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authorDmitry Torokhov <dmitry.torokhov@gmail.com>2010-02-02 21:08:26 -0800
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2010-02-04 00:25:19 -0800
commit0b7024ac4df5821347141c18e680b7166bc1cb20 (patch)
tree7a61e55e66bdd39351b3ec39ecef367588b47170 /drivers/input
parent1e87a43080a259a0e9739377708ece163b08de8d (diff)
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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>
Diffstat (limited to 'drivers/input')
-rw-r--r--drivers/input/input.c13
-rw-r--r--drivers/input/joydev.c32
2 files changed, 21 insertions, 24 deletions
diff --git a/drivers/input/input.c b/drivers/input/input.c
index 7080a9d..dae49eb 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -723,12 +723,13 @@ EXPORT_SYMBOL(input_set_keycode);
if (i != BITS_TO_LONGS(max)) \
continue;
-static const struct input_device_id *input_match_device(const struct input_device_id *id,
+static const struct input_device_id *input_match_device(struct input_handler *handler,
struct input_dev *dev)
{
+ const struct input_device_id *id;
int i;
- for (; id->flags || id->driver_info; id++) {
+ for (id = handler->id_table; id->flags || id->driver_info; id++) {
if (id->flags & INPUT_DEVICE_ID_MATCH_BUS)
if (id->bustype != dev->id.bustype)
@@ -756,7 +757,8 @@ static const struct input_device_id *input_match_device(const struct input_devic
MATCH_BIT(ffbit, FF_MAX);
MATCH_BIT(swbit, SW_MAX);
- return id;
+ if (!handler->match || handler->match(handler, dev))
+ return id;
}
return NULL;
@@ -767,10 +769,7 @@ static int input_attach_handler(struct input_dev *dev, struct input_handler *han
const struct input_device_id *id;
int error;
- if (handler->blacklist && input_match_device(handler->blacklist, dev))
- return -ENODEV;
-
- id = input_match_device(handler->id_table, dev);
+ id = input_match_device(handler, dev);
if (!id)
return -ENODEV;
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 @@ 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)