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Input: factor out and export input_device_id matching code

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Factor out and export input_match_device_id() so that modules may use it.
It will be needed by joydev to blacklist accelerometers in composite
devices.

Tested-by: Roderick Colenbrander <roderick.colenbrander@sony.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Dmitry Torokhov 2017-10-09 11:09:33 -07:00
parent 9b5db7aab4
commit 55dfce873d
2 changed files with 41 additions and 45 deletions
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83
drivers/input/input.c
View file

@ -933,58 +933,51 @@ int input_set_keycode(struct input_dev *dev,
} }
EXPORT_SYMBOL(input_set_keycode); EXPORT_SYMBOL(input_set_keycode);
bool input_match_device_id(const struct input_dev *dev,
const struct input_device_id *id)
{
if (id->flags & INPUT_DEVICE_ID_MATCH_BUS)
if (id->bustype != dev->id.bustype)
return false;
if (id->flags & INPUT_DEVICE_ID_MATCH_VENDOR)
if (id->vendor != dev->id.vendor)
return false;
if (id->flags & INPUT_DEVICE_ID_MATCH_PRODUCT)
if (id->product != dev->id.product)
return false;
if (id->flags & INPUT_DEVICE_ID_MATCH_VERSION)
if (id->version != dev->id.version)
return false;
if (!bitmap_subset(id->evbit, dev->evbit, EV_MAX) ||
!bitmap_subset(id->keybit, dev->keybit, KEY_MAX) ||
!bitmap_subset(id->relbit, dev->relbit, REL_MAX) ||
!bitmap_subset(id->absbit, dev->absbit, ABS_MAX) ||
!bitmap_subset(id->mscbit, dev->mscbit, MSC_MAX) ||
!bitmap_subset(id->ledbit, dev->ledbit, LED_MAX) ||
!bitmap_subset(id->sndbit, dev->sndbit, SND_MAX) ||
!bitmap_subset(id->ffbit, dev->ffbit, FF_MAX) ||
!bitmap_subset(id->swbit, dev->swbit, SW_MAX)) {
return false;
}
return true;
}
EXPORT_SYMBOL(input_match_device_id);
static const struct input_device_id *input_match_device(struct input_handler *handler, static const struct input_device_id *input_match_device(struct input_handler *handler,
struct input_dev *dev) struct input_dev *dev)
{ {
const struct input_device_id *id; const struct input_device_id *id;
for (id = handler->id_table; id->flags || id->driver_info; id++) { for (id = handler->id_table; id->flags || id->driver_info; id++) {
if (input_match_device_id(dev, id) &&
if (id->flags & INPUT_DEVICE_ID_MATCH_BUS) (!handler->match || handler->match(handler, dev))) {
if (id->bustype != dev->id.bustype)
continue;
if (id->flags & INPUT_DEVICE_ID_MATCH_VENDOR)
if (id->vendor != dev->id.vendor)
continue;
if (id->flags & INPUT_DEVICE_ID_MATCH_PRODUCT)
if (id->product != dev->id.product)
continue;
if (id->flags & INPUT_DEVICE_ID_MATCH_VERSION)
if (id->version != dev->id.version)
continue;
if (!bitmap_subset(id->evbit, dev->evbit, EV_MAX))
continue;
if (!bitmap_subset(id->keybit, dev->keybit, KEY_MAX))
continue;
if (!bitmap_subset(id->relbit, dev->relbit, REL_MAX))
continue;
if (!bitmap_subset(id->absbit, dev->absbit, ABS_MAX))
continue;
if (!bitmap_subset(id->mscbit, dev->mscbit, MSC_MAX))
continue;
if (!bitmap_subset(id->ledbit, dev->ledbit, LED_MAX))
continue;
if (!bitmap_subset(id->sndbit, dev->sndbit, SND_MAX))
continue;
if (!bitmap_subset(id->ffbit, dev->ffbit, FF_MAX))
continue;
if (!bitmap_subset(id->swbit, dev->swbit, SW_MAX))
continue;
if (!handler->match || handler->match(handler, dev))
return id; return id;
}
} }
return NULL; return NULL;

3
include/linux/input.h
View file

@ -469,6 +469,9 @@ int input_get_keycode(struct input_dev *dev, struct input_keymap_entry *ke);
int input_set_keycode(struct input_dev *dev, int input_set_keycode(struct input_dev *dev,
const struct input_keymap_entry *ke); const struct input_keymap_entry *ke);
bool input_match_device_id(const struct input_dev *dev,
const struct input_device_id *id);
void input_enable_softrepeat(struct input_dev *dev, int delay, int period); void input_enable_softrepeat(struct input_dev *dev, int delay, int period);
extern struct class input_class; extern struct class input_class;