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Input: add match() method to input hanlders

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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>
This commit is contained in:
Dmitry Torokhov
2010-02-02 21:08:26 -08:00
parent 1e87a43080
commit 0b7024ac4d
4 changed files with 40 additions and 35 deletions
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32
drivers/input/joydev.c
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@@ -775,6 +775,20 @@ static void joydev_cleanup(struct joydev *joydev)
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 @@ static void joydev_disconnect(struct input_handle *handle)
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 @@ MODULE_DEVICE_TABLE(input, joydev_ids);
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)