSURE, ABS_MISC,
+};
+
+static const int hw_btnevents[] = {
+        BTN_STYLUS, BTN_STYLUS2, BTN_TOOL_PEN, BTN_TOOL_RUBBER,
+        BTN_TOOL_MOUSE, BTN_TOOL_FINGER,
+        BTN_0, BTN_1, BTN_2, BTN_3, BTN_4, BTN_5, BTN_6, BTN_7, BTN_8,
+};
+
+static const int hw_mscevents[] = {
+        MSC_SERIAL,
+};
+
+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;
+        enum hanwang_tablet_type type = hanwang->features->type;
+        int i;
+        u16 x, y, p;
+
+        switch (data[0]) {
+        case 0x02:      /* data packet */
+                switch (data[1]) {
+                case 0x80:      /* tool prox out */
+                        hanwang->current_id = 0;
+                        input_report_key(input_dev, hanwang->current_tool, 0);
+                        break;
+
+                case 0xc2:      /* first time tool prox in */
+                        switch (data[3] & 0xf0) {
+                        case 0x20:      /* art_master III */
+                        case 0x30:      /* art_master_HD */
+                                hanwang->current_id = STYLUS_DEVICE_ID;
+                                hanwang->current_tool = BTN_TOOL_PEN;
+                                input_report_key(input_dev, BTN_TOOL_PEN, 1);
+                                break;
+                        case 0xa0:      /* art_master III */
+                        case 0xb0:      /* art_master_HD */
+                                hanwang->current_id = ERASER_DEVICE_ID;
+                                hanwang->current_tool = BTN_TOOL_RUBBER;
+                                input_report_key(input_dev, BTN_TOOL_RUBBER, 1);
+                                break;
+                        default:
+                                hanwang->current_id = 0;
+                                dev_dbg(&dev->dev,
+                                        "unknown tablet tool %02x ", data[0]);
+                                break;
+                        }
+                        break;
+
+                default:        /* tool data packet */
+                        x = (data[2] << 8) | data[3];
+                        y = (data[4] << 8) | data[5];
+
+                        switch (type) {
+                        case HANWANG_ART_MASTER_III:
+                                p = (data[6] << 3) |
+                                    ((data[7] & 0xc0) >> 5) |
+                                    (data[1] & 0x01);
+                                break;
+
+                        case HANWANG_ART_MASTER_HD:
+                                p = (data[7] >> 6) | (data[6] << 2);
+                                break;
+
+                        default:
+                                p = 0;
+                                break;
+                        }
+
+                        input_report_abs(input_dev, ABS_X,
+                                                le16_to_cpup((__le16 *)&x));
+                        input_report_abs(input_dev, ABS_Y,
+                                                le16_to_cpup((__le16 *)&y));
+                        input_report_abs(input_dev, ABS_PRESSURE,
+                                                le16_to_cpup((__le16 *)&p));
+                        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;
+                }
+                input_report_abs(input_dev, ABS_MISC, hanwang->current_id);
+                input_event(input_dev, EV_MSC, MSC_SERIAL,
+                                hanwang->features->pid);
+                break;
+
+        case 0x0c:
+                /* roll wheel */
+                hanwang->current_id = PAD_DEVICE_ID;
+
+                switch (type) {
+                case HANWANG_ART_MASTER_III:
+                        input_report_key(input_dev, BTN_TOOL_FINGER, data[1] ||
+                                                        data[2] || data[3]);
+                        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;
+
+                case HANWANG_ART_MASTER_HD:
+                        input_report_key(input_dev, BTN_TOOL_FINGER, data[1] ||
+                                        data[2] || data[3] || data[4] ||
+                                        data[5] || data[6]);
+                        input_report_abs(input_dev, ABS_RX,
+                                        ((data[1] & 0x1f) << 8) | data[2]);
+                        input_report_abs(input_dev, ABS_RY,
+                                        ((data[3] & 0x1f) << 8) | data[4]);
+                        input_report_key(input_dev, BTN_0, data[5] & 0x01);
+                        for (i = 0; i < 4; i++) {
+                                input_report_key(input_dev,
+                                         BTN_1 + i, data[5] & (1 << i));
+                                input_report_key(input_dev,
+                                         BTN_5 + i, data[6] & (1 << i));
+                        }
+                        break;
+                }
+
+                input_report_abs(input_dev, ABS_MISC, hanwang->current_id);
+                input_event(input_dev, EV_MSC, MSC_SERIAL, 0xffffffff);
+                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);
+
+        for (i = 0; i < ARRAY_SIZE(hw_mscevents); ++i)
+                __set_bit(hw_mscevents[i], input_dev->mscbit);
+
+        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);