1 files changed, 200 insertions, 31 deletions

diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c
index ca28066dc81e..0d269212931e 100644
--- a/drivers/input/tablet/wacom_sys.c
+++ b/drivers/input/tablet/wacom_sys.c
@@ -167,6 +167,19 @@ static void wacom_close(struct input_dev *dev)
                 usb_autopm_put_interface(wacom->intf);
 }
 
+/*
+ * Static values for max X/Y and resolution of Pen interface is stored in
+ * features. This mean physical size of active area can be computed.
+ * This is useful to do when Pen and Touch have same active area of tablet.
+ * This means for Touch device, we only need to find max X/Y value and we
+ * have enough information to compute resolution of touch.
+ */
+static void wacom_set_phy_from_res(struct wacom_features *features)
+{
+        features->x_phy = (features->x_max * 100) / features->x_resolution;
+        features->y_phy = (features->y_max * 100) / features->y_resolution;
+}
+
 static int wacom_parse_logical_collection(unsigned char *report,
                                           struct wacom_features *features)
 {
@@ -178,15 +191,7 @@ static int wacom_parse_logical_collection(unsigned char *report,
                 features->pktlen = WACOM_PKGLEN_BBTOUCH3;
                 features->device_type = BTN_TOOL_FINGER;
 
-                /*
-                 * Stylus and Touch have same active area
-                 * so compute physical size based on stylus
-                 * data before its overwritten.
-                 */
-                features->x_phy =
-                        (features->x_max * 100) / features->x_resolution;
-                features->y_phy =
-                        (features->y_max * 100) / features->y_resolution;
+                wacom_set_phy_from_res(features);
 
                 features->x_max = features->y_max =
                         get_unaligned_le16(&report[10]);
@@ -422,6 +427,7 @@ static int wacom_query_tablet_data(struct usb_interface *intf, struct wacom_feat
                                                 report_id, rep_data, 4, 1);
                 } while ((error < 0 || rep_data[1] != 4) && limit++ < WAC_MSG_RETRIES);
         } else if (features->type != TABLETPC &&
+                   features->type != WIRELESS &&
                    features->device_type == BTN_TOOL_PEN) {
                 do {
                         rep_data[0] = 2;
@@ -454,6 +460,21 @@ static int wacom_retrieve_hid_descriptor(struct usb_interface *intf,
         features->pressure_fuzz = 0;
         features->distance_fuzz = 0;
 
+        /*
+         * The wireless device HID is basic and layout conflicts with
+         * other tablets (monitor and touch interface can look like pen).
+         * Skip the query for this type and modify defaults based on
+         * interface number.
+         */
+        if (features->type == WIRELESS) {
+                if (intf->cur_altsetting->desc.bInterfaceNumber == 0) {
+                        features->device_type = 0;
+                } else if (intf->cur_altsetting->desc.bInterfaceNumber == 2) {
+                        features->device_type = BTN_TOOL_DOUBLETAP;
+                        features->pktlen = WACOM_PKGLEN_BBTOUCH3;
+                }
+        }
+
         /* only Tablet PCs and Bamboo P&T need to retrieve the info */
         if ((features->type != TABLETPC) && (features->type != TABLETPC2FG) &&
             (features->type != BAMBOO_PT))
@@ -822,6 +843,152 @@ static void wacom_destroy_leds(struct wacom *wacom)
         }
 }
 
