Input: add match() method to input hanlders
Get rid of blacklist in input handler structure and instead allow
handlers to define their own match() method to perform fine-grained
filtering of supported devices.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/joydev.c b/drivers/input/joydev.c
index b1bd6dd..63e71f2 100644
--- a/drivers/input/joydev.c
+++ b/drivers/input/joydev.c
@@ -775,6 +775,20 @@
input_close_device(handle);
}
+
+static bool joydev_match(struct input_handler *handler, struct input_dev *dev)
+{
+ /* Avoid touchpads and touchscreens */
+ if (test_bit(EV_KEY, dev->evbit) && test_bit(BTN_TOUCH, dev->keybit))
+ return false;
+
+ /* Avoid tablets, digitisers and similar devices */
+ if (test_bit(EV_KEY, dev->evbit) && test_bit(BTN_DIGI, dev->keybit))
+ return false;
+
+ return true;
+}
+
static int joydev_connect(struct input_handler *handler, struct input_dev *dev,
const struct input_device_id *id)
{
@@ -894,22 +908,6 @@
put_device(&joydev->dev);
}
-static const struct input_device_id joydev_blacklist[] = {
- {
- .flags = INPUT_DEVICE_ID_MATCH_EVBIT |
- INPUT_DEVICE_ID_MATCH_KEYBIT,
- .evbit = { BIT_MASK(EV_KEY) },
- .keybit = { [BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH) },
- }, /* Avoid itouchpads and touchscreens */
- {
- .flags = INPUT_DEVICE_ID_MATCH_EVBIT |
- INPUT_DEVICE_ID_MATCH_KEYBIT,
- .evbit = { BIT_MASK(EV_KEY) },
- .keybit = { [BIT_WORD(BTN_DIGI)] = BIT_MASK(BTN_DIGI) },
- }, /* Avoid tablets, digitisers and similar devices */
- { } /* Terminating entry */
-};
-
static const struct input_device_id joydev_ids[] = {
{
.flags = INPUT_DEVICE_ID_MATCH_EVBIT |
@@ -936,13 +934,13 @@
static struct input_handler joydev_handler = {
.event = joydev_event,
+ .match = joydev_match,
.connect = joydev_connect,
.disconnect = joydev_disconnect,
.fops = &joydev_fops,
.minor = JOYDEV_MINOR_BASE,
.name = "joydev",
.id_table = joydev_ids,
- .blacklist = joydev_blacklist,
};
static int __init joydev_init(void)