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| author | Henrik Rydberg <rydberg@euromail.se> | 2012-09-15 15:15:58 +0200 |
|---|---|---|
| committer | Henrik Rydberg <rydberg@euromail.se> | 2012-09-19 19:50:17 +0200 |
| commit | 8d18fba282120a4a8e4416d1202522ffae8cad58 (patch) | |
| tree | 22e3ddabba314c9ad544b9fefe004194205c2940 /drivers/input/input-mt.c | |
| parent | Linux 3.6-rc4 (diff) | |
| download | linux-8d18fba282120a4a8e4416d1202522ffae8cad58.tar.xz linux-8d18fba282120a4a8e4416d1202522ffae8cad58.zip | |
Input: Break out MT data
Move all MT-related things to a separate place. This saves some
bytes for non-mt input devices, and prepares for new MT features.
Reviewed-and-tested-by: Benjamin Tissoires <benjamin.tissoires@enac.fr>
Tested-by: Ping Cheng <pingc@wacom.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Diffstat (limited to 'drivers/input/input-mt.c')
| -rw-r--r-- | drivers/input/input-mt.c | 48 |
1 files changed, 27 insertions, 21 deletions
diff --git a/drivers/input/input-mt.c b/drivers/input/input-mt.c index 70a16c7da8cc..37ee1f925d23 100644 --- a/drivers/input/input-mt.c +++ b/drivers/input/input-mt.c @@ -27,26 +27,28 @@ */ int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots) { + struct input_mt *mt = dev->mt; int i; if (!num_slots) return 0; - if (dev->mt) - return dev->mtsize != num_slots ? -EINVAL : 0; + if (mt) + return mt->num_slots != num_slots ? -EINVAL : 0; - dev->mt = kcalloc(num_slots, sizeof(struct input_mt_slot), GFP_KERNEL); - if (!dev->mt) + mt = kzalloc(sizeof(*mt) + num_slots * sizeof(*mt->slots), GFP_KERNEL); + if (!mt) return -ENOMEM; - dev->mtsize = num_slots; + mt->num_slots = num_slots; input_set_abs_params(dev, ABS_MT_SLOT, 0, num_slots - 1, 0, 0); input_set_abs_params(dev, ABS_MT_TRACKING_ID, 0, TRKID_MAX, 0, 0); input_set_events_per_packet(dev, 6 * num_slots); /* Mark slots as 'unused' */ for (i = 0; i < num_slots; i++) - input_mt_set_value(&dev->mt[i], ABS_MT_TRACKING_ID, -1); + input_mt_set_value(&mt->slots[i], ABS_MT_TRACKING_ID, -1); + dev->mt = mt; return 0; } EXPORT_SYMBOL(input_mt_init_slots); @@ -62,9 +64,6 @@ void input_mt_destroy_slots(struct input_dev *dev) { kfree(dev->mt); dev->mt = NULL; - dev->mtsize = 0; - dev->slot = 0; - dev->trkid = 0; } EXPORT_SYMBOL(input_mt_destroy_slots); @@ -83,18 +82,19 @@ EXPORT_SYMBOL(input_mt_destroy_slots); void input_mt_report_slot_state(struct input_dev *dev, unsigned int tool_type, bool active) { - struct input_mt_slot *mt; + struct input_mt *mt = dev->mt; + struct input_mt_slot *slot; int id; - if (!dev->mt || !active) { + if (!mt || !active) { input_event(dev, EV_ABS, ABS_MT_TRACKING_ID, -1); return; } - mt = &dev->mt[dev->slot]; - id = input_mt_get_value(mt, ABS_MT_TRACKING_ID); - if (id < 0 || input_mt_get_value(mt, ABS_MT_TOOL_TYPE) != tool_type) - id = input_mt_new_trkid(dev); + slot = &mt->slots[mt->slot]; + id = input_mt_get_value(slot, ABS_MT_TRACKING_ID); + if (id < 0 || input_mt_get_value(slot, ABS_MT_TOOL_TYPE) != tool_type) + id = input_mt_new_trkid(mt); input_event(dev, EV_ABS, ABS_MT_TRACKING_ID, id); input_event(dev, EV_ABS, ABS_MT_TOOL_TYPE, tool_type); @@ -135,13 +135,19 @@ EXPORT_SYMBOL(input_mt_report_finger_count); */ void input_mt_report_pointer_emulation(struct input_dev *dev, bool use_count) { - struct input_mt_slot *oldest = NULL; - int oldid = dev->trkid; - int count = 0; - int i; + struct input_mt *mt = dev->mt; + struct input_mt_slot *oldest; + int oldid, count, i; + + if (!mt) + return; + + oldest = 0; + oldid = mt->trkid; + count = 0; - for (i = 0; i < dev->mtsize; ++i) { - struct input_mt_slot *ps = &dev->mt[i]; + for (i = 0; i < mt->num_slots; ++i) { + struct input_mt_slot *ps = &mt->slots[i]; int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID); if (id < 0) |