+static enum power_supply_property wacom_battery_props[] = {
+        POWER_SUPPLY_PROP_CAPACITY
+};
+
+static int wacom_battery_get_property(struct power_supply *psy,
+                                      enum power_supply_property psp,
+                                      union power_supply_propval *val)
+{
+        struct wacom *wacom = container_of(psy, struct wacom, battery);
+        int ret = 0;
+
+        switch (psp) {
+                case POWER_SUPPLY_PROP_CAPACITY:
+                        val->intval =
+                                wacom->wacom_wac.battery_capacity * 100 / 31;
+                        break;
+                default:
+                        ret = -EINVAL;
+                        break;
+        }
+
+        return ret;
+}
+
+static int wacom_initialize_battery(struct wacom *wacom)
+{
+        int error = 0;
+
+        if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_MONITOR) {
+                wacom->battery.properties = wacom_battery_props;
+                wacom->battery.num_properties = ARRAY_SIZE(wacom_battery_props);
+                wacom->battery.get_property = wacom_battery_get_property;
+                wacom->battery.name = "wacom_battery";
+                wacom->battery.type = POWER_SUPPLY_TYPE_BATTERY;
+                wacom->battery.use_for_apm = 0;
+
+                error = power_supply_register(&wacom->usbdev->dev,
+                                              &wacom->battery);
+        }
+
+        return error;
+}
+
+static void wacom_destroy_battery(struct wacom *wacom)
+{
+        if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_MONITOR)
+                power_supply_unregister(&wacom->battery);
+}
+
+static int wacom_register_input(struct wacom *wacom)
+{
+        struct input_dev *input_dev;
+        struct usb_interface *intf = wacom->intf;
+        struct usb_device *dev = interface_to_usbdev(intf);
+        struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
+        int error;
+
+        input_dev = input_allocate_device();
+        if (!input_dev)
+                return -ENOMEM;
+
+        input_dev->name = wacom_wac->name;
+        input_dev->dev.parent = &intf->dev;
+        input_dev->open = wacom_open;
+        input_dev->close = wacom_close;
+        usb_to_input_id(dev, &input_dev->id);
+        input_set_drvdata(input_dev, wacom);
+
+        wacom_wac->input = input_dev;
+        wacom_setup_input_capabilities(input_dev, wacom_wac);
+
+        error = input_register_device(input_dev);
+        if (error) {
+                input_free_device(input_dev);
+                wacom_wac->input = NULL;
+        }
+
+        return error;
+}
+
+static void wacom_wireless_work(struct work_struct *work)
+{
+        struct wacom *wacom = container_of(work, struct wacom, work);
+        struct usb_device *usbdev = wacom->usbdev;
+        struct wacom_wac *wacom_wac = &wacom->wacom_wac;
+
+        /*
+         * Regardless if this is a disconnect or a new tablet,
+         * remove any existing input devices.
+         */
+
+        /* Stylus interface */
+        wacom = usb_get_intfdata(usbdev->config->interface[1]);
+        if (wacom->wacom_wac.input)
+                input_unregister_device(wacom->wacom_wac.input);
+        wacom->wacom_wac.input = 0;
+
+        /* Touch interface */
+        wacom = usb_get_intfdata(usbdev->config->interface[2]);
+        if (wacom->wacom_wac.input)
+                input_unregister_device(wacom->wacom_wac.input);
+        wacom->wacom_wac.input = 0;
+
+        if (wacom_wac->pid == 0) {
+                printk(KERN_INFO "wacom: wireless tablet disconnected\n");
+        } else {
+                const struct usb_device_id *id = wacom_ids;
+
+                printk(KERN_INFO
+                       "wacom: wireless tablet connected with PID %x\n",
+                       wacom_wac->pid);
+
+                while (id->match_flags) {
+                        if (id->idVendor == USB_VENDOR_ID_WACOM &&
+                            id->idProduct == wacom_wac->pid)
+                                break;
+                        id++;
+                }
+
+                if (!id->match_flags) {
+                        printk(KERN_INFO
+                               "wacom: ignorning unknown PID.\n");
+                        return;
+                }
+
+                /* Stylus interface */
+                wacom = usb_get_intfdata(usbdev->config->interface[1]);
+                wacom_wac = &wacom->wacom_wac;
+                wacom_wac->features =
+                        *((struct wacom_features *)id->driver_info);
+                wacom_wac->features.device_type = BTN_TOOL_PEN;
+                wacom_register_input(wacom);
+
+                /* Touch interface */
+                wacom = usb_get_intfdata(usbdev->config->interface[2]);
+                wacom_wac = &wacom->wacom_wac;
+                wacom_wac->features =
+                        *((struct wacom_features *)id->driver_info);
+                wacom_wac->features.pktlen = WACOM_PKGLEN_BBTOUCH3;
+                wacom_wac->features.device_type = BTN_TOOL_FINGER;
+                wacom_set_phy_from_res(&wacom_wac->features);
+                wacom_wac->features.x_max = wacom_wac->features.y_max = 4096;
+                wacom_register_input(wacom);
+        }
+}
+
 static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *id)
 {
         struct usb_device *dev = interface_to_usbdev(intf);
@@ -829,18 +996,14 @@ static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *i
         struct wacom *wacom;
         struct wacom_wac *wacom_wac;
         struct wacom_features *features;
-        struct input_dev *input_dev;
         int error;
 
