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-rw-r--r--drivers/input/tablet/wacom_sys.c83
-rw-r--r--drivers/input/tablet/wacom_wac.c33
-rw-r--r--drivers/input/tablet/wacom_wac.h5
3 files changed, 99 insertions, 22 deletions
diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c
index f46502589e4e..a03ca219d49f 100644
--- a/drivers/input/tablet/wacom_sys.c
+++ b/drivers/input/tablet/wacom_sys.c
@@ -528,6 +528,81 @@ static int wacom_retrieve_hid_descriptor(struct usb_interface *intf,
return error;
}
+struct wacom_usbdev_data {
+ struct list_head list;
+ struct kref kref;
+ struct usb_device *dev;
+ struct wacom_shared shared;
+};
+
+static LIST_HEAD(wacom_udev_list);
+static DEFINE_MUTEX(wacom_udev_list_lock);
+
+static struct wacom_usbdev_data *wacom_get_usbdev_data(struct usb_device *dev)
+{
+ struct wacom_usbdev_data *data;
+
+ list_for_each_entry(data, &wacom_udev_list, list) {
+ if (data->dev == dev) {
+ kref_get(&data->kref);
+ return data;
+ }
+ }
+
+ return NULL;
+}
+
+static int wacom_add_shared_data(struct wacom_wac *wacom,
+ struct usb_device *dev)
+{
+ struct wacom_usbdev_data *data;
+ int retval = 0;
+
+ mutex_lock(&wacom_udev_list_lock);
+
+ data = wacom_get_usbdev_data(dev);
+ if (!data) {
+ data = kzalloc(sizeof(struct wacom_usbdev_data), GFP_KERNEL);
+ if (!data) {
+ retval = -ENOMEM;
+ goto out;
+ }
+
+ kref_init(&data->kref);
+ data->dev = dev;
+ list_add_tail(&data->list, &wacom_udev_list);
+ }
+
+ wacom->shared = &data->shared;
+
+out:
+ mutex_unlock(&wacom_udev_list_lock);
+ return retval;
+}
+
+static void wacom_release_shared_data(struct kref *kref)
+{
+ struct wacom_usbdev_data *data =
+ container_of(kref, struct wacom_usbdev_data, kref);
+
+ mutex_lock(&wacom_udev_list_lock);
+ list_del(&data->list);
+ mutex_unlock(&wacom_udev_list_lock);
+
+ kfree(data);
+}
+
+static void wacom_remove_shared_data(struct wacom_wac *wacom)
+{
+ struct wacom_usbdev_data *data;
+
+ if (wacom->shared) {
+ data = container_of(wacom->shared, struct wacom_usbdev_data, shared);
+ kref_put(&data->kref, wacom_release_shared_data);
+ wacom->shared = NULL;
+ }
+}
+
static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
struct usb_device *dev = interface_to_usbdev(intf);
@@ -600,6 +675,10 @@ static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *i
features->device_type == BTN_TOOL_PEN ?
" Pen" : " Finger",
sizeof(wacom_wac->name));
+
+ error = wacom_add_shared_data(wacom_wac, dev);
+ if (error)
+ goto fail3;
}
input_dev->name = wacom_wac->name;
@@ -624,7 +703,7 @@ static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *i
error = input_register_device(wacom->dev);
if (error)
- goto fail3;
+ goto fail4;
/* Note that if query fails it is not a hard failure */
wacom_query_tablet_data(intf, features);
@@ -632,6 +711,7 @@ static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *i
usb_set_intfdata(intf, wacom);
return 0;
+ fail4: wacom_remove_shared_data(wacom_wac);
fail3: usb_free_urb(wacom->irq);
fail2: usb_buffer_free(dev, WACOM_PKGLEN_MAX, wacom_wac->data, wacom->data_dma);
fail1: input_free_device(input_dev);
@@ -651,6 +731,7 @@ static void wacom_disconnect(struct usb_interface *intf)
usb_free_urb(wacom->irq);
usb_buffer_free(interface_to_usbdev(intf), WACOM_PKGLEN_MAX,
wacom->wacom_wac->data, wacom->data_dma);