         if (!id->driver_info)
                 return -EINVAL;
 
         wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
-        input_dev = input_allocate_device();
-        if (!wacom || !input_dev) {
-                error = -ENOMEM;
-                goto fail1;
-        }
+        if (!wacom)
+                return -ENOMEM;
 
         wacom_wac = &wacom->wacom_wac;
         wacom_wac->features = *((struct wacom_features *)id->driver_info);
@@ -866,11 +1029,10 @@ static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *i
         wacom->usbdev = dev;
         wacom->intf = intf;
         mutex_init(&wacom->lock);
+        INIT_WORK(&wacom->work, wacom_wireless_work);
         usb_make_path(dev, wacom->phys, sizeof(wacom->phys));
         strlcat(wacom->phys, "/input0", sizeof(wacom->phys));
 
-        wacom_wac->input = input_dev;
-
         endpoint = &intf->cur_altsetting->endpoint[0].desc;
 
         /* Retrieve the physical and logical size for OEM devices */
@@ -894,15 +1056,6 @@ static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *i
                         goto fail3;
         }
 
-        input_dev->name = wacom_wac->name;
-        input_dev->dev.parent = &intf->dev;
-        input_dev->open = wacom_open;
-        input_dev->close = wacom_close;
-        usb_to_input_id(dev, &input_dev->id);
-        input_set_drvdata(input_dev, wacom);
-
-        wacom_setup_input_capabilities(input_dev, wacom_wac);
-
         usb_fill_int_urb(wacom->irq, dev,
                          usb_rcvintpipe(dev, endpoint->bEndpointAddress),
                          wacom_wac->data, features->pktlen,
@@ -914,22 +1067,34 @@ static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *i
         if (error)
                 goto fail4;
 
-        error = input_register_device(input_dev);
+        error = wacom_initialize_battery(wacom);
         if (error)
                 goto fail5;
 
+        if (!(features->quirks & WACOM_QUIRK_NO_INPUT)) {
+                error = wacom_register_input(wacom);
+                if (error)
+                        goto fail6;
+        }
+
         /* Note that if query fails it is not a hard failure */
         wacom_query_tablet_data(intf, features);
 
         usb_set_intfdata(intf, wacom);
+
+        if (features->quirks & WACOM_QUIRK_MONITOR) {
+                if (usb_submit_urb(wacom->irq, GFP_KERNEL))
+                        goto fail5;
+        }
+
         return 0;
 
+ fail6: wacom_destroy_battery(wacom);
  fail5: wacom_destroy_leds(wacom);
  fail4: wacom_remove_shared_data(wacom_wac);
  fail3: usb_free_urb(wacom->irq);
  fail2: usb_free_coherent(dev, WACOM_PKGLEN_MAX, wacom_wac->data, wacom->data_dma);
- fail1: input_free_device(input_dev);
-        kfree(wacom);
+ fail1: kfree(wacom);
         return error;
 }
 
@@ -940,7 +1105,10 @@ static void wacom_disconnect(struct usb_interface *intf)
         usb_set_intfdata(intf, NULL);
 
         usb_kill_urb(wacom->irq);
-        input_unregister_device(wacom->wacom_wac.input);
+        cancel_work_sync(&wacom->work);
+        if (wacom->wacom_wac.input)
+                input_unregister_device(wacom->wacom_wac.input);
+        wacom_destroy_battery(wacom);
         wacom_destroy_leds(wacom);
         usb_free_urb(wacom->irq);
         usb_free_coherent(interface_to_usbdev(intf), WACOM_PKGLEN_MAX,
@@ -972,7 +1140,8 @@ static int wacom_resume(struct usb_interface *intf)
         wacom_query_tablet_data(intf, features);
         wacom_led_control(wacom);
 
-        if (wacom->open && usb_submit_urb(wacom->irq, GFP_NOIO) < 0)
+        if ((wacom->open || features->quirks & WACOM_QUIRK_MONITOR)
+             && usb_submit_urb(wacom->irq, GFP_NOIO) < 0)
                 rv = -EIO;
 
         mutex_unlock(&wacom->lock);