+ wacom_remove_shared_data(wacom->wacom_wac);
kfree(wacom->wacom_wac);
kfree(wacom);
}
diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c
index b3ba3437a2eb..428144af865f 100644
--- a/drivers/input/tablet/wacom_wac.c
+++ b/drivers/input/tablet/wacom_wac.c
@@ -688,7 +688,6 @@ static int wacom_tpc_irq(struct wacom_wac *wacom, void *wcombo)
struct wacom_features *features = &wacom->features;
char *data = wacom->data;
int prox = 0, pressure, idx = -1;
- static int stylusInProx, touchInProx = 1, touchOut;
struct urb *urb = ((struct wacom_combo *)wcombo)->urb;
dbg("wacom_tpc_irq: received report #%d", data[0]);
@@ -707,16 +706,12 @@ static int wacom_tpc_irq(struct wacom_wac *wacom, void *wcombo)
prox = data[1] & 0x03;
}
- if (!stylusInProx) { /* stylus not in prox */
+ if (!wacom->shared->stylus_in_proximity) {
if (prox) {
- if (touchInProx) {
- wacom_tpc_touch_in(wacom, wcombo);
- touchOut = 1;
- return 1;
- }
+ wacom_tpc_touch_in(wacom, wcombo);
} else {
- /* 2FGT out-prox */
if (data[0] == WACOM_REPORT_TPC2FG) {
+ /* 2FGT out-prox */
idx = (wacom->id[1] & 0x01) - 1;
if (idx == 0) {
wacom_tpc_touch_out(wacom, wcombo, idx);
@@ -727,23 +722,19 @@ static int wacom_tpc_irq(struct wacom_wac *wacom, void *wcombo)
idx = (wacom->id[1] & 0x02) - 1;
if (idx == 1)
wacom_tpc_touch_out(wacom, wcombo, idx);
- } else /* one finger touch */
+ } else {
+ /* one finger touch */
wacom_tpc_touch_out(wacom, wcombo, 0);
- touchOut = 0;
- touchInProx = 1;
- return 1;
+ }
+ wacom->id[0] = 0;
}
- } else if (touchOut || !prox) { /* force touch out-prox */
+ } else if (wacom->id[0]) { /* force touch out-prox */
wacom_tpc_touch_out(wacom, wcombo, 0);
- touchOut = 0;
- touchInProx = 1;
- return 1;
}
+ return 1;
} else if (data[0] == WACOM_REPORT_PENABLED) { /* Penabled */
prox = data[1] & 0x20;
- touchInProx = 0;
-
if (!wacom->id[0]) { /* first in prox */
/* Going into proximity select tool */
wacom->tool[0] = (data[1] & 0x0c) ? BTN_TOOL_RUBBER : BTN_TOOL_PEN;
@@ -751,6 +742,8 @@ static int wacom_tpc_irq(struct wacom_wac *wacom, void *wcombo)
wacom->id[0] = STYLUS_DEVICE_ID;
else
wacom->id[0] = ERASER_DEVICE_ID;
+
+ wacom->shared->stylus_in_proximity = true;
}
wacom_report_key(wcombo, BTN_STYLUS, data[1] & 0x02);
wacom_report_key(wcombo, BTN_STYLUS2, data[1] & 0x10);
@@ -763,12 +756,10 @@ static int wacom_tpc_irq(struct wacom_wac *wacom, void *wcombo)
wacom_report_key(wcombo, BTN_TOUCH, data[1] & 0x05);
if (!prox) { /* out-prox */
wacom->id[0] = 0;
- /* pen is out so touch can be enabled now */
- touchInProx = 1;
+ wacom->shared->stylus_in_proximity = false;
}
wacom_report_key(wcombo, wacom->tool[0], prox);
wacom_report_abs(wcombo, ABS_MISC, wacom->id[0]);
- stylusInProx = prox;
return 1;
}
return 0;
diff --git a/drivers/input/tablet/wacom_wac.h b/drivers/input/tablet/wacom_wac.h
index b50cf04e61a8..4b55fc7ad8ae 100644
--- a/drivers/input/tablet/wacom_wac.h
+++ b/drivers/input/tablet/wacom_wac.h
@@ -71,6 +71,10 @@ struct wacom_features {
unsigned char unitExpo;
};
+struct wacom_shared {
+ bool stylus_in_proximity;
+};
+
struct wacom_wac {
char name[64];
unsigned char *data;
@@ -78,6 +82,7 @@ struct wacom_wac {
int id[2];
__u32 serial[2];
struct wacom_features features;
+ struct wacom_shared *shared;
};
#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-04 07:43:33 +0000